CN1268042A

CN1268042A - Body adhering disposable absorbent articles having an increased fit for the body anatomy

Info

Publication number: CN1268042A
Application number: CN98808454A
Authority: CN
Inventors: 斯蒂芬·A·威尔拉彻
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1997-07-01
Filing date: 1998-06-29
Publication date: 2000-09-27
Also published as: CA2295737A1; JP2001506532A; WO1999001094A1; EP0993288A1; AU7784998A; KR20010014402A; ID27867A; BR9810534A

Abstract

A tridimensional disposable absorbent article having a body facing surface and a garment facing surface, a longitudinal symmetry plane, a front end edge and a rear end edge, and comprising a liquid pervious topsheet, a backsheet joined to said topsheet and an absorbent core intermediate the backsheet and the topsheet. The absorbent core has a front portion, a central portion and a rear portion, and comprises a longitudinally oriented ridge in the central and rear portion having a profile that provides for an increased body fit. The article is intended for direct attachment to the skin of the wearer and comprises an adhesive on the body facing surface.

Description

Fit with the health anatomical structure and better to adhere to disposable absorbent article on the health

Invention field

The present invention relates to disposable absorbent article.Disposable absorbent article be considered to design be worn on the cause user external, the liquid of discharging in the body with reception.Specifically, the present invention relates to strengthen the stickiness of health and reduced the disposable absorbent sanitary towel of leaking, menopad, incontinence and inserted pad and protective pad etc. by being complementary with the non-planar surfaces of human body and non-linear ditch.Described disposable absorbent article comprises an absorbent article core, and this absorbent article core has a front portion, a middle part and a rear portion, and is included in the ridge of the vertical orientation in middle part and the rear portion, and the slope of this ridge reduces towards the rear.Described disposable absorbent article will directly be attached on the wearer's skin, and have bonding agent on body surface.

Background of invention

In the basic configuration of disposable absorbent article, but comprise absorbent article core between the Body contact parts that are positioned at transflective liquid (be called not only top flat or coating member) and the liquid-tight protection barriers (but also being called egative film).Obviously, hygroscopic part is used for admitting and preserves the liquid of discharging in the body in advance.The Body contact parts should be able to allow the liquid free flow to cross itself and enter hygroscopic part for providing comfortable and dry and comfortable sensation with contacting of body surface simultaneously.The protection barriers is used for preventing the medicated clothing of the liquid contamination user discharging or run out of from hygroscopic part.

Be worn on some major defects of the existing disposable absorbent article of health outside, for example leak, feel moist/unclean, uncomfortable, with these articles for use can not be relevant with the fine applying of health, because they or be essentially flat before use, therefore must be extruded or be folded into and meet the body surface shape, perhaps have definite shape before use, but still need to improve, so that fit with the anatomical structure shape of user complexity better.Furthermore, most of existing disposable absorbent articles will be placed in the underwear, and put at user before the underwear that is placed with absorbent device this absorbent device adhesive securement, be unfavorable for that the anatomical structure that makes it with health has good stickiness and do like this, other causes the bad factor of fitting also to comprise different wearing custom and underwear type.

In the art, people have done a plurality of different trials about disposable sanitary napkin, improve contact with wearer's body by making this articles for use have shape configurations on the anatomy that can adapt with the health anatomical structure, thereby absorb the liquid of discharging and pollution is kept to minimum.

Concerning women's user, such sanitary towel in advance after vestibule is left in menstruation just immediately with its absorption.

No matter be that those are before use for smooth and in use be deformed or moulded and have definite shape, so that just being deformed before use of matching with wearer's anatomical structure with the adaptive absorbent device of health and those with the suitable absorbent device of health, all be known in the art.The European patent application EP 97110735.4 that on July 1st, 1997 submitted to discloses a kind of disposable absorbent article, sanitary towel specifically, this sanitary towel has the three dimensional structure of improvement before use, can be consistent with the various complicated body shape of the female anatomy that comprises non-linear ditch and non-planar surfaces, to increase body fit and to make us feeling comfortably cool, reduce simultaneously and leak.

This disposable absorbent article comprises a vertical orientation ridge in middle part and rear portion, and the slope of this ridge reduces towards the rear, and this absorbent device preferably is placed directly on wearer's the health.

Three-dimensional articles for use according to EP 97110735.4 can be very approaching with the anatomical structure of user, and they are very comfortable concerning user like this, and it is good in use to fit, thereby make these articles for use remain on appropriate position in the wearing process.Thereby these articles for use are improved really with regard to its scope that in use can remain on the appropriate location.

Smoothly compare with known with product three-dimensional shape, these articles for use in fact can take place more closely to contact with wearer's health owing to its special construction, and because they preferably are placed directly on the health of user, therefore can be by local bonding in its those zones that needing the absorbing bodily discharge liquor being fixed on wearer's the health these articles for use are improved towards applying bonding agent on the health face at it.

In use, adopting traditional mode that articles for use are fixed on the underwear (although also may adopt this type in three-dimensional articles for use) can not the special product advantage that fits tightly of specific implementation, even because the less motion (and this is inevitable) in the wearing process between underwear and health also will affect product, and be tending towards making it from removing with the optimum position that anatomical structure closely contacts, be removing to a certain degree at least.This mobile effect also is subjected to underwear type and user to dress the influence of custom.

Therefore the health bonding agent that applies on the health face at three-dimensional articles for use according to EP97110735.4 has special advantage, contacts because this makes those to cooperate also closely adaptive articles for use to keep stable with the health of user with anatomical structure.

In addition, all good three-dimensional articles for use of these stickiness and suitability itself have just improved the effect that joins the known health bonding agent in the articles for use.Because after being placed directly on the health, these articles for use and known three-dimensional articles for use specific energy are mutually more effectively fitted and are in the proper place, and may reduce to minimum thereby articles for use are adhered on other errors present of health.

Simultaneously, because such three-dimensional articles for use can very closely be fitted with health, thereby make these articles for use all fit in the same manner for any user each time and basically, therefore compare with the known products that those collection points can not accurately limit, better predict the position of the acquisition zone band on the articles for use.This allows at articles for use the health bonding agent to be set on the major part of health face, or under any circumstance the health bonding agent can both be arranged on the most appropriate position, so that in use make articles for use keep its appropriate location, thereby make these articles for use can not be subjected to the absorption of articles for use itself and the interference of acquisition performance better with the Body contact of user.

Disclosed health bonding agent synthetic can be used in combination with tridimensional disposable absorbent article well in the European patent application EP 97110727.1 because they can realize painless this absorbent device of taking away, and on wearer's health not residual bonding agent.More preferably, the advantage of disclosed health bonding agent also can be used for the present invention in european patent application 97110727.1.

Therefore the purpose of this invention is to provide a kind of tridimensional disposable absorbent article, specifically provide a kind of sanitary towel, the structure of this sanitary towel enables and comprises that the various complicated body shape of the female anatomy of non-linear ditch and non-planar surfaces is consistent, and this sanitary towel tends to directly be put on the health of user, and be attached on the skin of user by the health bonding agent synthetic that is applied to these articles for use towards on the health face, this health binding agent preferably when placing, particularly can not cause wearer's discomfort when taking absorbent device away simultaneously.

Another object of the present invention provides a kind of tridimensional disposable absorbent article, and these articles for use can more easily adhere to the proper position on the wearer's body.

Another purpose of the present invention provides a kind of tridimensional disposable absorbent article, when these articles for use are worn and wearer's liquid discharging area close completely, thereby make liquid go to may reduce to minimum or be eliminated outside the absorption region.For being worn on the disposable absorbent article of wearer's crotch area, this prevents from raising from polluting the safety of surrounding skin tissue and medicated clothing.

Another purpose of the present invention provides a kind of tridimensional disposable absorbent article, these articles for use are attached on the wearer's skin by the health bonding agent, make it possible to the painless absorbent device of taking away, and bonding agent does not remain on wearer's the health when taking absorbent device away.

Summary of the invention

The present invention relates to a kind of tridimensional disposable absorbent article, these articles for use have one towards health face and one towards medicated clothing face, a vertical symmetrical plane, a front end edge and a back end edge, but it comprises the top flat of a transflective liquid, an egative film that links to each other with top flat and the absorbent article core between egative film and top flat.Described absorbent article core comprises a front portion, a middle part and a rear portion.Define by intersecting a straight line that forms towards the health face towards health face and symmetrical plane, this straight line is located in the Descartes x-y coordinate system in the symmetrical plane, wherein the x axle is limited by vertical symmetrical plane and two points that front end edge and back end edge intersect, and towards positive y value, described straight line has first derivative corresponding to described Descartes x-y coordinate system towards the health face.The straight line of these articles for use at least one value in the first derivative at the middle part of absorbent article core is greater than described straight line at least one value in the first derivative at the rear portion of absorbent article core like this.Articles for use also have bonding agent at least a portion of health face, so that with on the local bonding health that is attached to the wearer of articles for use.

Description of drawings

Although specifically noted and clearly illustrated the present invention with the claim of description ending, can believe, will more help understanding the present invention below in conjunction with the description of the drawings:

Fig. 1 is the perspective view of an embodiment of sanitary towel of the present invention;

The profile that Fig. 2 cuts open from line 2-2 for sanitary towel shown in Figure 1;

Fig. 3 is the top view of sanitary towel shown in Figure 1;

Fig. 4 is the curve chart that wearer's body one is dissected section, and this figure schematically explains out the central non-linear ditch from the female anatomy of laterally looking;

Fig. 5 a, 5b and 5c be sanitary towel shown in Figure 1 respectively from line 5a-5a, the profile that 5b-5b and 5c-5c cut open;

Fig. 6 for another embodiment of sanitary towel of the present invention from use away from the observed perspective view of wearer's a side.

Detailed Description Of The Invention

The present invention relates to tridimensional disposable absorbent article; the liquid that these articles for use are discharged human body presents absorbability; the medicated clothing of protection user is not contaminated; improve the physiological comfort of user; be easy in addition produce and packing; and since these articles for use have can with the stereochemical structure of the non-linear ditch of female body and non-planar surfaces coupling, thereby make it to present stronger stickiness to health, can be better be consistent with wearer's anatomical structure.These articles for use are placed directly on the skin of user.Below with sanitary towel or menopad as a reference to the description of disposable absorbent article.Here used " sanitary towel " speech refers to the articles for use that are worn on the outside and contiguous pudendum of health zone by the women, these articles for use are used for absorbing and preserving from the various liquid (for example vaginal secretions, menstruation and/or urine) of health discharge, and plan promptly to abandon after using once.But should be understood that the present invention also is applicable to other feminine hygiene articles or menopad as protective pad, or such as other absorbent devices such as incontinence pads.

Here used " use " speech refers to and starts from absorbent device and really put into, and with contacted a period of time of the anatomical structure of user.

Here used " linking to each other " or " fixing " promptly comprise a kind of like this configuration, promptly first parts are directly linked on second parts, also comprise another kind of configuration, promptly by first parts are linked on the intermediate member, and intermediate member then link linking to each other indirectly of first parts and second parts on second parts.

Here used " pudendum " speech refers to visible female external genital organs, is limited to labium majus, nympha, clitoris and vestibule.

Fig. 1 is the perspective view of sanitary towel 20 of the present invention, and it just has stereochemical structure before use, wherein sanitary towel 20 towards health or with the major part of Body contact towards the observer.Said " before use " meaning is that sanitary towel 20 of the present invention had stereochemical structure before on actual being worn.But sanitary towel can be converted into plane configuration and wires up, and launches before dressing subsequently and obtains three-dimensional shape.As shown in Figure 2, but sanitary towel 20 has the top flat 22 of transflective liquid, the liquid-tight egative film 23 that links to each other with top flat 22 and the absorbent article core 24 between top flat 22 and egative film 23.

Sanitary towel 20 has two surfaces: towards health face or Body contact face 20a with towards the medicated clothing face or contact medicated clothing face 20b.When sanitary towel 20 is worn, for example paste when putting sanitary towel, Body contact face 20a will be worn as adjacent with wearer's health, and will be directly towards underwear at the medicated clothing face 20b of opposite side.Each synusia that constitutes sanitary towel also can be specified to accordingly towards the health face with towards the medicated clothing face, for example in absorbent article core 24 promptly so.Sanitary towel 20 has vertical symmetrical plane S.Here used " vertically " speech refers to line, axle or a direction in the sanitary towel 20, when sanitary towel 20 is worn, and its align with the perpendicular that basically wearer's that stands health is divided into left and right sides two halves (for example almost parallel).The symmetrical plane S of sanitary towel 20 corresponds essentially to the perpendicular that this divides the wearer who stands equally.Although preferably sanitary towel 20 accurately is divided into symmetry equivalent two halves by vertical symmetrical plane S, does not get rid of two halves and be not mirror-symmetrical.Here used " laterally " speech refers to a direction that is generally perpendicular to vertical symmetrical plane S." vertical orientation " speech refers to a direction, as shown in plane graph, be included in vertical symmetrical plane S ± 45 degree within; " horizontal orientation " refers to other any direction shown in plane graph similarly.

Here used " preceding " and " back " speech refer to when sanitary towel 20 is worn in the sanitary towel 20 respectively towards the front portion of wearer's body or the part or the limit of rear portion orientation.

Sanitary towel 20 has the periphery 30 that the outside by sanitary towel 20 limits.The longitudinal edge 31 of sanitary towel 20 aligns with vertical symmetrical plane S, and the end limit of sanitary towel 20 comprises front end edge 32a and back end edge 32b.The absorbent article core 24 of sanitary towel has front portion 40, middle part 42 and rear portion 44, and wherein each part preferably corresponds to 1/3 of absorbent article core 24 total lengths approximately.In sanitary towel 20, also define corresponding front portion, middle part and Background Region respectively.

Sanitary towel 20 of the present invention is spatial, because it just has the stereochemical structure that is tending towards with the complicated body shape coupling of female anatomy before use.Stereochemical structure preferably has structural three-dimensional configuration, and wherein " structural three-dimensional configuration " meaning is this structure under the situation that keeps its integrity, promptly for example can not launch fully on a flat surface under the situation that is not torn, crushes or squeezed.In other words, stereochemical structure can not be by carrying out simply folding or pleating obtaining to being initially planar articles for use, but absorbent device of the present invention itself inherent.Three-dimensional sanitary towel 20 of the present invention preferably has constant thickness, and its thickness is more preferably less than 5mm; Therefore can think that this sanitary towel is slim.

Although top flat, egative film and absorbent article core can be assembled into known any configuration (comprise the product that is called " tubulose " and the product with flap), the preferred embodiment of sanitary towel 20 shown in Figure 1 is that the length of top flat 22 and egative film 23 and width dimensions are generally greater than absorbent article core 24.Top flat 22 and egative film 23 extend beyond the limit of absorbent article core 24, and form the periphery 30 of sanitary towel 20 thus.

Top flat 22 is submissive, soft feel, and non-stimulated to wearer's skin.In addition, but top flat 22 is transflective liquids, allows liquid (for example menstruation and/or urine) to see through at an easy rate at its thickness direction.Suitable top flat 22 can be made by the very wide material of scope, as weaving or non-woven material; If any polymeric materials such as hole forming thermoplastic film, apertured plastic films and hydroforming thermoplastic films; Porous foam; Reticulated polymer foam; Netted thermoplastic film and thermoplastic machine-spun cotton yarn etc.Suitable weaving or non-woven material can comprise natural fiber (for example wood or cotton fiber), synthetic fibers (as polymer fibers such as polyester, polypropylene or polyethylene fibres), or the mixing of natural and synthetic fibers.

Preferred top flat is porose formed film.It is because it can see through discharge liquor and itself not absorb discharge liquor that porose formed film is preferably used as top flat, and can reduce the tendency that makes allow liquids and soak into wearers skin again.Like this, keep dry and comfortable with the formed film of Body contact is surperficial, thereby reduced pollution, and make the wearer feel more comfortable health.

Suitable formed film has description in following patent: Decembers in 1975 were authorized the U.S. Pat 3,929,135 of Thompson on the 30th; Authorize people's such as Mullane U.S. Pat 4,324,246 April 13 nineteen eighty-two; Authorize people's such as Radel U.S. Pat 4,343,314 August 3 nineteen eighty-two; Authorized people's such as Ahr U.S. Pat 4,463,045 and the U.S. Pat 5,006,394 of authorizing Baird on April 9th, 1991 on July 31st, 1984.The formed film of the preferred top flat that is used for absorbent device of the present invention in above-mentioned one or more patents, describing, and by Cincinnati, the Procter ﹠amp of Ohio; Sell in " DRI-WEAVE " sanitary towel of Gamble register of company.

Have fluid path pockety, and the top flat that only has fluid path on the part of top flat can be adopted also by the present invention.But the fluid path that general this top flat has orientation make this top flat in central authorities for transflective liquid, and be impenetrable liquid at the periphery of top flat.

In a preferred embodiment of the invention, the health of formed film top flat or exposed surface are hydrophilic, thereby with body surface is that hydrophobic situation is compared and more helped liquid to pass top flat fast, has reduced the danger that menstrual fluid will flow out top flat rather than flow into absorbent article core and be absorbed like this.In a preferred embodiment, as the disclosed WO of PCT 93/09741 is described, surfactant is incorporated in the polymeric material of formed film top flat.In addition, as U.S. Pat 4,950, as described in 254, can carry out surface treatment by health face and make it hydrophilic top flat.

Another kind of situation is referred to as to mix top flat, has fiber and thin film spline structure, and PCT applies for WO93/09744; Useful especially this mixing top flat embodiment is disclosed among WO 93/11725 or the WO 93/11726.

When mentioning top flat, can comprise multiple structure or single layer structure.Above-mentioned mixing top flat designs for multiple structure, adopts other multiple structure design with first and second top flats but also take into account in addition.

Absorbent article core 24 can be any moisture absorption apparatus that can absorb and keep liquid (for example menstruation and/or urine).Absorbent article core 24 can be made into various sizes and shape (for example rectangle, avette, hourglass shape, asymmetric shape etc.), and is made of the various liquid absorption materials that are generally used in sanitary towel and other absorbent device, as is commonly referred to as the pulverizing wood pulp of air felt.Other suitable hygroscopic material comprises the plain filler of wrinkle yarn fiber, the modified crosslinking cellulose fibre is (as the U.S. Pat 5 of authorizing people such as Young on June 8th, 1993,217, those materials of describing in 445), capillary channel fiber (promptly as on April 6th, 1993 U.S. Pat 5 of authorizing people such as Thompson, 200,248 described fibers) with fiber inner capillary tube passage, the moisture absorption foam is (as the U.S. Pat 5 of authorizing people such as DesMarais on November 9th, 1993,260,345 and 1993 on Decembers were authorized people's such as DesMarais U.S. Pat 5 in 7,268, those materials of describing in 244), heat bonding air-laid wadding material is (as the name application with people such as Richards, name is called the material of describing among " the menstruation absorbent structure with hot sticky layer of having realized improved menstrual fluid handling property with and use (Catamenial AbsorbentStructures Having Thermally Bonded layers For Improved Handling ofMenstrual fluids and Their Use In Catamenial pads Having Improved Fit andComfort) in the menopad that suitability and comfortableness improve to some extent " PCT application WO95/10996), the moisture absorption sponge, synthetic cut staple, polymer fiber, the agent of hydrogel molding polymeric gel, bog moss comprises the thin paper that thin paper superimposition thin paper is stacked or the mixing of any equivalent material or material.Suitable absorbent article core is included in European patent application EP 0 598833, the foam of describing among EP 0 598 823 and the EP 0 598 834.Described suitable absorbent article core in International Patent Application WO 94/01069 and WO95/17868, this absorbent article core comprises the thin paper lamination, and it is particulate to have the agent of hydrogel molding polymeric gel between the lamination.

The configuration of absorbent article core and structure also can be various (for example absorbent article core can have thickening degree zone, and for example central authorities are thicker in the profile), possess hydrophilic property gradient, superabsorbent gradient or low-density and low average basis weight (basis weight) receiving area; Maybe can comprise one or more layers or structure.But total wettability power of absorbent article core should be consistent with the purposes of predetermined design and sanitary towel.In addition, the size of absorbent article core and wettability power can be in order to adapt to different use orders corresponding difference, for example as incontinence pad, protective pad, common sanitary towel or overnight hygienic band etc.Even more preferably, absorbent device of the present invention is the sanitary towel with uniform thickness.

Egative film 23 and top flat 22 respectively with absorbent article core 24 towards medicated clothing face 20b and adjacent towards health face 20a, and preferably adopt attachment means well known in the art to link to each other, and be connected with each other with adjacent surface.For example, defiber, helix or the lattice array that can adopt even successive adhesive coating, bonding agent figure coating or bonding agent is fixed to egative film 23 and/or top flat 22 on the absorbent article core 24 or is fixed to one another.Found that gratifying bonding agent is by H.B.Fuller Company of St.Paul, Minnesota produces, and the product code name is HL-1258 and H-2031.Attachment device preferably includes authorized people's such as Minetola on March 4th, 1986, name is called the U.S. Pat 4 of " the disposable medicated clothing (DisposableWaste-Containment Garment) that holds refuse ", the open figure net of 573,986 disclosed bonding agent fibrils.The exemplary adhering mode of the open figure net of fibril comprises as by authorizing Sprague, the U.S. Pat 3,911,173 of Jr. on October 7th, 1975; Authorized people's such as Zieker U.S. Pat 4,785,996 and the U.S. Pat 4,842 of authorizing Werenicz on June 27th, 1989 on November 22nd, 1978, several row that the apparatus and method shown in 666 are showed are curled into the bonding agent fibril of spiral figure.In addition, adhering mode also comprise heat bonding, pressure bonding, ultrasonic bonding, dynamic mechanically is bonding or other any suitable adhering mode well known in the art or the comprehensive use of these adhering mode.

Egative film 23 impenetrable liquids (for example menstruation and/or urine), and preferably make by thin plastic sheeting, but also can adopt other softish impenetrable liquid material.In use, egative film 23 is between the underwear of absorbent article core 24 and user.The function of egative film 23 is to prevent to be extruded from absorbent article core 24 or flow through the effluent contact of absorbent article core 24 and pollute the underwear of user from branch road unintentionally.Therefore egative film 23 can be weaving or non-woven material, as the polymer thin film of polyethylene or polypropylene thermoplastic thin film, or as the composites such as non-woven material of lining thin film.Preferably egative film is to have about 0.012mm to the thick polyethylene film of about 0.015mm.Exemplary polyethylene film is by Clopay Corporation of CinCinnati, the product code name that Ohio makes is the thin film of P18-0401 and by Ethyl Corporation, Visqueen Division, of Terre Haute, the product code name that Indiana produces is the thin film of XP-39385.Egative film 23 is preferably embossed and/or carry out rough processing, so that the outward appearance that more resembles medicated clothing is provided.In addition, still preventing effluent when egative film 23 passes through, egative film 23 can allow steam to run out of (promptly ventilative) from absorbent article core 24.

As illustrated in fig. 1 and 2, three-dimensional sanitary towel 20 has stereochemical structure before use, and the ridge 50 that a vertical orientation is arranged at the middle part 42 and the rear portion 44 of absorbent article core 24, so vertical symmetrical plane S and towards the intersecting lens 46 of health face 20a at the middle part 42 of absorbent article core 24 and rear portion 44 place's slopes towards the rear, promptly reduce towards back end edge 32b.This point is seen clearlyer in Fig. 2.In Fig. 2, the profilograph of sanitary towel 20 show intersecting lens 46 at the middle part 42 and during rear portion 44 slope descend.

If think that described intersecting lens 46 is being arranged in the Descartes x-y coordinate system of symmetrical plane S, the descending slope of then described intersecting lens 46 can be expressed with mathematical way, wherein the x axle is limited by the front end edge 32a of vertical symmetrical plane S and sanitary towel 20 and two joinings of back end edge 32b, and these two points correspond essentially to the point of being represented by digital 32a and 32b in sanitary towel shown in Figure 2 20 profiles, and wherein towards health face 20a towards positive y value.

With regard to this axis coordinate system, can obtain the first derivative of intersecting lens 46.According to the present invention, has a value at least greater than at least one value on the rear portion 44 at absorbent article core 24 at the middle part 42 of absorbent article core 24 in the first derivative of intersecting lens 46 on longitudinal direction.This has comprised the preferable case shown in Fig. 1 and 2, be that intersecting lens 46 always is inclined upwardly towards back end edge 32b, simultaneously 42 have different slopes, and comprise other embodiment with 44 places, rear portion at the middle part, for example 42 places are inclined upwardly intersecting lens at the middle part, and 44 places are downward-sloping at the rear portion.

The successive value of the first derivative of intersecting lens 46 can constantly reduce towards back end edge 32b, this means the slope that intersecting lens 46 has the shaped form profile and constantly reduces, and maybe can establish first derivative and have different centrifugal pumps along the length of intersecting lens 46.For example at the

middle part

42 or 44 places, rear portion or to locate first derivative at both all be constant, the latter then presents the embodiment situation shown in Fig. 1 and 2, wherein intersecting lens 46 is essentially collinear part by two and forms, respectively have invariable slope, the middle part that is positioned at absorbent article core 24 42 merger on intersecting lens 46 are that the slope change takes place at point 48 places at 44 places, rear portion.

Intersecting lens 46 with above-mentioned preferred profile makes sanitary towel 20 of the present invention have the ridge 50 of vertical orientation in the middle part 42 of absorbent article core 24 and rear portion 44, this ridge 50 has vertical non-linear profile, it in use be tending towards with female anatomy in the central non-linear ditch coupling that extends to perineum and enter gluteal fold from labium majus, the non-linear ditch of these central authorities has the general shape at middle part 42 corresponding to curve G ' and rear portion 44 ' schematically show, and its feature also be corresponding anterior 40 ', as shown in Figure 4, wherein in the sanitary towel shown in Fig. 1 to 3 the coupling profile of intersecting lens 46 also illustrate.

The profile of the vertical orientation ridge 50 that the intersecting lens 46 that slope reduces by backward the time limits can make the stickiness of 20 pairs of wearer's body of sanitary towel be improved.In preferred embodiment shown in Figure 1, from front to back, the front portion of ridge 50 (slope substantially constant) be tending towards and labium majus between ditch fit.Changing of ridge 50 across the middle part 42 of absorbent article core 24 and the subsequent section slope between the rear portion 44, its profile in use can with the recessed portion coupling of the central non-linear ditch of female anatomy from the rear portion of labium majus to perineal region, thereby realize Continuous Contact with health.Better comfort is provided like this, and when liquid is discharged, can have more effectively got access to liquid in health.At last, the Background Region (still belong to the rear portion 44 of absorbent article core 24, and have constant-slope in the embodiment shown in fig. 1) of vertical orientation ridge 50 extends between buttocks.But because the rear portion of ridge has less slope, therefore compare with the front portion of ridge, it can make under the situation that does not produce any pressure between this part of anatomical structure and sanitary towel and Body contact, and this pressure can cause discomfort subsequently, and/or hinder ideal roughly successive contact the on the whole length of the non-linear ditch that extends to gluteal fold from labium majus between ridge 50 and wearer's the anatomical structure.

In other words, as Fig. 4 summarize illustrate, have preferred profile, promptly the ridge 50 that reduces towards the rear of its slope can also further enter non-linear ditch.In fact the ridge 50 that profile is represented with line 46 can follow the profile of the ditch of being represented by curve G by the line that extend past is represented by dash line among Fig. 4, wherein said dash line gets for sanitary towel is connected with contacted 2 Rolandic fissure along body surface of anatomical structure, for example these 2 points that are sanitary towel in corresponding ridge front and rear and Body contact.Ridge with linear type profile as known in the art can not this dash line of extend past (because these ridges correspond essentially to this dash line), so can not be along the whole length and the health Continuous Contact of ridge.

In the preferred embodiment of the present invention shown in Fig. 1 and 2, three-dimensional sanitary towel 20 preferably has less constant thickness, promptly less than 5mm, stereochemical structure does not wherein adopt the zone of protuberance or different-thickness, be the inherent feature of sanitary towel 20, rather than for example by being initially smooth structural bending, the folding or feature day after tomorrow that links together and obtain.

As shown in the embodiments of the invention of Fig. 1 and 2, the spill that the front portion 40 of absorbent article core 24 preferably makes progress is so that be consistent in the anatomical structure in mons pubes zone with the wearer better.

Sanitary towel 20 among Fig. 1 and Fig. 2 shows the particularly preferred configuration at front portion 40, middle part 42 and the rear portion 44 of absorbent article core 24.From the cross section, absorbent article core 24 preceding, in and the rear portion have V-arrangement, W shape and inverted V-shaped respectively, this cutting open from sanitary towel shown in Figure 1 20 5a-5a, 5b-5b along the line respectively and 5c-5c Fig. 5 a, better demonstration is arranged among 5b and the 5c.

These different shapes make the sanitary towel 20 also can be consistent with wearer's anatomical structure on the direction that is substantially perpendicular to the symmetrical plane S that has limited.Anterior 40 the V-arrangement and the inverted V-shaped at rear portion 44 are all incorporated middle part 42 into gradually, and the W shape that the middle part obtains will be fitted with labium majus and perineal region.In use, the ridge 50 of vertical orientation is fitted with above-described vertical Rolandic fissure, and the sidepiece 51 that is bent upwards can mate with the groin folding line, and described groin folding line promptly is two ditches that form between health and the lower limb (general in the zone of underwear and health Elastic Contact).

In the preferred embodiment of the present invention shown in Fig. 1 and 2, sanitary towel 20 compares with those sanitary towels that only make the different piece of absorbent article core 24 have known different transverse shapes simply has stronger and the suitable ability of wearer's anatomical structure.

Before use, the stereochemical structure of sanitary towel 20 is that the width of the angle γ of inverted V-shaped part is incorporated the position at middle part 42 into from the rear portion 44 that is positioned at corresponding absorbent article core 24 minimum preferred value begins to increase towards the back end edge 32b of sanitary towel 20, this minima corresponds essentially to the angle beta of the central inverted V-shaped part at W shape middle part 42, and this angle beta is constant along the whole length of this part 42 substantially.Therefore, general unfettered ground its inverted V-shaped of broadening more easily in the rear portion of the ridge between the buttocks 50 can the wearing process at this product in use, thus make sanitary towel have better adaptation ability with wearer's anatomical structure.

Similarly feature is preferably in the V-arrangement front portion 40 of absorbent article core 24 and also has, and wherein the angle [alpha] of V-arrangement is from beginning to increase its width towards the front end edge 32a of sanitary towel 20 corresponding to the anterior 40 minimum preferred values of incorporating 42 positions, middle part into.This will allow sanitary towel 20 near the part of front end edge 32a when being worn in transversely easier flattening, thereby adapt with the mons pubes front portion of relatively flat, still form whole spill simultaneously to follow the mons pubes surface effectively.

Therefore, each angle of the angle of the V-arrangement front portion 40 of absorbent article core 24 and/or the angle at inverted V-shaped rear portion and corresponding whole sanitary towel 20 can increase to about 180 degree towards end limit 32a and/or 32b respectively, thereby the anatomical structure that adapts to the wearer better, and in structure, do not increase any substantial pressure, realize thus better fitting and higher comfortableness.

Can adopt to well known to a person skilled in the art that any method makes the front portion 40 of absorbent article core 24 and/or rear portion 44 have cup-shaped structure, thereby make sanitary towel 20 have this preferred feature that the angle in V-arrangement and the inverted V-shaped part increases towards each end limit respectively.For example, the method that sanitary towel of the present invention shown in Fig. 1 and 2 20 adopts is, cuts the material part that occupy the narrow V-arrangement of central authorities along the longitudinal centre line at the front portion 40 of the original flat of absorbent article core 24 and rear portion 44; Top flat 22 and egative film 23 are also carried out same processing; Described material partly has the length identical with anterior 40 and rear portion 44; Adopt for example known method such as heat bonding then, along that represent and put line cutting edge is connected together among Fig. 3 with 52 and 54.Then along the line of priority bending (for example as those skilled in the art are easy to expect, adopt embossing or part cutting and in absorbent article core 24 resulting impression 56 as shown in Figure 3) suitably crooked nonplanar sanitary towel 20, finally obtain the stereochemical structure shown in Fig. 1 and 2.

When laterally folded sanitary towel 20, so that along with not folding sanitary towel in the basic corresponding fold line of the line that respectively front portion 40 of absorbent article core or rear portion 44 and middle part 42 separated fold, when making front portion 40 or rear portion 44 overlap on the middle part 42, can in sanitary towel 20, see the above-mentioned preferred feature that in the sanitary towel of the present invention shown in Fig. 1 and 2, exists at an easy rate, in both cases, fold line shows angled, and is not to be straight line.

Another embodiment of the present invention is in disposable absorbent article, by for example between egative film and absorbent article core, comprising elasticity insert (resilient insert), thereby this embodiment also can be had and the similar three-dimensional shape of configuration shown in Fig. 1 to 5c with required form.For example, insert can only exist in absorbent device middle part and rear portion, needs to form the ridge with desirable profile there, and perhaps insert can extend along the whole length of absorbent device, so that realize whole shape.The elasticity insert can be made by any known suitable material, for example moisture absorption or non-hygroscopic material, and for example can be by the thermoforming manufacturing, thereby obtain desired three-dimensional shape, and preferably have constant thickness simultaneously.Insert can provide stereochemical structure fully, perhaps also can help to produce and keep described structure in the absorbent device that has been shaped.

According to the present invention, three-dimensional absorbent device, for example sanitary towel 20, are placed directly on the skin of user.The stereochemical structure of absorbent device and its anatomical structure that possessed and user keep adaptive makes these articles for use in use can remain on the appropriate location with the ability of fitting, and does not preferably need other device that these articles for use are fixed on the underwear.

Specifically, sanitary towel is placed on the pudendum zone of general women's user, around the liquid discharging area.According to the present invention, " skin " speech not only refers to the particular skin of user, also comprises mucous tissue in the pudendum zone that generally is present in sanitary towel's user and hair etc.

For articles for use of the present invention being fixed on the skin of user, these articles for use on certain zone of wearer's top flat side, be applied with bonding agent, adhere to fixingly in order to the part, this bonding agent is also referred to as the health bonding agent.

Tridimensional disposable absorbent article of the present invention, for example sanitary towel 20, owing to be improved with the anatomical structure applying of user and the ability of maintenance close fit, thereby these articles for use will keep especially closely contacting with health, and owing to be applied with the health bonding agent and in use stable especially at least a portion of health face at it.

Because spatial, with body fit with keep adaptive articles for use directly to bond on the wearer's skin, thereby these articles for use are whole wearing is maintained at optimum position for anatomical structure in the time on, be not subjected between health and the underwear influence of moving mutually, because preferably do not fixedly connected between these articles for use and the underwear.This has also eliminated because of different underwear types with in use for the wearing custom different influence that produce of articles for use on health is adaptive.

Owing to compare with known three-dimensional articles for use, tridimensional disposable absorbent article of the present invention because of they special shape and they are tightr with the applying of health anatomical structure with the adaptive ability of health maintenance, and in articles for use of the present invention, adopt the health bonding agent also to have further advantage simultaneously, be exactly that articles for use are easy to the location, thereby making three-dimensional articles for use of the present invention to bond on the health with the optimum position, the danger that bonds to thus on the errors present is kept to minimum.

When the distribution of the health bonding agent on health face 20a of considering absorbent device 20, various designs all can be adopted, for example as shown in Figures 1 to 3, the health bonding agent can be arranged to the continuous strip 70 along the periphery of top flat, and the middle section of articles for use does not then have bonding agent like this.This way helps placing articles for use, thereby the contiguous liquid divergence hole of the liquid-tight top flat place that does not have bonding agent is provided with, thereby the liquid that exhales can be transported into immediately in the absorbent structure of absorbent device and can not leak or overflow.

But, the health bonding agent is not the closed circle of necessarily being arranged to around the top flat periphery, and it can be arranged in the fractional increments zone, as point or discontinuous line etc., this to the interactional elimination between the different fixing zone, additional comfort can be provided for the wearer of this articles for use.The health bonding agent preferably in use has less moving with respect to health in the distributed areas on health face 20a of articles for use 20, and for example at front area 40 places of articles for use, this zone is in use corresponding to wearer's mons pubes.

Generally, sanitary towel of the present invention 20 very closely fits with health, makes the position of these articles for use actual arrival of institute when health face 20a goes up liquid and leaves health be more prone to accurate prediction.Therefore might more accurately the health bonding agent roughly be distributed on the neighboring area of health face 20a, only make this middle section adhesive-free towards health face 20a, wherein said middle section is that articles for use are gone up the zone of preparing near the discharge liquor of body divergence hole towards health face 20a, promptly in use generally contiguous labium majus.Therefore the health bonding agent might be applied to absorbent device 20 of the present invention on the relatively large zone on the health face 20a, thereby make these articles for use in use better with the Body contact of user, and these articles for use are remained on the appropriate location better, simultaneously can be to the absorption and the negative effect of receiving ability product of articles for use itself.

Although can adopt the health bonding agent of any kind well known in the art according to the present invention, but the health bonding agent synthetic of describing in European patent application EP 97110727.1 and EP97110730.5 is particularly preferred, because their specific physical, rheology and adhesive property can painlessly be taken absorbent device away, guarantee not residual bonding agent on wearer's skin or hair simultaneously.

As described in EP97110727.1, the rheologic behavio(u)r that is used as the material of health bonding agent of the present invention is to record down and in the certain frequency scope for 37 ℃ in the reference temperature as body temperature.Find, have the articles for use of health bonding agent on the wearing after, under low frequency, form bonding contact, and when taking articles for use away, unsticking take place with certain speed.The described frequency of taking the speed performance away is 100rad/s, and the low frequency when finding simultaneously to form bonding the contact is approximately 1rad/s.Therefore the used frequency of the present invention is in 1 to 100rad/s scope.Therefore, should satisfy following one group of performance :-in frequency range, the percentage variable quantity of elastic modulus G ' 37 is less than or equal to 150% of G ' 37 when frequency is 1rad/s, preferably is lower than 100%, more preferably be lower than 80%, and variable quantity is preferably less than 10000Pa.-in frequency range, viscosity modulus G " 37 variation is not more than 10000Pa, preferably is not more than 5000Pa, most preferably is not more than 1000Pa.-preferably, and G ' 37/G " 37 rate value equals 1 or greater than 1 at least in frequency is 1rad/s to 100rad/s scope, more preferably be equal to or greater than 1.6, most preferably is equal to or greater than 3.3, preferably is no more than about 50 simultaneously.

Rheological behavior is also relevant with glass transition temperature Tg (Glass Transition Temperature) value.Concerning health bonding agent of the present invention, Tg should be preferably less than-15 ℃, more preferably less than-20 ℃, most preferably less than-25 ℃.

For the above-mentioned rheological behavior that satisfies the health bonding agent and these requirements of physical characteristic, can adopt following component criterion in addition.It should be noted that most of components as the health bonding agent have is roughly gelationus structure, and is preferably glue.This point is based on the following fact :-major ingredients is at room temperature to exist with lesser amt for plasticizer materials for the material-macromole or the polymeric component of liquid.In a preferred embodiment, form the three-dimensional grid form by physics between the molecule or chemistry connection.Specifically, the useful physical connection is to be present in the connection that comprises in the elastomeric system of block thermoplastic.

More particularly, component comprises :-0.5 to 20%, be preferably the macromolecule polyalcohol matter of 5% to 15% (weight) or the mixture of these materials, and it is solubilized or inflatable in following plasticizer.As the indefiniteness example, this macromole or polymeric material can be natural and/or synthetic, as natural rubber or as natural rubber and colloidal derivant, their derivant and alginate; Polyacrylic acid lipid (polyacrilics); Polyvinyl alcohol; Polyethylene oxide; Polyvinylpyrrolidone (PVP) or polyvinylether, their copolymer and derivant; Cellulose derivative; Block copolymerization thermoplastic elastomer and preferred styrene block copolymer, more preferably hydrogenation level styrene/ethylene-butylene/styrene (SEBS), styrene/isoprene/styrene (SIS) and styrene/ethylene-propylene/styrene (SEPS).The plasticizer of-51 to 99.5% (weight) or plasticiser mixture, it at room temperature is a liquid.As the indefiniteness example, plasticizer can be water, various ethanol (particularly as glycerol), ethylene glycol, Polyethylene Glycol, liquid polybutene, natural or artificial oil, as vegetable oil, mineral oil or their compositions.The tackifying resin macromolecule polyalcohol matter of-0 to 600% (weight), its main effect are to regulate the Tg value, particularly in the system based on synthetic polymer.-0 to 10%, the material of 0 to 5% (weight) more preferably, this material are used to promote the gelation with stable hydrophilic or hydrophobicity liquid plasticizer.These materials can be used for the oiliness system, C8 to C22 fatty acid for example, their slaine and their polyoxy derivant; Lanolin derivative; Silicon stone; Bentonite, Montmorillonitum and their derivant; Polyamide, the mixture of paraffin wax or above-mentioned substance.

Also can comprise quantity can be respectively up to 10% typical additives well known in the art, change agent etc. as antiseptic, antioxidant, ultraviolet screening agent, pigment, mineral filler, rheological characteristic.

When in system, forming chemical crosslinking, can have cross-linking agent, quantity is preferably up to 5% (weight).The mutual neutralization that also can have the polymer of different efficacies between polyacrylic and polysaccharide when reacting forms chemical crosslinking.

The final mixture of health bonding agent can be according to main component, and promptly the performance of liquid plasticizer is divided into three races:

1) hydrophobicity composition, plasticizer is generally oil in this composition, the perhaps mixing of vegetable oil or mineral crude oil, polymer is generally synthetic polymer, elastomer preferably, solubilized or inflatable in oil.

2) mixed phase composition (mixed phase compositions) in this composition, may form two or more with the hydrophobicity composition at plasticizer and hydrophilic in the polymer and separate phase.In this case, preferably there is the emulsifying agent/activator of right quantity, so that between inconsistent phase, form stable emulsion.Concerning health bonding agent of the present invention, preferably the hydrophobicity composition is more than hydrophilic composition.

3) hydrophilic composition, in this composition, plasticizer is generally water/glycerol/ethylene glycol and analog, and/or their mixture, and polymerization is synthetic (for example acrylate polyacrilics) or natural (for example natural rubber) raw material mutually, or their mixture.

Be stressed that different with prior art with known medical domain is, hydrophilic composition is not preferred, and hydrophobicity composition and admixture composition 1) and 2) be preferred in the application of the present invention.

This part depends on following technical reason, and the many hydrophilic compositions that promptly are used for medical domain presented low elastic characteristic and adhesion strength concerning current application.Preferred other reason of hydrophobicity or admixture composition that adopts is that application of the present invention specifically will comprise health bonding agent and the contacted characteristics of liquid that will absorb in the sanitary towel field.Because the liquid that will absorb all is general moisture type, contact with hydrophilic health bonding agent will cause body fluid by the health bonding agent with absorption to a certain extent.

To cause rheological behavior to change so subsequently, and therefore changed the effect of health bonding agent, unhygienic phenomenon occurs, also cause in the long time, making body fluid and skin to keep directly contacting, this point for any all be undesirable according to disposable absorbent article of the present invention.Also there is potential defect in this to user in addition, because some hydrophilic compositions are potential good breeding medium of the growth of many microorganisms (even comprising pathogen).

In addition, when using new sanitary towel, hydrophilic health bonding agent also is tending towards making the people to feel ice-cold and moist, and the expectation of this point and ordinary consumer is inconsistent.Also can cause other problem in addition from the following fact, promptly tend to become dry, unless they are sealed in the liquid-tight packing with the special health bonding agent of water as plasticizer.

Can adopt known any method that the health bonding agent is applied in the tridimensional disposable absorbent article of the present invention.What bonding agent was applied to absorbent device 20 should not be subject matter for a person skilled in the art on health face 20a.For example by the health bonding agent is directly injected to make on the top flat 22 the health bonding agent be applied to sanitary towel 20 of the present invention on the expectation of health face 20a part.

Health bonding agent on articles for use (similar with the agent of underwear fixed bonding) needs protection before use.Described protection can be to adopt release liner, for example through silicidation or surface-treated paper, makes the good adherent surfaces of this paper formation at the concrete health bonding agent of selecting.

From the principle, tridimensional disposable absorbent article of the present invention is remained on the wearer's body by the health bonding agent, and does not need other support on the throne that is fixed.But,, also can remove from its position gradually to prevent sanitary towel at its backsheet side coating nonskid coating for for example sanitary towel.Although do not expect to have the agent of underwear fixed bonding, and therefore this bonding agent is not preferred for the purpose of the present invention, strictly speaking they is not got rid of outside scope of the present invention.

In another preferred embodiment of tridimensional disposable absorbent article of the present invention, can comprise also gripping these articles for use and it directly being put into special device on the health that this device is similar to European patent application EP 97110734.7 described those devices.

Fig. 6 shows the sketch map with essentially identical sanitary towel 20 shown in Fig. 1 to 5c, and this figure is from use getting away from wearer's unilateral observation, promptly towards medicated clothing face 20b towards the observer.Sanitary towel 20 shown in Figure 6 also comprises and being positioned on medicated clothing face 20b, is used to grip and place the device 58 of the horizontal orientation of this sanitary towel.The device 58 that grips and place sanitary towel is also referred to as the operation auxiliary member in the back.

Certainly, the device 58 that grips and place sanitary towel 20 of the present invention also can be by the people of nurse user, and for example the nurse uses, and this people grips sanitary towel 20 and it is placed on the health of user.

In preferred embodiment shown in Figure 6, the device 58 that is used to grip and place sanitary towel 20 comprises the elongated band of being made by the elastic membraneous material 58 perpendicular to vertical symmetrical plane S orientation, this elongated band be positioned at sanitary towel 20 on medicated clothing face 20b, its position is corresponding to the middle part 42 of absorbent article core 24, the longitudinal middle part position between front end edge 32a that approaches sanitary towel 20 and back end edge 32b.Two spacing ends 60 of the relative both sides of band 58 by being positioned at symmetrical plane S are fixed on the egative film 23, the middle body 62 of band does not link to each other towards medicated clothing face 20b with described simultaneously, but limit a space 64, can allow at least one this space of finger insertion of user grip and place sanitary towel 20.In the embodiment shown in fig. 6, sanitary towel 20 has preferred three-dimensional shape before use, in fact space 64 comprises the middle body 62 of band 58 and the space between medicated clothing face 20b at sanitary towel middle part, it is being recessed on towards medicated clothing face 20b, because it is corresponding to the ridge 50 on health face 20a.The spacing ends 60 of general band 58 adopts known manner (for example adopting bonding agent, method such as hot sticky) to be fixed to going up corresponding to each sweep of impression 56 and the position between the corresponding longitudinal edge 31 towards medicated clothing face 20b of egative film 23.

User preferably is placed on sanitary towel 20 on her palm when the release liner of protecting the health bonding agent is still on its position; wherein sanitary towel contacts with hands towards medicated clothing face 20b; and front end edge 32a is towards wrist; generally with her finger, for example middle finger is inserted in the middle body 62 and the space 64 between the egative film 23 of band 58 simultaneously.User can not need be exerted oneself and sanitary towel 20 is remained in its open hands like this, this also since band 58 make by preferred elastomeric material, simultaneously basically the front portion of sanitary towel 20 on her palm.Tearing the protectiveness release liner off after exposing the health bonding agent, the single movement by the open hands of user just can be put into sanitary towel on the health at an easy rate, obviously is very simple because the hands of sky is placed on the health.

In addition, the mobile user that makes of hands and finger can be controlled the operation to sanitary towel fully when being put into sanitary towel 20 on the health, is that sanitary towel 20 finds appropriate position with the sense of touch of pointing.Specifically, in a preferred embodiment of the invention, the finger that is inserted in the space 64 aligns with the ridge on health face 20a that is positioned at sanitary towel 20 basically, therefore can provide a guiding, come controllably sanitary towel 20 to be placed on the correct position on the anatomical structure of health, even ridge 50 aim at female anatomy rightly extend to the vertical non-linear ditch of gluteal fold from labium majus.For instance, the front portion of ridge 50 can be discerned by the finger that it is inserted in the space 64 by user at an easy rate, and as sanitary towel is directly put to the basis reference of the optimum position of health.

The operation auxiliary member 58 that preferable alternative shown in Figure 6 is executed example makes that the advantage of the health bonding agent on health face 20a of sanitary towel 20 of the present invention can be brought into play fully, particularly preferably be applied to the neighboring area of top flat when the health bonding agent, and the middle section of articles for use is not when having bonding agent.In fact user can more easily directly be placed on sanitary towel 20 on the tram by operation auxiliary member 58, and do not need and the contacting of the sanitary towel that includes health bonding agent 70 towards health face 20a, and reduced that before sanitary towel 20 finishes appropriate location health bonding agent just adheres to errors present place on the wearers skin may.

After sanitary towel 20 was put on the position, the operation auxiliary member that is made of band also made to go smoothly and is easy to withdraw, and can not disturb or change the position of sanitary towel 20.

Because the sanitary towel 20 in the preferred embodiment of the present invention of describing does not comprise the underwear fixed system before this, but adopt the health bonding agent to keep sanitary towel 20 to contact with the health of user safely, so the present invention shown in Figure 6 operates auxiliary member and preferably also allows and can take sanitary towel 20 away from health very simply, or possible words are reused sanitary towel, so that go to toilet, check this product, or under any circumstance finally abandon this product.In fact, can adopt the mode identical, be about to hands and be placed in the not coupling part 62 and the space 64 between the egative film 23 that a finger is inserted into band 58, and make user when these articles for use are being worn, catch sanitary towel 20 at an easy rate with placing sanitary towel.Therefore user can be taken sanitary towel 20 away and grips very safely from health; The operation auxiliary member also can be used for temporarily sanitary towel being temporarily stored in user on hand, for example when going to toilet, and does not need actually to go to catch it with hands, or act on any power on it.

The operation auxiliary member that constitutes by band 58 under any circumstance allow user only by can grip with contacting of sanitary towel 20 towards the medicated clothing face/use it; therefore avoided to contact, and protected the hands of user not to be subjected to pollution towards health face 20a with any of health bonding agent on health face 20a.

Have before use in the preferred absorbent device of three-dimensional shape, for example in the sanitary towel 20 in the preferred embodiment of describing in front, the operation auxiliary member preferably also helps in use the three-dimensional shape that (for example in may hindering the appropriate body kinematics process of fitting of product, or when the three-dimensional shape with body fit may change) keeps articles for use.In other cases, for example the operation auxiliary member that is made of band shown in Figure 6 58 is then in the keeping alignment or be folded or released of product on medicated clothing face 20b, and do not influence properties of product.

In further embodiments, the operation auxiliary member can be made of the material bands more than, or is made of one or more rope, and material is also stiff simultaneously.The operation auxiliary member also can be positioned on the ring of articles for use on medicated clothing face 20b for what become by banded structure, or a series of rings that are configured to allow at least one finger of user to insert.

The operation auxiliary member also can activate by user, for example only pacify before use to absorbent device on the medicated clothing face; In addition, for example the operation auxiliary member that is made of band 58 is detachable, for example pull down its end towards the medicated clothing face from absorbent device, then it is moved on to different places, (for instance) so that established three-dimensional shape on the absorbent device is controlled and be adjusted in to part, or the space 64 of revising at least one the finger insertion that supplies user.The operation auxiliary member that is made of band 58 preferably adopts for example releasable bonding agent thus, or as the modes such as mechanical fastening system of the shackle type of selling with the VELCRO trade mark, make its one or both ends 62 releasably be fixed to absorbent device on medicated clothing face 20b.The operation auxiliary member of loop type can be regulated by user, so that change the diameter of ring, thereby changes the space that is used to insert finger.

The present invention operates the whole width that auxiliary member need not extend across absorbent device, so that be defined for the suitable space of at least one finger that inserts user, this space can enough firmly cooperate with described at least one finger.

In the preferred embodiment as shown in Figure 6, the operation auxiliary member does not extend beyond most of length of disposable absorbent article in the vertical; Preferably, its extension is less than 10% of described length, and more preferably operating auxiliary member is a fillet, the about 1cm of its width (promptly extending on vertically described).

Absorbent device of the present invention also can comprise the material of controlling abnormal smells from the patient, and this material is followed the odour nuisance of absorbed liquid in order to control.

Any suitable known odor control agent that comprises in the disposable absorbent article comprises binding agent and/or substrate etc., can be used as odor control agent in absorbent device of the present invention.For example, apply or the active carbon that adds other odor control agent (zeolite or the clay material that are specially and are) just can be applied in this absorbent structure.

Can adopt method well known in the art that odor control agent is applied in the absorbent device,, as discrete granule, be layered on the absorbent article core or the shop is gone in the absorbent article core, or sneak in the absorbent article core for example with any ideal form.

It is useful especially to add odour controlling materials in absorbent article core articles for use of the present invention, because adopting the health bonding agent that absorbent device directly is put in the application on the wearers skin, can make odor seal, thereby the abnormal smells from the patient that abnormal smells from the patient or absorbed liquid produced that prevents absorbed liquid is run out of absorbent device.

The length of absorbent device of the present invention (specifically sanitary towel 20) preferably is in the typical length scope of the described absorbent device that is placed on the different size on adjacent with the wearer's body basically external position.Specifically, the length at the middle part 42 of absorbent article core 24 and rear portion 44 can be less than the on average wearer's of size the total greatest length of labium majus.

The alternate manner (except cutting being described, connecting or folding) that makes disposable absorbent article have preferred stereochemical structure can be realized by following method, even absorbent device has extensile Hookean region, thereby by to its distortion, for example the middle part of absorbent article core and rear portion are stretched in the horizontal and obtain structure with preferred absorbent device equivalence.

In another embodiment of the present invention, absorbent article core can have two flap (not shown), and each flap is respectively adjacent to the side of absorbent article core and from this horizontal expansion.Flap is configured to overhang the limit of covering wearer's panty crotch, and flap is between wearer's interior leg cuff and wearer's thigh like this.Flap preferably forms the dual lateral wall obstruct by the limit along underwear and helps prevent menstrual fluid that wearer's health and underwear are done stolen goods.

Flap can be made from a variety of materials, and comprises the material as top flat 22, egative film 23, or the mixing of these materials use, and can be the lamination that central authorities have thin paper.In addition, flap can be the individual components that is attached on the three-dimensional absorbent device main body, maybe can be the extension of top flat 22 and/or egative film 23.The suggestion flap has liquid-tight egative film, pollutes the underwear side of user with the discharge liquor of body that prevents to arrive the flap place.

According to the present invention, for example described flap at least a portion of health face, also can be applied with the health bonding agent so that flap is adhered on the inside part of wearer's thigh.This makes that when upwards connecing underwear, flap can be positioned at the outside of trouser legs elastic component, thereby make the vertical edge that covers wearer's underwear of flap, has prevented flap towards absorbent device wrinkling or pleating towards the medicated clothing face.

The preferred flap that is applicable to the three-dimensional absorbent device of the present invention is disclosed in the following patent literature: authorized the U.S. Pat 4,687,478 of Van Tilburg on August 18th, 1987; Authorized the U.S. Pat 4,608,047 that the U.S. Pat of Van Tilburg was authorized Mattingly on August 26th, 4,589,876 and 1986 on May 20th, 1986.

Alternatively, three-dimensional absorbent device can comprise that nature holds the parts of wearer's underwear side.Disclose the sanitary towel that nature holds the parts of wearer's underwear side that has as the three-dimensional absorbent device of the present invention in the following patent literature: December in 1996 was authorized people's such as Lavash on the 17th, name is called the U.S. Pat 5 of " having the disposable absorbent article (Absorbent Articlehaving Panty covering Components that Naturally Wrap the Sides of Panties) that nature holds the underwear covering of underwear side ", 584,829, and JIUYUE in 1996 was authorized people's such as Weinberger on the 24th, name is called the U.S. Pat 5 of " absorbent device (Absorbent AriclesHaving Undergarment Covering Components with Zones of Extensibility) that comprises the underwear cladding element with extensible zones ", 558,663.

In other embodiments of the invention, three-dimensional absorbent device can also comprise that sidepiece closes up, for example described in European patent application EP 96120739.6.

In other embodiment of the present invention, three-dimensional absorbent device also can comprise optional feature, as between top flat 22 and absorbent article core 24, or the receiving layer of what its correct position in office or second top flat.

Although be that example is described disposable absorbent article of the present invention with the sanitary towel, aforementioned content also can be used in other disposable absorbent article, for example panty-liners and incontinence article etc.Thus, this disposable absorbent article also can have all that feature and the parts of the product that belongs to application target mentioned above.

Claims

1. tridimensional disposable absorbent article, have one towards health face and one towards the medicated clothing face, a vertical symmetrical plane, a front end edge and a back end edge, but and comprise the top flat of a transflective liquid, an egative film that links to each other with described top flat and the absorbent article core between described top flat and described egative film, described absorbent article core has a front portion, a middle part and a rear portion, describedly on the health face, define one by the described line that forms that intersects towards health face and described symmetrical plane, described line is located in the interior Descartes x-y coordinate system of described symmetrical plane, wherein the x axle is limited by described vertical symmetrical plane and two points that described front end edge and described back end edge intersect, and towards the health face towards positive y value, described line has first derivative with respect to described Descartes x-y coordinate system, the value of at least one the described first derivative of wherein said line in the described middle part of described absorbent article core is greater than the value of described line at least one first derivative at the described rear portion of described absorbent article core

Described articles for use are characterised in that:

It is used for the bonding agent on the local bonding wearer's body that is attached to described articles for use with described articles for use described towards comprising to the small part of health face.

2. disposable absorbent article as claimed in claim 1, the value that it is characterized in that all the described first derivatives in the described middle part is all greater than the described first derivative values in the described rear portion.

3. disposable absorbent article as claimed in claim 1 or 2, it is characterized in that at described middle part at described rear portion or the described first derivative in two parts be steady state value.

4. the described disposable absorbent article of each claim as described above, it is characterized in that described articles for use are the V-arrangement that limits an angle [alpha] in described forward cross section, in the cross section at described middle part is the W shape that limits an angle beta, and in the cross section at described rear portion for limiting the inverted V-shaped of an angle γ, wherein increase towards described front end edge, increase towards described back end edge at described rear portion inverted V-shaped angle γ in described forward V-arrangement angle [alpha].

5. the described disposable absorbent article of each claim as described above, it is characterized in that :-described bonding agent is that 37 ℃ of elastic modelling quantity under (100) are G ' 37 in temperature, in temperature is that 37 ℃ of viscosity modulus under (100) are G " 37; wherein G ' 37 is less than 20000Pa, G " 37 less than 15000Pa;-select described bonding agent to have following dynamic elasticity performance, make that G ' 37 and G's ' 37 when frequency is 100rad/sec when frequency is 1rad/sec is poor, _ G ' 37, are not more than 150% of G ' 37 when frequency is 1rad/sec, preferably are not more than 10000Pa; And-select described bonding agent to have following dynamic adhering performance, make G when frequency is 1rad/sec " 37 with G when frequency is 100rad/sec " 37 poor, _ G " 37; be not more than 10000Pa; preferably be not more than 5000Pa; wherein G ' when frequency range is 1 to 100rad/s 37 and G " 37 ratio is more than or equal to 1, preferably more than or equal to 1.6, most preferably more than or equal to 3.3.

6. disposable absorbent article as claimed in claim 5, wherein said bonding agent is a composite, comprising: the plasticising intermixture or the complexing agent of-51% to 99.5% (weight), it is liquid state down at 20 ℃; The polymerization intermixture or the complexing agent of-0.5% to 20% (weight), it can dissolve or expand in described plasticising mixing or complexing agent;-account for the tackifying resin of described polymerization mixing or complex 0 to 600% (weight).

7. as claim 5 or 6 described absorbent devices, wherein said bonding agent to small part is hydrophobic, and preferably 80% of described bonding agent (weight) is made of the hydrophobicity composition, and most preferably all the components of described bonding agent all is hydrophobic.

8. the described disposable absorbent article of each claim as described above, it is characterized in that described disposable absorbent article is sanitary towel or protective pad, and described health bonding agent is applied to described neighboring area towards the health face, make described middle section at least towards the health face not have bonding agent, described middle section is in described that part of zone adjacent with labium majus on the health face when using described disposable absorbent article.