CN1331661C - Three-dimensional sheet materials - Google Patents
Three-dimensional sheet materials Download PDFInfo
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- CN1331661C CN1331661C CNB2003101131702A CN200310113170A CN1331661C CN 1331661 C CN1331661 C CN 1331661C CN B2003101131702 A CNB2003101131702 A CN B2003101131702A CN 200310113170 A CN200310113170 A CN 200310113170A CN 1331661 C CN1331661 C CN 1331661C
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Abstract
To provide a sheet material of which the recovery property when stretched in the flat surface direction, and the recovery property when compressed in the thickness direction are high, and which is bulky. This solid sheet material 10 is formed by laminating a first fiber layer 1 containing a fiber which is solidly curled, and a second fiber layer 2 containing a fiber being solidly curled which is the same kind with or a different kind from the first fiber. Both of the fiber layers 1 and 2 are integrated in the thickness direction by being partially bonded at numerous bonded parts 3. Numerous protruding parts 4 are formed by the protrusions of the first fiber layer 1 in spaces between respective bonded parts 3 and 3. (C)2004,JPO&NCIPI.
Description
Technical field
The present invention relates to by at a face many protuberances being arranged and having the three-dimensional sheet materials that the adhesive-bonded fabric of fluffy structure constitutes.
In addition, the invention still further relates to liquid the imbedibility height, can absorb the multilayer tablet material of liquid rapidly.Sheet material of the present invention, for example special surficial sheets and the absorber that is used as absorbing products such as sanitary napkin, disposable diaper ideally.
Background technology
The applicant has proposed following three-dimensional sheet materials previously: the 1st layer and the 2nd layer of adjacency are therewith arranged, layers 1 and 2 engages partly by the junction surface of compulsory figure, the 1st layer forms three-dimensional shape between this junction surface, the 2nd layer of material by the behavior of demonstration elastomer constitutes, whole sheet material has aeration (opening the 2002-187228 communique referring to the spy) when showing the elastomer behavior.The recovery of this three-dimensional sheet materials when in-plane is upheld and the recovery height when thickness direction compresses can be aptly as the constituent material of disposable absorbent article or the wipers (wiper) that the people is used thing., more and more higher to the requirement of upholding recovery and compression and back renaturation.
Known a kind of dirt-proof boot (dust cloth): constitute by the ground floor and the second layer, mutual laminated integratedization of these ground floors and the second layer, wherein, ground floor adopts the one-way carded web (card web) that is made of the interfibrous heat fusing binder fibre that presents curling latent crimp fiber and bonding this latent crimp fiber to constitute, and its exposing surface is level and smooth; The second layer adopt by under curling temperature in presenting of aforementioned latent crimp fiber in fact the intercrossing carded web that constitutes of the fiber of not thermal contraction constitute, form the protuberance (opening the 2001-89961 communique) of mutual almost parallel referring to the spy at its exposing surface.In this dirt-proof boot, therefore the ground floor and the second layer increase protuberance and are not easy at their whole joint.In addition, increase is not easy by the free degree of the style (design) of protuberance generation.
Know: melt bonded partly as the following ply of continuous long strand upper strata with closing line as continuous long strand, and the surficial sheets of the absorbing products of sheet materialization (opening the 2002-65738 communique referring to the spy).In this surficial sheets, water-wetness by making lower floor and density make permeability for liquids good, and prevent the return of liquid than last floor height.As the means that increase density, the crispation number of continuous filament yarn is distinguished., be continuous filament yarn owing to constitute fiber, the bulkiness that therefore improves sheet material is not easy, and sheet material becomes the sheet material that lacks soft feeling.
Also know method manufacturing that employing is made of following operation, at least the adhesive-bonded fabric system wiper of many fluctuatings arranged in one side: obtain by the hydrophilic fibre net of one deck at least and the operation of the laminated body that constitutes of the hydrophobic fibre net of the hot crimpiness of one deck at least; On the supporting body surface of the many protuberances that possess continuous planar portions, interruption and independent distribution and/or recess, many fine osculum, to aforementioned laminated body from minute aperture nozzle ejection water under high pressure, in the fiber interweaving that makes aforementioned two nets, arrange again, obtain operation at the adhesive-bonded fabric of the distribution density inequality of the face direction fiber of aforementioned laminated body; After aforementioned adhesive-bonded fabric dehydration and/or drying, heat-treat the operation (opening flat 8-60509 communique) that aforementioned synthetic fibers are curled referring to the spy.This wiper is owing to whole the joint of 2 fleeces at them, so have the same shortcoming of putting down in writing with the patent documentation 2 of previous narration of dirt-proof boot.
Summary of the invention
Therefore, the objective of the invention is to, recovery when in-plane is upheld and the recovery height when thickness direction compresses, fluffy sheet material are provided.
Again, the present invention also aims to, provide liquid the imbedibility height, can absorb the fluffy of liquid rapidly and the sheet material of soft feeling is arranged.
The present invention reaches aforementioned purpose (referring to this invention when inventing hereinafter referred to as the 1st) by a kind of three-dimensional sheet materials is provided, this three-dimensional sheet materials is that the 2nd fibrage lamination (lamination) of fiber that the solid that contains the 1st fibrage of the fiber that solid curled and contain or xenogenesis of the same race with this fiber has been curled forms, aforementioned two fibrages engage partly at many junction surfaces, integrated at thickness direction, the 1st fibrage protrudes between each junction surface, forms many protuberances.
Again, the present invention reaches aforementioned purpose (referring to this invention when inventing hereinafter referred to as the 2nd) by a kind of sheet material is provided, this sheet material is that the 2nd fibrage lamination of fiber that the solid that contains the 1st fibrage of the fiber that solid curled and contain or xenogenesis of the same race with this fiber has been curled forms, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage has been curled has been curled than the solid that contains in the 1st fibrage, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height.
Again, the invention provides a kind of absorbing products, it possesses the superficial layer of permeability for liquids, the impermeable application of anti-leakage layers of liquid and between the absorbed layer of the liquid retainability of two interlayers, wherein as aforementioned surfaces layer or absorbed layer, use following sheet material: the 1st fibrage that contains the fiber that solid curled, the 2nd fibrage lamination of the fiber that has curled with the solid that contains or xenogenesis of the same race with this fiber forms, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage has been curled has been curled than the solid that contains in the 1st fibrage, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height; Aforementioned sheet material is configured to, and aforementioned the 2nd fibrage is towards aforementioned application of anti-leakage layers side.
Description of drawings
Fig. 1 is the oblique view of a preferred embodiment of expression the 1st invention and the 2nd sheet material of inventing.
Fig. 2 is the II-II line sectional view among Fig. 1.
The specific embodiment
Below based on its embodiment preferred, on one side with reference to accompanying drawing the present invention is described on one side.Fig. 1 represents the oblique view of an embodiment of three-dimensional sheet materials of the present invention.II-II line sectional view in Fig. 2 presentation graphs 1.
Sheet material 10 shown in Fig. 1 is by possessing the 1st fibrage 1 and constituting with the adhesive-bonded fabric of the sandwich construction of the 2nd fibrage 2 of its adjacency.The 1st fibrage 1 is made of the aggregate of fiber.On the other hand, the 2nd fibrage 2 is made of the aggregate of the fiber of kind different with the fiber that constitutes the 1st fibrage 1 and/or cooperation.The 1st fibrage 1 and the 2nd fibrage 2 engage partly by many junction surfaces 3.In other words, the 1st fibrage 1 and the 2nd fibrage 2 be not at their whole joint., even in asynthetic zone, two fibrages also contact.In the present embodiment, junction surface 3 adopts small circular to form discontinuously discretely, forms the configuration figure of rhombus trellis on the whole.Junction surface 3 is by densificationization, and with other part ratios in the sheet material 10, thickness is little and density is big.
Junction surface 3 is that the 1st fibrage 1 and the 2nd fibrage 2 heat fusings are bonding and form.Integrated by these junction surface 3, two fibrages at thickness direction.Junction surface 3 in the present embodiment is circular, but the shape at junction surface 3 also can be ellipse, triangle or rectangle or their combination etc.In addition, also the junction surface can be formed wire such as continuous shape, for example straight line and curve.
The concrete purposes of three-dimensional sheet materials 10 etc. is also depended on respect to the area occupation ratio (area at the junction surface 3 of average three-dimensional sheet materials 10 unit ares) of the area of three-dimensional sheet materials 10 in junction surface 3.From the aspect that engages that fully increases the 1st fibrage 1 and the 2nd fibrage 2 and form the three-dimensional shape of convex fully so that present the aspect of bulkiness, preferred 6-90%, preferred especially 10-70%.
Three-dimensional sheet materials 10, between junction surface 3, the 1st fibrage protrudes, and forms many protuberances 4.In the present embodiment, three-dimensional sheet materials 10 has that junction surface 3 that many quilts are made of the spread geometry of rhombus trellis surrounds and the enclosed areas that forms, and in this enclosed areas, the 1st fibrage 1 protrudes as shown in Figure 2, formation protuberance 4.Protuberance 4 in the present embodiment, the shape of the vaulted shape of formation circle.Its inner fiber with formation the 1st fibrage 1 is full of.Junction surface 3 relatively becomes recess with respect to protuberance 4.On the other hand, at the 2nd fibrage 2,3 at junction surface keeps tabular surface substantially, perhaps protrudes (referring to Fig. 2).See that as three-dimensional sheet materials 10 integral body its structure is: its 2nd fibrage 2 sides are smooth and even protrude, and in the 1st fibrage 1 side many jogs arranged.
The 1st fibrage 1 contains the fiber that solid has been curled.Therefore according to aforementioned, because protuberance 4 is made of the 1st fibrage 1, the 1st fibrage 1 contains fiber that solid curled and is meant that protuberance 4 contains the fiber that solid has been curled.Contain the fiber that solid has been curled by protuberance 4, the recovery during compression protuberance 4 uprises.The excessive slurry of the protuberance 4 when in addition, containing immersion fluid in three-dimensional sheet materials 10 is little.Therefore, three-dimensional sheet materials 10 can be aptly as the constituent material of disposable absorbent article or the wet wiper that the people is used thing.And because the three-dimensional fiber that has curled can clamp at its curling position and keep fibrous dust, so three-dimensional sheet materials 10 is as the occasion of wiper, the catching height of fibrous dust.In addition, at the recess of 4 of protuberances, the dust that bread flour etc. are bigger easily is held, therefore from then on see, and also be good with three-dimensional sheet materials 10 as wiper.And the 1st fibrage 1 uprises its recovery when in-plane is upheld.
As the fiber that solid has been curled, can list and present curling potential crimping property fiber, particularly present staple fibre and the manufactured fiber of machine crimp, the particularly staple fibre of the manufactured fiber of machine crimp of curling potential crimping property fiber.Particularly from the compression and back renaturation of protuberance 4 and the high aspect of extension recovery of the 1st fibrage 1, the fiber that solid has been curled preferably is made of the staple fibre that presents curling potential crimping property fiber, particularly presents curling potential crimping property fiber.By using staple fibre, with the occasion ratio that uses continuous filament yarn, improve the fluffy degree of sheet material 10 easily, present soft feeling easily.From this point of view, fiber long for 2-150mm, particularly be desirable about 5-100mm.Presenting curling potential crimping property fiber is the rolled state of web-like (coiled type).As the potential crimping property fiber, its fiber number is preferably about 1-7 dtex (dtex).The potential crimping property fiber for example is made of eccentric core-sheath-type composite fibre or (side by side) type composite fibre arranged side by side of with 2 kinds of different thermoplastic, polymeric materials of shrinkage factor being composition.As its example, can list the spy and open the fiber that flat 9-296325 communique and No. 2759331 communiques of Japan Patent are put down in writing.As the example of 2 kinds of different thermoplastic, polymeric materials of shrinkage factor, for example ethylene-propylene random copolymer (EP) sees it is desirable with the combination of polypropylene (PP) from the pliability aspect of three-dimensional sheet materials 10.
The 1st fibrage 1 can be made of the fiber 100% that solid has been curled, and also can contain other fiber.As other fiber, for example can list under the curling beginning temperature of aforementioned potential crimping property fiber the fiber of not thermal contraction in fact.Can list heat-shrinkable particularly but under the curling beginning temperature of aforementioned potential crimping property fiber the fiber of not thermal contraction and do not have the fiber of heat-shrinkable in fact in fact.Particularly preferably contain the heat fusing binder fibre.Thus, the surface strength of protuberance 4 improves, and has prevented fluffing effectively.The amount of the fiber that the occasion that contains the fiber beyond the fiber that solid curled in the 1st fibrage 1, solid have been curled is preferably more than the 30 weight % with respect to the weight of the 1st fibrage 1, is preferably 50-90 weight % especially.
Same with the 1st fibrage 1, the 2nd fibrage 2 also contains the fiber that solid has been curled.Fiber as contained solid in the 2nd fibrage 2 has been curled can use to present curling potential crimping property fiber well.This potential crimping property fiber also can be with the 1st fibrage 1 in any fiber of the of the same race or xenogenesis of contained potential crimping property fiber.About the details of potential crimping property fiber contained in the 2nd fibrage 2, can be suitable for explanation aptly about potential crimping property fiber contained in the 1st fibrage 1.Contain the fiber that solid has been curled by the 2nd fibrage 2, the 2nd fibrage 2 uprises its recovery when in-plane is upheld.
The 2nd fibrage 2 can be made of the fiber 100% that solid has been curled, and also can contain other fiber.As other fiber, can list with the 1st fibrage 1 in the contained same fiber of other fibers.The amount of the fiber that the occasion that contains the fiber beyond the fiber that solid curled in the 2nd fibrage 2, solid have been curled is preferably more than the 50 weight % with respect to the weight of the 2nd fibrage 2, is preferably 70-90 weight % especially.
According to above-mentioned, because the 1st fibrage 1 and the 2nd fibrage 2 all contain the fiber that solid has been curled, so the recovery during these course in-planes elongations all uprises.Even its result as three-dimensional sheet materials 10 integral body, also uprises its recovery when in-plane extends.Therefore, three-dimensional sheet materials 10 is for example as the occasion of wiper, good with respect to the concavo-convex following of object face.In addition, for example as the occasion of the member of formation of absorbing products, good with respect to the following of user's action, the adaptability of absorbing products improves, and can prevent effectively that liquid from spilling with three-dimensional sheet materials 10.
Three-dimensional sheet materials 10 has low-density structure, and the compression when thickness direction compresses is big fully.More particularly, also depend on the concrete purposes of three-dimensional sheet materials 10, but from giving three-dimensional sheet materials 10 with fluffy sense and raising compression and then raising flexibility aspect, three-dimensional sheet materials 10 is at 0.49cN/cm
2Apparent density under the pressure is preferably 5-50kg/m
3, be preferably 10-30kg/m especially
3And from giving the aspect of three-dimensional sheet materials 10 with the conformality raising of the three-dimensional shape of full intensity, convex, three-dimensional sheet materials 10 is at 49.0cN/cm
2Apparent density under the pressure is preferably 20-130kg/m
3, be preferably 30-120kg/m especially
30.49cN/cm
2Pressure equal pressure in the wearing of absorbing products, 49.0cN/cm substantially
2Pressure equal in the wearing of absorbing products, to add the pressure of the occasion that body presses substantially.
Three-dimensional sheet materials 10 is at 0.49cN/cm
2Under the pressure and at 49.0cN/cm
2Apparent density under the pressure is by using 0.49cN/cm described later
2Following and the 49.0cN/cm of pressure
2Thickness under the pressure removes its Unit Weight respectively and calculates.
The thickness of three-dimensional sheet materials 10 also depends on the purposes that it is concrete, but from bulkiness and compression aspect, 0.49cN/cm
2Thickness under the pressure is preferably 1.5-10mm, is preferably 2-6mm, 49.0cN/cm especially
2Thickness under the pressure is preferably 0.5-5mm, is preferably 1.0-2.5mm especially.
Adding thickness use compression variation rate assay method (KES method) mensuration of depressing.As determinator, make firmly-the KES FB3-AUTO-A automation compression test device of ト テ Star Network Co., Ltd. system.Initial stage thickness is set at 0.49cN/cm with increased pressure board load
2And measure.Piezometry is from initial stage thickness T 1 (0.49cN/cm with certain speed (1mm/sec)
2) thickness T 2 (49cN/cm when arriving load
2) between change and measure.The detection of compressive load is undertaken by the high sensitivity force cell.This force cell can detect 0.1cN/cm
2
At 0.49cN/cm
2The also available following method of thickness under the pressure is measured.At first, measuring the plate of placing on the platform than the size little (plectane of diameter 5.6cm, 12.4g) of this mensuration sheet, be the datum mark A of mensuration with position above the plate under this state.Secondly, remove plate, measure sheet (10cm * 10cm), placing plate more thereon measuring to place on the platform.With position above the plate under this state is B.Obtain the thickness of three-dimensional sheet materials 10 by the difference of A and B.Measure machine and use Laser Displacement Meters [(strain) キ-エ Application ス system, CCD laser displacement transducer LK-080], but also can use dial to indicate the thickness meter of tabular form.But the occasion of used thickness meter is adjusted to 0.49cN/cm with measuring the mensuration power of machine and the weight of plate
2Under the pressure.
Three-dimensional sheet materials 10 is about aforesaid 0.49cN/cm
2Thickness T 1 and 49.0cN/cm under the pressure
2Thickness T 2 under the pressure for example, from three-dimensional sheet materials 10 occasion as wiper, is seen the aspect that following height, the sweeping efficiency of object face are high, is preferably 30-85%, is preferably 40-70% especially with the compression ratio of following formula (1) definition.With the occasion of three-dimensional sheet materials 10,, be desirable from the bodily form and the following of action and the aspect that thoughts and feelings improves with respect to the user as the member of formation of absorbing products again.
Compression ratio (%)=(T1-T2)/T1 * 100 (1)
From making three-dimensional sheet materials 10 present the viewpoint of sufficient compression and fluffy sense, three-dimensional sheet materials 10 preferred its Unit Weights are 20-200g/m
2, be preferably 40-150g/m especially
2Unit Weight is that three-dimensional sheet materials 10 is cut into the above size of 50mm * 50mm, and the formation determination sheet uses minimum scale to measure the weight that this measures sheet as the electronic balance of 1mg, obtains by being converted into Unit Weight.
Secondly, the preferable production process of the three-dimensional sheet materials 10 of the present embodiment is described.Three-dimensional sheet materials 10 is to obtain by the following method: the 1st fiber assembly that will contain the potential crimping property fiber, the 2nd fiber assembly lamination with the latent crimp fiber that contains or xenogenesis of the same race with this latent crimp fiber, make the two fiber assemblies bonding laminated body that constitutes of heat fusing partly, follow this laminated body of heat treatment, make aforementioned potential crimping property fiber crimp contained in each fiber assembly, make the direction thermal contraction in its face of each fiber assembly, form the 1st fibrage and the 2nd fibrage respectively by the 1st fiber assembly and the 2nd fiber assembly, thereby obtain.And when its thermal contraction, the percentage reduction of area by making the 2nd fiber assembly protrudes the 1st fibrage greater than the percentage reduction of area of the 1st fiber assembly, forms protuberance 4.
Each fiber assembly preferably is made of the fleece that uses the carding machine manufacturing.Heat fusing is bonding partly in order to make two fiber assemblies, thereby obtains laminated body, for example uses processing of ultrasonic wave embossing or the processing of hot pressing line.The heat treatment temperature of laminated body is decided to be more than the curling beginning temperature of potential crimping property fiber contained in each fiber assembly.In heat treatment, for example use blowing hot-air (the saturating method processing of wind) and infrared radiation etc.The percentage reduction of area of each fiber assembly is designated as S with perisystolic benchmark area
0, area after the contraction of benchmark area is designated as S
1, with following formula (2) expression.
Percentage reduction of area (%)=(S
0-S
1)/S
0* 100 (2)
For the percentage reduction of area that makes the 2nd fiber assembly percentage reduction of area, for example can list the method for following (1)-(4) greater than the 1st fiber assembly.
(1) make the 1st fiber assembly contain under the heat treatment temperature of aforementioned laminated body in fact the fiber of not thermal contraction (following also cry non-heat-shrinkable fibre).On the other hand, do not make the 2nd fiber assembly contain non-heat-shrinkable fibre, only constitute the 2nd fiber assembly by the potential crimping property fiber.By containing non-heat-shrinkable fibre in the 1st fiber assembly, the curling of potential crimping property fiber that contains in the 1st fiber assembly hindered.Therefore, when aforementioned laminated body heat treatment, the amount of crimp of the potential crimping property fiber in the amount of crimp of the potential crimping property fiber in the 1st fiber assembly and the 2nd fiber assembly is compared, and is relatively low.Its result, the percentage reduction of area of the 2nd fiber assembly is greater than the percentage reduction of area of the 1st fiber assembly.
(2) make the 1st fiber assembly and the 2nd fiber assembly separately among contain non-heat-shrinkable fibre, make the proportional height that contains that contains non-heat-shrinkable fibre in ratio the 2nd fiber assembly of non-heat-shrinkable fibre in the 1st fiber assembly.In the case, in each fiber assembly, its contained the curling of potential crimping property fiber is hindered.Non-heat-shrinkable fibre to contain the degree that proportional the 1st high fiber assembly hindered big.Therefore, when aforementioned laminated body was heat-treated, the amount of crimp of the potential crimping property fiber in the amount of crimp of the potential crimping property fiber in the 1st fiber assembly and the 2nd fiber assembly is compared, and was relatively low.Its result, the percentage reduction of area of the 2nd fiber assembly is greater than the percentage reduction of area of the 1st fiber assembly.
(3) before with the 1st fiber assembly and the 2nd fiber assembly lamination, only the 1st fiber assembly is implemented the processing of hot pressing line in advance.In view of the above, the contained potential crimping property fiber of the 1st fiber assembly moves the fusion sticking point restriction that is processed to form by embossing.Therefore, when aforementioned laminated body was heat-treated, the amount of crimp of the potential crimping property fiber in the amount of crimp of the potential crimping property fiber in the 1st fiber assembly and the 2nd fiber assembly is compared, and was relatively low.Its result, the percentage reduction of area of the 2nd fiber assembly is greater than the percentage reduction of area of the 1st fiber assembly.
(4), use the curling beginning temperature high fiber of beginning temperature that curl than the potential crimping property fiber that contains in the 2nd fiber assembly as the contained potential crimping property fiber of the 1st fiber assembly.The fiber that the beginning temperature of curling is high is compared with the beginning temperature fiber lower than this fiber that curl, heat treated occasion under uniform temp, and the fiber difficult labour that the beginning temperature of curling is high is given birth to and is curled.Therefore, when aforementioned laminated body heat treatment, the amount of crimp of the potential crimping property fiber in the amount of crimp of the potential crimping property fiber in the 1st fiber assembly and the 2nd fiber assembly is compared, and is relatively low.Its result, the percentage reduction of area of the 2nd fiber assembly is greater than the percentage reduction of area of the 1st fiber assembly.
In the method for above (1)-(4), can be with method (1) and method (3) and/or (4) combination.In addition, also can be with method (2) and method (3) and/or (4) combination.
The three-dimensional sheet materials that obtains like this, with it as the occasion of wiper, owing to contain the fiber that solid has been curled in the protuberance 4, therefore to the catching excellence of fine fibre shape dust.In addition, the recess by 4 of protuberances also can capture bigger dusts such as bread flour.And because recovery when in-plane is upheld and the recovery height when thickness direction compresses, therefore to the following height of cleaning object face, sweeping efficiency improves.And the installation on cleaning device also improves.And owing to also contain the fiber that solid has been curled in the 2nd fibrage 2, therefore as required, the 2nd fibrage 2 sides also can be used for cleaning.That is, can be as the wiper of two sides type.
In addition, three-dimensional sheet materials is owing to contain the fiber that solid has been curled in the protuberance 4, so its rigidity height, its result is even contain the occasion of liquid such as immersion and washing agent, can keep the round dome structures of convex effectively, even form the occasion of Wet-wiping device, cleaning property can not reduce yet yet.And, even be used as the occasion of the member of formation (for example surficial sheets) of absorbing products, after the body fluid infiltration or absorbing, also can keep the round dome structures of protuberance 4, therefore can prevent the sense of discomfort of skin, airtight, macula.
The 1st invention is not limited to above-mentioned embodiment.For example, the inside of the protuberance 4 in the three-dimensional sheet materials 10 of above-mentioned embodiment is full of with the fiber that constitutes the 1st fibrage 1, but replaces this situation, also protuberance 4 can be constituted the inner state of hollow that is.
The following describes the 2nd invention.About the 2nd invention, the aspect of Te Bieshuominging can not suit to be suitable for previously described relevant the 1st detailed description of the invention.
The preferred embodiment of the 2nd invention is with same as the illustrated Fig. 1 of preferred embodiment and the sheet material shown in Fig. 2 of the 1st invention.Therefore, while see figures.1.and.2 to the 2nd the invention preferred embodiment describe.But, should be noted in the discussion above that the 1st fibrage needn't protrude to form many protuberances in the 2nd invention.Therefore, in the following description, the sheet material 10 shown in Fig. 1 and Fig. 2 is referred to as sheet material 10 simply.
In the sheet material 10 of the 2nd invention embodiment, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage 2 has been curled has been curled than the solid that contains in the 1st fibrage.In view of the above, the apparent density of the 2nd fibrage 2 is than the apparent density height of the 1st fibrage 1.Its result, at the thickness direction of sheet material 10, the apparent density of sheet material produces gradient.Because this gradient, produce the power that sucks liquid from the 1st fibrage 1 to the 2nd fibrage, when in fluid drainage to the 1 fibrage, absorbed rapidly.Thus, be difficult to residual liquid on the 1st fibrage 1 surface.Suck the power of liquid,, specifically, become higher in the occasion that sheet material is added power such as stretching and crook particularly in occasion to the sheet material reinforcing.
The apparent density p1 of the apparent density p2 of the 2nd fibrage 2 and the 1st fibrage 1 considers that from the viewpoint that the power that sucks liquid is demonstrated fully be preferably more than the p2/p1=1.1, more preferably 1.1-5 is preferably 1.3-5 especially.The apparent density of each layer: in the 1st fibrage 1, preferred p1=4-40kg/m
3, be preferably 8-25kg/m especially
3In the 2nd fibrage 2, preferred p2=20-200kg/m
3, be preferably 25-80kg/m especially
3In addition, from giving sheet material 10 with fluffy sense, improve compression and then improve flexibility and the soft feeling aspect considers that the apparent density of sheet material 10 integral body is preferably 8-80kg/m simultaneously
3, be preferably 10-50kg/m especially
3
The 1st fibrage 1 and the 2nd fibrage 2 all contain fiber that solid curled as main formation fiber.As the fiber that solid has been curled, can use and the used same fiber of the 1st invention.
In the sheet material 10 of the present embodiment, because same with the 1st invention, the 1st fibrage 1 and the 2nd fibrage 2 all contain the fiber that solid has been curled, and therefore the advantage that produces is that these layers all are high at the recovery when in-plane extends.
All contain other advantages of the fiber that solid curled as the 1st fibrage 1 and the 2nd fibrage 2, recovery in the time of can listing compressed tablet material 10 and buffering sense be high.Particularly because protuberance 4 contains the fiber that solid has been curled, thereby recovery and buffering sense during compression protuberance 4 uprise.Its result is also high as the recovery and the buffering sense of sheet material integral body.The excessive slurry of the protuberance 4 when in addition, sheet material 10 contains immersion fluid is little.
In the present invention, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in so-called the 2nd fibrage 2 has been curled has been curled than the solid that contains in the 1st fibrage, the crispation number that is meant the fiber that the 2nd fibrage 2 contained solids have been curled is more than the crispation number of the fiber that the 1st fibrage 1 contained solid has been curled, and/or the coil diameter of the fiber that curled than the 1st fibrage 1 contained solid of the coil diameter of the fiber that curled of the 2nd fibrage 2 contained solids (diameter of the coiled type that produces of curling) is little.Crispation number is measured according to JIS L1015.Coil diameter is measured by the electron micrograph of fiber.
The amount of crimp height of the fiber that has curled than the solid that contains in the 1st fibrage for the amount of crimp that makes the fiber that the solid that contains in the 2nd fibrage 2 curled can use various methods.For example, the fiber as solid has been curled containing the occasion that presents curling potential crimping property fiber, can make in the following method.Moreover, in the following description, when simply claiming the potential crimping property fiber, based on context, be meant to present curling potential crimping property fiber and present any of potential crimping property fiber before that curl.
(a) in the 1st fibrage 1 and the 2nd fibrage 2, use the occasion of potential crimping property fiber not of the same race, state before the contained potential crimping property fiber crimp of each layer, the occasion that this potential crimping property fiber is curled under the same conditions, as the contained potential crimping property fiber of the 2nd fibrage 2, use than the 1st fibrage 1 contained potential crimping property fiber to cause curling fiber easily.Specifically, as the contained potential crimping property fiber of the 2nd fibrage 2, use to present the curling temperature potential crimping property fiber low fiber more contained than the 1st fibrage 1.To present curling temperature identical though perhaps use, and curls to such an extent that crispation number is many and/or coil diameter is little, as the contained potential crimping property fiber of the 2nd fibrage 2.In order to make it to curl to such an extent that crispation number is many and/or coil diameter is little, for example increase the eccentric degree of eccentric core-sheath-type composite fibre, the ratio of adjusting core composition and sheath composition gets final product.
(b) in the 1st fibrage 1 and the 2nd fibrage 2, use the occasion of potential crimping property fiber of the same race, the 1st fibrage 1 is contained hinder the fiber of the contained potential crimping property fiber crimp of the 1st fibrage 1.Particularly, (1) contains the potential crimping property fiber by the 1st fibrage 1 and the general fibre of crimp shrinkage does not take place, 2 of the 2nd fibrages are made of the potential crimping property fiber, and curling ratio the 2nd fibrage 2 contained the curling of potential crimping property fiber of the potential crimping property fiber that the 1st fibrage 1 is contained are hindered.In addition, (2) make the 1st fibrage 1 and the 2nd fibrage 2 all contain the potential crimping property fiber and the general fibre of crimp shrinkage do not take place, and make the cooperation ratio of the general fibre in cooperation ratio the 1st fibrage 1 of the general fibre in the 2nd fibrage 2 low.In this occasion, the 1st fibrage 1 contained curling of potential crimping property fiber also hindered than the 2nd fibrage 2 contained the curling of potential crimping property fiber.
In the 1st fibrage 1 or the 2nd fibrage 2, contain the occasion of the general fibre that hinders the potential crimping property fiber crimp,, for example can list, the fiber of not thermal contraction in fact under the temperature that begins to curl of potential crimping property fiber as this general fibre.Specifically can list heat-shrinkable but under the curling beginning temperature of potential crimping property fiber the fiber of not thermal contraction and do not have the fiber of heat-shrinkable in fact in fact.Particularly preferably use the heat fusing binder fibre.Thus, except that the amount of crimp of potential crimping property fiber was adjusted, the surface strength of protuberance 4 improved, and has prevented fluffing effectively.The cooperation ratio of the general fibre that the 1st fibrage 1 is contained, the viewpoint from the surface strength that improves protuberance 4 is preferably 10-90 weight %, is preferably 30-70 weight % especially.The ratio of the general fibre that the 2nd fibrage 2 is contained, lower than the 1st fibrage, be preferably 0-50 weight %, be preferably 0-30 weight % especially.
In the sheet material 10 of the present embodiment, the hydrophily of the 2nd fibrage 2 is than the hydrophily height of the 1st fibrage 1.Because the density gradient of this situation and previous narration, the sheet material 10 of the present embodiment produces the power that sucks liquid from the 1st fibrage 1 more strongly to the 2nd fibrage, when in fluid drainage to the 1 fibrage 1, is more promptly absorbed.The hydrophily size of the 1st fibrage 1 and the 2nd fibrage 2 for example can adopt in order to the size judgement of the surperficial liquid stream length of method mensuration down.The little occasion of surface liquid stream length, hydrophily is big, the big occasion of surperficial liquid stream length, hydrophily is little.
[assay method of surperficial liquid stream length]
Mensuration is to carry out under the humiture environment of 20 ℃ of 65%RH.Sheet material, sanitary napkin etc. leave standstill more than 12 hours at this environment, make for above-mentioned humiture, reach poised state fully.
(I) preparation of mensuration sample
Sanitary napkin ロ リ エ さ ろ さ ろ Network シ ヨ Application ウ イ Application ゲ な (medicine thing sale title: ロ リ エ Nr) only remove surface patch from Kao Corp's system.Replace it, sheet material is coiled on the sanitary napkin, fix in the application of anti-leakage layers side.In the case, if measure the 1st fibrolaminar surperficial liquid stream length, then with the 1st fibrage towards the surface.If measure the 2nd fibrolaminar surperficial liquid stream length, then with the 2nd fibrage towards the surface.
(II) mensuration of surperficial liquid stream length
The testing stand on inclined-plane is set with the acrylate plate.(for example 45 degree) are set at the angle of inclination of acrylate plate aptly.Angle is measured with goniometer, makes the gradient error be ± 1 degree.In addition, in the direction vertical, make the acrylate plate level with incline direction.Then, on the acrylate plate, place the mensuration sample.Measure specimen surface two or three times with light pressures such as scales, eliminate floating of sheet material.Under this state, use the micro-tubular pump with dripping simulate blood 1g to sheet material 10 seconds.At this moment, dropping uses the tip of pipe above the dropping position 10mm that measures sample.The dropping position of measuring sample is to the position of upside near 150mm, and for measuring the width central portion of sample from the bottom of measuring sample.As simulate blood, use edible red No. 2 painted ion exchange waters with 0.1g/l.Mensuration from sheet material simulated the initial wetting position of blood to simulate blood by the distance of the initial position that absorbs of sheet material, with its value as surperficial liquid stream length.Mensuration is carried out 5 times, asks its mean value.Among 5 times the mensuration, even simulate blood is not absorbed for 1 time yet, just reach the occasion of the bottom of measuring sample, the surperficial liquid stream length of its sheet material also is decided to be 150mm.In addition, in the moment that drips simulate blood 1g, simulate blood does not flow through from the sheet material surface fully, just all be absorbed, can not measure the occasion of surperficial liquid stream length, the upper end of wetted portions of sheet material that is determined at the moment that simulate blood do not expand is to the distance of lower end, with its value as surperficial liquid stream length.
For the hydrophily that makes the 2nd fibrage 2 hydrophily height than the 1st fibrage 1, for example be that main body constitutes the 1st fibrage 1 with the hydrophobic fibre, on the other hand, be that main body constitutes the 2nd fibrage 2 and gets final product with the hydrophilic fibre.The occasion that all constitutes at the 1st fibrage 1 and the 2nd fibrage 2 by hydrophobic fibre, the formation fiber of only giving the 2nd fibrage 2 is with the hydrophiling finish, perhaps, all give the hydrophiling finish to two fibrolaminar formation fibers, in its occasion, as the hydrophiling finish of giving to the formation fiber of the 2nd fibrage 2, use the hydrophiling degree and get final product than the high finish of giving to the formation fiber of the 1st fibrage 1 of hydrophiling finish.The hydrophiling finish can be coated on fiber surface, perhaps mixing go in the fiber also passable.The hydrophiling finish is coated on the occasion of fiber surface, can be coated in the raw fibre, perhaps, after forming fiber assembly, apply and also can with raw fibre.
The thickness of the sheet material 10 of the 2nd invention also depends on its concrete purposes, but considers preferred 0.7-13mm from bulkiness and compression aspect, preferred especially 1.3-10mm.About the thickness of each layer, the thickness of preferred the 1st fibrage 1 is 0.5-10mm, preferred especially 1-8mm.The thickness of preferred the 2nd fibrage 2 is 0.2-3mm, preferred especially 0.3-2mm.Thickness be according to the same method of the method for previously described relevant apparent density assay method at 0.49cN/cm
2Add and depress mensuration.
The viewpoint that presents sufficient compression and fluffy sense from the sheet material 10 that makes the 2nd invention considers that sheet material 10 preferred its Unit Weights (level ground amount) are 15-200g/m
2, be preferably 25-150g/m especially
2From same viewpoint, the Unit Weight of the 1st fibrage 1 is preferably 5-120g/m
2, be preferably 10-100g/m especially
2, the Unit Weight of the 2nd fibrage 2 is preferably 10-150g/m
2, be preferably 15-100g/m especially
2Unit Weight is that sheet material 10 is cut into the above size of 50mm * 50mm, and the formation determination sheet uses minimum scale to measure the weight that this measures sheet as the electronic balance of 1mg, obtains by being converted into Unit Weight.
The preferable production process of the sheet material 10 of the 2nd invention and the 1st invention are same.In addition, make the method for the percentage reduction of area of the 2nd fiber assembly greater than the percentage reduction of area of the 1st fiber assembly, also same with the 1st invention.(with regard to method (1)-(4) of the 1st invention description).In addition, by adopting this method (1)-(4), the amount of crimp height of the fiber that solid that the amount of crimp of the fiber that solid that the 2nd fibrage 2 is contained curled is contained than the 1st fibrage 1 has been curled.
The sheet material 10 that obtains like this is owing to produce density gradient from the 1st fibrage 1 to the 2nd fibrage 2.Therefore with this sheet material 10 as the impermeable application of anti-leakage layers of superficial layer, liquid that possesses permeability for liquids and between the superficial layer (surface patch) of the absorbing products of the absorbed layer of the liquid retainability of two interlayers and with the face of the 1st fibrage 1 side as the face of facing skin, the occasion that the 2nd fibrage 2 is disposed towards the application of anti-leakage layers side, the liquid that is excreted to the 1st fibrage 1 is absorbed rapidly.In addition, the surface of the 1st fibrage 1 is difficult to residual liquid.At the 1st fibrage 1 occasion of protuberance 4 is set, few to the contact area of skin, also have resiliency simultaneously, therefore obtain dressing the good absorbing products of sense.Absorber as absorbing products uses, the occasion that the 2nd fibrage 2 is disposed towards the application of anti-leakage layers side, the 1st fibrage 1 also promptly absorbs the liquid that enters from surface patch, and moves to the 2nd fibrage 2, therefore provides the high absorbing products of absorbability to become possibility.
In addition, sheet material 10 as the occasion that wiper uses, can be obtained and the same effect of the 1st invention.Sheet material 10 is formed the occasion of the Wet-wiping device of the surficial sheets of absorbing products or impregnation aqueous detergent, also can obtain and the same effect of the 1st invention.
The 2nd invention is not limited to above-mentioned embodiment.For example, in the above-described embodiment, the fiber that the 1st fibrage 1 contained solid has been curled, the amount of crimp of the fiber that it has all curled than the 2nd fibrage 2 contained solids is low, but replace this situation, the 2nd fibrolaminar apparent density than the high limit of the 1st fibrolaminar apparent density under, also can make the 1st fibrage 1 contain the amount of crimp same degree of fiber that a spot of and the 2nd fibrage contained solid curled or the fiber that has curled in this solid more than degree.
In addition, the sheet material of above-mentioned embodiment is the three-dimensional sheet that many protuberances are arranged, but replaces this situation, also can make the smooth sheet material that does not have protuberance.Such sheet material, the 2nd fibrage of the fiber that has curled by the solid of making the 1st fibrage contain the fiber that solid curled in advance respectively and containing or xenogenesis of the same race with this fiber for example uses bonding agent such as hotmelt to engage two-layer and obtains.
In addition, the constitutive requirements double replacement or the combination mutually aptly of the 1st invention and the 2nd invention.For example, in the three-dimensional sheet materials of the 1st invention, also can make up the constitutive requirements of the 2nd invention, promptly, the amount of crimp of the fiber that the 2nd fibrage contained solid has been curled, the amount of crimp height of the fiber that has curled than the 1st fibrage contained solid, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height.
Illustrate in greater detail the present invention by the following examples., scope of the present invention is not limited to such embodiment.
[embodiment 1]
To be raw material with the potential crimping property fiber CPP (trade name, the melt temperature (fusing point) of 2.2dtex * 51mm, sheath composition resin: 145 ℃) that spins long-pending (strain) system greatly, adopt combing method manufacturer weight 15g/m
2Fleece.Use hot dandy roll (145 ± 10 ℃) that fleece is carried out hot pressing line (embossing) processing, make the 1st fiber assembly.The embossing area occupation ratio is 28%.
The manufacturing of (2) the 2nd fiber assemblies
To be raw material with the potential crimping property fiber CPP (trade name, the melt temperature (fusing point) of 2.2dtex * 51mm, sheath composition resin: 135 ℃) that spins long-pending (strain) system greatly, adopt combing method manufacturer weight 30g/m
2The 2nd fiber assembly.
(3) manufacturing of three-dimensional sheet materials
Overlap the 1st fiber assembly and the 2nd fiber assembly, adopt ultrasonic wave embossing method that two fiber assemblies are engaged partly, obtain laminated body (layered product).The shape at each junction surface that embossing produces is circular, and its spread geometry is a rhombus trellis shown in Figure 1.In hot-blast stove, blow 130 ± 10 ℃ hot blast 5-10 second in the blowing gas stream mode.In view of the above, make potential crimping property fiber crimp contained in each fiber assembly, each fiber assembly direction in its face is shunk.At this moment, contained potential crimping property fiber in the 1st fiber assembly is owing to hinder it to curl by the hot pressing line processing of carrying out earlier, and therefore the percentage reduction of area of the 2nd fiber assembly is than the percentage reduction of area height of the 1st fiber assembly.Its result in the 1st fibrage that is formed by the 1st fiber assembly, forms many protuberances between the abutment.The three-dimensional sheet materials that obtains like this, its Unit Weight are 96.0g/m
2, the area occupation ratio at abutment is 7% of a three-dimensional sheet materials area.
[embodiment 2]
As the 1st fiber assembly, use following corpus fibrosum: contain the big of 50 weight % and spin the potential crimping property fiber CPP (trade name that long-pending (strain) makes, 2.2dtex the melt temperature (fusing point) of * 51mm, sheath composition resin: 135 ℃), and contain the big of 50 weight % and spin core-sheath-type heat fusing binder fibre NBF (the SH) (trade name that long-pending (strain) makes, 2.2dtex * 51mm), Unit Weight is 15g/m
2The not hot pressing line processing of this fiber assembly.In addition, other obtains three-dimensional sheet materials similarly to Example 1.In the heat treatment of laminated body, the contained potential crimping property fiber of the 1st fiber assembly is owing to existing the heat fusing binder fibre to hinder it to curl, and therefore the percentage reduction of area of the 2nd fiber assembly is than the percentage reduction of area height of the 1st fiber assembly.The three-dimensional sheet materials that obtains like this, its Unit Weight are 93.8g/m
2, the area occupation ratio at abutment is 7% of a three-dimensional sheet materials area.
[comparative example 1]
As the 1st fiber assembly, use the hydrophily spunbonded non-woven fabric (principal component: polypropylene, Unit Weight 13g/m of Toray Saehan Inc. system
2), in addition, obtain three-dimensional sheet materials similarly to Example 1.In the heat treatment of laminated body, do not shrink as the spunbonded non-woven fabric of the 1st fiber assembly.The three-dimensional sheet materials that obtains like this, its Unit Weight are 86.2g/m
2, the area occupation ratio at abutment is 7% of a three-dimensional sheet materials area.
[comparative example 2]
As the 1st fiber assembly, use hydrophobicity spunbonded non-woven fabric JB20R (trade name, the principal component: polypropylene, Unit Weight 20g/m of Toray Saehan Inc. system
2), in addition, obtain three-dimensional sheet materials similarly to Example 1.In the heat treatment of laminated body, do not shrink as the spunbonded non-woven fabric of the 1st fiber assembly.The three-dimensional sheet materials that obtains like this, its Unit Weight are 100.4g/m
2, the area occupation ratio at abutment is 7% of a three-dimensional sheet materials area.
[comparative example 3]
As the 1st fiber assembly, use (blows hot blast with the saturating mode of wind, air through) to big and spin core-sheath-type heat fusing binder fibre NBF (SH) (trade name, the 2.2dtex * 51mm) implement saturating formula adhesive-bonded fabric (the Unit Weight 14g/m of heat treated wind of long-pending (strain) system for the carded web of raw material
2), in addition, obtain three-dimensional sheet materials similarly to Example 1.In the heat treatment of laminated body, do not shrink as the saturating adhesive-bonded fabric of the wind of the 1st fiber assembly.The three-dimensional sheet materials that obtains like this, its Unit Weight are 91.3g/m
2, the area occupation ratio at abutment is 7% of a three-dimensional sheet materials area.
[performance evaluation]
About the three-dimensional sheet materials that in embodiment and comparative example, obtains, with following method measure dust capture rate, return liquid measure (wet back), liquid expanding area, thickness when moistening.These be the results are shown in following table 1.
[capture rate of dust]
On the wear ring (flow ring) of 1mm * 1mm, scatter the following dust A-C of ormal weight respectively individually.Make the Network イ Star Network Le wiper (trade name) of colored king (strain) system that each three-dimensional sheet materials is installed, reciprocal wiping is 5 times on wear ring., measure the weight (for dust B be radical) of the dust that be attached to three-dimensional sheet materials, calculate capture rate (%) thereafter.
Dust A: bread flour (particle diameter 1-1.4mm), 0.2g
Dust B: hair (long 10cm, the about 100 μ m of diameter), 10 * 5 times
7 kinds of dusts of dust C:JIS test, 0.3g
[returning liquid measure]
Take out absorber from the sanitary napkin ロ リ エ (trade name) of flower king (strain) system, place each three-dimensional sheet materials thereon, place acrylate plate (the load 4.9cN/cm of perforate more thereon
2).6g defiber horse blood (Japanese バ イ オ テ ス ト system) is injected in hole by the acrylate plate.Begin to remove the acrylate plate from the complete absorbed moment of blood through after 1 minute.Then, overlapping 20 filter paper add about 65cN/cm again on three-dimensional sheet materials
2Load, make filter paper absorb return blood.After 5 minutes, lay down load, measure the weight of 20 filter paper.Obtain poor with the weight that absorbs the filter paper before the blood, with its value as time liquid measure.
[liquid expanding area]
Take out absorber from the sanitary napkin ロ リ エ (trade name) of flower king (strain) system, place each three-dimensional sheet materials thereon, place acrylate plate (the load 5g/cm of perforate more thereon
2).6g defiber horse blood (Japanese バ イ オ テ ス ト system) is injected in hole by the acrylate plate.Begin to remove the acrylate plate from the complete absorbed moment of blood through after 1 minute.Then, on three-dimensional sheet materials, add about 65cN/cm
2Load.After 5 minutes, lay down load, use visual resolver to measure the expanding area of the blood on three-dimensional sheet materials surface.
When moistening [thickness]
Three-dimensional sheet materials is immersed in the ion exchange water, is placed on overlapping 5 filter paper after putting forward.Three-dimensional sheet materials is added 65.3cN/cm
2Load, the moisture that filter paper is absorbed remain out.After 1 minute, lay down load, adopt aforesaid KES method to be determined at 0.49cN/cm
2Thickness under the load.Also under same condition, measure about impregnated in ion exchange water thickness before.
Table 1
| Embodiment | Comparative example | |||||
| 1 | 2 | 1 | 2 | 3 | ||
| The capture rate of dust (%) | Dust A | 67.5 | 70.3 | 28.5 | 29.3 | 56.0 |
| Dust B | 88.0 | 100.0 | 32.0 | 34.0 | 84.0 | |
| Dust C | 42.3 | 61.4 | 44.3 | 41.7 | 51.7 | |
| Return liquid measure (mg) | 2270 | 1826 | 2410 | 1831 | 2344 | |
| Liquid expanding area (cm 2) | 10.57 | 10.75 | 14.10 | 18.99 | 15.60 | |
| Initial stage thickness (mm) | 3.30 | 2.42 | 3.52 | 3.33 | 3.27 | |
| Thickness when moistening (mm) | 3.08 | 2.33 | 3.09 | 3.10 | 2.72 | |
| Thickness slip (%) | 6.67 | 3.72 | 12.22 | 6.91 | 16.80 | |
Distinguish by the result shown in the table 1, the three-dimensional sheet materials of each embodiment (the present invention's product), with the sheet material ratio of comparative example, the catching excellence of fibrous dust resemble the hair and bigger dust resemble the bread flour.Distinguish in addition, the three-dimensional sheet materials of each embodiment, time liquid measure is few, and the liquid expanding area is also little.Also distinguish, the three-dimensional sheet materials of each embodiment, the thickness slip when moistening is little, even when moistening, also can keep the shape of protuberance well.
Three-dimensional sheet materials of the present invention, the recovery when in-plane stretches and the recovery excellence when thickness direction compresses.In addition, even the rigidity height of protuberance is the moistening convex form of also keeping well.At protuberance, the catching excellence of fibrous dust, and between protuberance, the catching excellence of the bigger dust of bread flour and so on.And, three-dimensional sheet materials of the present invention, because time liquid measure is few, the liquid expanding area is little, therefore with its occasion as the surface patch use of absorbing products, has prevented the contrary skin that returns the user of the liquid of being drained, and has also suppressed to make being clamminess of skin.
In addition, sheet material of the present invention, be liquid the imbedibility height, can absorb the fluffy of liquid rapidly and the material of soft feeling is arranged.
Claims (15)
1. three-dimensional sheet materials, its the 2nd fibrage lamination by the fiber that the 1st fibrage that contains the fiber that solid curled and the solid that contains or xenogenesis of the same race with this fiber have been curled forms, aforementioned two fibrages engage partly at many junction surfaces, integrated at thickness direction, the 1st fibrage protrudes between each junction surface, forms many protuberances.
2. the three-dimensional sheet materials of putting down in writing according to claim 1, the aforementioned fibers that the solid that contains in the 2nd fibrage has been curled constitutes by presenting curling potential crimping property fiber, and the aforementioned fibers that the solid that contains in the 1st fibrage has been curled is by presenting curling potential crimping property fiber or the manufactured fiber of machine crimp constitutes.
3. the three-dimensional sheet materials of putting down in writing according to claim 2, it is to make by following method: the 1st fiber assembly that will contain the potential crimping property fiber, the 2nd fiber assembly lamination with the latent crimp fiber that contains or xenogenesis of the same race with this latent crimp fiber, make the two fiber assemblies bonding laminated body that constitutes of heat fusing partly, follow this laminated body of heat treatment, make the aforementioned potential crimping property fiber crimp that is contained in each fiber assembly, make the direction thermal contraction in its face of each fiber assembly, form the 1st fibrage and the 2nd fibrage respectively by the 1st fiber assembly and the 2nd fiber assembly, and when the three-dimensional sheet materials thermal contraction, percentage reduction of area by making the 2nd fiber assembly is greater than the percentage reduction of area of the 1st fiber assembly, the 1st fibrage is protruded, form many aforementioned protuberances.
4. the three-dimensional sheet materials of putting down in writing according to claim 3 contains under aforementioned heat treated temperature the fiber of not thermal contraction in fact in the 1st fiber assembly, do not contain this fiber in the 2nd fiber assembly.
5. the three-dimensional sheet materials of putting down in writing according to claim 3, all containing under aforementioned heat treated temperature the fiber of not thermal contraction in fact among the 1st fiber assembly and the 2nd fiber assembly, in the 1st fiber assembly this fiber contain ratio in the 2nd fiber assembly this fiber contain proportional height.
6. the three-dimensional sheet materials of putting down in writing according to claim 3 before with the 1st fiber assembly and the 2nd fiber assembly lamination, is implemented the processing of hot pressing line in advance to the 1st fiber assembly.
7. the three-dimensional sheet materials of putting down in writing according to claim 3, the curling beginning temperature of the potential crimping property fiber that contains in the 1st fiber assembly is than the curling beginning temperature height of the potential crimping property fiber that contains in the 2nd fiber assembly.
8. the three-dimensional sheet materials of putting down in writing according to claim 1, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage has been curled has been curled than the solid that contains in the 1st fibrage, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height.
9. the three-dimensional sheet materials of being put down in writing according to Claim 8 all contains the aforementioned fibers that the staple fiber that presents curling potential crimping property fiber has curled as solid among the 1st fibrage and the 2nd fibrage; Aforementioned potential crimping property fiber that contains in the 1st fibrage and the aforementioned potential crimping property fiber that contains in the 2nd fibrage are xenogenesis; Under the state before the aforementioned potential crimping property fiber crimp that each layer contained, make the occasion of this potential crimping property fiber crimp under the same conditions, the aforementioned potential crimping property fiber that the aforementioned potential crimping property fiber that the 2nd fibrage is contained is contained than the 1st fibrage takes place to curl easily.
10. the three-dimensional sheet materials of being put down in writing according to Claim 8 all contains the aforementioned fibers that the staple fiber that presents curling potential crimping property fiber has curled as solid among the 1st fibrage and the 2nd fibrage; Aforementioned potential crimping property fiber that contains in the 1st fibrage and the aforementioned potential crimping property fiber that contains in the 2nd fibrage are of the same race; The 1st fibrage contains aforementioned potential crimping property fiber and general fibre curling or that shrink does not take place, and the 2nd fibrage only is made of aforementioned potential crimping property fiber or contains aforementioned potential crimping property fiber and general fibre curling or that shrink does not take place; The 2nd fibrage contains the occasion of aforementioned potential crimping property fiber and aforementioned general fibre, and the cooperation ratio of the described general fibre of cooperation ratio in the 1st fibrage of the described general fibre in the 2nd fibrage is low.
11. the three-dimensional sheet materials of being put down in writing according to Claim 8, wherein the 2nd fibrolaminar water-wetness is than the 1st fibrolaminar water-wetness height.
12. the three-dimensional sheet materials of putting down in writing according to claim 11, wherein the 1st fibrage and the 2nd fibrage constitute by hydrophobic fibre, only the 2nd fibrolaminar formation fiber is given the hydrophiling finish or all given the hydrophiling finish to two fibrolaminar formation fibers, as the hydrophiling finish of giving to the 2nd fibrolaminar formation fiber, used than the high finish of giving to the 1st fibrolaminar formation fiber of hydrophiling finish hydrophiling degree.
13. sheet material, its the 2nd fibrage lamination by the fiber that the 1st fibrage that contains the fiber that solid curled and the solid that contains or xenogenesis of the same race with this fiber have been curled forms, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage has been curled has been curled than the solid that contains in the 1st fibrage, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height.
14. according to the sheet material that claim 13 is put down in writing, wherein said two fibrages engage partly at many junction surfaces, and are integrated at thickness direction, the 1st fibrage protrudes between each junction surface, forms many protuberances.
15. absorbing products, it possesses the superficial layer of permeability for liquids, the absorbed layer of impermeable application of anti-leakage layers of liquid and the liquid retainability between this is two-layer, wherein, as aforementioned surfaces layer or absorbed layer, use following sheet material: by the 1st fibrage that contains the fiber that solid curled, the 2nd fibrage lamination of the fiber that has curled with the solid that contains or xenogenesis of the same race with this fiber forms, the amount of crimp height of the fiber that the amount of crimp of the fiber that the solid that contains in the 2nd fibrage has been curled has been curled than the solid that contains in the 1st fibrage, the 2nd fibrolaminar apparent density is than the 1st fibrolaminar apparent density height; Aforementioned sheet material is configured to, and aforementioned the 2nd fibrage is towards aforementioned application of anti-leakage layers side.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
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| JP2002375378A JP3808032B2 (en) | 2002-12-25 | 2002-12-25 | Three-dimensional sheet material |
| JP2002375378 | 2002-12-25 | ||
| JP2003184445 | 2003-06-27 | ||
| JP2003184445A JP4219223B2 (en) | 2003-06-27 | 2003-06-27 | Sheet material |
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| Publication Number | Publication Date |
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| CN1509864A CN1509864A (en) | 2004-07-07 |
| CN1331661C true CN1331661C (en) | 2007-08-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10195092B2 (en) | 2014-03-06 | 2019-02-05 | The Procter & Gamble Company | Multi-component topsheets |
| US10206826B2 (en) | 2014-03-06 | 2019-02-19 | The Procter & Gamble Company | Three-dimensional substrates |
| US10285874B2 (en) | 2014-03-06 | 2019-05-14 | The Procter & Gamble Company | Multi-component topsheets |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5842353B2 (en) * | 2010-04-13 | 2016-01-13 | Jnc株式会社 | Bulky nonwoven fabric |
| JP5884733B2 (en) * | 2010-10-05 | 2016-03-15 | Jnc株式会社 | Laminated nonwoven fabric and its products |
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| US5382400A (en) * | 1992-08-21 | 1995-01-17 | Kimberly-Clark Corporation | Nonwoven multicomponent polymeric fabric and method for making same |
| US5618610A (en) * | 1994-08-29 | 1997-04-08 | Uni-Charm Corporation | Nonwoven fabric wiper and method for making it |
| JPH09158022A (en) * | 1995-12-07 | 1997-06-17 | Daiwabo Co Ltd | Bulk nonwoven fabric and its production and female part for hercule's fastener (r) |
| CN2258879Y (en) * | 1996-03-14 | 1997-08-06 | 天津美达有限公司 | Multilayer compound heat insulating padding |
| JP2001189961A (en) * | 1999-12-28 | 2001-07-10 | Matsushita Electric Ind Co Ltd | Wireless unit |
| CN1348026A (en) * | 2000-10-12 | 2002-05-08 | 花王株式会社 | Bulky sheet material with three-dimensional raised parts |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10195092B2 (en) | 2014-03-06 | 2019-02-05 | The Procter & Gamble Company | Multi-component topsheets |
| US10206826B2 (en) | 2014-03-06 | 2019-02-19 | The Procter & Gamble Company | Three-dimensional substrates |
| US10285874B2 (en) | 2014-03-06 | 2019-05-14 | The Procter & Gamble Company | Multi-component topsheets |
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| CN1509864A (en) | 2004-07-07 |
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