CA2187894A1 - Mechanical fastener for disposable article - Google Patents
Mechanical fastener for disposable articleInfo
- Publication number
- CA2187894A1 CA2187894A1 CA002187894A CA2187894A CA2187894A1 CA 2187894 A1 CA2187894 A1 CA 2187894A1 CA 002187894 A CA002187894 A CA 002187894A CA 2187894 A CA2187894 A CA 2187894A CA 2187894 A1 CA2187894 A1 CA 2187894A1
- Authority
- CA
- Canada
- Prior art keywords
- end portion
- face
- mechanical fastening
- tab
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
- A61F13/62—Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop
- A61F13/622—Fabric strip fastener elements, e.g. hook and loop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S24/00—Buckles, buttons, clasps
- Y10S24/11—Adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/27—Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/33—Buckles, buttons, clasps, etc. having adhesive fastener
Abstract
A mechanical fastening system for a diaper (1) or like disposable garment of a male mechanical fastening tab (20) (e g., a hook-type fastener) attached to a comer or edge region (4) of the garment with a mating fibrous web (5) on an opposing corner or edge region (7). The male mechanical fastening tab (20) creates two areas of attachment, an outward portion extending beyond the first comer or edge region (4) and an inward area extending inward of the first corner or edge region (4) where both areas of attachement engage the fibrous web (5) on the opposing corner or edge (7). The male mechanical fastening tab (20) with the fibrous web (5) creates a secure non-rotational attachment using a single fastening tab (20).
Description
~` '5'0'9' 21 8789~ j ", ~ECHANIC"r FA8TENER FOR pI~pn~RT.R ~V'PICLE
;
Ba~ h-,L uu,-d and Field of the Invention The inventLon is cu.,ceL.,ed with ~i~po~Ahle diapers lO and incontinent articles having refastenable -- ni closures and is specif ically concerned with illl~JLUV~ Ls in fit and closure stability.
Conventional commercial ~1 ~po~hle diapers and adult incontinent products typically use ~Les-uL~ -15 sensitive adhesive (PSA) fastening tabs to close the diaper. Typically these PSA fastening tabs extend beyond the side edge of the diaper at a f irst ear or corner portion and attach to an opposing ear or corner portion as ~he opposing ears are overlapped in placing 20 the diaper around the user. As such, the PSA fastening tab is p~rr~n~ntly attached at a "manufacturers end" to one ear directly adjacent the side edge of that ear and refastenably attached at an inward location on the opposing ear or corner portion by a free end of the PSA
25 fastening tab.
An i vv. -~ on the above basic adhesive closure system is the inclusion of a sec~n~Ary pair of closure elements, which also engage when the two opposing ears are overlapped. This so-called "inner fastening means"
30 is generally formed by placing a fastening element on an inner face the first ear, which engages with a CuLLe:,~u"ding or matched fastening surface or element on the outer face of the opposing ear. In this manner, the ears are directly secured to each other at their 35 overlapping faces as well as by the conventional PSA
fastening tab. The use of secondary closure elements is proposed in U.S. Patent No. 4,699,622, which W095/30397 ~ 1 ~37~9~ , ,,1 c ~4 describes an elasticated diaper using an outer fastening tab and an inner fastening means. The conventional outer fastening tab extends from the longitudinal side edge at a first corner of the diaper.
S The inner fastening means Ls described as potentially including "VELCR0" strips, adhesive patches, buttons or snaps, but is preferably a r- '-nicAl fastening element placed on the outer face of the second sppoc;n~ corner that engages with the topsheet nU,-..Jv-:n forming the 10 inner face of the first corner. Specific i, v~ -t~
to the arrangement in U. S . Patent No . 4, 699, 622 are described in U. S . Patent No . 5, 019, 072, where the inner f~6tening means is a specifically described pair of overlapping cohesive or peelable adhesive patches on 15 both the first corners or ears and the second opposing corners or ears, which patches are positioned such that they overlap when the opposing ears or corners of the diaper are overlapped when attaching the outer adhesive fastening tabs. U.S. Patent No. 5,066,289 describes an 20 illl~JL~V- t of the preferred design in U.S. Patent No.
4, 699, 622, by providing a specif ic foraminous substrate on the inner f ace of the f irst corner f or use as the release tape for the outer pressure-sensitive adhesive fastening tab. This foraminous release tape increases 25 the attachment effectiveness of a male mechanical inner f astening means located on the second opposing ear of the diaper. U.S. Patent No. 3,610,244 also proposes s~csn~l~ry closure elements. The patent describes using a conventional PSA fastening tab on a first corner of 30 the diaper. In addition the inner face of this first corner contacts a PSA patch located on the outside face of the second opposing corner when the two opposing corners are attached in an overlapping relation with the conventional PSA fastening tab. The four points of 35 2dhesive attachment are described as providing more secure fit for active babies.
;
Ba~ h-,L uu,-d and Field of the Invention The inventLon is cu.,ceL.,ed with ~i~po~Ahle diapers lO and incontinent articles having refastenable -- ni closures and is specif ically concerned with illl~JLUV~ Ls in fit and closure stability.
Conventional commercial ~1 ~po~hle diapers and adult incontinent products typically use ~Les-uL~ -15 sensitive adhesive (PSA) fastening tabs to close the diaper. Typically these PSA fastening tabs extend beyond the side edge of the diaper at a f irst ear or corner portion and attach to an opposing ear or corner portion as ~he opposing ears are overlapped in placing 20 the diaper around the user. As such, the PSA fastening tab is p~rr~n~ntly attached at a "manufacturers end" to one ear directly adjacent the side edge of that ear and refastenably attached at an inward location on the opposing ear or corner portion by a free end of the PSA
25 fastening tab.
An i vv. -~ on the above basic adhesive closure system is the inclusion of a sec~n~Ary pair of closure elements, which also engage when the two opposing ears are overlapped. This so-called "inner fastening means"
30 is generally formed by placing a fastening element on an inner face the first ear, which engages with a CuLLe:,~u"ding or matched fastening surface or element on the outer face of the opposing ear. In this manner, the ears are directly secured to each other at their 35 overlapping faces as well as by the conventional PSA
fastening tab. The use of secondary closure elements is proposed in U.S. Patent No. 4,699,622, which W095/30397 ~ 1 ~37~9~ , ,,1 c ~4 describes an elasticated diaper using an outer fastening tab and an inner fastening means. The conventional outer fastening tab extends from the longitudinal side edge at a first corner of the diaper.
S The inner fastening means Ls described as potentially including "VELCR0" strips, adhesive patches, buttons or snaps, but is preferably a r- '-nicAl fastening element placed on the outer face of the second sppoc;n~ corner that engages with the topsheet nU,-..Jv-:n forming the 10 inner face of the first corner. Specific i, v~ -t~
to the arrangement in U. S . Patent No . 4, 699, 622 are described in U. S . Patent No . 5, 019, 072, where the inner f~6tening means is a specifically described pair of overlapping cohesive or peelable adhesive patches on 15 both the first corners or ears and the second opposing corners or ears, which patches are positioned such that they overlap when the opposing ears or corners of the diaper are overlapped when attaching the outer adhesive fastening tabs. U.S. Patent No. 5,066,289 describes an 20 illl~JL~V- t of the preferred design in U.S. Patent No.
4, 699, 622, by providing a specif ic foraminous substrate on the inner f ace of the f irst corner f or use as the release tape for the outer pressure-sensitive adhesive fastening tab. This foraminous release tape increases 25 the attachment effectiveness of a male mechanical inner f astening means located on the second opposing ear of the diaper. U.S. Patent No. 3,610,244 also proposes s~csn~l~ry closure elements. The patent describes using a conventional PSA fastening tab on a first corner of 30 the diaper. In addition the inner face of this first corner contacts a PSA patch located on the outside face of the second opposing corner when the two opposing corners are attached in an overlapping relation with the conventional PSA fastening tab. The four points of 35 2dhesive attachment are described as providing more secure fit for active babies.
2 ~ 878 94 ~wo 95/30397 r~
Although use of a se~ closure on the overlapping corners provides i _~,v~cl fit by inhibiting rotational shifting of the overlapping corners of the diaper, each with respect to each other, either from 5 wearer ~ ,v~ - t or forces from ~he elasticized portions of the diaper, these systems are often ~YreP~l;n~ly complicated to manufacture, reS~uiring up to eight separate adhesive or mechanical fastening elements per diaper .
rv of the Invention The invention is directed to a m~ -n;cAl, or hook and loop, closure system for a ~liRposAhle garment, specifically, disposable incontinent products such as a 15 diaper . The male mechanical f astening tab has a f irst end extending beyond the outer side edge of a f irst ear or corner, and a second end extending inward of the outer side edge of the first corner. Both ends of the -- hAnirAl fastening tab are engagable with a mating, 20 woven, stirhhon~l~d, knitted or the like, or no.,. .v~l~
web on the second opposing ear corner, the mechanical fastening tabs two ends serve as an outer mechanical fastening tab element and an inner panel face-to-panel face fastening element. The two r-~hAn;ral fastening ~5 elements provided by the invention closure system provide improved f it and closure stability using a simple and easy to apply single mechanical fastening tab .
Although use of a se~ closure on the overlapping corners provides i _~,v~cl fit by inhibiting rotational shifting of the overlapping corners of the diaper, each with respect to each other, either from 5 wearer ~ ,v~ - t or forces from ~he elasticized portions of the diaper, these systems are often ~YreP~l;n~ly complicated to manufacture, reS~uiring up to eight separate adhesive or mechanical fastening elements per diaper .
rv of the Invention The invention is directed to a m~ -n;cAl, or hook and loop, closure system for a ~liRposAhle garment, specifically, disposable incontinent products such as a 15 diaper . The male mechanical f astening tab has a f irst end extending beyond the outer side edge of a f irst ear or corner, and a second end extending inward of the outer side edge of the first corner. Both ends of the -- hAnirAl fastening tab are engagable with a mating, 20 woven, stirhhon~l~d, knitted or the like, or no.,. .v~l~
web on the second opposing ear corner, the mechanical fastening tabs two ends serve as an outer mechanical fastening tab element and an inner panel face-to-panel face fastening element. The two r-~hAn;ral fastening ~5 elements provided by the invention closure system provide improved f it and closure stability using a simple and easy to apply single mechanical fastening tab .
3 0 Brief Descri~ion of the Drawinqs FIG . 1 is a cut-away plan view of a f irst ho~ of the invention showing a male mechanical fastening tab placed on a side corner of a diaper.
FIG. 2 is a sectional side view of the FIG. 1 3 5 ~mho~; ~ t .
21 ~78~
Woss/303s7 p~ ",_ ~4 FIG. 3 i6 a p~L~e- ~ive view of a ~icpocshle diaper with the ~ n; c9 1 f astener closure system 6hown in FIGS. 1 and 2.
FIG. 4 is a side view of a second . ~ -nt of 5 the invention.
FIG. 5 is a side cut-away view of a third i - L of the invention .
FIG . 6 is a side view of the FIG . 5 Pmhotl i - L
prior to application to the diaper.
FIG. 7 is a side cut-away view of a fourth ~mho~ of the invention.
FIG. 8 is a side view of the FIG. 7 Pmho~l; L
prior to application to a diaper.
FIG. 9 is a side cut-away view of a fifth 15 . ' ';- L of the invention.
FIG. 10 is a side cut-away view of a sixth L of the invention.
Dr~rATr r n DESCRIPTION OF THE lNV ~
The following detailed description of the invention is made with respect to certain pref erred embodiments of t~he invention closure system on a conventional ~licposlhle diaper chassis. However, it would be apparent to one skilled in the art that the preferred Prho~;r-nts of the invention mechanical fastener closure systems would be applicable to other articles, such as hospital gowns, caps, incontinent garments, other diaper designs and the like.
Referring to FIGS . 1-3, a f irst preferred embodiment of the invention mechanical closure system is disclosed with respect to a conventional diaper chassis absorbent body (1~. The diaper absuLlel.~ body (l) comprises a liguid-p~ --hle topsheet (2) and a liquid-; F~L -shle b~-kqh~et (3), between which is a conventional absorbent pad (not shown). At least a f irst corner ( 4 ) at a f irst end ( 8 ) of the diaper chassis (1) has a mechanical fastening tab (20) ~0 9SI3~397 2 ~ 8 7 ~ 9 4 ~ ? ~4 ~ ci~n-~ to adhere to a mating =? ~nicAl fastening element (5), and/or the h~cl~che~t (3), at a second end (g) of the diaper chassis (1). When the diaper is worn, i.e. when the invention ~ ` -nicAl fastening - 5 closure system is in use, the first corners (4) at the first end (8) of the disposable diaper overlap with COLL-~L~ n1 second opposing corners (7) at the opposing end (9) of the diaper chassis, so that the two Prsin~l corners (4) and (7) have mutually abutting faces. In the conventional diaper chassis design of FIG. 3, where both first corners (4) are placed over both CULLC~ V~1;ng second opposing corners (7) and the r~ ni~Al fastening elements (20) engage with the bA~ kch-~t (3) and/or the mating mechanical fastening element (5), the diaper chassis defines a waist opening (10) encircling the torso of the wearer.
The liquid p~L -hle topsheet (2) would comprise any conventional material known for this use, including spunbond webs, meltblown webs, carded webs, and the like, which conventionally are formed of thermoplastic and hydrophobic polymer f ibers, such as polyolef in or polyester f ibers .
The backsheet (3) is a liquid-impermeable web or film and conventionally is a thin polymer film, such as a thin polyolefin film, i.e., polyethylene or polypropylene, mixtures, blends or coextruded versions, generally less than 2 mils thick. Liquid~ ble, but vapor-permeable microporous f ilms may also be used to form the backsheet (3).
In a preferred embodiment, the h~A~ kche~t (3) comprises a laminate of a liquid-i --hle film with a nonwoven or woven, stitchbonded, knitted or the like, fibrous web, which fibrous web is engagable with the mechanical fastening structures (25) on the mechanical fastening tab (20). Suitably, this laminate can be formed by adhesive lamination, pattern welding, i.e., sonic or heat or cold welding, or direct formation of 21 ~7~4 Wo 9~30397 . ~ 74 the web on all or part of the liquid-; --hl A film. 1--The f ibrous web would f ace outward so as to be ~-n ~ 7~hl~ with the mechanical fastening tab.
Preferably, a fibrou6 web, provided as an outer 5 layer of a h~Arkch~t laminate ~3) or a mating mechanical element (5), will have sufficient fiber loft, fiber spacing, and fiber size to allow penetration by the mechanical fastening ~LLU~:~UL~S (25) of tab (20) but sufficient fiber density and size so 10 that a substantial portion of the r- `-n;cAl fastening ~LU~.~UL~S (25) engage fibers of the web.
Specifically, the hr~kch~et (3), or mating ~ -nirA~ fastening element (5), can be a laminate of liquid~ ~eL -hle film and a loop fabric, such as those described in U.S. Pat. No. 5,176,670, or any other conventional loop fabric. The loop fabric can be any conventional fibrous loop, including nu., ~,v-:..s, fabric, provided wit,h suitable backing(s) as required.
The fabrics are formed of conventional fibers in~ ;n~
20 nylon, polyester, polypropylene, or other like synthetic or natural fibers. A preferred loop fabric would be such as descri~ed in U.S. Pat. No. 5,2S6,231, where corrugated oriented f ibers are extrusion bonded to a thermoplastic backing, "SCOTCH-MATE" loop fabrics 25 (available from 3M Company), or ''MILLILûCK'' (a sti~hhon-lecl loop fabric available from M;11;kl~r~
Company) .
The fibrous web, including loop fabrics, may also be extrusion laminated to a liquid-i ~ -~hle barrier 30 layer on one face of the fibrous web, which can then be used as the backsheet or mating mechanical f astening element (S) or further laminated to a film, a scrim, or the like, for added strength.
In the f irst embodiment of the invention closure 3s system, shown in FIGS. 1 and 2, the mechanical ~astening tab (20) is provided with male mechanical fastening structures (25~, which can be any suitable 21 8789~
~o 9s/3o397 1 _-,. l4 fiber engaging shape. A general fiber en~in~ shape comprises an upstanding stem having a base stem portion (28) and a distal fiber engaging element t29~ at the outermost end of the stem (25). The base stem portion (28) is generally narrower than the fiber en~
element (29) over its full length and has no outward protrusions or fiber engaging structures. Generally the stem portion (28) has straight sides or taper5 inwardly from the fastening tab (20) face to the fiber lo engaging element (29). The fiber engaging element (29) can be in the shape of a -' . , circular disk, J-hook, bilobal (T-shaped), multilobal or any other suitable shape capable of engaging f ibers . The male r?ch:~nic~l fastening structure from stem base (28) to outermost surface of the fiber engaging element (29), generally is at least 75 microns high, preferably 200 to 400 microns high. Suitable materials for forming the hook include thermoplastic polymers, such as polyester, polyolefins, nylons, and the like.
The mechanical fastening tab (20) is provided with an outward end portion (21) extending beyond the edge (11) of the corner (4) and an inward end portion (22) extending into the diaper chassis (~) corner (4), which two end portions (21 and 22) are separated by a transition region (23). Both the inward end portion (22) and the outward end portion (21) are capable of engaging the fibrous mating mechanical fastening element(s) (5) and/or an outer fibrous web of a backsheet laminate (3). The outward end portion (21) provides a convenient grippable attachment for easy placement and removal of the male mechanical fastening tab 20. The inward end portion (22) when engaged with backsheet (3) or mating fastening elements (5) limits rotational shifting of the opposing corners (4) and (7), each with respect to the other, during normal wear and usage.
f ~f f ~ $; ~5 WO 95/30397 2 1 8 7 8 9 ~ r ~ 74 1--In the ~ ho~ L of Figs . 1 and 2, the ~n i C~ 1 fastening tab t20) is attached to the diaper chassis (1) at a face (26) opposite the face (27) containing the male -- -nirAl fastening structures (25). The 5 inward end portion (22) can be attached to the diaper chassis (1) by any method which does not substantially destroy or impair the f iber engaging function of the male mechanical fastening structures (25) on the inward end portion (22), which includes adhesive bonding, 10 intermittent or spot welding (sonic, heat or cold welding, or the like) or the like.
Fastening tab backing (24) is preferably an integral or separate thermoplastic film formed of the same thermoplastic polymer as a male r- '-n;l~Al 15 fastening structures (25), however backing (24) could be a f ibrous web structure where the male mechanical fastening structures are formed by knitting or a like operation. Other ba~kings and substrates can also be used including conventional thermoplastic films, 20 fibrous webs or the like.
FIG. 4 illustrates an alternative embodiment of the invention mechanical fastening closure system, where like numerals indicate like elements. In this Prl~o~ L, the mechanical fastening tab (20) is 25 attached to a backing substrate (32), which is provided with an extending fingerlift portion (33), free of mechanical fastening structures or adhesives. The fingerlift portion (33) allows the fastening tab/backing substrate laminate t30) to be gripped for 30 removal. Backing structure (32) can be any substrate provided it is flexible, and would conventionally be a thermoplastic film or fibrous web. The use of backing (32) allows mechanical fastening tab (20) to be applied via a continuous pressure-sensitive adhesive layer 35 (31). For example the mechanical fastening tab (20) can be cut from a continuous pressure-sensitive adhesive coated tape. The tape could be continuously .
~C 2 1 8`~ 8 9~
laminated to the backing ~32) and then cut into individual mechanical fas~ening tab laminates (30) and adhered to the diaper chassis ~1) without on-line adhesive coating or welding of the inward end portion 5 (22) to the diaper chassis (1).
FIG. 5 illustrates an alternative embodiment of the FIG. 4 structure wherein an additional reinforcing element (36) is provided so as to provide more secure attachment of the mechanical fastening tab (20) outward 10 end portion (21), to the diaper chassis (1). This reinforcing element (36) would generally be a PSA tape adhered to the diaper chassis at one end and the mechanical fastening element (20) outer end (21) at the other end, either directly or through the backing (32) 15 as shown in FIG. 5. The structure shown in FIG. 5 can be assembled from separate individual tapes or films on a diaper line or provided as a prelaminate tape structure, such as shown in FIG. 6. With the Fig. 6 prelaminate tape structure the reinforcing element (36) 20 and the backing (32) would be preferably provided with low adhesion backsize or release coatings (38) and (39) to allow the prelaminate structure to be unrolled from a continuous roll as a tape without blocking of the adhesive layers (37) and (31). The reinforcing element 25 (36) could be used with other embodiments of the inventions as well, such as the embodiment of Fig. 1.
The FIGS. 7 and a em'oodiment is a variation of the FIGS. 5 and 6 embodiments where the backing substrate (40) extends into the diaper chassis at an end (45), 30 providing the mechanical fastening element (20) with two points of permanent attachment to the diaper chassis, such as in the FIGS. 5 and 6 embodiment, without a separate reinforcing element (36) . An optional variation of this embodiment, as well as the embodiments AMENDED SHEET
_g_ .
7 . ~ a ;~
of FIGS. 4-6, and like structures, is that a finger lift portion (43) is provided by folding over an end of a backing ( 4 0 ), AMEI~DED S~IEFr 21 87~9~
~0 95/30397 r~ , ( 14 providing a sorter folded edge (44). The Fig. 7 ~ -nic;-l fastening structure can be r~~ '1P~1 from ~eparate film6 or tapeD on the diaper line or cut from ~ prelaminate tape ~LLUU~ULæ~ as shown in FIG. 8, where 5 the ~Læ5:-ulo ~ sitive adhesive layers (46~ and (47 provide for at~ to the diaper, as shown in FIG . 7 . The backing substrate ( 4 0 ~, in thô Fig . 8 tape prelaminate, would conventionally be provided with a relOase or low a~lh~e;nn backsize coating(not shown~.
In the ~ ltS shown in FIG. 9, the backing layer (50~ of the Fig. 7 a~' '; - L is provided with an additional reinforcement tape (56), so as to provide additional reinfuL. ~ for att~ of the mechanical fastening element (20~. This design is 15 desirable where the backing (50) is a web having low tensilO strOngth, such as a lightly consolidated or point bonded nonwoven web, like a D~I J-bu~d or meltblown web .
FIG. lO illustrates an alternative method for 20 attaching the inward end portion (22~ of the mechanical fastening e-lement (20) to the diaper chassis (l~. In this instance, the inward end portion (22~ is sandwiched between the liquid-~ -rr^-hlp backsheet (3) and the liquid-permeable topsheet (2) where the 25 topsheet has a sufficiently open :~LuuLuLe such that the male mOchanical fastening structures (25~ can protrude outwardly therefrom sufficiently to engage fibers of a fibrous web on the mating mechanical fastening element (5) or the backsheet (3), as 30 described above. In this embodiment, preferably the male mechanical fastening structures (25) are somewhat larger and would conventionally extend at least about 150 microns from the backing (24). This ' ~ir provides for very secure attachment of the mechanical 35 fastening element (20) to the diaper chassis using the male mechanical fastening structures (25) at the inward end portion (22) to mechanically engage with the ~ro ss/303s7 ~ . l4 liguid p. ~~hle topsheet. Additional att~ Or the oprosln~ face (26) of the fastening tab (20) to the ba~~~Rh~-et (3) can be accomplished as de6cribed above using adhesive, welding or the like. This form of 5 at~ can be used with any of the above-described ts, in conjunction with the use of separate reinforcing tape, or a substrate attached to the outer - face of the ha~ Rh~et (3) and/or face (26) of the fastening tab (20).
Generally, the inward end portion (22) is shorter in the length direction than the outward end portion (21), allowing the outward end portion (21) to extend beyond the inward end portion (22) when folded towards the topsheet (2). This allows a certain portion of the -- -nicP~t fastening structures (25) to r~ :~n;c:~l ly engage with fibers of a topsheet (2) prior to use, keeping the outward end portion (21) folded. However, this is not as critical in the atta~: t method of FIG. 10 in that the mechanical fastening structures (25) on the outward end (21) can also engage with the fibers of the topsheet (2) in the area where topsheet (2) is attached to the inward end portion (22). The ~~h;-nic;~l fastening structures (25) can also be self-engaging .
During use, both the outward end, and inward end portions, (21) and (22), respectively, engage with a fibrous web of the mating mechanical fastening element (5) and/or a fibrous web, laminated or otherwise formed, on the liguid-impermeable backsheet (3), such that both the outward end portion (21) and the inward end portion (22) are fully engaqed, thus allowing secure non-rotational attachment between the corners
FIG. 2 is a sectional side view of the FIG. 1 3 5 ~mho~; ~ t .
21 ~78~
Woss/303s7 p~ ",_ ~4 FIG. 3 i6 a p~L~e- ~ive view of a ~icpocshle diaper with the ~ n; c9 1 f astener closure system 6hown in FIGS. 1 and 2.
FIG. 4 is a side view of a second . ~ -nt of 5 the invention.
FIG. 5 is a side cut-away view of a third i - L of the invention .
FIG . 6 is a side view of the FIG . 5 Pmhotl i - L
prior to application to the diaper.
FIG. 7 is a side cut-away view of a fourth ~mho~ of the invention.
FIG. 8 is a side view of the FIG. 7 Pmho~l; L
prior to application to a diaper.
FIG. 9 is a side cut-away view of a fifth 15 . ' ';- L of the invention.
FIG. 10 is a side cut-away view of a sixth L of the invention.
Dr~rATr r n DESCRIPTION OF THE lNV ~
The following detailed description of the invention is made with respect to certain pref erred embodiments of t~he invention closure system on a conventional ~licposlhle diaper chassis. However, it would be apparent to one skilled in the art that the preferred Prho~;r-nts of the invention mechanical fastener closure systems would be applicable to other articles, such as hospital gowns, caps, incontinent garments, other diaper designs and the like.
Referring to FIGS . 1-3, a f irst preferred embodiment of the invention mechanical closure system is disclosed with respect to a conventional diaper chassis absorbent body (1~. The diaper absuLlel.~ body (l) comprises a liguid-p~ --hle topsheet (2) and a liquid-; F~L -shle b~-kqh~et (3), between which is a conventional absorbent pad (not shown). At least a f irst corner ( 4 ) at a f irst end ( 8 ) of the diaper chassis (1) has a mechanical fastening tab (20) ~0 9SI3~397 2 ~ 8 7 ~ 9 4 ~ ? ~4 ~ ci~n-~ to adhere to a mating =? ~nicAl fastening element (5), and/or the h~cl~che~t (3), at a second end (g) of the diaper chassis (1). When the diaper is worn, i.e. when the invention ~ ` -nicAl fastening - 5 closure system is in use, the first corners (4) at the first end (8) of the disposable diaper overlap with COLL-~L~ n1 second opposing corners (7) at the opposing end (9) of the diaper chassis, so that the two Prsin~l corners (4) and (7) have mutually abutting faces. In the conventional diaper chassis design of FIG. 3, where both first corners (4) are placed over both CULLC~ V~1;ng second opposing corners (7) and the r~ ni~Al fastening elements (20) engage with the bA~ kch-~t (3) and/or the mating mechanical fastening element (5), the diaper chassis defines a waist opening (10) encircling the torso of the wearer.
The liquid p~L -hle topsheet (2) would comprise any conventional material known for this use, including spunbond webs, meltblown webs, carded webs, and the like, which conventionally are formed of thermoplastic and hydrophobic polymer f ibers, such as polyolef in or polyester f ibers .
The backsheet (3) is a liquid-impermeable web or film and conventionally is a thin polymer film, such as a thin polyolefin film, i.e., polyethylene or polypropylene, mixtures, blends or coextruded versions, generally less than 2 mils thick. Liquid~ ble, but vapor-permeable microporous f ilms may also be used to form the backsheet (3).
In a preferred embodiment, the h~A~ kche~t (3) comprises a laminate of a liquid-i --hle film with a nonwoven or woven, stitchbonded, knitted or the like, fibrous web, which fibrous web is engagable with the mechanical fastening structures (25) on the mechanical fastening tab (20). Suitably, this laminate can be formed by adhesive lamination, pattern welding, i.e., sonic or heat or cold welding, or direct formation of 21 ~7~4 Wo 9~30397 . ~ 74 the web on all or part of the liquid-; --hl A film. 1--The f ibrous web would f ace outward so as to be ~-n ~ 7~hl~ with the mechanical fastening tab.
Preferably, a fibrou6 web, provided as an outer 5 layer of a h~Arkch~t laminate ~3) or a mating mechanical element (5), will have sufficient fiber loft, fiber spacing, and fiber size to allow penetration by the mechanical fastening ~LLU~:~UL~S (25) of tab (20) but sufficient fiber density and size so 10 that a substantial portion of the r- `-n;cAl fastening ~LU~.~UL~S (25) engage fibers of the web.
Specifically, the hr~kch~et (3), or mating ~ -nirA~ fastening element (5), can be a laminate of liquid~ ~eL -hle film and a loop fabric, such as those described in U.S. Pat. No. 5,176,670, or any other conventional loop fabric. The loop fabric can be any conventional fibrous loop, including nu., ~,v-:..s, fabric, provided wit,h suitable backing(s) as required.
The fabrics are formed of conventional fibers in~ ;n~
20 nylon, polyester, polypropylene, or other like synthetic or natural fibers. A preferred loop fabric would be such as descri~ed in U.S. Pat. No. 5,2S6,231, where corrugated oriented f ibers are extrusion bonded to a thermoplastic backing, "SCOTCH-MATE" loop fabrics 25 (available from 3M Company), or ''MILLILûCK'' (a sti~hhon-lecl loop fabric available from M;11;kl~r~
Company) .
The fibrous web, including loop fabrics, may also be extrusion laminated to a liquid-i ~ -~hle barrier 30 layer on one face of the fibrous web, which can then be used as the backsheet or mating mechanical f astening element (S) or further laminated to a film, a scrim, or the like, for added strength.
In the f irst embodiment of the invention closure 3s system, shown in FIGS. 1 and 2, the mechanical ~astening tab (20) is provided with male mechanical fastening structures (25~, which can be any suitable 21 8789~
~o 9s/3o397 1 _-,. l4 fiber engaging shape. A general fiber en~in~ shape comprises an upstanding stem having a base stem portion (28) and a distal fiber engaging element t29~ at the outermost end of the stem (25). The base stem portion (28) is generally narrower than the fiber en~
element (29) over its full length and has no outward protrusions or fiber engaging structures. Generally the stem portion (28) has straight sides or taper5 inwardly from the fastening tab (20) face to the fiber lo engaging element (29). The fiber engaging element (29) can be in the shape of a -' . , circular disk, J-hook, bilobal (T-shaped), multilobal or any other suitable shape capable of engaging f ibers . The male r?ch:~nic~l fastening structure from stem base (28) to outermost surface of the fiber engaging element (29), generally is at least 75 microns high, preferably 200 to 400 microns high. Suitable materials for forming the hook include thermoplastic polymers, such as polyester, polyolefins, nylons, and the like.
The mechanical fastening tab (20) is provided with an outward end portion (21) extending beyond the edge (11) of the corner (4) and an inward end portion (22) extending into the diaper chassis (~) corner (4), which two end portions (21 and 22) are separated by a transition region (23). Both the inward end portion (22) and the outward end portion (21) are capable of engaging the fibrous mating mechanical fastening element(s) (5) and/or an outer fibrous web of a backsheet laminate (3). The outward end portion (21) provides a convenient grippable attachment for easy placement and removal of the male mechanical fastening tab 20. The inward end portion (22) when engaged with backsheet (3) or mating fastening elements (5) limits rotational shifting of the opposing corners (4) and (7), each with respect to the other, during normal wear and usage.
f ~f f ~ $; ~5 WO 95/30397 2 1 8 7 8 9 ~ r ~ 74 1--In the ~ ho~ L of Figs . 1 and 2, the ~n i C~ 1 fastening tab t20) is attached to the diaper chassis (1) at a face (26) opposite the face (27) containing the male -- -nirAl fastening structures (25). The 5 inward end portion (22) can be attached to the diaper chassis (1) by any method which does not substantially destroy or impair the f iber engaging function of the male mechanical fastening structures (25) on the inward end portion (22), which includes adhesive bonding, 10 intermittent or spot welding (sonic, heat or cold welding, or the like) or the like.
Fastening tab backing (24) is preferably an integral or separate thermoplastic film formed of the same thermoplastic polymer as a male r- '-n;l~Al 15 fastening structures (25), however backing (24) could be a f ibrous web structure where the male mechanical fastening structures are formed by knitting or a like operation. Other ba~kings and substrates can also be used including conventional thermoplastic films, 20 fibrous webs or the like.
FIG. 4 illustrates an alternative embodiment of the invention mechanical fastening closure system, where like numerals indicate like elements. In this Prl~o~ L, the mechanical fastening tab (20) is 25 attached to a backing substrate (32), which is provided with an extending fingerlift portion (33), free of mechanical fastening structures or adhesives. The fingerlift portion (33) allows the fastening tab/backing substrate laminate t30) to be gripped for 30 removal. Backing structure (32) can be any substrate provided it is flexible, and would conventionally be a thermoplastic film or fibrous web. The use of backing (32) allows mechanical fastening tab (20) to be applied via a continuous pressure-sensitive adhesive layer 35 (31). For example the mechanical fastening tab (20) can be cut from a continuous pressure-sensitive adhesive coated tape. The tape could be continuously .
~C 2 1 8`~ 8 9~
laminated to the backing ~32) and then cut into individual mechanical fas~ening tab laminates (30) and adhered to the diaper chassis ~1) without on-line adhesive coating or welding of the inward end portion 5 (22) to the diaper chassis (1).
FIG. 5 illustrates an alternative embodiment of the FIG. 4 structure wherein an additional reinforcing element (36) is provided so as to provide more secure attachment of the mechanical fastening tab (20) outward 10 end portion (21), to the diaper chassis (1). This reinforcing element (36) would generally be a PSA tape adhered to the diaper chassis at one end and the mechanical fastening element (20) outer end (21) at the other end, either directly or through the backing (32) 15 as shown in FIG. 5. The structure shown in FIG. 5 can be assembled from separate individual tapes or films on a diaper line or provided as a prelaminate tape structure, such as shown in FIG. 6. With the Fig. 6 prelaminate tape structure the reinforcing element (36) 20 and the backing (32) would be preferably provided with low adhesion backsize or release coatings (38) and (39) to allow the prelaminate structure to be unrolled from a continuous roll as a tape without blocking of the adhesive layers (37) and (31). The reinforcing element 25 (36) could be used with other embodiments of the inventions as well, such as the embodiment of Fig. 1.
The FIGS. 7 and a em'oodiment is a variation of the FIGS. 5 and 6 embodiments where the backing substrate (40) extends into the diaper chassis at an end (45), 30 providing the mechanical fastening element (20) with two points of permanent attachment to the diaper chassis, such as in the FIGS. 5 and 6 embodiment, without a separate reinforcing element (36) . An optional variation of this embodiment, as well as the embodiments AMENDED SHEET
_g_ .
7 . ~ a ;~
of FIGS. 4-6, and like structures, is that a finger lift portion (43) is provided by folding over an end of a backing ( 4 0 ), AMEI~DED S~IEFr 21 87~9~
~0 95/30397 r~ , ( 14 providing a sorter folded edge (44). The Fig. 7 ~ -nic;-l fastening structure can be r~~ '1P~1 from ~eparate film6 or tapeD on the diaper line or cut from ~ prelaminate tape ~LLUU~ULæ~ as shown in FIG. 8, where 5 the ~Læ5:-ulo ~ sitive adhesive layers (46~ and (47 provide for at~ to the diaper, as shown in FIG . 7 . The backing substrate ( 4 0 ~, in thô Fig . 8 tape prelaminate, would conventionally be provided with a relOase or low a~lh~e;nn backsize coating(not shown~.
In the ~ ltS shown in FIG. 9, the backing layer (50~ of the Fig. 7 a~' '; - L is provided with an additional reinforcement tape (56), so as to provide additional reinfuL. ~ for att~ of the mechanical fastening element (20~. This design is 15 desirable where the backing (50) is a web having low tensilO strOngth, such as a lightly consolidated or point bonded nonwoven web, like a D~I J-bu~d or meltblown web .
FIG. lO illustrates an alternative method for 20 attaching the inward end portion (22~ of the mechanical fastening e-lement (20) to the diaper chassis (l~. In this instance, the inward end portion (22~ is sandwiched between the liquid-~ -rr^-hlp backsheet (3) and the liquid-permeable topsheet (2) where the 25 topsheet has a sufficiently open :~LuuLuLe such that the male mOchanical fastening structures (25~ can protrude outwardly therefrom sufficiently to engage fibers of a fibrous web on the mating mechanical fastening element (5) or the backsheet (3), as 30 described above. In this embodiment, preferably the male mechanical fastening structures (25) are somewhat larger and would conventionally extend at least about 150 microns from the backing (24). This ' ~ir provides for very secure attachment of the mechanical 35 fastening element (20) to the diaper chassis using the male mechanical fastening structures (25) at the inward end portion (22) to mechanically engage with the ~ro ss/303s7 ~ . l4 liguid p. ~~hle topsheet. Additional att~ Or the oprosln~ face (26) of the fastening tab (20) to the ba~~~Rh~-et (3) can be accomplished as de6cribed above using adhesive, welding or the like. This form of 5 at~ can be used with any of the above-described ts, in conjunction with the use of separate reinforcing tape, or a substrate attached to the outer - face of the ha~ Rh~et (3) and/or face (26) of the fastening tab (20).
Generally, the inward end portion (22) is shorter in the length direction than the outward end portion (21), allowing the outward end portion (21) to extend beyond the inward end portion (22) when folded towards the topsheet (2). This allows a certain portion of the -- -nicP~t fastening structures (25) to r~ :~n;c:~l ly engage with fibers of a topsheet (2) prior to use, keeping the outward end portion (21) folded. However, this is not as critical in the atta~: t method of FIG. 10 in that the mechanical fastening structures (25) on the outward end (21) can also engage with the fibers of the topsheet (2) in the area where topsheet (2) is attached to the inward end portion (22). The ~~h;-nic;~l fastening structures (25) can also be self-engaging .
During use, both the outward end, and inward end portions, (21) and (22), respectively, engage with a fibrous web of the mating mechanical fastening element (5) and/or a fibrous web, laminated or otherwise formed, on the liguid-impermeable backsheet (3), such that both the outward end portion (21) and the inward end portion (22) are fully engaqed, thus allowing secure non-rotational attachment between the corners
(4) and (7). Both shear and peel resistance can be provided by suitable selection of the fibrous web fibers or structures (25) of the male mechanical fastening tab (20). Generally, the shear resistance provided by the inward fastening end portion (21) of 21 878~ `
w0 9s/30397 I ~ /4 the fastening tab (20) should be greater than 500 gr7ms, which can generally be provided by a -nic~l fastening tab having a width of greater than about 1. 5 cm, preferably 2 to 5 cm, and a length of the inward
w0 9s/30397 I ~ /4 the fastening tab (20) should be greater than 500 gr7ms, which can generally be provided by a -nic~l fastening tab having a width of greater than about 1. 5 cm, preferably 2 to 5 cm, and a length of the inward
5 end portion of from 1 to 3 cm. Generally, the outward portion (22) extends at least 1 cm beyond the side edge of the corner portion (4), preferably 3 to 6 cm.
Other ~ Ls of the invention will be ~ aLJI~L to tho5e skilled in the art from a 10 consideration of the specif ication or practice of the invention disclosed herein. It is intended that the specification and speci~ically described Pmho~ s be considered as exemplary only, with the true scope and spirit of the invention being indicated by the 15 following claims.
Other ~ Ls of the invention will be ~ aLJI~L to tho5e skilled in the art from a 10 consideration of the specif ication or practice of the invention disclosed herein. It is intended that the specification and speci~ically described Pmho~ s be considered as exemplary only, with the true scope and spirit of the invention being indicated by the 15 following claims.
Claims (9)
1. A closure system on a disposable absorbent article comprising a disposable absorbent article with at least two corner portions each of said corner portions having a liquid-permeable inner layer formed from a nonwoven fibrous web and a liquid-impermeable outer layer, and a mechanical fastening tab adjacent a first edge of a first of said two corner portions, the liquid-impermeable outer layer at a second opposing corner portion of said two corner portions having a first fibrous web on an outer surface of said liquid-impermeable outer layer engageable with said mechanical fastening tab, said mechanical fastening tab having a first face and a second face, at least said first face having male mechanical fastening structures engageable with said first fibrous web, a first inward end portion of said mechanical fastening tab located adjacent said liquid-permeable inner layer and engaged therewith, and an outward end portion of said mechanical fastening tab extending outward of said first edge wherein both said inward end portion and said outward end portion have said male mechanical fastening structures such that both end portions are engageable with said first fibrous web.
.
.
2. The closure system of claim 1 wherein said outward end portion is longer than said inward end portion, such that when said outward end portion is folded onto said inward end portion, a section of said outward end portion having said male mechanical fastening structures is engageable with said nonwoven fibrous web liquid-impermeable inner layer.
3. The closure system of any of claims 1 to 2 wherein said liquid-impermeable outer layer comprises a liquid impermeable thermoplastic film and said first fibrous web comprises a nonwoven fibrous web, a woven, stitchbonded or knitted fabric attached to said liquid-impermeable thermoplastic film at least in said second opposing corner.
4. The closure system of any of claims 1 to 3 wherein said inward end portion is adhesively or heat point bonded to said liquid-permeable inner layer at said second face of said mechanical fastening tab.
5. The closure system of any of claims 1 to 3 wherein said inward end portion mechanically engages said nonwoven fibrous web inner layer by said male mechanical fastening structures such that the male mechanical fastening structures project through said nonwoven fibrous web and are engageable with said first fibrous web.
6. The closure system of any of claims 1 to 5 wherein the mechanical fastening tab is provided with a continuous pressure-sensitive adhesive coating on both the inward end portion and the outward end portion on said second face of said mechanical fastening tab, and wherein said outward end portion is attached to a backing substrate and said inward end portion is attached to said first corner portion by said pressure-sensitive adhesive layer.
7. The closure system of any of claims 1 to 6 further comprising a reinforcing element attached at an inward end to said liquid-impermeable outer layer and at an outward end to said mechanical fastening tab outward end or the backing substrate.
8. A tape laminate structure comprising a backing substrate having a first face and a second face said first face having male mechanical fastening structures, said backing substrate further having a first inner end portion and an outward end portion separated by a fold line such that the inner end portion and the outer end portion are abutting at said first face, both said inner end portion and said outer end portion having male mechanical fastening structures, a second face of said backing substrate having a first pressure-sensitive adhesive layer, a second flexible substrate in the form of a tab having a first face and a second face and length, width and thickness dimensions, said second tab substrate first face attached to said backing substrate substantially only at said outward end portion by said first pressure-sensitive adhesive layer said second tab substrate having a extension portion extending outward at said fold line said extension portion first face having a second pressure-sensitive adhesive layer.
9. The tape laminate of claim 8 wherein said second substrate comprises a laminate of a third tab substrate and a reinforcing tape tab, said third substrate having a first face and a second face, said third substrate first face attached to said backing substrate outward end portion and a portion of said third substrate and said reinforcing tape tab comprising said extension portion, a third pressure-sensitive adhesive layer on said reinforcing tape tab adhered to said third substrate second face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/239,042 US5554146A (en) | 1994-05-06 | 1994-05-06 | Mechanical fastener for disposable article |
| US08/239,042 | 1994-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2187894A1 true CA2187894A1 (en) | 1995-11-16 |
Family
ID=22900361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002187894A Abandoned CA2187894A1 (en) | 1994-05-06 | 1995-03-23 | Mechanical fastener for disposable article |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US5554146A (en) |
| EP (1) | EP0758877B1 (en) |
| KR (1) | KR100328893B1 (en) |
| CN (1) | CN1147200A (en) |
| AU (1) | AU678714B2 (en) |
| BR (1) | BR9507709A (en) |
| CA (1) | CA2187894A1 (en) |
| DE (1) | DE69518638T2 (en) |
| IL (1) | IL113277A (en) |
| MX (1) | MX9605182A (en) |
| WO (1) | WO1995030397A1 (en) |
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| US3561446A (en) * | 1969-10-20 | 1971-02-09 | Jones Sr John L | Pleated diaper |
| CA962820A (en) * | 1972-06-26 | 1975-02-18 | Domtar Limited | Easily dismantled partition structure |
| US4033348A (en) * | 1975-09-16 | 1977-07-05 | Johnson & Johnson | Disposable diaper having a tab fastener with a bifurcated fixed end |
| US4010753A (en) * | 1976-02-19 | 1977-03-08 | Johnson & Johnson | Disposable diaper having adhesive tab fasteners with built-in release system |
| US4178933A (en) * | 1977-03-23 | 1979-12-18 | Avery International Corporation | Extractive transfer diaper tab means |
| US4699622A (en) * | 1986-03-21 | 1987-10-13 | The Procter & Gamble Company | Disposable diaper having an improved side closure |
| US5019065A (en) * | 1987-12-17 | 1991-05-28 | The Procter & Gamble Company | Disposable absorbent article with combination mechanical and adhesive tape fastener system |
| EP0321234B2 (en) * | 1987-12-17 | 2000-06-14 | The Procter & Gamble Company | Mechanical fastening systems with disposal means for disposable absorbent articles |
| US4894060A (en) * | 1988-01-11 | 1990-01-16 | Minnesota Mining And Manufacturing Company | Disposable diaper with improved hook fastener portion |
| US5256231A (en) * | 1988-05-13 | 1993-10-26 | Minnesota Mining And Manufacturing Company | Method for making a sheet of loop material |
| US5176670A (en) * | 1988-12-20 | 1993-01-05 | Kimberly-Clark Corporation | Disposable diaper with improved mechanical fastening system |
| US5019072A (en) * | 1990-02-27 | 1991-05-28 | Minnesota Mining And Manufacturing Company | Disposable diaper that is fastened by contact between overlapping adhesive patches |
| US5066289A (en) * | 1990-04-09 | 1991-11-19 | Minnesota Mining And Manufacturing Company | Release treated non-woven fastening tape protector |
| US5401275A (en) * | 1991-09-11 | 1995-03-28 | Diaperaps Limited | Apparatus for enforcing the closure of diapering garments |
| US5200245A (en) * | 1991-10-25 | 1993-04-06 | Brodrick Jr Louis T | Fastener |
-
1994
- 1994-05-06 US US08/239,042 patent/US5554146A/en not_active Expired - Lifetime
-
1995
- 1995-03-23 DE DE69518638T patent/DE69518638T2/en not_active Expired - Fee Related
- 1995-03-23 MX MX9605182A patent/MX9605182A/en unknown
- 1995-03-23 WO PCT/US1995/003674 patent/WO1995030397A1/en active IP Right Grant
- 1995-03-23 EP EP95914172A patent/EP0758877B1/en not_active Expired - Lifetime
- 1995-03-23 CN CN95192922A patent/CN1147200A/en active Pending
- 1995-03-23 BR BR9507709A patent/BR9507709A/en not_active IP Right Cessation
- 1995-03-23 CA CA002187894A patent/CA2187894A1/en not_active Abandoned
- 1995-03-23 AU AU21275/95A patent/AU678714B2/en not_active Ceased
- 1995-03-23 KR KR1019960706276A patent/KR100328893B1/en not_active IP Right Cessation
- 1995-04-06 IL IL11327795A patent/IL113277A/en not_active IP Right Cessation
- 1995-06-05 US US08/464,017 patent/US5537722A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR970702714A (en) | 1997-06-10 |
| US5537722A (en) | 1996-07-23 |
| EP0758877B1 (en) | 2000-08-30 |
| IL113277A (en) | 1999-01-26 |
| AU2127595A (en) | 1995-11-29 |
| MX9605182A (en) | 1997-09-30 |
| AU678714B2 (en) | 1997-06-05 |
| EP0758877A1 (en) | 1997-02-26 |
| JPH10500326A (en) | 1998-01-13 |
| BR9507709A (en) | 1999-06-29 |
| WO1995030397A1 (en) | 1995-11-16 |
| DE69518638D1 (en) | 2000-10-05 |
| US5554146A (en) | 1996-09-10 |
| CN1147200A (en) | 1997-04-09 |
| JP3553961B2 (en) | 2004-08-11 |
| DE69518638T2 (en) | 2001-01-11 |
| KR100328893B1 (en) | 2002-11-13 |
| IL113277A0 (en) | 1995-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |