US5019071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive fastening tab
Assignee: 3M Co
•
Filing: 1989-12-12
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Granted: 1991-05-28
•
Expires: 2009-12-12
Abstract
Abstract A diaper, adhesive fastening tab which exhibits good peel, quick-stick, shear strength and aging when used with a diaper outer film, either with or without a low adhesion backside. The adhesive used with the fastening tab is based on a composition comprising a slightly aromatic containing aliphatic oil, a styrene/isoprene block copolymer and a solid C5 tackifying resin.
Inventors
- 👤 Stephen W. Bany
- 👤 John A. Miller
- 👤 Brad W. Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:07
CPC Classifications
C; C09; C09J; C09J153/00; C09J109/00; C09J109/06; A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/387; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
144 words
A diaper fastening tab comprising a substrate and an adhesive layer, the adhesive composition of said adhesive layer comprising; (a) 33 to 50 weight percent of an elastomer component comprised of a block copolymer of A blocks derived from styrene and B blocks derived from isoprene, (b) a solid tackifying resin comprised predominantly of C 5 hydrocarbons, and (c) an aliphatic oil having from about 5 to 45 percent aromatic hydrocarbon content, wherein the ratio of aliphatic oil to solid tackifying resin is from about 0.01 to 0.45 and wherein said block copolymer, tackifying resin and aliphatic oil composition ratios are defined by the cartesian space enclosed by those compositions having CMTg values of 254 to 265 Kelvin at 33 percent by weight elastomer content and CMTg values of 245 to 261Kelvin at 50 weight percent elastomer, defined by points A-F in FIG. 2.
Claim 2
Dependent Claim
144 words
A diaper fastening tab comprising a substrate and an adhesive layer, the adhesive composition of said adhesive layer comprising; (a) 33 to 50 weight percent of an elastomer component comprised of a block copolymer of A blocks derived from styrene and B blocks derived from isoprene, (b) a solid tackifying resin comprised predominantly of C 5 hydrocarbons, and (c) an aliphatic oil having from about 5 to 45 percent aromatic hydrocarbon content, wherein the ratio of aliphatic oil to solid tackifying resin is from about 0.01 to 0.45 and wherein said block copolymer, tackifying resin and aliphatic oil composition ratios are defined by the cartesian space enclosed by those compositions having CMTg values of 254 to 265 Kelvin at 33 percent by weight elastomer content and CMTg values of 245 to 261Kelvin at 50 weight percent elastomer, defined by points A-F in FIG. 2.
Claim 3
Dependent Claim
20 words
The diaper fastening tab of claim 1 wherein said A blocks comprise 10 to 30 weight percent of said copolymer.
Claim 4
Dependent Claim
24 words
The diaper fastening tab of claim 1 wherein said tackifying resin is a polymerized structure derived predominantly from piperylene and either 2-methyl-2-butene or isoprene.
Claim 5
Dependent Claim
24 words
The diaper fastening tab of claim 1 wherein said solid C 5 resin has a softening point of from 80 to 115 degrees Centigrade.
Claim 6
Dependent Claim
15 words
The diaper fastening tab of claim 1 comprising at least 38 percent of said elastomer.
Claim 7
Dependent Claim
53 words
The diaper fastening tab of claim 1 wherein said CMTg values range from about 254 to 260 Kelvin at 33% elastomer and from about 245 to 251 Kelvin at 50% elastomer for adhering said tab to a diaper film with a LAB defined by points B, C, E and F in FIG. 2.
Claim 8
Dependent Claim
53 words
The diaper fastening tab of claim 1 wherein said CMTg values range from about 260 to 265 Kelvin at 33% elastomer and from about 251 to 261 Kelvin at 50% elastomer for adhering said tab to a diaper film without a LAB defined by points A, B, D and E in FIG. 2.
Claim 9
Dependent Claim
29 words
The diaper fastening tab of claim 6 wherein said CMTg values and said percent elastomer of said adhesive composition correspond to those defined by area III in FIG. 1.
Claim 10
Dependent Claim
29 words
The diaper fastening tab of claim 7 wherein said CMTg values and said percent elastomer of said adhesive composition correspond to those defined by area IV in FIG. 1.
Claim 11
Dependent Claim
24 words
A diaper comprising the diaper fastening tab of claim 1 further comprising a diaper with an outer film to which the fastening tab attaches.
Claim 12
Dependent Claim
13 words
The diaper of claim 10 wherein the outer film is an outer sheet.
Claim 13
Dependent Claim
11 words
The diaper of claim 11 wherein the outer sheet is polyethylene
Claim 14
Dependent Claim
18 words
The diaper of claim 10 wherein the outer film is a reinforcing film attached to an outer sheet.
Claim 15
Dependent Claim
25 words
A diaper comprising the diaper fastening tab of claim 8 further comprising a diaper with an outer LAB film to which the fastening tab attaches.
Claim 16
Dependent Claim
18 words
The diaper of claim 14 wherein the outer film is a reinforcing film attached to an outer sheet.
Claim 17
Dependent Claim
25 words
A diaper comprising the diaper fastening tab of claim 9 further comprising a diaper with an outer non-LAB film to which the fastening tab attaches.
Claim 18
Dependent Claim
14 words
The diaper of claim 16 wherein the outer film is an outer polyethylene sheet.
Claim 19
Dependent Claim
134 words
An adhesive composition comprising; (a) 33 to 50 weight percent of an elastomer component comprised of a block copolymer of A blocks derived from styrene and B blocks derived from isoprene, (b) a solid tackifying resin comprised predominantly of C 5 hydrocarbons, and (c) an aliphatic oil having from about 5 to 45 percent aromatic hydrocarbon content, wherein the ratio of aliphatic oil to solid tackifying resin is from about 0.01 to 0.45 and wherein said block copolymer, tackifying resin and aliphatic oil composition ratios are defined by the cartesian space enclosed by those compositions having CMTg values of 254 to 260 Kelvin at 33 percent by weight elastomer content and CMTg values of 245 to 251 Kelvin at 50 weight percent elastomer, defined by points B, C, E and F in FIG. 2.
Claim 20
Dependent Claim
134 words
An adhesive composition comprising; (a) 33 to 50 weight percent of an elastomer component comprised of a block copolymer of A blocks derived from styrene and B blocks derived from isoprene, (b) a solid tackifying resin comprised predominantly of C 5 hydrocarbons, and (c) an aliphatic oil having from about 5 to 45 percent aromatic hydrocarbon content, wherein the ratio of aliphatic oil to solid tackifying resin is from about 0.01 to 0.45 and wherein said block copolymer, tackifying resin and aliphatic oil composition ratios are defined by the cartesian space enclosed by those compositions having CMTg values of 254 to 260 Kelvin at 33 percent by weight elastomer content and CMTg values of 245 to 251 Kelvin at 50 weight percent elastomer, defined by points B, C, E and F in FIG. 2.
Claim 21
Dependent Claim
21 words
The adhesive composition of claim 18 wherein said block copolymer A blocks comprise 10 to 30 weight percent of said copolymer.
Claim 22
Dependent Claim
23 words
The adhesive composition of claim 18 wherein said tackifying resin is a polymerized structure derived predominantly from piperylene and either 2-methyl-2-butene or isoprene.
Claim 23
Dependent Claim
23 words
The adhesive composition of claim 18 wherein said solid C 5 resin has a softening point of from 80 to 115 degrees Centigrade.
Claim 24
Dependent Claim
28 words
The adhesive composition of claim 18 wherein said CMTg values and said percent elastomer of said adhesive composition correspond to those defined by area III in FIG. 1.
References Cited (Backward Citations)
US3239478A
Cited
GB1193626A
Cited
US3862068A
Cited
US3635861A
Cited
US3954692A
Cited
US3787531A
Cited
US3676202A
Cited
US3932328A
Cited
GB1438776A
Cited
US3797495A
Cited
US3935338A
Cited
US4028292A
Cited
US3956223A
Cited
US4060503A
Cited
US4097434A
Cited
US4080348A
Cited
US4136071A
Cited
US4096203A
Cited
US4163077A
Cited
UST100203I4
Cited
US4250272A
Cited
US4288567A
Cited
US4540415A
Cited
US4411954A
Cited
US4460364A
Cited
US4514554A
Cited
US4556464A
Cited
US4650829A
Cited
US4813947A
Cited
US4683268A
Cited
US4810574A
Cited
US4861635A
Cited
US4917929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |