US4177812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape structure and garment closure made therewith
Assignee: 3M Co
•
Filing: 1973-08-20
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Granted: 1979-12-11
•
Expires: 1993-08-20
Abstract
Abstract Pressure-sensitive adhesive tape closures for diapers or other garments are formed from backing strips which are divided into three portions of roughly equal area. One end portion and one of the other portions are surfaced with pressure-sensitive adhesive, while the remaining portion is surfaced with a release material; the latter two portions are folded together. In use, the first end portion is adhered to one garment border, a second border juxtaposed or overlapped, the folded portion of the closure then unfolded, and the thus-exposed adhesive surface adhered to the second border. These closures may be formed by cutting parallel strips across an elongate sheet of appropriately configured convolutely wound adhesive-coated sheet material.
Inventors
- 👤 Robert C. Brown
- 👤 Lyle H. Mickschl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:46
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58; C; C09; C09J; C09J7/00; C09J7/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
In a disposable diaper having a top sheet, a backing sheet and an absorbent core interposed therebetween, a means for providing self-stored protective access to a portion of the adhesive surface of a diaper tape fastener comprising, a pressure-sensitive tape fastener having an upper surface and a lower surface, said lower surface being divided widthwise into two end segments at least one of which is adhesively treated and a middle segment containing a release agent, one of said segments being a fixed end segment which is secured to said backsheet, the other of said end segments being a releasable end segment; said fastener being folded in manner such that said releasable end segment and said middle segment are superimposed over said fixed end segment with the lower surface of said releasable end segment being in contacting relation and releasably secured to the lower surface of said middle segment.
Claim 2
Dependent Claim
148 words
In a disposable diaper having a top sheet, a backing sheet and an absorbent core interposed therebetween, a means for providing self-stored protective access to a portion of the adhesive surface of a diaper tape fastener comprising, a pressure-sensitive tape fastener having an upper surface and a lower surface, said lower surface being divided widthwise into two end segments at least one of which is adhesively treated and a middle segment containing a release agent, one of said segments being a fixed end segment which is secured to said backsheet, the other of said end segments being a releasable end segment; said fastener being folded in manner such that said releasable end segment and said middle segment are superimposed over said fixed end segment with the lower surface of said releasable end segment being in contacting relation and releasably secured to the lower surface of said middle segment.
Claim 3
Dependent Claim
33 words
A disposable diaper as claimed in claim 1 wherein the contacting lower surfaces of the middle segment and the releasable end segment are bonded together with a small spot of hot melt adhesive.
Claim 4
Dependent Claim
29 words
A disposable diaper as claimed in claim 1 wherein said fixed end segment is secured to said backing sheet by adhering said fixed end segment to said backing sheet.
Claim 5
Dependent Claim
18 words
A disposable diaper as claimed in claim 1 wherein said release agent on said middle segment is silicone.
Claim 6
Dependent Claim
32 words
A disposable diaper as claimed in claim 1 wherein said releasable end segment has an end portion on the lower surface of said pressure-sensitive tape fastener which is not treated with adhesive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |