US4210144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diaper having refastenable tape system
Assignee: Procter and Gamble Co
•
Filing: 1978-09-18
•
Granted: 1980-07-01
•
Expires: 1998-09-18
Abstract
Abstract An improved disposable diaper of the type having a relatively high elongation to tensile force property, an absorbent pad, and tape-tab fasteners coated with a peelable adhesive. The backsheet is reinforced by coating the mother's bond region thereof with a material having high tensile strength and a low elongation to tensile force property relative to the backsheet material. The coating may be continuous or patterned and may be disposed on either the outwardly facing surface or the inwardly facing surface of the mother's bond region of the backsheet. When applied to the inwardly facing surface, the coating material may be adhesive material and may secure the backsheet to the pad assembly of the diaper. The reinforcement of the backsheet improves the resistance of the backsheet to stretching and tearing when subjected to tensile forces during fastening and wearing, and to peeling forces when the tape-tab fasteners are being peeled open. Thus, the fasteners are refastenable.
Inventors
- 👤 Henry D. Sarge, III
- 👤 Alan R. Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
114 words
In an improved disposable diaper of the type having an absorbent pad assembly secured to a substantially moisture impervious backsheet of relatively thin material having a relatively high elongation to tensile force property, and having peelable adhesive coated tape-tab fasteners wherein at least one of said tape-tab fasteners has a nonadhesive coated distal end portion to provide a mother's grasping portion for facilitating removal of said diaper from a user, the improvement comprising a coating disposed on an inwardly facing surface of a mother's bond region of said backsheet, said coating comprising a self-adhering coating material having a relatively high tensile strength and a low elongation to tensile force property relative to said backsheet.
Claim 2
Dependent Claim
114 words
In an improved disposable diaper of the type having an absorbent pad assembly secured to a substantially moisture impervious backsheet of relatively thin material having a relatively high elongation to tensile force property, and having peelable adhesive coated tape-tab fasteners wherein at least one of said tape-tab fasteners has a nonadhesive coated distal end portion to provide a mother's grasping portion for facilitating removal of said diaper from a user, the improvement comprising a coating disposed on an inwardly facing surface of a mother's bond region of said backsheet, said coating comprising a self-adhering coating material having a relatively high tensile strength and a low elongation to tensile force property relative to said backsheet.
Claim 3
Dependent Claim
38 words
The improved disposable diaper of claim 1 wherein said coating material is disposed discontinuously on said mother's bond region, said coating material covering a composite area that is substantially less than the area of said mother's bond region.
Claim 4
Dependent Claim
18 words
The improved disposable diaper of claim 2 wherein said discontinuous coating material is applied in a predetermined pattern.
Claim 5
Dependent Claim
19 words
The improved disposable diaper of claim 3 wherein said pattern comprises a plurality of beads of said coating material.
Claim 6
Dependent Claim
25 words
The improved disposable diaper of claim 4 wherein said plurality of beads are disposed generally in parallel relation and extend transverse said mother's bond region.
Claim 7
Dependent Claim
48 words
The improved disposable diaper of claim 5 wherein said beads are sufficiently closely spaced relative to the width of said tape-tab fasteners that the width of each said tape-tab fastener will span side-by-side segments of at least two said beads and an intervening unsupported strip of said backsheet.
Claim 8
Dependent Claim
68 words
The improved disposable diaper of claim 6 wherein said beads are preferably from about three-quarters of one millimeter (0.75 mm) to about one-and-one-half-millimeters (1.5 mm) wide and are nominally spaced about ten millimeters (10 mm) center-to-center, said tape-tab fasteners have nominal widths of from about twenty millimeters (20 mm) to about thirty millimeters (30 mm), and said mother's bond region is nominally about sixty-five millimeters (65 mm) wide.
Claim 9
Dependent Claim
84 words
In an improved disposable diaper of the type having an absorbent pad assembly secured to a substantially moisture impervious backsheet of relatively thin material having a relatively high elongation to tensile force property, and having peelable adhesive coated tape-tab fasteners, the improvement comprising a coating disposed on an inwardly facing surface of a mother's bond region of said backsheet, said coating comprising a self-adhering coating material having a relatively high tensile strength and a low elongation to tensile force property relative to said backsheet.
Claim 10
Dependent Claim
84 words
In an improved disposable diaper of the type having an absorbent pad assembly secured to a substantially moisture impervious backsheet of relatively thin material having a relatively high elongation to tensile force property, and having peelable adhesive coated tape-tab fasteners, the improvement comprising a coating disposed on an inwardly facing surface of a mother's bond region of said backsheet, said coating comprising a self-adhering coating material having a relatively high tensile strength and a low elongation to tensile force property relative to said backsheet.
Claim 11
Dependent Claim
38 words
The improved disposable diaper of claim 8 wherein said coating material is disposed discontinuously on said mother's bond region, said coating material covering a composite area that is substantially less than the area of said mother's bond region.
Claim 12
Dependent Claim
18 words
The improved disposable diaper of claim 9 wherein said discontinuous coating material is applied in a predetermined pattern.
Claim 13
Dependent Claim
19 words
The improved disposable diaper of claim 10 wherein said pattern comprises a plurality of beads of said coating material.
Claim 14
Dependent Claim
25 words
The improved disposable diaper of claim 11 wherein said plurality of beads are disposed generally in parallel relation and extend transverse said mother's bond region.
Claim 15
Dependent Claim
48 words
The improved disposable diaper of claim 12 wherein said beads are sufficiently closely spaced relative to the width of said tape-tab fasteners that the width of each said tape-tab fastener will span side-by-side segments of at least two said beads and an intervening unsupported strip of said backsheet.
Claim 16
Dependent Claim
68 words
The improved disposable diaper of claim 13 wherein said beads are preferably from about three-quarters of one millimeter (0.75 mm) to about one-and-one-half-millimeters (1.5 mm) wide and are nominally spaced about ten millimeters (10 mm) center-to-center, said tape-tab fasteners have nominal widths of from about twenty millimeters (20 mm) to about thirty millimeters (30 mm), and said mother's bond region is nominally about sixty-five millimeters (65 mm) wide.
Claim 17
Dependent Claim
49 words
The improved disposable diaper as recited in claims 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, or 14 wherein said coating material is an adhesive material and secures said mother's bond region of said backsheet to a juxtaposed surface area of said absorbent pad assembly.
Claim 18
Dependent Claim
30 words
The improved disposable diaper of claim 15 wherein said composite area of said adhesive material is greater than about five percent (5%) of the area of said mother's bond region.
Claim 19
Dependent Claim
33 words
The improved disposable diaper of claim 15 wherein said composite area of said adhesive material is from about five (5) to about twenty-five (25) percent of the area of said mother's bond region.
Claim 20
Dependent Claim
30 words
The improved disposable diaper of claim 15 wherein said composite area of said adhesive material is from about ten (10) to about fifteen (15) percent of said mother's bond region.
Claim 21
Dependent Claim
58 words
The improved disposable diaper of claim 15 wherein a substantial portion of said juxtaposed surface area of said pad assembly is an outwardly facing surface area of a flexible sheet member of said pad assembly, said flexible sheet member comprising material having an elongation to tensile force property which is generally comparable to that property of said backsheet.
References Cited (Backward Citations)
US3561446A
Cited
US3636952A
Cited
US3783871A
Cited
US3867940A
Cited
US3952745A
Cited
US4055182A
Cited
US4058125A
Cited
US4067337A
Cited
US4055183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |