US4041949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible waistband diaper
Assignee: Glad Products Co
•
Filing: 1976-07-02
•
Granted: 1977-08-16
•
Expires: 1996-07-02
Abstract
Abstract A disposable diaper having a stretchable waistband having a topsheet provided with means for passing liquid therethrough, a water impermeable backsheet and an absorbent pad disposed therebetween, one of said topsheet or backsheet being fabricated from a water impermeable stretchable plastic film having end portions extending beyond said absorbent pad, each end portion being folded upon itself and adhered to itself to form a stretchable waistband for the diaper.
Inventors
- 👤 Theodore Frederick Kozak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:00
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49007
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
172 words
A disposable diaper having a stretchable waistband comprising in combination a topsheet for placement adjacent to the body and being provided with means for passing liquid therethrough, a water impermeable backsheet and an absorbent pad disposed between said topsheet and backsheet, one of said topsheet or backsheet being fabricated from a water impermeable stretchable plastic film having a Young's Modulus of less than 5000 lbs/in 2 and which exhibits recovery characteristics such that at up to 20% elongation it will recover about 99% and from 20 to 50% elongation it will recover from 99 to 90%, respectively, and still maintain a force of 0.05 lbs, means for providing an expansible waist portion for the diaper comprising said stretchable plastic film having end portions extending beyond the longitudinal end of said absorbent pad, each end portion being folded upon itself and adhered to itself to form a stretchable waistband for the diaper, and a pair of laterally and oppositely extending fastening means disposed on said waistband for securing said diaper on an infant.
Claim 2
Dependent Claim
172 words
A disposable diaper having a stretchable waistband comprising in combination a topsheet for placement adjacent to the body and being provided with means for passing liquid therethrough, a water impermeable backsheet and an absorbent pad disposed between said topsheet and backsheet, one of said topsheet or backsheet being fabricated from a water impermeable stretchable plastic film having a Young's Modulus of less than 5000 lbs/in 2 and which exhibits recovery characteristics such that at up to 20% elongation it will recover about 99% and from 20 to 50% elongation it will recover from 99 to 90%, respectively, and still maintain a force of 0.05 lbs, means for providing an expansible waist portion for the diaper comprising said stretchable plastic film having end portions extending beyond the longitudinal end of said absorbent pad, each end portion being folded upon itself and adhered to itself to form a stretchable waistband for the diaper, and a pair of laterally and oppositely extending fastening means disposed on said waistband for securing said diaper on an infant.
Claim 3
Dependent Claim
48 words
A disposable diaper according to claim 1 wherein said fastening means are pressure sensitive tape fasteners each having a fixed end and a releasable end and wherein said fixed end is secured to a corner of said waistband of the diaper on one of the folded end portions.
Claim 4
Dependent Claim
27 words
A disposable diaper according to claim 2 wherein said topsheet is fabricated from said plastic film material and wherein said backsheet is fabricated from said non-stretchable material.
Claim 5
Dependent Claim
14 words
A disposable diaper according to claim 3 wherein said backsheet is a polyethylene film.
Claim 6
Dependent Claim
36 words
A disposable diaper according to claim 4 wherein said means for passing liquid through said topsheet are valvular openings and wherein said topsheet also includes a system of dimples extending across the surface of said topsheet.
Claim 7
Dependent Claim
23 words
A disposable diaper according to claim 1 wherein said plastic film has a Young's Modulus of from 300 to 4000 lbs/in 2 .
Claim 8
Dependent Claim
23 words
A disposable diaper according to claim 1 wherein said plastic film has a Young's Modulus of from 350 to 1000 lbs/in 2 .
Claim 9
Dependent Claim
16 words
A disposable diaper according to claim 7 wherein said plastic film is an ethylene-ethyl acrylate film.
Claim 10
Dependent Claim
22 words
A disposable diaper according to claim 3 wherein each end portion of said topsheet has a plurality of folds defining said waistband.
Claim 11
Dependent Claim
35 words
A disposable diaper according to claim 3 wherein said backsheet terminates immediately after said absorbent pad in the diaper length direction and wherein said topsheet is adhered to said backsheet immediately adjacent said absorbent pad.
Claim 12
Dependent Claim
27 words
A disposable diaper according to claim 2 herein said backsheet is fabricated from said plastic film material and wherein said topsheet is fabricated from said non-stretchable material.
Claim 13
Dependent Claim
14 words
A disposable diaper according to claim 11 wherein said topsheet is a polyethylene film.
Claim 14
Dependent Claim
15 words
A disposable diaper according to claim 11 wherein said topsheet is fabricated from non-woven cloth.
Claim 15
Dependent Claim
23 words
A disposable diaper according to claim 11 wherein said plastic film has a Young's Modulus of from 300 to 4000 lbs/in 2 .
Claim 16
Dependent Claim
23 words
A disposable diaper according to claim 11 wherein said plastic film has a Young's Modulus of from 350 to 1000 lbs/in 2 .
Claim 17
Dependent Claim
16 words
A disposable diaper according to claim 11 wherein said plastic film is an ethylene-ethyl acrylate film.
Claim 18
Dependent Claim
22 words
A disposable diaper according to claim 11 wherein each end portion of said backsheet has a plurality of folds defining said waistband.
Claim 19
Dependent Claim
35 words
A disposable diaper according to claim 11 wherein said topsheet terminates immediately after said absorbent pad in the diaper length direction and wherein said backsheet is adhered to said topsheet immediately adjacent said adsorbent pad.
References Cited (Backward Citations)
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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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |