US4035217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing absorbent facing materials
Assignee: Johnson and Johnson
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Filing: 1975-06-05
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Granted: 1977-07-12
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Expires: 1995-06-05
Abstract
Abstract An absorbent facing material comprising 10 to 30% cellulosic, staple length, textile fibers, 60 to 80% of fluff wood pulp, and 5 to 25% of a resin binder material. The cellulosic fibers are substantially only on one surface of the material and the wood pulp substantially only on the opposite surface. The binder is distributed in a predetermined pattern with the surface containing the cellulosic fibers having a higher concentration of binder than the surface containing the wood pulp fibers.
Inventors
- 👤 John Wilson Kennette
- 👤 Irving Stanley Ness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:25
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/10; A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15617; A61F13/15642; A61F13/15658; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/58; D04H1/64; D04H1/66; B32B2262/00; B32B2262/06; B32B2262/062; B32B2555/00; B32B2555/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/24231; Y10T428/2424; Y10T428/24248; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/60; Y10T442/695
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
The method of producing an absorbent nonwoven facing material weighing at least one ounce per square yard comprising: (a) forming a web of cellulosic, staple length textile fibers, said fibers having a length of at least 1/2 inch and said textile fibers comprising 10% to 30% by weight of the facing material; (b) uniformly depositing ground wood pulp on one side of the textile fiber web to form an entirely absorbent fiber-pulp laminate, said wood pulp comprising 60% to 80% by weight of the facing material; (c) confining both surfaces of the fiber-pulp laminate; (d) wetting the entire laminate with water while it is confined to saturate the laminate and produce integrity therein; (e) depositing a resin binder in an intermittent pattern to the surface of the laminate containing the staple length textile fibers, said binder comprising 5% to 25% by weight of the facing materials; and (f) drying the laminate with the binder thereon to remove the water and produce a highly absorbent stabilized facing material which is free of hydrogen bonding.
Claim 2
Independent Claim
173 words
The method of producing an absorbent nonwoven facing material weighing at least one ounce per square yard comprising: (a) forming a web of cellulosic, staple length textile fibers, said fibers having a length of at least 1/2 inch and said textile fibers comprising 10% to 30% by weight of the facing material; (b) uniformly depositing ground wood pulp on one side of the textile fiber web to form an entirely absorbent fiber-pulp laminate, said wood pulp comprising 60% to 80% by weight of the facing material; (c) confining both surfaces of the fiber-pulp laminate; (d) wetting the entire laminate with water while it is confined to saturate the laminate and produce integrity therein; (e) depositing a resin binder in an intermittent pattern to the surface of the laminate containing the staple length textile fibers, said binder comprising 5% to 25% by weight of the facing materials; and (f) drying the laminate with the binder thereon to remove the water and produce a highly absorbent stabilized facing material which is free of hydrogen bonding.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |