US5080951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven fabric
Assignee: Individual
•
Filing: 1989-08-03
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Granted: 1992-01-14
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Expires: 2009-08-03
Abstract
Abstract An improved, nonwoven fabric is constructed to have superior cloth-like characteristics including superior tear resistance, liquid absorbency, resistance to linting, resistance to separation of the fabric areas, flexibility, and softness. Said nonwoven fabric is comprised of at least one intermediate area of absorbent fibers sandwiched between a first outer area of reinforcing fibers and a second outer area containing of melt fibers. The areas of the nonwoven fabric of the present invention are bonded together first by needling and then by a heat treatment that melts at least some of the melt fibers.
Inventors
- 👤 David W. Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:38
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/08; B32B5/022; B32B5/22; B32B5/24; B32B5/26; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D04H1/485; D04H1/498; D04H1/54; D04H1/559; D04H1/70; D04H1/72; D04H1/732; D04H11/00; D04H11/08; D04H3/00; D04H3/08; D04H3/14; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/04; B32B2262/06; B32B2262/062; B32B2262/10; B32B2262/101; B32B2323/00; B32B2323/04; B32B2323/10; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T442/00; Y10T442/60; Y10T442/697; Y10T442/698
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A nonwoven absorbent fabric comprising a top fiber area having melt fibers; a bottom reinforcing area having high tensile strength reinforcing fibers; an intermediate area having absorbent fibers and melt fibers sandwiched between said top fiber area and said bottom reinforcing area; said top fiber area, bottom reinforcing area and intermediate area interconnected by an entanglement of said melt fibers, said reinforcing fibers and said absorbent fibers; and said top fiber area, bottom reinforcing area and intermediate area stabilized by melt fiber welds between adjacent said melt fibers, between said melt fibers and said absorbent fibers, between said melt fibers and said reinforcing fibers and between fibers which protrude through said bottom reinforcing area.
Claim 2
Dependent Claim
114 words
A nonwoven absorbent fabric comprising a top fiber area having melt fibers; a bottom reinforcing area having high tensile strength reinforcing fibers; an intermediate area having absorbent fibers and melt fibers sandwiched between said top fiber area and said bottom reinforcing area; said top fiber area, bottom reinforcing area and intermediate area interconnected by an entanglement of said melt fibers, said reinforcing fibers and said absorbent fibers; and said top fiber area, bottom reinforcing area and intermediate area stabilized by melt fiber welds between adjacent said melt fibers, between said melt fibers and said absorbent fibers, between said melt fibers and said reinforcing fibers and between fibers which protrude through said bottom reinforcing area.
Claim 3
Dependent Claim
37 words
The nonwoven fabric of claim 1, wherein said intermediate area, said top fiber area and said reinforcing area are further bonded together by a pattern of compressed areas forming spot welds through the crossection of the fabric.
Claim 4
Dependent Claim
21 words
The nonwoven fabric of claim 1, wherein said top fiber area is comprised of from 30 to 100% polyolefin melt fibers.
Claim 5
Dependent Claim
23 words
The nonwoven fabric of claim 3, wherein said polyolefin melt fibers are selected from the group consisting of polypropylene and polyethylene melt fibers.
Claim 6
Dependent Claim
31 words
The nonwoven fabric of claim 1, wherein said intermediate absorbent area is comprised of from about 10 to 60% polyolefin melt fibers and from about 40 to 90% absorbent staple fibers.
Claim 7
Dependent Claim
23 words
The nonwoven fabric of claim 5, wherein said polyolefin melt fibers are selected from the group consisting of polypropylene and polyethylene melt fibers.
Claim 8
Dependent Claim
26 words
The nonwoven fabric of claim 5, wherein said absorbent staple fibers are selected from the group consisting of rayon, polyester, polypropylene, nylon, fiberglass and cotton fibers.
Claim 9
Dependent Claim
31 words
The nonwoven fabric of claim 1, wherein said bottom reinforcing area is comprised of fiber filaments selected from the group consisting of nylon, polyester, polypropylene, cotton, fiberglass and rayon fiber filaments.
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |