US4601937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temporary compaction of fiber non-wovens
Assignee: Akzona Inc
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Filing: 1983-10-17
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Granted: 1986-07-22
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Expires: 2003-10-17
Abstract
Abstract A method of temporarily densifying a bulky non-woven matting or fabric for handling and storage is disclosed, wherein the non-woven is heated, preferably to a temperature above 100° C. but below the softening temperature while in a compacted state, then immediately cooled in the compacted state. Means for reducing stiffness of the compacted matting are also disclosed.
Inventors
- 👤 Eberhard Latussek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:00
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/435; D04H1/425; D04H1/4282; D04H1/4291; D04H1/43; D04H1/4334; D04H1/44; D04H1/58; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/24479; Y10T428/2457; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/24802; Y10T428/24893; Y10T428/24901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A temporarily and reversibly, under steaming conditions, compacted nonwoven matting of up to within one fifth its original thickness, said matting having been heated while in a compacted state to a temperature below that to change the state of aggregation of the fibers and cooled while compacted to retain said compaction until released.
Claim 2
Dependent Claim
53 words
A temporarily and reversibly, under steaming conditions, compacted nonwoven matting of up to within one fifth its original thickness, said matting having been heated while in a compacted state to a temperature below that to change the state of aggregation of the fibers and cooled while compacted to retain said compaction until released.
Claim 3
Dependent Claim
14 words
The reversibly compacted matting of claim 1 manufactured from natural fibers or synthetic fibers.
Claim 4
Dependent Claim
22 words
The reversibly compacted matting of claim 2, wherein the natural fibers are selected from the group of wool, cotton and blends thereof.
Claim 5
Dependent Claim
25 words
The reversibly compacted matting of claim 1, wherein the synthetic fibers are selected from the group of polyester, cellulose, polyamide, polyacrylonitrile, polypropylene and blends thereof.
Claim 6
Dependent Claim
28 words
The temporarily and reversibly compacted matting of claim 1, further comprising slits, cuts or punched holes in said matting to reduce the stiffness thereof for rolling or bundling.
Claim 7
Dependent Claim
21 words
The temporarily and reversibly compacted matting of claim 1, including a superficial binding agent applied to at least one side thereof.
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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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |