Patent US4187852A successfully refreshed from Google Patents.
US4126499A
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Method of manufacture of a rigid, perforated cloth
Assignee: L Payen et Cie SA
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Filing: 1977-08-30
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Granted: 1978-11-21
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Expires: 1997-08-30
Abstract
Abstract A method for manufacturing a rigid, perforated cloth wherein the cloth is woven, in both the warp and weft directions of core yarns wrapped with a thermoplastic covering yarn. After weaving, the cloth is subjected to heating at a temperature greater than the melting point of the thermoplastic covering yarn. The cloth is thereafter cooled, thereby imparting rigidity to the perforated cloth. The product of the present invention is a rigid, perforated cloth in which the individual yarns of the cloth comprise a core yarn that is covered with a thermoplastic cover. The rigid, perforated cloth displays reinforced structural networks due to the plasticity of the thermoplastic material and enhanced resistance to physical and chemical degradation.
Inventors
- 👤 Pierre Payen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/402; B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/086; D03; D03D; D03D15/00; D03D15/20; D03D15/242; D03D15/267; D03D15/283; D03D15/40; D03D15/41; D03D15/47; D03D15/50; D03D15/587; D21; D21F; D21F1/00; D21F1/0027; B01D2239/00; B01D2239/04; B01D2239/0457; B01D2239/0471; B01D2239/0492; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2321/00; D10B2321/02; D10B2331/00; D10B2331/02; D10B2331/04; D10B2401/00; D10B2401/04; D10B2401/041; D10B2401/06; D10B2401/062; D10B2505/00; D10B2505/04; Y; Y10; Y10S; Y10S55/00; Y10S55/45
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A method for producing a rigid, perforated cloth comprising: a. wrapping a core yarn with a covering yarn made from a thermoplastic polymer to produce a completely wrapped yarn, b. weaving said wrapped yarn into a perforated cloth in both warp and weft directions, c. heating said cloth to a temperature in excess of the melting temperature of said thermoplastic covering polymer but below the deformation and melting temperatures of said core yarn in order to melt said covering thermoplastic polymer, d. cooling said heated cloth to provide a rigid, perforated cloth in which the points of intersection of the wrapped yarn adhere to each other due to the prior melting of said thermoplastic polymer.
Claim 2
Independent Claim
115 words
A method for producing a rigid, perforated cloth comprising: a. wrapping a core yarn with a covering yarn made from a thermoplastic polymer to produce a completely wrapped yarn, b. weaving said wrapped yarn into a perforated cloth in both warp and weft directions, c. heating said cloth to a temperature in excess of the melting temperature of said thermoplastic covering polymer but below the deformation and melting temperatures of said core yarn in order to melt said covering thermoplastic polymer, d. cooling said heated cloth to provide a rigid, perforated cloth in which the points of intersection of the wrapped yarn adhere to each other due to the prior melting of said thermoplastic polymer.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein said heating step comprises discontinuous heating.
Claim 4
Dependent Claim
13 words
The method according to claim 1 wherein said heating step comprises continuous heating.
Claim 5
Dependent Claim
21 words
The method according to claim 1 wherein said covering yarn is choosen from the group consisting of polyolefine, polyamide and polyester.
Claim 6
Dependent Claim
15 words
The method according to claim 1 wherein said covering yarn comprises a multifilaments synthetic yarn.
Claim 7
Dependent Claim
13 words
The method according to claim 1 said wrapped yarn is a single cover.
Claim 8
Dependent Claim
29 words
The method of claim 1 wherein said core yarn is chosen from the group consisting of a heat-stable aromatic polyamide, a polyamide-imide, a polyimide, carbon boron, silicon and glass-fiber.
Claim 9
Dependent Claim
13 words
The method according to claim 7 wherein said core yarn comprises poly-(p-phenylene terephtalemide).
Claim 10
Independent Claim
127 words
A method for producing a rigid, perforated cloth comprising: a. Wrapping a core yarn with a covering yarn made from a first thermoplastic polymer to produce a completely wrapped yarn, b. weaving said wrapped yarn alternatively with a second yarn made from a second thermoplastic polymer into a fabric in both weft and warp directions, c. heating said fabric to a temperature in excess of the melting temperature of said first and second thermoplastic polymers but below the deformation and melting temperatures of said core yarn in order to melt said thermoplastic polymers; and d. cooling said heated fabric to provide a rigid fabric in which the points of intersection of the wrapped yarn adhere to each other due to the prior melting of said thermoplastic polymers.
Claim 11
Independent Claim
127 words
A method for producing a rigid, perforated cloth comprising: a. Wrapping a core yarn with a covering yarn made from a first thermoplastic polymer to produce a completely wrapped yarn, b. weaving said wrapped yarn alternatively with a second yarn made from a second thermoplastic polymer into a fabric in both weft and warp directions, c. heating said fabric to a temperature in excess of the melting temperature of said first and second thermoplastic polymers but below the deformation and melting temperatures of said core yarn in order to melt said thermoplastic polymers; and d. cooling said heated fabric to provide a rigid fabric in which the points of intersection of the wrapped yarn adhere to each other due to the prior melting of said thermoplastic polymers.
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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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |