US4053670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven fabrics
Assignee: Lantor Ltd
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Filing: 1975-10-31
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Granted: 1977-10-11
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Expires: 1995-10-31
Abstract
Abstract A process for the manufacture of non-woven fabric which comprises the following steps: A. impregnating a web of non-woven fibers with a chemical binder capable of thermal polymerization and with a curing agent for the binder, B. coagulating but not drying the binder, to form a non-woven fabric, C. coating one face of the fabric with a paste or foam of a waterproofing agent, D. drying the impregnated and coated fabric and E. heat embossing the non-coated face of the fabric; non-woven fabric whenever made by the above process.
Inventors
- 👤 Roger LePoutre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B38/00; B32B38/06; B32B38/08; B32B5/02; B32B5/022; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D06; D06N; D06N3/00; D06N3/0056; D06N3/0059; D06N3/04; D06N3/042; D06N7/00; D06N7/0005; D06N7/0007; D06N7/001; B32B2255/00; B32B2255/02; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/06; B32B2262/062; B32B2307/00; B32B2307/40; B32B2307/402; B32B2307/70; B32B2307/726; B32B2307/7265; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/249921; Y10T428/249953; Y10T442/00; Y10T442/20; Y10T442/2221
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
81 words
A process for the manufacture of non-woven fabric which consists essentially of the following steps: a. impregnating a web of non-woven fibres with a chemical binder capable of thermal polymerisation and with a curing agent for the binder, b. coagulating but not drying the binder, to form a non-woven fabric, c. coating one face of the fabric with a layer of a waterproofing agent, d. drying the impregnated and coated fabric and e. heat embossing the non-coated face of the fabric.
Claim 2
Dependent Claim
81 words
A process for the manufacture of non-woven fabric which consists essentially of the following steps: a. impregnating a web of non-woven fibres with a chemical binder capable of thermal polymerisation and with a curing agent for the binder, b. coagulating but not drying the binder, to form a non-woven fabric, c. coating one face of the fabric with a layer of a waterproofing agent, d. drying the impregnated and coated fabric and e. heat embossing the non-coated face of the fabric.
Claim 3
Dependent Claim
16 words
Process as claimed in claim 1 in which the waterproofing agent is applied by a roller.
Claim 4
Dependent Claim
13 words
Process as claimed in claim 1 in which the embossed face is coloured.
Claim 5
Dependent Claim
20 words
Process as claimed in claim 1 in which the face remote from the coated face is coloured prior to embossing.
Claim 6
Dependent Claim
20 words
Process as claimed in claim 1 in which the fabric is bonded on its coated surface to a textile material.
Claim 7
Dependent Claim
21 words
Process as claimed in claim 1 in which the fabric is bonded on its coated surface to a plastic coated fabric.
Claim 8
Dependent Claim
20 words
Process as claimed in claim 1 in which the fabric is further coated on the coated surface with vinyl chloride.
Claim 9
Dependent Claim
19 words
Process as claimed in claim 1 in which the fabric is further coated on the coated surface with polyurethane.
Claim 10
Dependent Claim
16 words
Process as claimed in claim 1 in which the layer contains coloured mineral or organic pigments.
Claim 11
Dependent Claim
16 words
Process as claimed in claim 1 in which the binder contains coloured mineral or organic pigments.
Claim 12
Dependent Claim
12 words
Non-woven fabric whenever made by the process as claimed in claim 1.
Claim 13
Dependent Claim
33 words
A process according to claim 1 wherein the waterproofing layer is composed of ______________________________________
starch 18% by weight
china clay 68% by weight
tallow 12% by weight
wax emulsion 2% by weight
______________________________________
Claim 14
Dependent Claim
20 words
A process according to claim 12 wherein the binder is an acrylic binder and said non-woven fibres are cotton fibres.
Claim 15
Dependent Claim
20 words
A process according to claim 12 wherein the binder is an acrylonitrile binder and said non-woven fibers are cotton fibres.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |