US4100006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card-clothing
Assignee: English Card Clothing Co Ltd
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Filing: 1977-03-24
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Granted: 1978-07-11
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Expires: 1997-03-24
Abstract
Abstract A method of manufacturing flexible card-clothing for use in textile carding comprising the steps of producing a foamed polyvinylchloride compound having a density of between 0.6 and 1.00 grams per cubic centimeter; applying a sealing coat of a material which is compatible with the foamed compound to a fabric layer; applying a layer of the foamed p.v.c. onto the seaing coat to produce a finished foam layer of between 2 and 5 millimeters thickness on the fabric; heating the applied foamed layer to p.v.c. to cause the foamed layer to fuse; applying a surface layer of sealing material onto the exposed surface of the foamed layer to provide a smooth non-absorbent external surface, with the fabric, foamed p.v.c and surface layer together forming a composite foundation face, combining the foundation face with a foundation back to form a laminated foundation, and then inserting card-clothing wires into the foundation so that parts of the wires project from the surface layer.
Inventors
- 👤 John Buckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/84; D01G15/86; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
201 words
A method of manufacturing flexible card-clothing for use in textile carding comprising the steps of: mechanically introducing air into a polyvinylchloride (p.v.c.) compound, which is in a plastisol form, in a continuous foam mixer to produce a foamed compound having a density of between 0.6 and 1.00 grams per cubic centimeter; applying a sealing coat of a material which is compatible with said foamed compound to a fabric layer; applying a layer of said foamed p.v.c. onto said sealing coat to produce a finished foam layer of between 2 and 5 millimeters thickness on said fabric, said sealing coat being adequate to prevent substantial penetration of said fabric layer by said foamed material; heating said applied foamed layer of p.v.c. to cause said foamed layer to fuse; applying a surface layer of sealing material to the exposed surface of said foamed layer to provide a smooth non-absorbent external surface therein, said fabric, foamed p.v.c. and said surface layer together forming a composite foundation face; combining said foundation face with a foundation back to form a laminated foundation and then inserting card-clothing wires into said foundation so that parts of said wires project from the smooth external surface of said surface layer.
Claim 2
Independent Claim
201 words
A method of manufacturing flexible card-clothing for use in textile carding comprising the steps of: mechanically introducing air into a polyvinylchloride (p.v.c.) compound, which is in a plastisol form, in a continuous foam mixer to produce a foamed compound having a density of between 0.6 and 1.00 grams per cubic centimeter; applying a sealing coat of a material which is compatible with said foamed compound to a fabric layer; applying a layer of said foamed p.v.c. onto said sealing coat to produce a finished foam layer of between 2 and 5 millimeters thickness on said fabric, said sealing coat being adequate to prevent substantial penetration of said fabric layer by said foamed material; heating said applied foamed layer of p.v.c. to cause said foamed layer to fuse; applying a surface layer of sealing material to the exposed surface of said foamed layer to provide a smooth non-absorbent external surface therein, said fabric, foamed p.v.c. and said surface layer together forming a composite foundation face; combining said foundation face with a foundation back to form a laminated foundation and then inserting card-clothing wires into said foundation so that parts of said wires project from the smooth external surface of said surface layer.
Claim 3
Dependent Claim
28 words
A method of manufacturing flexible card-clothing according to claim 1, wherein said layer of foamed material has a density of between 0.75 and 0.80 grammes per cubic centimeter.
Claim 4
Dependent Claim
24 words
A method of manufacturing flexible card-clothing according to claim 1, wherein said surface layer comprises one of unfoamed p.v.c.; p.v.c. copolymer and unfoamed polyurethane.
Claim 5
Dependent Claim
17 words
A method of manufacturing flexible card-clothing according to claim 1, wherein said surface layer includes a silicone.
Claim 6
Dependent Claim
25 words
A method of manufacturing flexible card-clothing according to claim 1, wherein the thickness of said surface layer lies within the range 0.1 to 1.0 millimeters.
Claim 7
Dependent Claim
21 words
A method of manufacturing flexible card-clothing according to claim 5, wherein the thickness of said surface layer is approximately 0.2 millimeters.
Claim 8
Dependent Claim
26 words
A method of manufacturing flexible card-clothing according to claim 1, wherein said sealing coat comprises one of p.v.c. latex; nitrile latex; and a p.v.c. plasticiser system.
References Cited (Backward Citations)
US3290729A
Cited
US3562043A
Cited
US3637456A
Cited
US3713868A
Cited
US3947922A
Cited
US3949123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |