US3696183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming a pile on an article
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1970-10-30
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Granted: 1972-10-03
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Expires: 1990-10-30
Abstract
Abstract A process for producing a pile-surfaced article by pressing softened filament-forming thermoplastic polymeric material through a perforated web into contact with a heated surface to which the polymeric material sticks, parting the web and polymeric material from the heated surface so that filaments are produced and cooling the filaments to harden and disjoin them from the surface.
Inventors
- 👤 Margaret Lilian Steel
- 👤 William Telford Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:39
CPC Classifications
D; D04; D04H; D04H11/00; D04H11/08; B; B29; B29C; B29C55/00; B29C59/00; B29C59/02; B29C59/022; B29C59/025; B29L; B29L2031/00; B29L2031/765
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
18 words
A process according to claim 1, in which softening of the thermoplastic polymeric material is effected by heat.
Claim 2
Dependent Claim
24 words
A process according to claim 1 in which the thermoplastic polymeric material is supplied to the perforated web in the form of a sheet.
Claim 3
Dependent Claim
15 words
A process according to claim 1 in which the thermoplastic polymeric material is a polyolefin.
Claim 4
Dependent Claim
22 words
A process according to claim 4 in which the thermoplastic polymeric material is selected from the group consisting of polyethylene and polypropylene.
Claim 5
Dependent Claim
15 words
A process according to claim 1 in which the thermoplastic polymeric material is a polyamide.
Claim 6
Dependent Claim
15 words
A process according to claim 1 in which the thermoplastic polymeric material is polyvinyl chloride.
Claim 7
Dependent Claim
24 words
A process according to claim 1, in which the thermoplastic polymeric material is a condensation product of a glycol and an aromatic dicarboxylic acid.
Claim 8
Dependent Claim
15 words
A process according to claim 8 in which the thermoplastic polymeric material is polyethylene terephthalate.
Claim 9
Dependent Claim
31 words
A process according to claim 1 in which cooling of the projections to harden and disjoin them from the heated surface is effected by means of a stream of cold gas.
Claim 10
Dependent Claim
12 words
A process according to claim 10 in which the gas is air.
Claim 11
Dependent Claim
36 words
A process according to claim 1 in which the softened thermoplastic polymeric material is pressed through a second perforated web prior to contacting the heated surface, the second web subsequently being stripped from the composite product.
Claim 12
Dependent Claim
16 words
A process according to claim 1 in which the perforated web is a woven textile material.
Claim 13
Dependent Claim
14 words
A process according to claim 1 in which the web is a non-woven material.
Claim 14
Dependent Claim
28 words
A process according to claim 1 in which the heated surface against which the thermoplastic polymeric material is pressed forms part of the cylindrical surface of a roller.
Claim 15
Dependent Claim
25 words
A process according to claim 1 in which pressure to press the thermoplastic polymeric material through the web is applied by means of a roller.
Claim 16
Dependent Claim
23 words
A process according to claim 1 in which a second thermoplastic polymeric material is supplied between the heated surface and the perforated web.
Claim 17
Dependent Claim
25 words
A process according to claim 1 in which a second thermoplastic polymeric material is supplied between the perforated web and the first thermoplastic polymeric material.
Claim 18
Dependent Claim
30 words
A process according to claim 1 in which the heated surface is rendered regionally non-adhesive to the thermoplastic polymeric material, whereby a patterned pile effect is obtained in the product.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |