Patent US5456311A successfully refreshed from Google Patents.
Patent US4119481A successfully refreshed from Google Patents.
US4119481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusion laminated high-temperature fabric
Assignee: BP Chemicals Hitco Inc
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Filing: 1976-11-05
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Granted: 1978-10-10
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Expires: 1996-11-05
Abstract
Abstract A high temperature woven refractory fabric is coated by preheating the surface of the fabric by means of actinically matched radiation, suitably infra-red, and then fusion-bondingthe inner surface of a thermoplastic film such as polyurethane to at least one surface of the fabric to fusion-bond the film thereto. The warm fusion-bonded film is then processed through a non-heated nip-roll assembly in which at least one of the rollers has a soft facing such as rubber which impresses the film into the interstitial fill-weft woven intersections to form a fabric-appearing coated product. The infra-red wave length is selected for maximum absorption by the fabric and the intensity of the radiation and speed of the film are controlled to provide sufficient but not excessive fusion or melting of the film. The coating apparatus includes a control device in which an infra-red sensing non-contact thermometer senses the temperature of the fabric as it leaves the infra-red heater and develops a control signal that controls the speed of the fabric through the system.
Inventors
- 👤 Don A. Beckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:09
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1403; B29C65/1412; B29C65/1429; B29C65/1432; B29C65/1464; B29C65/1467; B29C65/1477; B29C65/148; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7894; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/72; B29C66/729; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91216; B29C66/91221; B29C66/914; B29C66/9141; B29C66/91411; B29C66/919; B29C66/9192; B29C66/91921; B29C66/93; B29C66/934; B32B27/36; B32B27/40; B29C59/00; B29C59/02; B29C59/04; B29C66/71; B29C66/939; B29C66/96; B29C66/961; B29K; B29K2313/00; B29L; B29L2009/00; B32B37/00; B32B2037/0092; B32B2262/00; B32B2262/10; B32B2309/00; B32B2309/14; B32B2310/00; B32B2310/08; B32B2310/0806; B32B2310/0825; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3854; Y10T442/3862; Y10T442/387
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
118 words
A method of coating the surface of a high heat capacity, woven, inorganic, refractory fabric with a thermoplastic film having a lower heat distortion temperature comprising the steps of: applying infra-red radiation to a surface of said fabric at a wavelength having high absorptance by said surface to heat the surface to a temperature above the softening temperature of the thermoplastic film; applying the thermoplastic film directly to the heated surface and softening the inner surface of the film without softening the outer surface of the film and pressure bonding the inner surface of the film to the surface while at said temperature by passing the fabric-film assembly between the nip of a pair of unheated nip rolls.
Claim 2
Independent Claim
118 words
A method of coating the surface of a high heat capacity, woven, inorganic, refractory fabric with a thermoplastic film having a lower heat distortion temperature comprising the steps of: applying infra-red radiation to a surface of said fabric at a wavelength having high absorptance by said surface to heat the surface to a temperature above the softening temperature of the thermoplastic film; applying the thermoplastic film directly to the heated surface and softening the inner surface of the film without softening the outer surface of the film and pressure bonding the inner surface of the film to the surface while at said temperature by passing the fabric-film assembly between the nip of a pair of unheated nip rolls.
Claim 3
Dependent Claim
13 words
A method according to claim 1 in which the method is operated continuously.
Claim 4
Dependent Claim
13 words
A method according to claim 1 in which the fibers comprise amorphous silica.
Claim 5
Dependent Claim
27 words
A method according to claim 3 in which the silica content of the fibers is at least 96% and the chlorine content is less than 50 ppm.
Claim 6
Dependent Claim
19 words
A method according to claim 2 in which the thermoplastic film is selected from vinyl, polyester or urethane polymers.
Claim 7
Dependent Claim
13 words
A method according to claim 5 in which the film is a polyesterurethane.
Claim 8
Dependent Claim
30 words
A method according to claim 1 further including the step of controlling the speed of the fabric and film in response to changes in the temperature of the heated fabric.
Claim 9
Dependent Claim
17 words
A method according to claim 7 in which the temperature of the film bonded fabric is sensed.
Claim 10
Dependent Claim
25 words
A method according to claim 1 in which at least one of the nip-rolls has a resilient surface which embosses the film into the fabric.
Claim 11
Dependent Claim
25 words
A method according to claim 9 in which the film thickness is less than the weave relief so as to produce a fabric-appearance coated material.
Claim 12
Dependent Claim
22 words
A method according to claim 1 in which the radiation is infra red at a wavelength having maximum absorptance by said surface.
Claim 13
Dependent Claim
27 words
A method according to claim 2 in which the travel of the fabric between the radiation stage and nip of the rolls is less than 12 inches.
References Cited (Backward Citations)
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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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |