Patent US4477504A successfully refreshed from Google Patents.
US4477504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilization of plastic films to control gas pressure and reduce foam in cellular foam products
Assignee: SHELLER-GLOBE Corp A CORP OF OHIO
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Filing: 1982-08-17
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Granted: 1984-10-16
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Expires: 2002-08-17
Abstract
Abstract A cellular foam product having a composite foam supporting substrate and a method for making same. The composite substrate includes a load supporting structure to which a continuous barrier film is bonded. The barrier film seals openings in the structure through which gas pressure loss and foam leakage may occur during subsequent foam generating reaction processes. The substrate is formed by coating desired foam supporting surfaces of the supporting structure with an adhesive and vacuum forming a preheated thin flexible plastic film to the supporting structure to bond the film to the foam supporting surfaces.
Inventors
- 👤 Larry E. Bailey
- 👤 Edward B. Morello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:49
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/146; B29C44/1261; B29C51/00; B29C51/16; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24512; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
119 words
A composite substrate and cellular foam product comprising: a generally rigid load supporting member having holes and openings therein; plastic barrier film means vacuum bonded over exterior portions of said load supporting member, said barrier film means being operative to render said exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular foam and to define a seal extending across said holes and openings for inhibiting passage of said reaction products through said holes and openings to assist in controlling and maintaining proper foam formation; and cellular foam means molded over said barrier film means in a form which is operative to provide a desired final shape to the product.
Claim 2
Dependent Claim
119 words
A composite substrate and cellular foam product comprising: a generally rigid load supporting member having holes and openings therein; plastic barrier film means vacuum bonded over exterior portions of said load supporting member, said barrier film means being operative to render said exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular foam and to define a seal extending across said holes and openings for inhibiting passage of said reaction products through said holes and openings to assist in controlling and maintaining proper foam formation; and cellular foam means molded over said barrier film means in a form which is operative to provide a desired final shape to the product.
Claim 3
Dependent Claim
21 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said cellular foam means comprises urethane foam.
Claim 4
Dependent Claim
24 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said cellular foam means comprises an integral skin urethane foam.
Claim 5
Dependent Claim
23 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said load supporting member comprises an acrylonitrile-butadiene-styrene copolymer material.
Claim 6
Dependent Claim
25 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said load supporting member comprises a phenylene oxide based resin material.
Claim 7
Dependent Claim
23 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises a treated polyolefin film.
Claim 8
Dependent Claim
19 words
A composite substrate and cellular foam product as set forth in claim 6 wherein said treated polyolefin comprises polyethylene.
Claim 9
Dependent Claim
19 words
A composite substrate and cellular foam product as set forth in claim 6 wherein said treated polyolefin comprises polypropylene.
Claim 10
Dependent Claim
23 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises an ionomer resin film.
Claim 11
Dependent Claim
23 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises a modified copolyester film.
Claim 12
Dependent Claim
23 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises a polyvinyl chloride film.
Claim 13
Dependent Claim
22 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises a styrene film.
Claim 14
Dependent Claim
34 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means comprises a plastic film having a thickness of from approximately 0.003 inches to approximately 0.050 inches.
Claim 15
Dependent Claim
34 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means is vacuum bonded to said exterior portions of said load supporting member with a rubber adhesive.
Claim 16
Dependent Claim
35 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means is vacuum bonded to said exterior portions of said load supporting member with a urethane based adhesive.
Claim 17
Dependent Claim
35 words
A composite substrate and cellular foam product as set forth in claim 1 wherein said barrier film means is vacuum bonded to said exterior portions of said load supporting member with a latex based adhesive.
Claim 18
Dependent Claim
115 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from an acrylonitrile-butadiene-styrene copolymer material and having at least one through aperture therein; a thin flexible ionomer resin barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 19
Dependent Claim
115 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from an acrylonitrile-butadiene-styrene copolymer material and having at least one through aperture therein; a thin flexible ionomer resin barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 20
Dependent Claim
37 words
A composite substrate and cellular urethane foam product as set forth in claim 17 wherein said barrier film is bonded over the exterior of said load supporting member with an adhesive and the application of a vacuum.
Claim 21
Dependent Claim
115 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from an acrylonitrile-butadiene-styrene copolymer material and having at least one through aperture therein; a thin flexible modified copolyester barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 22
Dependent Claim
115 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from an acrylonitrile-butadiene-styrene copolymer material and having at least one through aperture therein; a thin flexible modified copolyester barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 23
Dependent Claim
37 words
A composite substrate and cellular urethane foam product as set forth in claim 19 wherein said barrier film is bonded over the exterior of said load supporting member with an adhesive and the application of a vacuum.
Claim 24
Dependent Claim
116 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from a polyphenylene oxide copolymer material and having at least one through aperture therein; a thin flexible ionomer resin barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 25
Dependent Claim
116 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from a polyphenylene oxide copolymer material and having at least one through aperture therein; a thin flexible ionomer resin barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 26
Dependent Claim
37 words
A composite substrate and cellular urethane foam product as set forth in claim 21 wherein said barrier film is bonded over the exterior of said load supporting member with an adhesive and the application of a vacuum.
Claim 27
Dependent Claim
116 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from a polyphenylene oxide copolymer material and having at least one through aperture therein; a thin flexible modified copolyester barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 28
Dependent Claim
116 words
A composite substrate and cellular urethane foam product comprising: a generally rigid load supporting member formed from a polyphenylene oxide copolymer material and having at least one through aperture therein; a thin flexible modified copolyester barrier film bonded over the exterior of said load supporting member and operative to render the exterior portions of said load supporting member impervious to reaction products which are generated during formation of said cellular urethane foam and to define a seal extending across said aperture for inhibiting passage of said reaction products through said aperture; and cellular urethane foam means molded over said barrier film in a form which is operative to provide a desired final shape to the product.
Claim 29
Dependent Claim
37 words
A composite substrate and cellular urethane foam product as set forth in claim 23 wherein said barrier film is bonded over the exterior of said load supporting member with an adhesive and the application of a vacuum.
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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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |