US3853686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl acetate resin impregnated plastic laminate and process therefor
Assignee: General Electric Co
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Filing: 1972-12-19
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Granted: 1974-12-10
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Expires: 1992-12-19
Abstract
Abstract Thermosetting resin impregnated paper laminates are provided which have good integrity and are readily adherable to substrates using a wide range of adhesives. These qualities are imparted by applying to the outer side of the back core surface particular polyvinyl acetate compositions, such compositions being coated on the core paper immediately after it is impregnated with its thermosetting resin while still wet with said resin and before drying and assembling into the final laminate.
Inventors
- 👤 W Clendenin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:11
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C09J7/00; C09J7/20; C09J7/205; C09J7/21; C08; C08L; C08L2205/00; C08L2205/02; C08L2666/00; C08L2666/02; C08L2666/04; C08L31/00; C08L31/02; C08L31/04; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2883
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
A RESIN IMPREGNATED PLASTIC LAMINATE WHICH IS READILY ADHERABLE TO A SUBSTRATE WITHOUT SANDING, THE ADHERING SURFACE OF SAID LAMINATE BEING PAPER SHEET WHICH DURING ITS PREPARATION AND BEFORE LAYUP AND CONSOLIDATION INTO THE LAMINATE IS TREATED IMMEDIATELY AFTER RESIN IMPREGNATION AND BEFORE DRYING WITH ESSENTIALLY A MIXTURE OF BY WEIGHT, ABOUT 65 TO 80 PERCENT POLYVINYL ACETATE-ETHYLENE COPOLYMER EMULSION AND ABOUT 35 TO 20 PERCENT OF A DISPERSION OF VINYL ACETATE HOMOPOLYMER, SAID TREATED PAPER SHEET BEING ALSO NON-BLOCKING.
Claim 2
Dependent Claim
80 words
A RESIN IMPREGNATED PLASTIC LAMINATE WHICH IS READILY ADHERABLE TO A SUBSTRATE WITHOUT SANDING, THE ADHERING SURFACE OF SAID LAMINATE BEING PAPER SHEET WHICH DURING ITS PREPARATION AND BEFORE LAYUP AND CONSOLIDATION INTO THE LAMINATE IS TREATED IMMEDIATELY AFTER RESIN IMPREGNATION AND BEFORE DRYING WITH ESSENTIALLY A MIXTURE OF BY WEIGHT, ABOUT 65 TO 80 PERCENT POLYVINYL ACETATE-ETHYLENE COPOLYMER EMULSION AND ABOUT 35 TO 20 PERCENT OF A DISPERSION OF VINYL ACETATE HOMOPOLYMER, SAID TREATED PAPER SHEET BEING ALSO NON-BLOCKING.
Claim 3
Dependent Claim
57 words
A laminate as in claim 1 in which said copolymer emulsion is a copolymer of ethylene and polyvinyl acetate having a solids content of about 55 to 57 percent by weight and a viscosity of 1100 to 1600 centipoises at 77*F and said homopolymer of vinyl acetate has a viscosity of 8.5 to 10 poises at 77''F.
Claim 4
Dependent Claim
72 words
THE PROCESS OF MAKING THE RESIN IMPREGNATED LAMINATE WHICH IS NON-BLOCKING AND READILY ADHERABLE WITHOUT SANDING TO A SUBSTRATE WHICH PROCESS COMPRISES TREATING THE ADHERING PAPER SHEET BEFORM LAYUP AND CONSOLIDATION INTO A LAMINATE AND IMMEDIATELY AFTER RESIN IMPREGNATION AND BEFORE DRYING WITH ESSENTIALLY A MIXTURE OF BY WEIGHT ABOUT 65 TO 80 PERCENT POLYVINYL ACETATE ETHYLENE COPOLYMER EMULSION AND ABOUT 35 TO 20 PERCENT OF A DISPERSION OF VINYL CETATE HOMOPOLYMER.
Claim 5
Dependent Claim
72 words
THE PROCESS OF MAKING THE RESIN IMPREGNATED LAMINATE WHICH IS NON-BLOCKING AND READILY ADHERABLE WITHOUT SANDING TO A SUBSTRATE WHICH PROCESS COMPRISES TREATING THE ADHERING PAPER SHEET BEFORM LAYUP AND CONSOLIDATION INTO A LAMINATE AND IMMEDIATELY AFTER RESIN IMPREGNATION AND BEFORE DRYING WITH ESSENTIALLY A MIXTURE OF BY WEIGHT ABOUT 65 TO 80 PERCENT POLYVINYL ACETATE ETHYLENE COPOLYMER EMULSION AND ABOUT 35 TO 20 PERCENT OF A DISPERSION OF VINYL CETATE HOMOPOLYMER.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |