US4645710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam laminate structures
Assignee: EIDP Inc
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Filing: 1985-09-25
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Granted: 1987-02-24
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Expires: 2005-09-25
Abstract
Abstract Laminate structures comprising a foamed polyurethane or polyisocyanurate resin core with a facer material uniformly adhered thereto with an adhesive material having functional groups capable of interacting chemically with isocyanate groups in the foamed resin core are disclosed. Suitable adhesive materials include alpha -olefin-acid copolymers, ethylene vinyl alcohol, polyimides, polyamines and phenolic resins. The bond between the foam core and the facer material has a peel strength of at least 1.5 lbs/in., preferably 5 lbs/in.
Inventors
- 👤 Stacey A. Baitinger
- 👤 Robert C. Brothers
- 👤 Kenneth T. Dishart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:51
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/30; B32B2307/304; B32B2419/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A laminate structure comprising a core in the form of a foamed polyurethane or polyisocyanurate resin and a facer material bonded to at least one face of the core with an adhesive material comprising a material having functional groups selected from acid groups, hydroxyl groups, amide groups and amine groups which groups are capable of interacting chemically with isocyanate groups in the polurethane or polyisocyanurate resin, the peel strength of the bond between the core and the facer material being at least about 1.5 lbs./in.
Claim 2
Dependent Claim
85 words
A laminate structure comprising a core in the form of a foamed polyurethane or polyisocyanurate resin and a facer material bonded to at least one face of the core with an adhesive material comprising a material having functional groups selected from acid groups, hydroxyl groups, amide groups and amine groups which groups are capable of interacting chemically with isocyanate groups in the polurethane or polyisocyanurate resin, the peel strength of the bond between the core and the facer material being at least about 1.5 lbs./in.
Claim 3
Dependent Claim
17 words
A laminate structure according to claim 1 where said peel strength is st least about 5 lbs/in.
Claim 4
Dependent Claim
27 words
A laminate according to claims 1 or 2 where the adhesive material comprises a material selected from α-olefin-acid copolymers, ethylene vinyl alcohol, polyamides, polyamines and phenolic resins.
Claim 5
Dependent Claim
14 words
A laminate according to claim 3 where the adhesive material comprises ethylene vinyl alcohol.
Claim 6
Dependent Claim
14 words
A laminate according to claim 3 where the adhesive material comprises an α-olefin-acid copolymer.
Claim 7
Dependent Claim
29 words
A laminate according to claim 5 where the adhesive material comprises an ethylene-methacrylic acid or ethylene-acrylic acid copolymer with an acid content of about 1 to 20 weight %.
Claim 8
Dependent Claim
55 words
A process for preparing a laminate structure of claim 1 comprising coating one side of said facer material with said adhesive material, contacting the coated side of said facer material with the prefoam chemicals for said foamed polyurethane or polyisocyanurate resin, and allowing said prefoam chemicals to foam in contact with said coated facer material.
Claim 9
Dependent Claim
16 words
The process of claim 7 where the adhesive material is extrusion coated onto the facer material.
Claim 10
Dependent Claim
119 words
A laminate structure comprising a core in the form of a foamed polyurethane or polyisocyanurate resin and a facer material bonded to at least one face of the core with an adhesive material comprising a material having functional groups groups selected from acid groups, hydroxyl groups, amide groups and amine groups which groups are capable of interacting chemically with isocyanate groups in the polyurethane or polyisocyanurate resins, said laminate structure prepared by the process comprising coating one side of said facer material with said adhesive material, contacting the coated side of sdaid facer material with the prefoam chemicals for said foamed polyurethane or polyisocyanurate resin, and allowing said prefoam chemicals to foam in contact with said coated facer material.
Claim 11
Dependent Claim
119 words
A laminate structure comprising a core in the form of a foamed polyurethane or polyisocyanurate resin and a facer material bonded to at least one face of the core with an adhesive material comprising a material having functional groups groups selected from acid groups, hydroxyl groups, amide groups and amine groups which groups are capable of interacting chemically with isocyanate groups in the polyurethane or polyisocyanurate resins, said laminate structure prepared by the process comprising coating one side of said facer material with said adhesive material, contacting the coated side of sdaid facer material with the prefoam chemicals for said foamed polyurethane or polyisocyanurate resin, and allowing said prefoam chemicals to foam in contact with said coated facer material.
Claim 12
Dependent Claim
27 words
A laminate structure according to claim 9 where the peel strength of the bond between the core and the facer material is at least about 1.5 lbs/in.
Claim 13
Dependent Claim
17 words
A laminate structure according to claim 10 where said peel strength is at least about 5 lbs/in.
Claim 14
Dependent Claim
26 words
A laminate structure according to claim 9 where the adhesive material comprises a material selected from αolefin-acid copolymers, ethylene vinyl alcohol, polyamides, polyamines and phenolic resins.
Claim 15
Dependent Claim
15 words
A laminate structure according to claim 12 where the adhesive material comprises ethylene vinyl alcohol.
Claim 16
Dependent Claim
15 words
A laminate structure according to claim 12 where the adhesive material comprises an α-olefin-acid copolymer.
Claim 17
Dependent Claim
30 words
A laminate structure according to claim 14 where the adhesive material comprises an ethylene-methacrylic acid or ethylene-acrylic acid copolymer with an acid content of about 1 to 20 weight %.
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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |