US4224376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing a heat-resistant composite sheet
Assignee: Honda Motor Co Ltd
•
Filing: 1979-07-03
•
Granted: 1980-09-23
•
Expires: 1999-07-03
Abstract
Abstract A process for manufacturing a heat-resistant composite sheet comprising applying a bonding agent with an added cross-linking agent on one of the facing surfaces to be adhered of a thermoplastic resin sheet and a polyolefin foam sheet. The two sheets are then placed one upon another through the bonding agent coated layer and are bonded together while heating the same and applying pressure thereto.
Inventors
- 👤 Yoshiki Ishige
- 👤 Toshiyuki Kinugasa
- 👤 Yoshio Ando
- 👤 Shoji Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/12; B32B37/1207; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; B32B27/32; B32B37/14; B32B37/16; B32B37/20; B32B37/203; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/12; C; C09; C09J; C09J5/00; C09J5/06; B32B38/00; B32B2038/0052; B32B2038/0076; B32B2250/00; B32B2250/24; B32B2250/246; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/72; B32B2307/00; B32B2307/30; B32B2307/306; B32B2323/00; B32B2323/10; B32B2327/00; B32B2327/06; B32B2367/00; B32B2375/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/249993
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A process for manufacturing a heat-resistant composite sheet comprising the steps of coating at least one of the facing surfaces to be adhered of a thermoplastic resin sheet and a polyolefin foam sheet with a bonding agent prepared by adding a cross-linking agent to a hot-melting type bonding agent of the polyester type or of the polyurethane type, and placing the two sheets one upon another at the bonding agent coated layer and subjecting the sheets to heat and pressure so that a cross-linking hardening treatment may be carried out.
Claim 2
Dependent Claim
90 words
A process for manufacturing a heat-resistant composite sheet comprising the steps of coating at least one of the facing surfaces to be adhered of a thermoplastic resin sheet and a polyolefin foam sheet with a bonding agent prepared by adding a cross-linking agent to a hot-melting type bonding agent of the polyester type or of the polyurethane type, and placing the two sheets one upon another at the bonding agent coated layer and subjecting the sheets to heat and pressure so that a cross-linking hardening treatment may be carried out.
Claim 3
Dependent Claim
28 words
A process as claimed in claim 1, wherein the polyolefin foam sheet and the thermoplastic sheet with the bonding agent are heated before being placed one upon another.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 1, wherein the thermoplastic resin sheet is a polyvinyl chloride sheet of comparatively small thickness.
Claim 5
Dependent Claim
21 words
A process as claimed in claim 1, wherein the polyolefin foam sheet is a polypropylene foam sheet of comparatively large thickness.
Claim 6
Dependent Claim
14 words
A process as claimed in claim 1, wherein the cross-linking agent is an isocyanate.
Claim 7
Dependent Claim
18 words
A heat-resistant composite sheet manufactured by the process as claimed in any one of claims 1 to 5.
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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |