US5629085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin laminate
Assignee: Toyoda Gosei Co Ltd
•
Filing: 1995-03-17
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Granted: 1997-05-13
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Expires: 2015-03-17
Abstract
Abstract A resin laminate of the invention includes sheet laminate including a skin, which is securely joined with a foamed bead base by heating. The resin laminate is manufactured according to the following steps. The foamed bead base and the sheet laminate consisting of the skin, a foam layer, and a thermoplastic resin film are prepared separately. The thermoplastic resin film is made of a resin material which thermally adheres to both the foam layer and the foamed bead base and has a softening temperature lower than those of the foam layer and the foamed bead base. The thermoplastic resin film is softened by heating the sheet laminate, which is then softened by heating the sheet laminate, which is then pressed against and bonded to the foamed bead base by vacuum molding or press forming. The thermoplastic resin film thermally adheres to both the foam layer of the sheet laminate and the foamed bead base, thus joining the sheet laminate with the foamed bead base.
Inventors
- 👤 Keizou Ito
- 👤 Takashi Kato
- 👤 Syoji Sakaida
- 👤 Hikaru Ando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/569; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C51/00; B29C51/10; B29C51/16; B32B27/32; B32B5/00; B32B5/18; B60; B60R; B60R13/00; B60R13/02; B29C2791/00; B29C2791/004; B29C2791/006; B29C44/3415; B29C44/3426; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C51/08; B29C51/082; B29K; B29K2023/00; B29K2023/04; B29K2023/08; B29K2023/083; B29K2023/10; B29K2023/12; B29K2105/00; B29K2105/04; B29K2105/046; B29L; B29L2009/00; B29L2009/001; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3008; B32B2605/00; B32B2605/003; B32B2605/08; B60R13/0256; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249961; Y10T428/249982; Y10T428/249984; Y10T428/249985; Y10T428/249987; Y10T428/249988; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
A resin laminate comprising, in order, a resin member, a thermoplastic resin sheet, a foam layer and a solid base, said resin member which comprises a skin bearing an ornamental surface and is made of a first resin material; said thermoplastic resin sheet being a foam sheet made of a second resin material which is meltable to said first resin material and has a thickness ranging from 0.05 to 1.0 millimeters in a non-foamed state and 0.1 to 3 millimeters in a foamed state and an expansion ratio ranging from 1.5 through 10, and a glass transition point which is 5 to 60 degrees centigrade lower than that of said first resin material, said thermoplastic resin sheet being adhered to said resin member and said foam layer by being melted and resolidified; and said foam layer being made of said first resin material and adhered to said thermoplastic resin sheet by expansion of a plurality of resin foaming beads to form said foam layer.
Claim 2
Dependent Claim
164 words
A resin laminate comprising, in order, a resin member, a thermoplastic resin sheet, a foam layer and a solid base, said resin member which comprises a skin bearing an ornamental surface and is made of a first resin material; said thermoplastic resin sheet being a foam sheet made of a second resin material which is meltable to said first resin material and has a thickness ranging from 0.05 to 1.0 millimeters in a non-foamed state and 0.1 to 3 millimeters in a foamed state and an expansion ratio ranging from 1.5 through 10, and a glass transition point which is 5 to 60 degrees centigrade lower than that of said first resin material, said thermoplastic resin sheet being adhered to said resin member and said foam layer by being melted and resolidified; and said foam layer being made of said first resin material and adhered to said thermoplastic resin sheet by expansion of a plurality of resin foaming beads to form said foam layer.
Claim 3
Dependent Claim
25 words
A resin laminate in accordance with claim 1, wherein said thermoplastic resin sheet is of 50 through 400 micrometers in thickness in the non-foamed state.
Claim 4
Dependent Claim
21 words
A resin laminate in accordance with claim 1, wherein said resin member further comprises a foam sheet laid over said skin.
Claim 5
Dependent Claim
25 words
A resin laminate in accordance with claim 1, wherein said resin member, said foam layer, and said thermoplastic resin sheet are made of olefin resin.
Claim 6
Dependent Claim
14 words
A resin laminate in accordance with claim 4, wherein said olefin resin is polypropylene.
Claim 7
Dependent Claim
18 words
A resin laminate in accordance with claim 5, wherein said resin laminate is an interior member for automobiles.
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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) | 2000-05-12 | 2000-11-11 | 2001-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-12 | 2004-11-11 | 2005-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-12 | 2008-11-11 | 2009-05-13 | $7700.00 | Window Closed / Lapsed |