EP0078174A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for producing metal/thermoplastic resin/metal sandwich laminate
Assignee: Nippon Steel Corp
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Filing: 1982-10-25
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Granted: —
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Expires: 2002-10-25
Abstract
Abstract A process for producing a metal/thermoplastic resin/ metal sandwich laminate of improved bonding strength and secondary-processability, wherein each metal layer is 0.1-1.0 mm thick, and the inner layer is a multilayered composite sheet comprising a thermoplastic resin core of which both sides are previously coated with another thermoplastic resin capable of adhering strongly to the metal.
Inventors
- 👤 Nobuo Fukushima
- 👤 Yoshihiko Kitagawa
- 👤 Takanobu Sonobe
- 👤 Hiroo Toya
- 👤 Masatsune Kondo
- 👤 Toshiaki Shiota
- 👤 Minoru Nishihara
- 👤 Hiroyuki Nagai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:17
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B37/00; B32B37/12; B32B7/00; B32B7/04; B32B7/12; B32B2305/00; B32B2305/30; B32B2307/00; B32B2307/70; B32B2307/714; B32B2311/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A process for producing metal/thermoplastic resin/metal sandwich laminates of improved bonding strength and secondary-processability, wherein each metal layer is 0.1-1.0 mm thick, which comprises bonding together metal sheets and a multilayered composite sheet comprising a thermoplastic resin core of which both sides are previously coated with another thermoplastic resin capable of adhering strongly to the metal.
Claim 2
Dependent Claim
56 words
A process for producing metal/thermoplastic resin/metal sandwich laminates of improved bonding strength and secondary-processability, wherein each metal layer is 0.1-1.0 mm thick, which comprises bonding together metal sheets and a multilayered composite sheet comprising a thermoplastic resin core of which both sides are previously coated with another thermoplastic resin capable of adhering strongly to the metal.
Claim 3
Dependent Claim
32 words
A process according to claim 1, wherein the bonding of the metal sheets to the multilayered composite sheet of thermoplastic resins is carried out by fusing the surface of the composite sheet.
Claim 4
Dependent Claim
51 words
A process according to claim 1 or 2, wherein the thermoplastic resin capable of adhering strongly to the metal is a modified polyolefin composition prepared by reacting a mixture of a crystalline polyolefin, unsaturated carboxylic acid, and magnesium oxide at a temperature of the melting point of the polyolefin or above.
Claim 5
Dependent Claim
30 words
A process according to claim 1 or 2 wherein the thermoplastic resin capable of adhering strongly to the metal is an ethylene-glycidyl methacrylate copolymer and/or an ethylene-vinyl acetate-glycidyl methacrylate terpolymer.
Claim 6
Dependent Claim
43 words
A process according to any one of the preceding claims, wherein a steel sheet having an electrolytic chromate treatment coat at least on its surface facing the resin layer is employed as the metal sheet to improve the corrosion resistance of the laminate.
Claim 7
Dependent Claim
47 words
A process according to any one of claims 1-4, wherein a steel sheet having a Fe-Zn alloy plating layer or Ni-Zn alloy plating layer at least on its surface facing the resin layer is employed as the metal sheet to improve the corrosion resistance of the laminate.
References Cited (Backward Citations)
No citation records indexed.
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