Title:
PROCESS FOR PRODUCING MULTI-LAYER MOLDED ARTICLES
Document Type and Number:
WIPO Patent Application WO/1996/030185
Kind Code:
A1
Abstract:
A multi-layer molded article such as a door trim is produced by extruding a molten surfacing resin layer (13m) forming a soft thin surface layer (13), a molten intermediate resin layer (12m) forming an expanded soft interlayer (12), and a molten resin layer (11m) forming a support (11) through dieheads (40) of extruders into sheets, feeding these sheets in such a state that the molten resin layer (11m) comes into contact with a bottom tool (20), and compression-molding the sheets. It is preferable that the molten surfacing resin layer (13m) be composed of a thermoplastic elastomer, the molten intermediate resin layer (12m) be composed of an ethylenic copolymer comprising at least ethylene and a radical-polymerizable acid anhydride and containing a blowing agent, and the molten resin layer (11m) be composed of an olefinic resin. Further, it is preferable that the thermoplastic elastomer be an olefinic thermoplastic elastomer and/or a styrenic one having a melt flow rate of 0.1 to 200 g/10 min as determined at 230 �C under a load of 2.16 kg and a Shore A hardness of 50 to 96. Furthermore, it is preferable that at least two of the molten resin layers be laminated in a diehead and extruded and fed in the form of a multi-layer sheet. Additionally, the molten resin layer (11m) may preliminarily be molded and put on the bottom tool, followed by the extrusion thereonto of a multi-layer sheet comprising the molten intermediate and surfacing resin layers (12m and 13m).
Inventors:
ISHITOYA KATSUNORI (JP)
TAKAISHI MINORU (JP)
OKOCHI MICHIHIRO (JP)
IWAMOTO HIDEYUKI (JP)
NAKAGAMI SAKUYOSHI (JP)
TANAKA KAZUFUMI (JP)
TAKAISHI MINORU (JP)
OKOCHI MICHIHIRO (JP)
IWAMOTO HIDEYUKI (JP)
NAKAGAMI SAKUYOSHI (JP)
TANAKA KAZUFUMI (JP)
Application Number:
PCT/JP1996/000592
Publication Date:
October 03, 1996
Filing Date:
March 07, 1996
Export Citation:
Assignee:
ARACO KK (JP)
SHOWA DENKO KK (JP)
ISHITOYA KATSUNORI (JP)
TAKAISHI MINORU (JP)
OKOCHI MICHIHIRO (JP)
IWAMOTO HIDEYUKI (JP)
NAKAGAMI SAKUYOSHI (JP)
TANAKA KAZUFUMI (JP)
SHOWA DENKO KK (JP)
ISHITOYA KATSUNORI (JP)
TAKAISHI MINORU (JP)
OKOCHI MICHIHIRO (JP)
IWAMOTO HIDEYUKI (JP)
NAKAGAMI SAKUYOSHI (JP)
TANAKA KAZUFUMI (JP)
International Classes:
B29C31/04; B29C43/18; B29C43/20; B29C43/34; B29C48/07; B29C48/08; B29C70/78; B60R13/02; B29C44/00; B29C48/00; (IPC1-7): B29C43/20; B29C43/18; B29C43/34; B29C43/36; B29C43/52
Foreign References:
| JPH04135829A | 1992-05-11 | |||
| JPH0326517A | 1991-02-05 | |||
| JPS62181114A | 1987-08-08 | |||
| JPH05162159A | 1993-06-29 | |||
| JPH03227460A | 1991-10-08 | |||
| JPS50132064A | 1975-10-18 |
Other References:
See also references of EP 0764506A4
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