MANUFACTURE OF INSTRUMENT PANEL WITH AIR BAG HOUSING COVER

Title:

MANUFACTURE OF INSTRUMENT PANEL WITH AIR BAG HOUSING COVER

Document Type and Number:

Japanese Patent JPH10273001

Kind Code:

A

Abstract:

To provide an instrument panel of good heat resisting deformation and fusion property by injecting a thermoplastic elastomer composite showing specific physical properties so as to mold an air bag housing cover, and then injecting thermoplastic resin so as to mold an instrument panel main body.

A thermoplastic elastomer composite constituted of polypropylene resin 30-50 wt.%, ethylene-butene copolymer rubber 20-30 wt.%, ethylene-propylene copolymer rubber 20-30 wt.%, and inorganic filler 5-15 wt.%, and showing physicala propertres of which melt flow rate ASTD-D1238, 230°C, 2.36 kg load) is 3-20 g/10 min., linear-expansion coefficient is 8-11×10-5 cm/cm/°C, and tensile elongation percentage at -35°C (ASTM-D638, tensile speed 200 mm/min) is more than 200 %, is injected so as to mold an air bag receiving cover. Thereafter, thermoplastic resin is injected so as to mold an instrument panel main body, and both are integrated.

Inventors:

UKAI JUNZO
NISHIMURA HIDEO
OKI NAOKI
TAKAHASHI HIDEAKI
NISHITANI YOSHINORI
TSUJI TATSUMI

Application Number:

JP8013197A

Publication Date:

October 13, 1998

Filing Date:

March 31, 1997

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP
TOYOTA MOTOR CORP

International Classes:

B29C45/14; B29C45/16; B60K37/00; B60R21/20; B60R21/205; B60R21/215; C08K3/00; C08L23/08; C08L23/10; C08L23/16; C08L23/20; B60R21/045; B29K23/00; B29L31/58; (IPC1-7): B60R21/045; B29C45/14; B29C45/16; B60K37/00; B60R21/20; C08K3/00; C08L23/08; C08L23/10; C08L23/16; C08L23/20

Attorney, Agent or Firm:

Kazuo Sato (2 outside)

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