Forming method for interior trim material made of corrugated car

Details Forming method for interior trim material made of corrugated car Forming method for interior trim material made of corrugated car

1996-10-21

1998-04-28

Yoder, Michele K.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156222, 156311, 156322, 428182, B32B 3120

Patent

active

057439834

ABSTRACT:
A method for producing an interior a product comprising a corrugated cardboard base formed into a predetermined shape and a decorative skin layer laminated to one side of the cardboard base. Using a hot-press, a substantially planar cardboard base comprising a corrugated core and liners laminated to both sides of the core through thermoplastic resin films is formed into a predetermined shape by heat and pressure at a temperature high enough for remaining heat to be sufficient to melt a hot melt adhesive on the surface of the cardboard base after removal of the formed cardboard base from the hot press but not so hot as to scorch the paper of the cardboard base. The formed cardboard base is then taken out of the hot press and transferred into a cold press, thereafter a decorative skin is put on the surface of the formed cardboard base through a hot melt adhesive. The formed cardboard base and the skin layer are pressed in the cold press, allowing the adhesive to be melted by the remaining heat of the cardboard base to bond the skin layer to the formed cardboard base. While the skin layer bonds to the cardboard base, the thermoplastic resin interposed between the core of the cardboard base and each liner solidifies to fix the formed shape so as to prevent spring-back. The interior trim product can be used for the ceiling of an automobile.

REFERENCES:
patent: 3507730 (1970-04-01), Gambill et al.
patent: 3850725 (1974-11-01), Spielau et al.
patent: 4249983 (1981-02-01), Fujii
patent: 4416716 (1983-11-01), Ichikawa et al.
International Search Report PCT/JP 93/00951.

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