Method of forming a shaped article of resin using cavity enlarge

Details Method of forming a shaped article of resin using cavity enlarge Method of forming a shaped article of resin using cavity enlarge

1994-07-07

1995-12-12

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 464, 264 53, 264 54, 264255, 264510, B29C 4406, B29C 4410

Patent

active

054747236

ABSTRACT:
A shaped article of resin disclosed which possesses a two-ply construction wherein the outer side of a core-layer resin foamed at a void ratio in the range of from 30 to 80% is wrapped with a skin-layer resin. This shaped article of resin is produced by a method which comprises injecting a skin-layer resin into a molding mold and subsequently or simultaneously injecting therein a core-layer resin foamed in advance in a molding device.

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Machine Design, vol. 44, No. 6, 29 Jun. 1972, pp. 69-71, Ogorkiewicz R. M. "Sandwich Molding".

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