×

Method of producing skin-covered foamed plastic article

  • US 4,976,414 A
  • Filed: 10/20/1988
  • Issued: 12/11/1990
  • Est. Priority Date: 10/31/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of producing a skin-covered foamed plastic article, comprising:

  • (a) preparing a lower mold which has a cavity formed therein;

    (b) putting a bag-shaped outer skin member into said cavity, said skin member having a porous inner layer;

    (c) sealingly closing said cavity;

    (d) pouring a foamable material for the foamed plastic article into the bag-shaped outer skin member, said material being capable of impregnating a portion of said inner layer, said material foaming in said cavity and causing pressure in said cavity to gradually increase;

    (e) curing said material to provide said article; and

    (f) activating pressure control means when said pressure increases to a predetermined value and thereby adjusting said pressure such that said curing is carried out under a certain pressure which will provide said inner layer with a material-impregnated part of a desired thickness therethroughout.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×