Method of producing skin-covered foamed plastic article
First Claim
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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.
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Abstract
A method of producing a skin-covered foamed plastic article, which includes preparing a lower mold which has a cavity formed therein; putting a bag-shaped outer skin member into the cavity, the skin member having a porous inner layer; pouring a foamable material for the foamed plastic article into the bag-shaped outer skin member; and adjusting a pressure which is created in the cavity due to foaming of the foamable material.
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Citations
4 Claims
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1. A method of producing a skin-covered foamed plastic article, comprising:
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(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 Dependent Claims (2, 3, 4)
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Specification