Method of molding skin-covered foamed plastic article
First Claim
1. A method of producing a skin-covered foamed plastic article, comprising by steps:
- (a) preparing a bag-shaped skin member which consists of two parts, the two parts having respective inwardly projected peripheral portitions stitched up, one of said peripheral portions being folded back fully to constitute a thicker peripheral portion;
(b) preparing a mold which has a cavity formed therein, said cavity having at its wall an elongate ridge thereby to define a groove at a given portion of said cavity;
(c) putting said skin member in said cavity in such a manner that said thicker peripheral portion is forcedly received in said groove;
(d) pouring a liquid material of foamed plastic into the bag-shaped skin member in the mold;
(e) inserting a shaping die into said cavity;
(f) putting a lid member on said mold thereby to close said cavity; and
(g) removing, upon sufficient hardening of the material, said lid member and said shaping die and taking out a hardened product of foamed plastic from the mold.
1 Assignment
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Accused Products
Abstract
Herein disclosed is a method of producing a skin-covered foamed polyurethane article, such as a seatback proper of an automotive seat, a seat cushion proper of the same or the like. A bag-shaped skin member which is to constitute the skin of the article consists of two parts which have respective inwardly projected peripheral portions stitched up. One of the peripheral portions is folded back fully to constitute a thicker peripheral portion. A mold used for molding the article has a groove which extends around the side wall of the cavity. The skin member is put into the cavity of the mold in such a manner that the thicker portion is forcedly received in the groove, and then a liquid material of polyurethane is poured into the bag-shaped skin member.
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Citations
9 Claims
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1. A method of producing a skin-covered foamed plastic article, comprising by steps:
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(a) preparing a bag-shaped skin member which consists of two parts, the two parts having respective inwardly projected peripheral portitions stitched up, one of said peripheral portions being folded back fully to constitute a thicker peripheral portion; (b) preparing a mold which has a cavity formed therein, said cavity having at its wall an elongate ridge thereby to define a groove at a given portion of said cavity; (c) putting said skin member in said cavity in such a manner that said thicker peripheral portion is forcedly received in said groove; (d) pouring a liquid material of foamed plastic into the bag-shaped skin member in the mold; (e) inserting a shaping die into said cavity; (f) putting a lid member on said mold thereby to close said cavity; and (g) removing, upon sufficient hardening of the material, said lid member and said shaping die and taking out a hardened product of foamed plastic from the mold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification