Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Patent
1996-10-29
1998-07-14
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
264 68, 26432812, B29C 4402
Patent
active
057799520
ABSTRACT:
There is disclosed a molded part made of thermoplastic resin to which a foaming agent is added and including a protector body (51) having lock portions (56) serving as a strength required area, a lid element (52), and a hinge (54) between the protector body (51) and the lid element (52) and having a wall thickness less than that of the protector body (51) and the lid element (52), wherein the thermoplastic resin forming the protector body (51) including the lock portions (56) contains no foams but the thermoplastic resin forming the lid element (52) contains foams on opposite side of the hinge (54) from the protector body (51), thereby accomplishing a reduced weight and an ensured strength of the strength required area.
REFERENCES:
patent: 4154784 (1979-05-01), Ruhl
patent: 4157413 (1979-06-01), Ruhl
patent: 4213645 (1980-07-01), Ruhl
patent: 4396147 (1983-08-01), Jackson
patent: 4868926 (1989-09-01), Lowson
patent: 4891471 (1990-01-01), Ono et al.
patent: 4965030 (1990-10-01), Thorn
patent: 5294385 (1994-03-01), Hirota
Excerpt Translation (1 page) of DE 29 45 882 A1 (Undated).
Bierman Jordan B.
Kuhns Allan R.
Sumitomo Wiring Systems Ltd.
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