Title:
BLOW-MOLDED DOUBLE WALL STRUCTURE
Document Type and Number:
Japanese Patent JP3236680
Kind Code:
B2
Abstract:
PURPOSE: To improve the appearance of an outer surface of one wall and increase a mechanical strength such as rigidity without shrink and warp on the outer surface.
CONSTITUTION: A hollow double wall structure is manufactured by blow molding thermoplastic resin. One wall 1 and the other wall 2 are opposed via an interval. A solid rib 3 is integrally formed between the walls 1 and 2, and an entire peripheral surface is closed by a peripheral edge (not shown). The rib 3 is formed at a part from a fusion-bonded part to the wall 1 to a part to the vicinity of a thinner part 3A than the wall 1 and the other thick part 3B, and a part except the rib 3 is hollow 4.
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Inventors:
Haruhiro Endo
Application Number:
JP31291792A
Publication Date:
December 10, 2001
Filing Date:
October 28, 1992
Export Citation:
Assignee:
Kyoraku Co., Ltd.
International Classes:
B29C49/04; B29C33/42; B29C49/20; B29C49/48; B29L24/00; (IPC1-7): B29C49/04; B29C33/42; B29C49/48
Domestic Patent References:
| JP58101988A | ||||
| JP248323U |
Attorney, Agent or Firm:
Yoshiro Sakamoto