Manufacturing method of resin damper having foamed resin seal ma

Details Manufacturing method of resin damper having foamed resin seal ma Manufacturing method of resin damper having foamed resin seal ma

1994-05-13

1997-11-25

Yoder, Michele K.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

156305, 264266, 26432812, B29C 4516

Patent

active

056908814

ABSTRACT:
The present invention relates to a manufacturing method for a damper which is effective when used for a car air conditioner as a air flow switching door.
A resin damper body to which surfaces foaming resin seal materials are joined is formed by setting the foaming resin seal materials within mold spaces beforehand and then injecting the resin thereinto, and during which process the damper body and the seal materials are joined together. Particularly, the structure of the metal molds, the structure of an injection nozzle, and the shape of the seal materials are improved in order to improve the shape of the seal materials and the shape of the damper body during the injection molding.

REFERENCES:
patent: 4677021 (1987-06-01), Kayakabe et al.
patent: 4994226 (1991-02-01), Nakagawa et al.
patent: 5294380 (1994-03-01), Okamoto

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