Title:
MASK CUSHION AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3238319
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To integrally mold a mask cushion having a thick-walled part and a uniform thin-walled part by slush molding especially using a powdery or pasty plastic material such as a vinyl chloride plastisol in a conventional method for producing a mask cushion.
SOLUTION: In a mask cushion having a thick-walled part and a thin-walled part produced by using a powdery or pasty plastic material such as a vinyl chloride plastisol, the wall thickness thereof is 1-20mm in the thick-walled part and 0.2-0.8 mm in the thin-walled part. In a molding method, the thick-walled part is molded by casting molding and the thin-walled part is molded by slush molding and molds are mated in a semi-cured state of both parts to perform integral molding.
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Inventors:
Minoru Shibata
Kenji Kawai
Kenji Kawai
Application Number:
JP1788196A
Publication Date:
December 10, 2001
Filing Date:
February 02, 1996
Export Citation:
Assignee:
Sumitomo Bakelite Co., Ltd.
International Classes:
B29C41/18; A61M16/06; B29C39/02; B29C69/00; B29C69/02; B29L31/48; (IPC1-7): B29C69/02; A61M16/06; B29C39/02; B29C41/18
Domestic Patent References:
| JP6238685A | ||||
| JP4288209A | ||||
| JP5619853Y2 |