Title:
多孔性ホースの製造方法
Document Type and Number:
Japanese Patent JP3583539
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a porous hose in which control for the degree of expansion is easily performed without the necessity for especially performing complex work and also safety in handling is excellent. SOLUTION: A communication part (open cell structure) 4 capable of permeating liquid and/or gas is formed on the peripheral wall by extruding thermoplastic elastomer 5 while injecting water used as a foaming agent at the prescribed pressure into the cylinder of an extruder filled with thermoplastic elastomer 5. Further, Shore hardness of thermoplastic elastomer is 50A-80D and the injection amount of water is 0.05-5 pts.wt. for 100 pts.wt. thermoplastic elastomer. Expansion extrusion is favorably performed by regulating the temperature of thermoplastic elastomer to >=50 deg.C.
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Inventors:
Toshiyuki Yoshimura
Seiji Okaya
Seiji Okaya
Application Number:
JP1947396A
Publication Date:
November 04, 2004
Filing Date:
January 09, 1996
Export Citation:
Assignee:
Nishikawa Rubber Industry Co., Ltd.
International Classes:
A01G25/06; B29C47/00; B29K21/00; B29K105/04; B29L23/00; (IPC1-7): B29C47/00; A01G25/06
Domestic Patent References:
| JP7278336A | ||||
| JP50119433A | ||||
| JP7053406B2 | ||||
| JP6073222A | ||||
| JP6507128A | ||||
| JP7276463A |
Attorney, Agent or Firm:
Hiroshi Yamamoto