Title:
PRODUCTION OF RUBBER FOAM
Document Type and Number:
Japanese Patent JPS60238333
Kind Code:
A
Abstract:
PURPOSE: To produce a foam having closed cell structure and excellent flexibility, by expanding a raw material compound containing a large amount of naphthenic oil kneaded in polynorbornene resin on the outside of a mold.
CONSTITUTION: 200W500pts.wt. naphthenic oil, an adequate amount of a foaming agent, crosslinking agent and another compounding agent are added and kneaded with 100pts.wt. polynorbornene resin to prepare a raw material compound, which is then filled in a mold at 100% filling ratio. The mold is closed firmly with a press and heated to decompose the foaming agent, and the mold is subsequently opened to foam and expand the above-mentioned compound.
Inventors:
KUMASAKA SADAO
HORIKOSHI SHIGEO
KAMANAKA TAMAKI
HORIKOSHI SHIGEO
KAMANAKA TAMAKI
Application Number:
JP9420884A
Publication Date:
November 27, 1985
Filing Date:
May 11, 1984
Export Citation:
Assignee:
HUMAN IND CORP
International Classes:
C08J9/06; B29C41/02; C08J9/04; B29K9/00; B29K86/00; B29K105/04; (IPC1-7): B29C41/02; B29K9/00; B29K105/04; C08J9/04
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)