JPS56109745A - Method of producing sponge rubber - Google Patents

Method of producing sponge rubber

Info

Publication number
JPS56109745A
JPS56109745A JP1179680A JP1179680A JPS56109745A JP S56109745 A JPS56109745 A JP S56109745A JP 1179680 A JP1179680 A JP 1179680A JP 1179680 A JP1179680 A JP 1179680A JP S56109745 A JPS56109745 A JP S56109745A
Authority
JP
Japan
Prior art keywords
mold
skin layer
molding
foaming
surface layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1179680A
Other languages
Japanese (ja)
Other versions
JPS5838105B2 (en
Inventor
Akinori Yutani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YUTANI CORP
YUTANI KK
Original Assignee
YUTANI CORP
YUTANI KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YUTANI CORP, YUTANI KK filed Critical YUTANI CORP
Priority to JP55011796A priority Critical patent/JPS5838105B2/en
Publication of JPS56109745A publication Critical patent/JPS56109745A/en
Publication of JPS5838105B2 publication Critical patent/JPS5838105B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To produce a sponge rubber molding with a desired variation in the thickness of the skin layer of a sponge core by vulcanizing and foaming only the surface layer of material in a semivulcanizing mold as a preliminary step and then, conducting the molding in the main mold after cooling.
CONSTITUTION: It is so arranged that vulcanization proceeds simultaneously with or preceding the foaming on the surface layer of an unvulcanized rubber composition containing a vulcanizing agent and a foaming agent with the size held smaller than the finish size of a molding. To achieve this, the kind and the quantity of the foaming agent is selected while the heating temperature and time are set properly. When the vulcanization progresses to form a skin layer 3 with a proper thickness in the composition, it is cooled with a cooling water passed through a semivulcanizing mold jacket. Finally, the rubber composition whose surface layer alone is vulcanized leaving the skin layer 3 left unvulcanized inside is transferred to the main mold from a semi-unvulcanizing mold and foamed and vulcanized simultaneously to form a sponge core 4 while a complete vulcanization proceeds with the skin layer pressed against the inner wall of a die under a gas pressure. A sponge rubber molding shaped as specified is produced.
COPYRIGHT: (C)1981,JPO&Japio
JP55011796A 1980-02-02 1980-02-02 Method for manufacturing sponge rubber molded products Expired JPS5838105B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55011796A JPS5838105B2 (en) 1980-02-02 1980-02-02 Method for manufacturing sponge rubber molded products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55011796A JPS5838105B2 (en) 1980-02-02 1980-02-02 Method for manufacturing sponge rubber molded products

Publications (2)

Publication Number Publication Date
JPS56109745A true JPS56109745A (en) 1981-08-31
JPS5838105B2 JPS5838105B2 (en) 1983-08-20

Family

ID=11787848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55011796A Expired JPS5838105B2 (en) 1980-02-02 1980-02-02 Method for manufacturing sponge rubber molded products

Country Status (1)

Country Link
JP (1) JPS5838105B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101881A (en) * 1982-12-02 1984-06-12 Sumitomo Electric Ind Ltd Manufacture of lens-loaded optical communication diode
JPS638707U (en) * 1986-07-03 1988-01-21

Also Published As

Publication number Publication date
JPS5838105B2 (en) 1983-08-20

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