JPS5725938A - Preparation of high foam hard rubber - Google Patents

Preparation of high foam hard rubber

Info

Publication number
JPS5725938A
JPS5725938A JP10006780A JP10006780A JPS5725938A JP S5725938 A JPS5725938 A JP S5725938A JP 10006780 A JP10006780 A JP 10006780A JP 10006780 A JP10006780 A JP 10006780A JP S5725938 A JPS5725938 A JP S5725938A
Authority
JP
Japan
Prior art keywords
rubber
heated
vulcanized
high foam
mold
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.)
Pending
Application number
JP10006780A
Other languages
Japanese (ja)
Inventor
Sadao Kumasaka
Shigeo Horikoshi
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.)
KOKOKU GOMME KK
KOUKOKU GOMU KK
Toyo Quality One Corp
Original Assignee
KOKOKU GOMME KK
KOUKOKU GOMU KK
Toyo Rubber Chemical Industrial Co Ltd
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 KOKOKU GOMME KK, KOUKOKU GOMU KK, Toyo Rubber Chemical Industrial Co Ltd filed Critical KOKOKU GOMME KK
Priority to JP10006780A priority Critical patent/JPS5725938A/en
Publication of JPS5725938A publication Critical patent/JPS5725938A/en
Pending legal-status Critical Current

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE: To obtain the captioned rubber having high foam rates and low densities by a method wherein, first, semi-vulcanized high foam rubber is molded and then heated at high temperatures and vulcanized completely.
CONSTITUTION: Sulphur (20W50pts.wt.), foaming agent (10W30pts.), if necessary, heating accelerator, bulking agent, coloring agent are mixed with natual or synthetic rubber (100pts.wt.), they are kneaded to prepare the raw material. The raw material is inserted into a metal mold, heated preferably at 120W150°C and for 5W25min or extruded in the form of a sheet under a heated state to mold semi- vulcanized high grade foam rubber. Then, this is put into another mold, heated preferably at 160W190°C and 20W60min and vulcanization is completed to obtain the intended hard rubber.
COPYRIGHT: (C)1982,JPO&Japio
JP10006780A 1980-07-22 1980-07-22 Preparation of high foam hard rubber Pending JPS5725938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10006780A JPS5725938A (en) 1980-07-22 1980-07-22 Preparation of high foam hard rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10006780A JPS5725938A (en) 1980-07-22 1980-07-22 Preparation of high foam hard rubber

Publications (1)

Publication Number Publication Date
JPS5725938A true JPS5725938A (en) 1982-02-10

Family

ID=14264112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10006780A Pending JPS5725938A (en) 1980-07-22 1980-07-22 Preparation of high foam hard rubber

Country Status (1)

Country Link
JP (1) JPS5725938A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS466349Y1 (en) * 1967-03-14 1971-03-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS466349Y1 (en) * 1967-03-14 1971-03-05

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