JPS5725938A - Preparation of high foam hard rubber - Google Patents
Preparation of high foam hard rubberInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS466349Y1 (en) * | 1967-03-14 | 1971-03-05 |
-
1980
- 1980-07-22 JP JP10006780A patent/JPS5725938A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS466349Y1 (en) * | 1967-03-14 | 1971-03-05 |
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