JPS5722025A - Cross-linking method for peroxide of expanded sheet - Google Patents
Cross-linking method for peroxide of expanded sheetInfo
- Publication number
- JPS5722025A JPS5722025A JP9557580A JP9557580A JPS5722025A JP S5722025 A JPS5722025 A JP S5722025A JP 9557580 A JP9557580 A JP 9557580A JP 9557580 A JP9557580 A JP 9557580A JP S5722025 A JPS5722025 A JP S5722025A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- peroxide
- cross
- linking
- foaming
- 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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To obtain an expanded sheet excellent in its physical property, workability and economy, by tightly squeezing an olefinic resin sheet, in which a peroxide and a foaming agent contained in it are not decomposed or reacted yet, between two endless belts, and carrying the sheet as such while heating it for cross-linking and foaming reactions.
CONSTITUTION: 100P HR of an olefinic resin (e.g. PF, PP or the like) is mixed with a peroxide (e.g. dicumyl peroxide or the like), a cross-linking assistant (e.g. trimethylolpropane trimethacrylate or the like) and a foaming agent (e.g. azodicarboxylic amide or the like), each being 0.5W5P HR, A filler, a silane agent or a lubricant may be optionally added into the mixture. A sheet is prepared from this mixture under the condition that the peroxide and the foaming agent are not decomposed or reacted. The sheet is tightly squeezed between two endless belts and carried in a state not to come in contact with the air. In this state, the sheet is heated to do cross-linking and foaming reactions. Thereafter, the treated sheet is released from the space between the endless belts, and cooled between rolls. Thus, a high cross-linking rate can be esily and continuously attained, and an expanded having a foaming magnification of 2W15 fold can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9557580A JPS5722025A (en) | 1980-07-15 | 1980-07-15 | Cross-linking method for peroxide of expanded sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9557580A JPS5722025A (en) | 1980-07-15 | 1980-07-15 | Cross-linking method for peroxide of expanded sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5722025A true JPS5722025A (en) | 1982-02-04 |
Family
ID=14141382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9557580A Pending JPS5722025A (en) | 1980-07-15 | 1980-07-15 | Cross-linking method for peroxide of expanded sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5722025A (en) |
-
1980
- 1980-07-15 JP JP9557580A patent/JPS5722025A/en active Pending
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