JPS5796824A - Manufacture of laminated sheet - Google Patents
Manufacture of laminated sheetInfo
- Publication number
- JPS5796824A JPS5796824A JP55172885A JP17288580A JPS5796824A JP S5796824 A JPS5796824 A JP S5796824A JP 55172885 A JP55172885 A JP 55172885A JP 17288580 A JP17288580 A JP 17288580A JP S5796824 A JPS5796824 A JP S5796824A
- Authority
- JP
- Japan
- Prior art keywords
- laminated sheet
- laminated
- pressing
- high temperatures
- curing
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000002655 kraft paper Substances 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Laminated Bodies (AREA)
Abstract
PURPOSE: To form a laminated sheet that contains volatile matters less and is excellent in the insulating properties and resistance to heat by a method of forming a laminated sheet by heating and pressing laminated prepregs, in which method after the curing, the product is allowed to stand at high temperatures under no load.
CONSTITUTION: For example, a plurality of prepregs of kraft paper impregnated with a phenol resin are laminated, and are heated and pressed at a temperature of about 170°C and a pressure of about 140kg/cm2, and after the completion of curing of the resin, while the laminated sheet is still at high temperatures, the pressure is relirveed, and then it is allowed to cool. During this period the volatile constitutents remained in the laminated sheet can evaporate to be removed. In a case cavities occur in the prepreg due to destruction of bonding between the layers when the volatile constituents evaporate, the prepreg will be restored by pressing it again at high temperatures after the relief of the first pressing.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55172885A JPS5796824A (en) | 1980-12-08 | 1980-12-08 | Manufacture of laminated sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55172885A JPS5796824A (en) | 1980-12-08 | 1980-12-08 | Manufacture of laminated sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5796824A true JPS5796824A (en) | 1982-06-16 |
Family
ID=15950119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55172885A Pending JPS5796824A (en) | 1980-12-08 | 1980-12-08 | Manufacture of laminated sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5796824A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111233A (en) * | 1984-06-28 | 1986-01-18 | Sumitomo Bakelite Co Ltd | Manufacture of laminate product |
-
1980
- 1980-12-08 JP JP55172885A patent/JPS5796824A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111233A (en) * | 1984-06-28 | 1986-01-18 | Sumitomo Bakelite Co Ltd | Manufacture of laminate product |
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