JPS5777527A - Manufacture of electrically insulating paper - Google Patents
Manufacture of electrically insulating paperInfo
- Publication number
- JPS5777527A JPS5777527A JP15443580A JP15443580A JPS5777527A JP S5777527 A JPS5777527 A JP S5777527A JP 15443580 A JP15443580 A JP 15443580A JP 15443580 A JP15443580 A JP 15443580A JP S5777527 A JPS5777527 A JP S5777527A
- Authority
- JP
- Japan
- Prior art keywords
- polyolefine
- sheet
- paper
- electrically insulating
- insulating paper
- 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
Abstract
PURPOSE: To improve the breakdown strength of an electrically insulating paper, by sandwitching a polyolefine sheet between two sheets of paper comprising polyolefine fibers and kraft pulp, and heating them under pressure to thermoweld the polyolefine boundaries.
CONSTITUTION: The highly airtight sheet 1 is laminated between the paper sheets 2 containing polyolefine. The highly airtight sheet 1 consists of a polyolefine film or a sheet of unwoven fabric of polyolefine fibers. The paper sheet 2 is prepared by mixing for example polyolefine fibers having a fiber length in the order of 1.5mm with kraft pulp. Its airtightness is selected to be at least 10 gareh sec/100cc. The highly airtight sheet 1 and the paper sheets 2 are monolitheically thermowelded under pressure. Thus, the electrically insulating paper the breakdown strength of which is improved can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15443580A JPS5777527A (en) | 1980-10-31 | 1980-10-31 | Manufacture of electrically insulating paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15443580A JPS5777527A (en) | 1980-10-31 | 1980-10-31 | Manufacture of electrically insulating paper |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5777527A true JPS5777527A (en) | 1982-05-14 |
Family
ID=15584122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15443580A Pending JPS5777527A (en) | 1980-10-31 | 1980-10-31 | Manufacture of electrically insulating paper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5777527A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05628U (en) * | 1991-06-14 | 1993-01-08 | 十條商事株式会社 | Currency processing |
JP2007040046A (en) * | 2005-08-05 | 2007-02-15 | Asahi Glass Matex Co Ltd | Roof material |
-
1980
- 1980-10-31 JP JP15443580A patent/JPS5777527A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05628U (en) * | 1991-06-14 | 1993-01-08 | 十條商事株式会社 | Currency processing |
JP2007040046A (en) * | 2005-08-05 | 2007-02-15 | Asahi Glass Matex Co Ltd | Roof material |
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