JPS5466498A - Polypropylene laminated paper for insulation - Google Patents
Polypropylene laminated paper for insulationInfo
- Publication number
- JPS5466498A JPS5466498A JP13225877A JP13225877A JPS5466498A JP S5466498 A JPS5466498 A JP S5466498A JP 13225877 A JP13225877 A JP 13225877A JP 13225877 A JP13225877 A JP 13225877A JP S5466498 A JPS5466498 A JP S5466498A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- insulating oil
- thickness
- polypropylene film
- swelling
- 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
- Organic Insulating Materials (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
PURPOSE: To prevent swelling by insulating oil and also to reduce the increase of thickness by giving uneven surface to polypropylene-laminated paper comprising a fiber paper and a polypropylene film layer.
CONSTITUTION: An electrically insulated laminate paper is obtained by integrally adhering a polypropylene film whose surface is provided with an uneven surface by an embossing processing with a fiber paper (e.g., a low density kraft paper. The uneven form is made so as to be given on the surface of polypropylene film which is on the side of no contact with the fiber paper, by a method in which the adhesion of both fiber paper and polypropylene film is made with an uneven-surfaced roll, for example. Since this laminate paper is greatly reduced its thickness by the early drying process, the final augumentation of thickness due to the swelling of insulating oil is remarkably small even if the thickness is increased by swelling by insulating oil. Thus, it is possible to keep the passing of insulating oil better and also to prevent the occurrence of wrinkles.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13225877A JPS5466498A (en) | 1977-11-04 | 1977-11-04 | Polypropylene laminated paper for insulation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13225877A JPS5466498A (en) | 1977-11-04 | 1977-11-04 | Polypropylene laminated paper for insulation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5466498A true JPS5466498A (en) | 1979-05-29 |
Family
ID=15077060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13225877A Pending JPS5466498A (en) | 1977-11-04 | 1977-11-04 | Polypropylene laminated paper for insulation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466498A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57174811A (en) * | 1981-04-20 | 1982-10-27 | Fujikura Ltd | Laminated electric insulator |
EP0843320A3 (en) * | 1996-11-18 | 1998-12-09 | Tomoegawa Paper Co. Ltd. | Electrical insulating laminated paper, process for producing the same and oil-impregnated power cable containing the same |
-
1977
- 1977-11-04 JP JP13225877A patent/JPS5466498A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57174811A (en) * | 1981-04-20 | 1982-10-27 | Fujikura Ltd | Laminated electric insulator |
EP0843320A3 (en) * | 1996-11-18 | 1998-12-09 | Tomoegawa Paper Co. Ltd. | Electrical insulating laminated paper, process for producing the same and oil-impregnated power cable containing the same |
US6207261B1 (en) | 1996-11-18 | 2001-03-27 | Tomoegawa Paper Co. | Electrical insulating laminated paper, process for producing the same oil-impregnated power cable containing the same |
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