JPS56157478A - Combined graphite sheet laminated gasket - Google Patents
Combined graphite sheet laminated gasketInfo
- Publication number
- JPS56157478A JPS56157478A JP6117880A JP6117880A JPS56157478A JP S56157478 A JPS56157478 A JP S56157478A JP 6117880 A JP6117880 A JP 6117880A JP 6117880 A JP6117880 A JP 6117880A JP S56157478 A JPS56157478 A JP S56157478A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- sheet
- graphite sheet
- acid
- under pressure
- 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
- Gasket Seals (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
Abstract
PURPOSE: To provide the title gasket which has excellent handling properties, sealing properties and adaptability to the opposing surface, by a construction wherein a graphite sheet having excellent mechanical strength obtd. by molding expanded graphite under pressure, is arranged at the central part, and at least two layers of a low-density graphite sheet are arranged at the outermost layer part.
CONSTITUTION: Natural scaly graphite is treated with a mixed acid of conc. sulfuric acid-conc. nitric acid, washed with water, and then dehydrated to remove excess acid and the acid deposited on the surface of the graphite. The graphite is subjected to an expansion treatment at 600W1,000°C to obtain an expanded graphite which is then molded under pressure to produce a graphite sheet 1 having excellent mechanical strength of 80kg/cm2 or higher. Then the graphite sheet 1 is arranged at the central part. At least two layers of a low-density graphite sheet 2 having a density 0.8W1.4g/cm3 as the outermost layer part are laminated to the graphite sheet 1. The laminate is molded under pressure.
EFFECT: A gasket having good handling properties can be obtd. in which the sheet is not broken and the edge part of the sheet is not damaged during application.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6117880A JPS56157478A (en) | 1980-05-07 | 1980-05-07 | Combined graphite sheet laminated gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6117880A JPS56157478A (en) | 1980-05-07 | 1980-05-07 | Combined graphite sheet laminated gasket |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56157478A true JPS56157478A (en) | 1981-12-04 |
Family
ID=13163635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6117880A Pending JPS56157478A (en) | 1980-05-07 | 1980-05-07 | Combined graphite sheet laminated gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56157478A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07118627A (en) * | 1993-09-06 | 1995-05-09 | Nippon Pillar Packing Co Ltd | Sheet for gasket and its production |
JPH07165470A (en) * | 1993-12-14 | 1995-06-27 | Nippon Pillar Packing Co Ltd | Sealing material made of expanded graphite, its production and sheet for gasket |
CN104235370A (en) * | 2014-07-30 | 2014-12-24 | 苏州通力电气有限公司 | Low-friction-coefficient sealing filling ring |
US20210086474A1 (en) * | 2018-05-03 | 2021-03-25 | Skc Co., Ltd. | Multilayer graphite sheet with excellent electromagnetic shielding capability and thermal conductivity and manufacturing method therefor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5292216A (en) * | 1976-01-30 | 1977-08-03 | Nippon Carbon Co Ltd | Flexible graphite sheet materials |
-
1980
- 1980-05-07 JP JP6117880A patent/JPS56157478A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5292216A (en) * | 1976-01-30 | 1977-08-03 | Nippon Carbon Co Ltd | Flexible graphite sheet materials |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07118627A (en) * | 1993-09-06 | 1995-05-09 | Nippon Pillar Packing Co Ltd | Sheet for gasket and its production |
JPH07165470A (en) * | 1993-12-14 | 1995-06-27 | Nippon Pillar Packing Co Ltd | Sealing material made of expanded graphite, its production and sheet for gasket |
CN104235370A (en) * | 2014-07-30 | 2014-12-24 | 苏州通力电气有限公司 | Low-friction-coefficient sealing filling ring |
CN106051158A (en) * | 2014-07-30 | 2016-10-26 | 丁永新 | Sealing filler ring and production method thereof |
CN106090219A (en) * | 2014-07-30 | 2016-11-09 | 丁永新 | The production method of sealing drilled packing ring |
US20210086474A1 (en) * | 2018-05-03 | 2021-03-25 | Skc Co., Ltd. | Multilayer graphite sheet with excellent electromagnetic shielding capability and thermal conductivity and manufacturing method therefor |
US11745463B2 (en) * | 2018-05-03 | 2023-09-05 | Skc Co., Ltd. | Multilayer graphite sheet with excellent electromagnetic shielding capability and thermal conductivity and manufacturing method therefor |
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