JPS57153071A - Gasket - Google Patents
GasketInfo
- Publication number
- JPS57153071A JPS57153071A JP4015381A JP4015381A JPS57153071A JP S57153071 A JPS57153071 A JP S57153071A JP 4015381 A JP4015381 A JP 4015381A JP 4015381 A JP4015381 A JP 4015381A JP S57153071 A JPS57153071 A JP S57153071A
- Authority
- JP
- Japan
- Prior art keywords
- water
- gasket
- raw material
- fiber material
- fiber
- 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.)
- Granted
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
Abstract
PURPOSE: To provide a gasket that takes full advantage of the characteristics of a fiber material and a rubber material and has an excellent function of preventing water leakage from a contact surface even under a small clamping pressure, by kneading a raw material comprising the fiber material and rubber material with a water-swellable material and then vulcanizing and forming the compound into a sheet form.
CONSTITUTION: A raw material for gasket comprising 50W90wt.% fiber material and 10W50wt.% rubber material is blended with 1W30wt.% water-insoluble, water-swellable material, based on the weight of the above-mentioned raw material. The resulting mixture is kneaded and then vulcanized and formed into a sheet. When the amount of the fiber material in the raw material is less than 50%, the tensile strength and heat resistance of the gasket are lowered. When it exceeds 90%, the sealing properties of the gasket are lowered. Therefore it is preferable to select the mixing ratio of the fiber material and rubber material within the above-mentioned range. The water-swellable material to be used is a hydrophilic and water-insoluble polymeric substance containing a nonionic hydrophilic group, e.g., a copolymer of acrylic acid or its salt with divinylbenzene.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4015381A JPS5920705B2 (en) | 1981-03-19 | 1981-03-19 | gasket |
GB8207793A GB2101621B (en) | 1981-03-19 | 1982-03-17 | Gasket sheets |
DE19823210176 DE3210176A1 (en) | 1981-03-19 | 1982-03-19 | SEALING PLATE |
US06/573,804 US4546033A (en) | 1981-03-19 | 1984-01-25 | Gasket sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4015381A JPS5920705B2 (en) | 1981-03-19 | 1981-03-19 | gasket |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57153071A true JPS57153071A (en) | 1982-09-21 |
JPS5920705B2 JPS5920705B2 (en) | 1984-05-15 |
Family
ID=12572816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4015381A Expired JPS5920705B2 (en) | 1981-03-19 | 1981-03-19 | gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5920705B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215379A (en) * | 1983-05-23 | 1984-12-05 | Nippon Pillar Packing Co Ltd | Gasket |
JPH08319473A (en) * | 1995-05-26 | 1996-12-03 | Nippon Valqua Ind Ltd | Joint sheet |
-
1981
- 1981-03-19 JP JP4015381A patent/JPS5920705B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215379A (en) * | 1983-05-23 | 1984-12-05 | Nippon Pillar Packing Co Ltd | Gasket |
JPH0261994B2 (en) * | 1983-05-23 | 1990-12-21 | Nippon Pillar Packing | |
JPH08319473A (en) * | 1995-05-26 | 1996-12-03 | Nippon Valqua Ind Ltd | Joint sheet |
Also Published As
Publication number | Publication date |
---|---|
JPS5920705B2 (en) | 1984-05-15 |
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