JPS5411173A - Manufacture of synthetic resin foam having density gradient - Google Patents
Manufacture of synthetic resin foam having density gradientInfo
- Publication number
- JPS5411173A JPS5411173A JP7733677A JP7733677A JPS5411173A JP S5411173 A JPS5411173 A JP S5411173A JP 7733677 A JP7733677 A JP 7733677A JP 7733677 A JP7733677 A JP 7733677A JP S5411173 A JPS5411173 A JP S5411173A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin foam
- manufacture
- density gradient
- pependicular
- 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
- Filtering Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
PURPOSE: To obtain the title foam usable for dust removing filters, etc., wherein the density decreases from one side to another, by hot-pressing a synthetic resin foam plate from both sides in the thichness direction, followed by cutting in the direction pependicular to the thickness direction.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7733677A JPS5411173A (en) | 1977-06-29 | 1977-06-29 | Manufacture of synthetic resin foam having density gradient |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7733677A JPS5411173A (en) | 1977-06-29 | 1977-06-29 | Manufacture of synthetic resin foam having density gradient |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5411173A true JPS5411173A (en) | 1979-01-27 |
JPS574485B2 JPS574485B2 (en) | 1982-01-26 |
Family
ID=13631072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7733677A Granted JPS5411173A (en) | 1977-06-29 | 1977-06-29 | Manufacture of synthetic resin foam having density gradient |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5411173A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771618A (en) * | 1980-10-18 | 1982-05-04 | Bridgestone Corp | Filter |
JP2018197835A (en) * | 2017-05-25 | 2018-12-13 | 富士ゼロックス株式会社 | Developing device and image forming apparatus |
JP2020181047A (en) * | 2019-04-24 | 2020-11-05 | 名古屋油化株式会社 | Sound absorber and manufacturing method of the same |
EP4198635A1 (en) * | 2021-12-16 | 2023-06-21 | Ricoh Company, Ltd. | Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus |
-
1977
- 1977-06-29 JP JP7733677A patent/JPS5411173A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771618A (en) * | 1980-10-18 | 1982-05-04 | Bridgestone Corp | Filter |
JP2018197835A (en) * | 2017-05-25 | 2018-12-13 | 富士ゼロックス株式会社 | Developing device and image forming apparatus |
JP2020181047A (en) * | 2019-04-24 | 2020-11-05 | 名古屋油化株式会社 | Sound absorber and manufacturing method of the same |
EP4198635A1 (en) * | 2021-12-16 | 2023-06-21 | Ricoh Company, Ltd. | Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus |
US11934145B2 (en) | 2021-12-16 | 2024-03-19 | Ricoh Company, Ltd. | Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS574485B2 (en) | 1982-01-26 |
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