JPS55127121A - Preparing method of filter material having density gradient - Google Patents
Preparing method of filter material having density gradientInfo
- Publication number
- JPS55127121A JPS55127121A JP3321779A JP3321779A JPS55127121A JP S55127121 A JPS55127121 A JP S55127121A JP 3321779 A JP3321779 A JP 3321779A JP 3321779 A JP3321779 A JP 3321779A JP S55127121 A JPS55127121 A JP S55127121A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- filter material
- density gradient
- needle
- 5w30mm
- 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
- Filtering Materials (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3321779A JPS55127121A (en) | 1979-03-23 | 1979-03-23 | Preparing method of filter material having density gradient |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3321779A JPS55127121A (en) | 1979-03-23 | 1979-03-23 | Preparing method of filter material having density gradient |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55127121A true JPS55127121A (en) | 1980-10-01 |
Family
ID=12380272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3321779A Pending JPS55127121A (en) | 1979-03-23 | 1979-03-23 | Preparing method of filter material having density gradient |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55127121A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5171339A (en) * | 1991-11-07 | 1992-12-15 | E. I. Du Pont De Nemours And Company | Filter bag for hot gases |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031476A (ja) * | 1973-07-20 | 1975-03-27 | ||
JPS52152662A (en) * | 1976-06-14 | 1977-12-19 | Matsushita Electric Ind Co Ltd | Filter for vacuum cleaner and like |
-
1979
- 1979-03-23 JP JP3321779A patent/JPS55127121A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031476A (ja) * | 1973-07-20 | 1975-03-27 | ||
JPS52152662A (en) * | 1976-06-14 | 1977-12-19 | Matsushita Electric Ind Co Ltd | Filter for vacuum cleaner and like |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5171339A (en) * | 1991-11-07 | 1992-12-15 | E. I. Du Pont De Nemours And Company | Filter bag for hot gases |
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