JPS55127121A - Preparing method of filter material having density gradient - Google Patents

Preparing method of filter material having density gradient

Info

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
Application number
JP3321779A
Other languages
English (en)
Inventor
Korenori Kobayashi
Noriji Muraoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP3321779A priority Critical patent/JPS55127121A/ja
Publication of JPS55127121A publication Critical patent/JPS55127121A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Filtering Materials (AREA)
JP3321779A 1979-03-23 1979-03-23 Preparing method of filter material having density gradient Pending JPS55127121A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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