JPS6434726A - Fine porous polyolefin film and its manufacture - Google Patents

Fine porous polyolefin film and its manufacture

Info

Publication number
JPS6434726A
JPS6434726A JP18890187A JP18890187A JPS6434726A JP S6434726 A JPS6434726 A JP S6434726A JP 18890187 A JP18890187 A JP 18890187A JP 18890187 A JP18890187 A JP 18890187A JP S6434726 A JPS6434726 A JP S6434726A
Authority
JP
Japan
Prior art keywords
synthetic resin
diameter
polyolefin
fine
5mum
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
Application number
JP18890187A
Other languages
Japanese (ja)
Other versions
JPH0541657B2 (en
Inventor
Kuniya Nago
Shunichi Nakamura
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.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
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 Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP18890187A priority Critical patent/JPS6434726A/en
Publication of JPS6434726A publication Critical patent/JPS6434726A/en
Publication of JPH0541657B2 publication Critical patent/JPH0541657B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To obtain a fine porous film having small hole-diameter and moreover large porosity by using a specified synthetic resin particles. CONSTITUTION:This porous film is composed of polyolefin and the synthetic resin particle which is dispersed in the polyolefin and has the softening temperature or decomposing temperature higher than the forming temperature of the polyolefin, and average particle diameter of 0.01-5mum. The film has the network composed of the communication hole having the maximum diameter of the small hole of at most 5mum, and it has the porosity of 30-98% and is molecularly orientated by drawing. When the average diameter of the synthetic resin particle is out of the range of 0.01-5mum, the fine porosity is not able to be obtained or only the porous film with large diameter of maximum fine hole is obtained. When the particle diameter distribution of the synthetic resin particle is in the narrower range, the more uniform fine holes may be obtained. The compounding amount of the synthetic resin particle is preferably in the range of 20-80wt.% of the total amount of polyolefin and synthetic resin.
JP18890187A 1987-07-30 1987-07-30 Fine porous polyolefin film and its manufacture Granted JPS6434726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18890187A JPS6434726A (en) 1987-07-30 1987-07-30 Fine porous polyolefin film and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18890187A JPS6434726A (en) 1987-07-30 1987-07-30 Fine porous polyolefin film and its manufacture

Publications (2)

Publication Number Publication Date
JPS6434726A true JPS6434726A (en) 1989-02-06
JPH0541657B2 JPH0541657B2 (en) 1993-06-24

Family

ID=16231862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18890187A Granted JPS6434726A (en) 1987-07-30 1987-07-30 Fine porous polyolefin film and its manufacture

Country Status (1)

Country Link
JP (1) JPS6434726A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015072931A (en) * 2012-08-30 2015-04-16 Dic株式会社 Microporous film, method for manufacturing the same, battery separator, and resin composition for nonaqueous electrolyte secondary battery separators
CN107599435A (en) * 2017-09-28 2018-01-19 中国科学技术大学 A kind of MIcroporous polyolefin film and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116537A (en) * 1974-02-20 1975-09-11
JPS58198536A (en) * 1982-05-14 1983-11-18 Sekisui Chem Co Ltd Production of porous film having excellent air permeability
JPS6426655A (en) * 1987-04-30 1989-01-27 Kohjin Co Porous film and production thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116537A (en) * 1974-02-20 1975-09-11
JPS58198536A (en) * 1982-05-14 1983-11-18 Sekisui Chem Co Ltd Production of porous film having excellent air permeability
JPS6426655A (en) * 1987-04-30 1989-01-27 Kohjin Co Porous film and production thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015072931A (en) * 2012-08-30 2015-04-16 Dic株式会社 Microporous film, method for manufacturing the same, battery separator, and resin composition for nonaqueous electrolyte secondary battery separators
CN107599435A (en) * 2017-09-28 2018-01-19 中国科学技术大学 A kind of MIcroporous polyolefin film and preparation method thereof

Also Published As

Publication number Publication date
JPH0541657B2 (en) 1993-06-24

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees