JPS6426655A - Porous film and production thereof - Google Patents

Porous film and production thereof

Info

Publication number
JPS6426655A
JPS6426655A JP63103871A JP10387188A JPS6426655A JP S6426655 A JPS6426655 A JP S6426655A JP 63103871 A JP63103871 A JP 63103871A JP 10387188 A JP10387188 A JP 10387188A JP S6426655 A JPS6426655 A JP S6426655A
Authority
JP
Japan
Prior art keywords
film
component
melting point
polymer
100pts
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
JP63103871A
Other languages
Japanese (ja)
Other versions
JPH0577694B2 (en
Inventor
Hisashi Koshiro
Hisaya Yamaguchi
Kazuhiro Hada
Tomoji Mizutani
Yukio Wakuta
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.)
Kohjin Holdings Co Ltd
Kohjin Co
Original Assignee
Kohjin Holdings Co Ltd
Kohjin Co
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 Kohjin Holdings Co Ltd, Kohjin Co filed Critical Kohjin Holdings Co Ltd
Priority to JP63103871A priority Critical patent/JPS6426655A/en
Publication of JPS6426655A publication Critical patent/JPS6426655A/en
Publication of JPH0577694B2 publication Critical patent/JPH0577694B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To obtain a porous film having excellent drawability and vent holes, by blending a polyolefin based polymer with a thermoplastic polyester polymer using specific heating and kneading condition, forming a film and drawing the obtained film. CONSTITUTION:A polymer blend consisting of (A) 100pts.wt. polyolefin based polymer, (B) 0-50pts.wt. polyester polyether type thermoplastic elastomer and (C) a particulate thermoplastic polyester polymer having <=0.5 intrinsic viscosity in an amount of 25-90pts.wt. based on 100pts.wt. total amount of the components (A) and (B) is heated and melted in an extruder above the melting point of the component (C) at >=200/sec shearing rate while being cooled so as to provide a temperature range below the crystallization temperature of the component (C) and above the melting point of the component (A), cooled below the crystallization temperature of the component (C), formed into a film above the melting point of the component (A) and quenched to provide an undrawn film, which is then drawn to afford the aimed film having pores with 0.1-100mu average pore diameter, >=200g/m<2>.24hr moisture permeability and >=80cmAq water resistant pressure.
JP63103871A 1987-04-30 1988-04-28 Porous film and production thereof Granted JPS6426655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63103871A JPS6426655A (en) 1987-04-30 1988-04-28 Porous film and production thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10452487 1987-04-30
JP63103871A JPS6426655A (en) 1987-04-30 1988-04-28 Porous film and production thereof

Publications (2)

Publication Number Publication Date
JPS6426655A true JPS6426655A (en) 1989-01-27
JPH0577694B2 JPH0577694B2 (en) 1993-10-27

Family

ID=14382880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63103871A Granted JPS6426655A (en) 1987-04-30 1988-04-28 Porous film and production thereof

Country Status (2)

Country Link
JP (1) JPS6426655A (en)
ZA (1) ZA883064B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434726A (en) * 1987-07-30 1989-02-06 Tokuyama Soda Kk Fine porous polyolefin film and its manufacture
WO1992003356A1 (en) * 1990-08-13 1992-03-05 Kohjin Co., Ltd. Food packaging bag
JP2012195928A (en) * 2011-03-03 2012-10-11 Nitto Denko Corp Waterproof sound-transmitting film and electrical product
US9636616B2 (en) 2010-06-16 2017-05-02 Nitto Denko Corporation Water-proof air-permeable filter and use of the same
US9855530B2 (en) 2010-06-16 2018-01-02 Nitto Denko Corporation Water-proof air-permeable filter and use of the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873460A (en) * 1971-12-30 1973-10-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873460A (en) * 1971-12-30 1973-10-03

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434726A (en) * 1987-07-30 1989-02-06 Tokuyama Soda Kk Fine porous polyolefin film and its manufacture
WO1992003356A1 (en) * 1990-08-13 1992-03-05 Kohjin Co., Ltd. Food packaging bag
US5376392A (en) * 1990-08-13 1994-12-27 Kohjin Co., Ltd. Food packaging bag
US9636616B2 (en) 2010-06-16 2017-05-02 Nitto Denko Corporation Water-proof air-permeable filter and use of the same
US9855530B2 (en) 2010-06-16 2018-01-02 Nitto Denko Corporation Water-proof air-permeable filter and use of the same
JP2012195928A (en) * 2011-03-03 2012-10-11 Nitto Denko Corp Waterproof sound-transmitting film and electrical product
KR20140010124A (en) * 2011-03-03 2014-01-23 닛토덴코 가부시키가이샤 Waterproof sound-transmitting film and electrical product
US9171535B2 (en) 2011-03-03 2015-10-27 Nitto Denko Corporation Waterproof sound-transmitting membrane and electrical product

Also Published As

Publication number Publication date
JPH0577694B2 (en) 1993-10-27
ZA883064B (en) 1988-11-07

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Legal Events

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