JPS6449619A - Manufacture of holey film - Google Patents

Manufacture of holey film

Info

Publication number
JPS6449619A
JPS6449619A JP62204993A JP20499387A JPS6449619A JP S6449619 A JPS6449619 A JP S6449619A JP 62204993 A JP62204993 A JP 62204993A JP 20499387 A JP20499387 A JP 20499387A JP S6449619 A JPS6449619 A JP S6449619A
Authority
JP
Japan
Prior art keywords
polyolefin
filler
weight
parts
film
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
JP62204993A
Other languages
Japanese (ja)
Inventor
Michiyasu Ito
Toshiyuki Ishii
Hideji Matsumura
Hajime Mutsuka
Tae Tanaka
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 Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP62204993A priority Critical patent/JPS6449619A/en
Priority to US07/234,106 priority patent/US4978486A/en
Publication of JPS6449619A publication Critical patent/JPS6449619A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To manufacture holey film with uniform fine holes at high productivity and at low cost by a method wherein resin film containing polyolefin and filler is stretched and heat-embossed, and at the same time taken off at a speed, which is higher than the peripheral speed of an embossing roll. CONSTITUTION:Resin film, which is formed by adding 20-400 parts by weight of filler per 100 parts by weight of polyolefin, is stretched at least uniaxially and, after that, heat-embossed with both an embossing roll 1 having a large number of projected knobs and pinch rolls 8 for pressing the knobs and, at the same time, a film 6 is taken off at a speed, which is higher than at least the peripheral speed of the embossing roll 1. As the polyolefin film, polypropylene excellent in stretchability, high density polyethylene and linear low density polyethylene (LLDPE) are employed. As the favorable filler, inorganic filler such as calcium carbonate, talc, clay, silica or the like is employed. As loadings, 20-400 parts by weight of the filler is added to 100 parts by weight of the polyolefin. The temperature of the embossing roll 1 is selected in response to the working speed. For example, when LLDPE is used as polyolefin, the preferable temperature of the roll 1 is 110 deg.C when the take-off is 60m/min and 115 deg.C when 100m/min.
JP62204993A 1987-08-20 1987-08-20 Manufacture of holey film Pending JPS6449619A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62204993A JPS6449619A (en) 1987-08-20 1987-08-20 Manufacture of holey film
US07/234,106 US4978486A (en) 1987-08-20 1988-08-19 Method for preparing perforated film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62204993A JPS6449619A (en) 1987-08-20 1987-08-20 Manufacture of holey film

Publications (1)

Publication Number Publication Date
JPS6449619A true JPS6449619A (en) 1989-02-27

Family

ID=16499689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62204993A Pending JPS6449619A (en) 1987-08-20 1987-08-20 Manufacture of holey film

Country Status (1)

Country Link
JP (1) JPS6449619A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6776947B2 (en) * 1996-07-31 2004-08-17 Exxonmobil Chemical Company Process of adjusting WVTR of polyolefin film
JP2008525210A (en) * 2004-12-23 2008-07-17 ゴットリープ ビンダー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンデイトゲゼルシャフト Method for producing a plastic support web having an improved melt flow index (MFI)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6776947B2 (en) * 1996-07-31 2004-08-17 Exxonmobil Chemical Company Process of adjusting WVTR of polyolefin film
JP2008525210A (en) * 2004-12-23 2008-07-17 ゴットリープ ビンダー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンデイトゲゼルシャフト Method for producing a plastic support web having an improved melt flow index (MFI)
JP4920598B2 (en) * 2004-12-23 2012-04-18 ゴットリープ ビンダー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンデイトゲゼルシャフト Method for producing a plastic support web having an improved melt flow index (MFI)

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