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Title:
LAMINATED FILM AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2003103734
Kind Code:
A
Abstract:

To provide a laminated film which shows superb hygienic quantities, high water resistance, high alkalinity resistance, coating film adhesive and excellent heat sealing characteristics.

This laminated film has a layer composed of a polyolefin resin with a thickness of 0.01 to 10 μm formed on at least one of the sides of a thermoplastic resin film and is characterized in that an emulsifier or a chemical compound having a protecting colloidal action is not substantially included in a polyolefin resin layer. The polyolefin resin is a copolymer composed of an unsaturated carboxylic acid or its anhydride (A1), an ethylene hydrocarbon (A2) and at least one kind of chemical compounds (A3) selected from I-IV chemical compounds. In addition, the mass ratio of the constituent components (A1) to (A3) satisfies the formulae (1): 0.01≤(A1)/{(A1)+(A2)+(A3)}×100<5 (1) and (2): (A2)/(A3)=55/45 to 99/1 (2).


Inventors:
SHIBA YOSHITO
OKAMOTO MASASHI
ONISHI HAYAMI
Application Number:
JP2001296881A
Publication Date:
April 09, 2003
Filing Date:
September 27, 2001
Export Citation:
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Assignee:
UNITIKA LTD
International Classes:
C08J7/04; B32B27/32; (IPC1-7): B32B27/32; C08J7/04
Domestic Patent References:
JP2001191460A2001-07-17
JP2001049197A2001-02-20
JPH1158655A1999-03-02