Title:
MULTILAYER BIAXIALLY ORIENTED FILM
Document Type and Number:
Japanese Patent JP2018144351
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a film which hardly causes delamination (ply separation) and is excellent in releasability.SOLUTION: A multilayer biaxially oriented film is formed by stacking layer A and layer B, where the layer A is formed of a resin composition containing a 4-methyl-1-pentene polymer (A1) and polypropylene (A2), a content of the 4-methyl-1-pentene polymer (A1) in the layer A is 5 mass% or more and 95 mass% or less with respect to the total mass of the layer A, a content of the polypropylene (A2) is 5 mass% or more and 95 mass% or less with respect to the total mass of the layer A, the 4-methyl-1-pentene polymer (A1) contains 90 mol% to 100 mol% of a constitutional unit derived from the 4-methyl-1-pentene, and a difference between tensile elastic modulus (MA) of the layer A and tensile elastic modulus (MB) of the layer B is 130 MPa or less in both of an MD direction and a TD direction.SELECTED DRAWING: None
Inventors:
TSUGANE YASUHITO
UEKUSA TAKAYUKI
TAMO KATSUMASA
TAKAMINE KENJIRO
UEKUSA TAKAYUKI
TAMO KATSUMASA
TAKAMINE KENJIRO
Application Number:
JP2017041746A
Publication Date:
September 20, 2018
Filing Date:
March 06, 2017
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
B32B27/32; B29C55/12; C08L23/12; C08L23/20
Attorney, Agent or Firm:
Patent corporation ssinpat