Title:
ADHESIVE FILM AND ADHESIVE LABEL
Document Type and Number:
WIPO Patent Application WO/2023/234189
Kind Code:
A1
Abstract:
Provided are an adhesive film and an adhesive label that have good flatness and excellent adhesiveness, and in which no wrinkles or curls occur in the process of imparting adhesiveness thereto. The adhesive film comprises an adhesive layer and a biaxially oriented laminated polypropylene film including at least a base material layer A and a surface layer B, wherein the biaxially oriented laminated polypropylene film satisfies the following requirements 1) to 6). 1) The thickness of the base material layer A accounts for 70-98% of the thickness of the entirety of the film. 2) The mesopentad fraction of a polypropylene resin forming the base material layer A is 97.0-99.9%. 3) The mesopentad fraction of a polypropylene resin forming the surface layer B is 80.0-96.5%. 4) The plane orientation factor of the film that is measured on the surface-layer-B side is 0.0134 or less. 5) The 150°C thermal shrinkage of the film in the longitudinal direction is 6.0% or less. 6) The 150°C thermal shrinkage of the film in the width direction is 5.0% or less.
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Inventors:
TANEKI KENSUKE (JP)
IMAI TORU (JP)
HORINOUCHI KAZUHITO (JP)
IMAI TORU (JP)
HORINOUCHI KAZUHITO (JP)
Application Number:
PCT/JP2023/019636
Publication Date:
December 07, 2023
Filing Date:
May 26, 2023
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C09J7/29; B32B27/00; B32B27/32; C09J7/24; C09J7/38; C09J133/00; C09J183/04
Foreign References:
| JP2018127620A | 2018-08-16 | |||
| JP2016064654A | 2016-04-28 | |||
| JP2002265892A | 2002-09-18 |
Attorney, Agent or Firm:
USFI PATENT ATTORNEYS INTERNATIONAL OFFICE (JP)
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