Title:
HEAT-SHRINKABLE MULTILAYER FILM, HEAT-SHRINKABLE LABEL, AND BEVERAGE CONTAINER
Document Type and Number:
WIPO Patent Application WO/2021/241562
Kind Code:
A1
Abstract:
The purpose of the present embodiment is to provide a heat-shrinkable multilayer film in which satisfactory interlayer adhesion strength, heat-shrinkability, transparency, film-formability, and film appearance are combined. The present embodiment is a heat-shrinkable multilayer film including at least a first layer comprising a first block copolymer containing a vinyl aromatic hydrocarbon and a conjugated diene, and a second layer comprising a second block copolymer containing a polyester resin, a vinyl aromatic hydrocarbon, and a conjugated diene, wherein the first and second layers are in direct contact with one another, the content of the second block copolymer in the second layer is between 0.1% by mass and 35% by mass inclusive, the mass ratio of the vinyl aromatic hydrocarbon and the conjugated diene in the second block copolymer is 65/35 to 85/15, and the number average molecular weight of the second block copolymer is 5.0×104 to 40.0×104.
Inventors:
YAKUNO HITOMI (JP)
YOSHIDA JUN (JP)
SAWASATO TADASHI (JP)
YOSHIDA JUN (JP)
SAWASATO TADASHI (JP)
Application Number:
PCT/JP2021/019762
Publication Date:
December 02, 2021
Filing Date:
May 25, 2021
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
B32B27/00; B32B27/36; B65D23/00; B65D25/20; B65D65/40; C08F297/04; G09F3/04
Foreign References:
| JP2017213875A | 2017-12-07 | |||
| JP2012210717A | 2012-11-01 | |||
| JP2015179135A | 2015-10-08 | |||
| JP2011056736A | 2011-03-24 | |||
| JPS62124928A | 1987-06-06 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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