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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12053918 B1

PDFFull Text
Date of Patent:
Aug. 06, 2024

Filed:

Jun. 06, 2018

Multilayer film and method for producing same

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Hiroshi Kawakita, Tsukuba, JP;

Katsuei Takahashi, Tsukuba, JP;

Hiromitsu Sasaki, Kamisu, JP;

Assignee:

KURARAY CO., LTD., Okayama, JP;

Attorney:

GREENBLUM & BERNSTEIN, P.L.C.

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
B29C 48/18 (2019.01); B29C 45/14 (2006.01); B29C 48/885 (2019.01); B29C 63/02 (2006.01); B32B 27/08 (2006.01); B29K 23/00 (2006.01); B29K 25/00 (2006.01); B29K 209/06 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/18 (2019.02); B29C 45/14811 (2013.01); B29C 48/885 (2019.02); B29C 63/02 (2013.01); B32B 27/08 (2013.01); B29K 2023/12 (2013.01); B29K 2025/08 (2013.01); B29K 2209/06 (2013.01); B29L 2031/722 (2013.01);
Abstract

The present invention relates to a multilayered film having a high degree of freedom regarding selection of a material and a decoration method, which is not only excellent in handling properties and low-temperature adhesiveness to adherends of various materials but also applicable to decorative molding of every sort in a three-dimensional solid shape, and a method for producing the same. The present invention provides a multilayered film including, as an intermediate layer (X), a thermoplastic resin layer having a bending rigidity of 60 to 30,000 kPa·mm; a layer (Y) composed of a thermoplastic polymer composition on both surfaces of the intermediate layer (X), the thermoplastic polymer composition containing 0 to 50 parts by mass of a polypropylene-based resin (B) based on 100 parts by mass of a thermoplastic elastomer (A) that is a block copolymer containing a polymer block (a1) composed of an aromatic vinyl compound unit and a polymer block (a2) composed of a conjugated diene compound unit; and a decorative layer (Z) closely arranged on the surface of either one of the layers (Y). The present invention also provides a method for producing the multilayered film, including bringing the thermoplastic resin layer (Y) as a surface layer in a molten state into contact with a roll whose surface is made of a hydrophobic resin.

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