Title:
MULTILAYER FILM AND ARTICLE
Document Type and Number:
WIPO Patent Application WO/2024/043243
Kind Code:
A1
Abstract:
The present invention provides a multilayer film which offers optical characteristics tailored to the needs regardless of the gloss and the surface roughness of an adherend, and which has excellent durability even if the moisture resistance of the adherend is unfavorable. The multilayer film sequentially comprises a protective film, a coating layer, a resin base material and an adhesive layer; and the protective film and the coating layer are adjacent to each other. If the protective film is separated from the multilayer film at a predetermined rate so as to obtain an multilayer film L, the surface roughness Rac of a surface on the reverse side of the coating layer of the multilayer film L from the resin base material and the surface roughness Rap on the coating layer side surface of the separated protective film satisfy a specific formula; the surface free energy γac of the surface on the reverse side of the coating layer of the multilayer film L from the resin base material and the surface free energy γap on the coating layer side surface of the separated protective film satisfy a specific formula; the Martens hardness of the coating layer of the multilayer film L satisfies a specific formula; the gloss G(IL) at 60° of the multilayer film L and the gloss G(IC) at 60° of the multilayer film L in a composite body of the multilayer film L and the adherend satisfy a specific formula; and the gloss G(A) at 60° of the multilayer film L in the composite body after a wet heat test and the gloss G(IL) at 60° satisfy a specific formula.
Inventors:
MIYATA RYOHEI (JP)
YAMAZAKI TETSUYA (JP)
NAKAMURA IKUFUMI (JP)
YAMAGUCHI MIREI (JP)
HOSOKAWA TAKEKI (JP)
YAMAZAKI TETSUYA (JP)
NAKAMURA IKUFUMI (JP)
YAMAGUCHI MIREI (JP)
HOSOKAWA TAKEKI (JP)
Application Number:
PCT/JP2023/030213
Publication Date:
February 29, 2024
Filing Date:
August 22, 2023
Export Citation:
Assignee:
NIPPON PAINT AUTOMOTIVE COATINGS CO LTD (JP)
International Classes:
B32B27/00; B32B7/06
Domestic Patent References:
| WO2019078369A1 | 2019-04-25 |
Foreign References:
| JP2019519410A | 2019-07-11 | |||
| JP2016193494A | 2016-11-17 | |||
| JP2019025739A | 2019-02-21 | |||
| JP2018034488A | 2018-03-08 | |||
| JP2023080848A | 2023-06-09 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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