Invention Grant
- Patent Title: Decorative film for insert molding, method for manufacturing decorative film for insert molding, and method for manufacturing resin molded product
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Application No.: US18552757Application Date: 2022-02-09
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Publication No.: US12103282B2Publication Date: 2024-10-01
- Inventor: Michiyasu Okuda , Yusuke Ueno , Shintaro Kuwasaka
- Applicant: NISSHA CO., LTD.
- Applicant Address: JP Kyoto
- Assignee: NISSHA CO., LTD
- Current Assignee: NISSHA CO., LTD
- Current Assignee Address: JP Kyoto
- Agency: Alleman Hall & Tuttle LLP
- Priority: JP 21054945 2021.03.29
- International Application: PCT/JP2022/005083 2022.02.09
- International Announcement: WO2022/209328A 2022.10.06
- Date entered country: 2023-09-27
- Main IPC: B60R13/02
- IPC: B60R13/02 ; B29C45/14 ; B32B7/12 ; B32B27/08 ; B32B27/30 ; B32B27/36

Abstract:
A decorative film for insert molding includes a gravure-printed graphic layer and a light-transmissive patterned layer and has high dimensional accuracy and delicate and rich tone expression. A multilayer film includes first and second layers containing an acrylic-based resin, and a polycarbonate resin layer located between the first and second layers and containing a polycarbonate-based resin. The multilayer film is transmissive to visible light. A first gravure print layer is located on a first main surface of the multilayer film, includes a first graphic layer, and is transmissive. A backer film contains a polycarbonate-based resin and is transmissive. The first graphic layer includes a first image at a predetermined position in a three-dimensional shape of a decorative film formed in the three-dimensional shape. A patterned layer includes a pattern patterned to allow visible light to pass through the first image at the predetermined position in the three-dimensional shape.
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