Invention Grant
- Patent Title: Interlayer for laminated glass, laminated glass, production method for embossing roll, and production method for interlayer for laminated glass
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Application No.: US17148069Application Date: 2021-01-13
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Publication No.: US11318718B2Publication Date: 2022-05-03
- Inventor: Kazuhiko Nakayama , Morimasa Omizu , Masaya Kondou
- Applicant: SEKISUI CHEMICAL CO., LTD.
- Applicant Address: JP Osaka
- Assignee: SEKISUI CHEMICAL CO., LTD.
- Current Assignee: SEKISUI CHEMICAL CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2015-081180 20150410
- Main IPC: B32B17/10
- IPC: B32B17/10 ; B24C3/32 ; B24C11/00 ; B29C59/04 ; B32B3/30 ; E06B3/66 ; E06B3/677 ; B23P15/24 ; B29C48/88 ; B24C1/00 ; B24C1/08 ; B29K29/00 ; B60J1/00 ; B60J1/02

Abstract:
The present invention aims to provide an interlayer film for a laminated glass having recesses in the shape of engraved lines on both surfaces to exhibit excellent deaeration properties in production of a laminated glass and suppressing formation of a moire pattern when unwound from a rolled body thereof. The present invention also aims to provide a laminated glass including the interlayer film for a laminated glass, a method for producing an embossing roll suitably used for production of the interlayer film for a laminated glass, and a method for producing the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on both surfaces, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the interlayer film having a glossiness on a surface with the large number of recesses measured in conformity with JIS Z 8741-1997 of higher than 3% or a haze value measured in conformity with JIS K 7105-1981 of 87% or lower.
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