Invention Grant
US09431560B2 Polyvinyl acetal resin film and multilayer structure articles using the same
有权
聚乙烯醇缩醛树脂薄膜和使用其的多层结构制品
- Patent Title: Polyvinyl acetal resin film and multilayer structure articles using the same
- Patent Title (中): 聚乙烯醇缩醛树脂薄膜和使用其的多层结构制品
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Application No.: US14008745Application Date: 2012-03-29
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Publication No.: US09431560B2Publication Date: 2016-08-30
- Inventor: Hidemasa Oda , Takashi Mukose , Makio Tokoh
- Applicant: Hidemasa Oda , Takashi Mukose , Makio Tokoh
- Applicant Address: JP Kurashiki-shi
- Assignee: KURARAY CO., LTD.
- Current Assignee: KURARAY CO., LTD.
- Current Assignee Address: JP Kurashiki-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P
- Priority: JP2011-072090 20110329
- International Application: PCT/JP2012/058406 WO 20120329
- International Announcement: WO2012/133668 WO 20121004
- Main IPC: H01L31/048
- IPC: H01L31/048 ; B32B17/10 ; B29C47/88 ; B29C47/92 ; C08J5/18 ; B29C47/00

Abstract:
An object of the present invention is to provide a film that is used as one layer of a multilayer structure articles such as a laminated glass, and a solar cell module, and prevents the intrusion of bubbles and the generation of unfilled portions at the edge portions of the film; and a multilayer structure articles obtained with the use of the film. A polyvinyl acetal resin film, having a thickness distribution in the width direction of 10% or less, and a volatile matter content of 1.0 mass % or less, in which as to a portion of 5% of the total width inside from each of both edges in the width direction, when each portion is heated at 150° C. for 30 minutes, the larger value of the heat shrinkage in the flow direction that is parallel to the film and perpendicular to the width direction is referred to as heat shrinkage MD1, and the other value is referred to as heat shrinkage MD2, and when central portion in the width direction of the film is heated at 150° C. for 30 minutes, the heat shrinkage in the flow direction that is parallel to the film and perpendicular to the width direction is referred to as heat shrinkage MD3, all the heat shrinkage MD1, heat shrinkage MD2, and heat shrinkage MD3 are 3 to 20%.
Public/Granted literature
- US20140020759A1 POLYVINYL ACETAL RESIN FILM AND MULTILAYER STRUCTURE ARTICLES USING THE SAME Public/Granted day:2014-01-23
Information query
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