公开(公告)号：US20200023620A1

公开(公告)日：2020-01-23

申请号：US16497531

申请日：2018-03-27

Applicant: KURARAY CO., LTD.

Inventor： Koichiro ISOUE ,  Hirotaka YASUDA ,  Jun KOISHIKAWA ,  Uwe KELLER

IPC: B32B17/10 ,  B32B3/14 ,  B32B15/02 ,  B32B15/082 ,  B32B15/20 ,  B32B27/30 ,  B60J1/00 ,  C08J5/18

Abstract: A polyvinyl acetal resin film for laminated glass, a viscosity of toluene/ethanol=1/1 (by mass ratio) solution of a polyvinyl acetal resin in a resin composition constituting the polyvinyl acetal resin film with a concentration of 10% by mass, measured at 30 rpm and 20° C. by using a Brookfield-type (B-type) viscometer, being more than 200 mPa·s, the polyvinyl acetal resin film comprising a plasticizer in an amount of 0 to 20% by mass based on a total mass of the resin composition constituting the polyvinyl acetal resin film, and the polyvinyl acetal resin film having a thickness of 10 to 350 μm.

公开(公告)号：US20200017675A1

公开(公告)日：2020-01-16

申请号：US16497649

申请日：2018-03-27

Applicant: KURARAY CO., LTD.

Inventor： Koichiro ISOUE ,  Jun KOISHIKAWA ,  Hirotaka YASUDA ,  Uwe KELLER

IPC: C08L29/14 ,  C08K5/00 ,  B32B17/10

Abstract: A polyvinyl acetal resin film for laminated glass, a viscosity of toluene/ethanol=1/1 (by mass ratio) solution of a polyvinyl acetal resin in a resin composition constituting the polyvinyl acetal resin film with a concentration of 10% by mass, measured at 30 rpm and 20° C. by using a Brookfield-type (B-type) viscometer, being 100 to 1000 mPa·s, the polyvinyl acetal resin film comprising a plasticizer in an amount of 0 to 20% by mass based on a total mass of the resin composition constituting the polyvinyl acetal resin film, the polyvinyl acetal resin film having a thickness of 10 to 350 μm, the polyvinyl acetal resin film exhibiting a mean spacing Sm value of unevenness of at least one side of 500 μm or more, and a ratio Sm/Rz of the mean spacing Sm value of unevenness to a value of ten-point average roughness Rz of at least one side of 200 or more.