Interlayer film for laminated glass, and laminated glass
AssigneeSekisui Chemical Co., Ltd.
InventorsKazuhiko Nakayama, Hiroaki Inui, Hirofumi Kitano
Life of this patent
Estimating the term…
Abstract
The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties in a vacuum deaeration method and enabling production of a highly transparent laminated glass, and a laminated glass including 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 at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 μm or less.
Claims10
An interlayer film for a laminated glass, having recesses on at least one surface,
- the recesses each having a groove shape with a continuous bottom and being adjacently and regularly arranged in parallel with each other,
- the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 μm or less,
- wherein each highest point determined from a roughness curve drawn in conformity with JIS B 0601 (1994) in a direction of a line representing the shortest distance between deepest bottoms of adjacent recesses each having a groove shape with a continuous bottom is not at the center of the line representing the shortest distance between the deepest bottoms, and
- roughness Rz of the recesses each having a groove shape with a continuous bottom is 20 μm or more.
Dependencies are inferred from the claim text.