Embodiment relates to film for bonding, and a light-transmitting laminate including the same and the like, a film for bonding comprising an embossed surface, wherein the embossed surface has an A2/A1 value of 1 or less are disclosed. A film for bonding have improved in deairing stability during formation of a light transmitting laminate, an edge sealing characteristic, and the like by controlling characteristics of a embossed surface.

The present invention aims to provide an embossed thermoplastic resin sheet that is capable of enhancing deaeration during production of laminated glass and suppressing optical distortion of the resulting laminated glass to improve the visibility when used as an interlayer film for laminated glass. The present invention also relates to an engraved roll used for production of the embossed thermoplastic resin sheet, a production method of the engraved roll, an interlayer film for laminated glass including the embossed thermoplastic resin sheet, and a laminated glass. The present invention relates to an embossed thermoplastic resin sheet having a large number of recesses and a large number of projections on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly arranged side by side in parallel with one another, the thermoplastic resin sheet having not more than three defects of the projections per mm.sup.2 on the surface.

The present invention aims to provide an interlayer film for a laminated glass which has a multilayer structure including two or more resin layers laminated together and can prevent optical distortion even at high temperatures, a laminated glass including the interlayer film for a laminated glass, and a method of producing the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, the interlayer film including: two or more resin layers laminated together, one resin layer having a surface with a ratio (Rz/Sm) of a ten-point average roughness Rz (m) to an average interval Sm (m) of projections and recesses of 0.0018 or less as measured in conformity with JIS B-0601(1994) in the following manner: a laminated glass is produced using two clear glass sheets conforming to JIS R3202(1996) and the interlayer film; the interlayer film is peeled away from the clear glass sheets after the laminated glass is cooled with liquid nitrogen; the one resin layer is peeled away from another resin layer that is in direct contact with the one resin layer; and the Rz and Sm of the surface of the one resin layer on the side having been in contact with the other resin layer are measured.

A high frequency semi-isotropic embossed polymer interlayer sheet is disclosed. The embossed polymer interlayer sheet has a first side; a second side opposing the first side; and an embossed surface on at least one of the sides, and a surface texture ratio, Str, (as measured per ISO 25178) of between 0.1 and 0.99. The embossed polymer sheet may have at least 50 roughness peaks per centimeter (R PC, as measured per ASME B46.1 (1985)). The embossed polymer sheet may have a mottle value of less than or equal to 2.5 (as measured by a Clear Mottle Analyzer (CMA)). The embossed polymer sheet may be polyvinyl butyral.

A method of making a microstructured adhesive article that includes (a) providing an article comprising a crosslinked pressure sensitive adhesive layer disposed on a backing; and (b) embossing the surface of the crosslinked pressure sensitive adhesive layer to form a crosslinked pressure sensitive adhesive layer having a microstructured adhesive surface.

Provided is an interlayer film for laminated glass capable of suppressing color migration and enhancing the handling property of the interlayer film. An interlayer film for laminated glass according to the present invention contains a thermoplastic resin, a first plasticizer having a solubility parameter of less than 18.0 (J/cm.sup.3).sup.0.5, and a second plasticizer having a solubility parameter of 18.0 (J/cm.sup.3).sup.0.5 or more.

A high frequency semi-isotropic embossed polymer interlayer sheet is disclosed. The embossed polymer interlayer sheet has a first side; a second side opposing the first side; and an embossed surface on at least one of the sides, and a surface texture ratio, Str, (as measured per ISO 25178) of between 0.1 and 0.99. The embossed polymer sheet may have at least 50 roughness peaks per centimeter (R PC, as measured per ASME B46.1 [1985]). The embossed polymer sheet may have a mottle value of less than or equal to 2.5 (as measured by a Clear Mottle Analyzer [CMA]). The embossed polymer sheet may be polyvinyl butyral.

A method of making a microstructured adhesive article that includes (a) providing an article comprising a crosslinked pressure sensitive adhesive layer disposed on a backing; and (b) embossing the surface of the crosslinked pressure sensitive adhesive layer to form a crosslinked pressure sensitive adhesive layer having a microstructured adhesive surface.

Embossed polymer sheets and interlayers having at least one tapered zone are provided. The roughness of the embossed portion of the sheets and interlayers may be substantially uniform. Methods and systems for producing such interlayers are also described herein and may utilize at least one pair of rollers oriented substantially parallel to one another. When used in multiple layer panels, such as safety glass laminates, the embossed tapered interlayers described herein exhibit excellent optical performance, as indicated by the low haze and high clarity of the resulting panels.

The present invention aims to provide an interlayer film for laminated glass which, while having recesses in the shape of engraved lines, enables the production of a laminated glass with high production efficiency by a nip roll method; a roll of the interlayer film for laminated glass; a laminated glass including the interlayer film for laminated glass; and a method of producing laminated glass. The present invention relates to an interlayer film for laminated glass. The interlayer film includes, on at least one surface thereof, a large number of recesses and a large number of projections. The recesses have a groove shape with a continuous bottom. The recesses are adjacently arranged regularly side by side in parallel with one another. The recesses in a groove shape with a continuous bottom are inclined 55 or less relative to the machine direction of the film in production of the interlayer film for laminated glass.