A multilayer colored thermoplastic intermediate layer, includes a first thermoplastic layer with a wedge-shaped cross-section; and a second thermoplastic layer having a substantially constant thickness, wherein the first thermoplastic layer is colorless and the second thermoplastic layer is colored with a dye.

This disclosure is related to the field of polymer interlayers for multiple layer glass panels and multiple layer glass panels having at least one polymer interlayer sheet. Specifically, this disclosure is related to the field of polymer interlayers comprising multiple thermoplastic layers which resist the formation of optical defects.

This disclosure is related to the field of polymer interlayers for multiple layer glass panels and multiple layer glass panels having at least one polymer interlayer sheet. Specifically, this disclosure is related to the field of polymer interlayers comprising multiple thermoplastic layers which resist the formation of optical defects.

An interlayer comprised of a thermoplastic resin and at least one special effect metal pigment. The use of a thermoplastic resin and at least one special effect metal pigment provides a special effect metal appearance without sacrificing other characteristics of the interlayer, and wherein the color of the interlayer measured in reflectance mode is different from the color measured in transmission mode.

Polyvinyl acetal films with less blocking tendency and which allow for escape of gas during laminating to form laminated composities are prepared by a process for embossing a film comprising plasticized polyvinyl acetal with a roughness Rz on at least one surfaces of 20 to 100 μm by the steps of a. extruding of plasticised polyvinyl acetal to a film with a stochastic roughness of the surfaces of Rz=1 to 70 μm, b. embossing at least one surface of the film obtained in step a) with channels having a depth of 5-50 μm, a width of 10-200 μm and a pitch of 50-2500 μm, wherein c. the surface roughness of the elevations between the channels is at most 20% lower as obtained in step a).

The present invention provides an interlayer film for a laminated glass capable of providing a laminated glass that reduces the occurrence of optical distortion, a laminated glass including the interlayer film for a laminated glass, and a method for producing the interlayer film for a laminated glass. Provided is an interlayer film for a laminated glass, having a maximum thickness curvature in a width direction of the interlayer film for a laminated glass of 0.010 m.sup.−1 or less.

A composite pane includes a first pane, a second pane, and a thermoplastic film arranged between the two panes, wherein at least one pane is in the form of a flat glass and at least one pane surface has a plurality of elongated elevations and elongated depressions that extend along a first pane direction and are alternatingly arranged in a second pane direction perpendicular to the first pane direction, the thermoplastic film is produced by extrusion and at least one film surface has a plurality of elongated elevations and elongated depressions that extend along a first film direction and are alternatingly arranged in a second film direction perpendicular to the first film direction, wherein the elongated elevations of the at least one pane are arranged at an angle different from 90° relative to the elongated elevations of the thermoplastic film.

The present invention aims to provide an interlayer film for a laminated glass that can, even when having a thickness at the thickest portion of 850 μm or more, exhibit sufficient deaeration properties in production of a laminated glass to provide a laminated glass with high transparency, and a laminated glass produced using the interlayer film for a laminated glass. Provided is an interlayer film for a laminated glass having a large number of recesses on at least one surface, the interlayer film for a laminated glass having a thickness T (μm) measured in conformity with JIS K-6732 (1996) and a maximum height roughness Ry (μm) measured in conformity with JIS B-0601 (1994) at a thickest portion, the thickness T and the maximum height roughness Ry satisfying the following expressions (1) and (1′):
Ry≥0.020×T+16.6  (1),
T≥850  (1′).

Penetration resistant laminated glass is obtained by laminating at least one film A containing a polyvinyl acetal PA and optionally at least one plasticiser WA and at least one film B containing a polyvinyl acetal PB and at least one plasticiser WB between two glass sheets, where prior to lamination, the amount of plasticiser WA in film A is less than 16% by weight, the amount of plasticiser WB in film B is at least 16% by weight, and film A comprises at least 7 ppm alkali ions.

An interlayer film for laminated glass is disclosed which contains a thermoplastic resin and has a portion where the amount of increase in the thickness is increased in a direction from one end to the other end in the region where the thickness is increased, or has a portion where the amount of increase in the thickness is decreased in a direction from one end to the other end in the region where the thickness is increased, and the ten-point average roughness Rz of the surface at a center position of the portion where the amount of increase in the thickness is increased, or the portion where the amount of increase in the thickness is decreased is 20 μm or more.