A method for producing a phase difference film is provided. The phase difference film consisting of a resin C contains a copolymer P containing a polymerization unit A and a polymerization unit B, and includes a phase separation structure that exhibits a structural birefringence. The phase separation structure includes a phase including as a main component the polymerization unit A and another phase including as a main component the polymerization unit B. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprises: forming a single layer film of a resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.

A method for producing a phase difference film is provided. The phase difference film consisting of a resin C contains a copolymer P containing a polymerization unit A and a polymerization unit B, and includes a phase separation structure that exhibits a structural birefringence. The phase separation structure includes a phase including as a main component the polymerization unit A and another phase including as a main component the polymerization unit B. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprises: forming a single layer film of a resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.

The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.

The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.

The present invention relates to a process for the formation of a structured film, a structured film as such, an article comprising the structured film, a device for the continuous formation of such a structured film and a composite comprising the structured film.

The present invention relates to a process for the formation of a structured film, a structured film as such, an article comprising the structured film, a device for the continuous formation of such a structured film and a composite comprising the structured film.

A formulation for making voided plastics film including a polyolefin, a filler and a voiding agent. The voiding agent is a glycerol ester of fumaric rosin or a pentaerythritol ester of fumaric rosin.

Provided are a white polyester film including a polyester and white particles having an average primary particle diameter of 0.20 to 0.40 μm, in which a content of the white particles is 1.0% to 5.0% by mass with respect to the total mass of the film, a ratio of agglomerated particles having particle diameters of 0.40 to 0.80 μm in a direction parallel to a surface direction of the film on the cross-section of the film to the total number of primary particles and agglomerated particles of the white particles dispersed in the film is 10% to 20% by number, and a concentration of terminal carboxyl groups is 6 to 30 equivalents/ton, a method for manufacturing the same, a solar cell back sheet, and a solar cell module.

Provided are a white polyester film including a polyester and white particles having an average primary particle diameter of 0.20 to 0.40 μm, in which a content of the white particles is 1.0% to 5.0% by mass with respect to the total mass of the film, a ratio of agglomerated particles having particle diameters of 0.40 to 0.80 μm in a direction parallel to a surface direction of the film on the cross-section of the film to the total number of primary particles and agglomerated particles of the white particles dispersed in the film is 10% to 20% by number, and a concentration of terminal carboxyl groups is 6 to 30 equivalents/ton, a method for manufacturing the same, a solar cell back sheet, and a solar cell module.

An integral geogrid includes a plurality of interconnected, oriented strands having an array of openings therein that is produced from a coextruded multilayer polymer sheet starting material. By virtue of the construction, the coextruded multilayer sheet components provide a crystalline synergistic effect during extrusion and orientation of the integral geogrid, resulting in enhanced material properties that provide performance benefits to use of the integral geogrid in soil geosyuthetic reinforcement.