An interlayer film for laminated glass that can improve a sound insulation property of an obtained laminated glass when the interlayer film for laminated glass is used for configuring the laminated glass is provided. The interlayer film for laminated glass according to the present invention includes a first layer and a second layer laminated on a first surface of the first layer. The first layer includes a polyvinyl acetate resin and a plasticizer.

An interlayer film for laminated glass that can improve a sound insulation property of an obtained laminated glass when the interlayer film for laminated glass is used for configuring the laminated glass is provided. The interlayer film for laminated glass according to the present invention includes a first layer and a second layer laminated on a first surface of the first layer. The first layer includes a polyvinyl acetate resin and a plasticizer.

The present application relates to an optical device. The present application provides an optical device capable of varying transmittance, and such an optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

The utilization of heat in the manufacturing of footwear may be accomplished through microwave energy. The microwave energy is conveyed to the footwear components through a microwave transparent window of a tool. The microwave transparent tool window forms as least a portion of a part-contacting surface of the tool. Another surface of the tool is formed from a microwave reflecting material, such as aluminum. The footwear component(s) are exposed to microwave energy while within the tool such that the microwave energy passes through the tool window to cause a dielectric heating of one or more materials within a tool cavity of the tool.

A dressing for treating tissue with negative pressure may be a composite of dressing layers, including a release film, perforated gel layer, a perforated polymer film, a manifold, and an adhesive cover. A method of manufacturing the dressing may comprise providing a first layer, such as the gel layer, on a substrate, perforating the first layer on the substrate to create a plurality of apertures in the first layer, and creating an index of the plurality of apertures in the first layer. A laser can be calibrated based on the index. A second layer, such as the polymer film, may be coupled to the first layer, and a plurality of slots can be cut in the second layer with the laser. Each of the slots can be cut through one of the apertures in the first layer based on the index.

An image display system (10) of the present invention includes: a sheet-shaped glass structure (11) containing a light scattering compound; and a light source (20) that irradiates one surface (11B) of the sheet-shaped glass structure (11) with light, wherein an images is displayed on the other surface (11F) of the sheet-shaped glass structure (11) by the light scattered by the light scattering compound. According to the present invention, in a rear projection-type image display system, image display with high contrast and high luminance is achieved, and a light source or the like disposed on the back surface side of the screen is less likely to be viewed.

Provided is an interlayer film for laminated glass with which change in partial wedge angle can be suppressed at the time of preparation of laminated glass, and double images can be suppressed in the laminated glass. The interlayer film for laminated glass according to the present invention has one end, and the other end having a larger thickness than the one end; the thickness of the interlayer film does not increase evenly from the one end toward the other end, and an average rate of change in partial wedge angle determined by the following formula (X) is 10% or less when an interlayer film finally pressure-bonded is obtained through a predetermined process using the interlayer film for laminated glass as an interlayer film before pressure-bonding, and each partial wedge angle is measured in each of the interlayer film before pressure-bonding and the interlayer film after final pressure-bonding. Rate of change in partial wedge angle (%)=|(Partial wedge angle of interlayer film after final pressure-bonding−Partial wedge angle of interlayer film before pressure-bonding)/(Partial wedge angle of interlayer film before pressure-bonding)|×100 . . . Formula (X)

A polyvinyl acetal resin film, having an average surface roughness Rz of at least one surface of 3.0 μm or less; a birefringence Δn of 3.0×10.sup.−4 or less; and an average thickness of 200 μm or less.

A method to produce a tile comprising at least the following layered sections: a wear layered section, a décor layered section and a base layered section; and wherein the wear layered section comprises the following: A) a compositional layer A formed from a composition A comprising at least one olefm-based polymer; wherein the décor layered section comprises the following: B1) a compositional layer B1 formed from a composition B1 comprising a propylene-based polymer; B2) a compositional layer B2 formed rl from a composition B2 comprising an olefm-based polymer; wherein the base layered section comprises the following: C) a compositional layer C formed from a composition C comprising an olefin-based polymer; wherein the method comprises the following step(s): i) heat laminating compositional layer A to compositional layer B1, at a temperature T1≤140° C.; and wherein, for a continuous production of the tile, T1 is the temperature at the surface of the compositional layer with the highest, or equivalent, surface temperature; and for a batch production of the tile, T1 is the interfacial temperature between the two compositional layers; ii) heat laminating compositional layer B2 to compositional layer C, at a interfacial temperature T2≤140° C.; and wherein, for a continuous production of the tile, T2 is the temperature at the surface of the compositional layer with the highest, or equivalent, surface temperature; and for a batch production of the tile, T2 is the interfacial temperature between the two compositional layers.

A packaged film assembly includes a packaging material and an insert film. The insert film is packaged in and attached to at least a portion of the packaging material. The packaging material is not laminated to another surface.