The present invention relates to a multilayer, coextruded polyester film including at least one outer layer (A) and a base layer (B), in which the at least one outer layer (A) includes, to an extent of at least 60 wt %, a polyester or a copolyester formed from units derived from aliphatic dicarboxylic acids and diols, wherein the units derived from dicarboxylic acids are selected from one or more dicarboxylic acids from the group of succinic acid, adipic acid, suberic acid, azelaic acid and sebacic acid, and the units derived from diols are selected from one or more diols from the group of ethylene glycol, 1,3-propanediol, 1,4-butanediol and neopentyl glycol.

The present invention further relates to a process for producing the film according to the invention, to the use thereof and to a process for recycling the polyester film according to the invention.

Disclosed are a variable-temperature yarn with a continuous sense of cold and a manufacturing method thereof. A fiber of the variable-temperature yarn with a continuous sense of cold comprises a skin part and a core part, wherein the core part is wrapped in the skin part and is made of a PCM or phase-change energy-storage wax, and a cross-sectional area of the PCM or phase-change energy-storage wax accounts for 5%-70% of a cross-sectional area of the fiber. More PCMs can be directly injected into a fiber core, so that a textile product has a stronger sense of cold, the sense of continuous cold of the product is greatly improved, the requirement of users for cold experience is better met, and the market blank is filled.

Embodiments provide a method for producing a multilayer film, the method including: (A) a step for continuously coextruding from a T die (3) a molten film (4) of a multilayer film in which a first acrylic resin layer (α1), an aromatic polycarbonate resin layer (β), and a second acrylic resin layer (α2) are directly laminated in the stated order using a coextrusion apparatus; (B) a step for feeding and pressing the molten film of the multilayer film between a first mirror surface body (5) that rotates or revolves and a second mirror surface body (6) that rotates or revolves so that the first acrylic resin layer (α1) is disposed on the first-mirror-surface-body side; and (C) a step for holding the pressed multilayer film against the first mirror surface body and sends the pressed multilayer film to the subsequent third mirror surface body (8) that rotates or revolves, where TR1 (surface temperature of first mirror surface body), TR2 (surface temperature of second mirror surface body), Tα1 (glass transition temperature of first acrylic resin), Tα2 (glass transition temperature of second acrylic resin), and Tβ (glass transition temperature of aromatic polycarbonate resin) satisfy a prescribed relationship.

A method for manufacturing a closure constructed to be inserted and securely retained in a neck of a product-retaining container includes intimately combining a plurality of coated particles (each comprising a cork material core and a first plastic material) with a second plastic material, and other optional constituents; heating the composition to form a melt; extruding or molding a closure precursor from the melt; and optionally cutting and/or finishing the closure precursor. A composition for use in manufacturing a closure includes a plurality of coated particles (each comprising a cork material core and a first plastic material) with a second plastic material, and one or more blowing agents. Methods for producing particulate material, cork composite material, and additional method for producing closures are also provided.

The present invention concerns a chemical mechanical polishing pad having a polishing layer. The polishing layer contains an extruded sheet. The extruded sheet is prepared by extruding a compounded photopolymerizable composition followed by exposure to UV light.

The present invention relates to a polyvinyl acetal resin film, comprising a polyvinyl acetal resin material, wherein the polyvinyl acetal resin film has a thickness of 5 to 350 μm, and satisfies the following Formulae (1) and (2) where, comparing one surface and the other surface, a mean value of the 10-point average roughness of a rougher surface A and a mean value of the 10-point average roughness of a smoother surface B are defined as Rz1(a) μm and Rz2(a) μm, respectively:
Rz1(a)>1.1×Rz2(a)  (1)
3>Rz2(a)  (2), a value obtained by dividing the standard deviation of the 10-point average roughness of the surface A by Rz1(a) and a value obtained by dividing the standard deviation of the 10-point average roughness of the surface B by Rz2(a) are each 0 to 0.30, a viscosity of a toluene/ethanol (1:1, mass ratio) solution containing 10%-by-mass of a polyvinyl acetal resin contained in the polyvinyl acetal resin material, which is measured at 20° C. and 30 rpm using a Brookfield-type (B-type) viscometer, is 100 to 1,000 mPa.Math.s, and the amount of a plasticizer in the polyvinyl acetal resin film is 0 to 20% by mass based on a total mass of the polyvinyl acetal resin film.

Disclosed are methods for forming a double-sided optical sheet, and a vehicle lamp assembly having the double-sided optical sheet integrated therein. A first optical pattern is imprinted on a first side of a material, and a second optical pattern is imprinted on a second side of the material, opposite the first side. The first and second optical patterns are thereby formed on opposing sides of the same sheet. When oriented adjacent a light source, the double-sided optical sheet homogenizes light emitted from the light source. For a light source having a plurality of lighting elements, the double-sided optical sheet is configured to blend light emitted from the plurality of lighting elements to form one homogenous beam of light output resulting from a single light-modifying member.

The present invention relates to biodegradable composites based on blends of a thermoplastic polymer material with cellulosic materials, useful for several industrial and packaging applications, in particular for the manufacture of biodegradable films and articles of complex shape, having improved mechanical properties, oxygen barrier properties, biodegradation and heat resistance; and to a process for the manufacture of these biodegradable composites.

Provided are a film having an excellent balance between heat seal strength and opening strength, a method of producing the film, and a bag obtained by heat-sealing the film. According to the present invention, there is provided a film containing a resin, wherein a resin density of the film is 860 kg/m.sup.3 or more and less than 900 kg/m.sup.3, and on at least one surface of the film, an arithmetic mean height Sa satisfies the following Expression [1]:
0.10 μm≤Sa≤0.50 μm  [1], and a minimum autocorrelation length Sal satisfies the following Expression [2]:
0.2 μm≤Sal≤10.4 μm  [2].

An object of the present invention is to produce a double-sided carpet type skin-equipped hollow molded article so as to prevent degradation of aesthetic appearance of the hollow molded article. The double-sided carpet type skin-equipped hollow molded article includes: a hollow molded article main body made of a thermoplastic and having a front surface wall and a back surface wall; and skins integrally bonded to the respective front and back surface walls. A first skin bonded to the front surface wall is a napped-type skin. A second skin bonded to the back surface wall is a skin having a thickness smaller than a thickness of the first skin. A wall surface to which the first skin is bonded protrudes outward more than a wall surface to which the second skin is bonded in a parting line of the hollow molded article main body. The first skin has a large thickness and is a napped-type skin. Therefore, obtained is an effect that a nap raised after deburring and cutting masks a cut portion.