The invention provides an amorphous copolymerized polyester raw material for a film, wherein the copolymerized polyester raw material (1) contains ethylene terephthalate as a main constituent component, and neopentyl glycol by 15-30 mol % when a total amount of glycol component in a total polyester resin component is taken as 100 mol %, (2) contains a constituent unit derived from diethylene glycol by 7-15 mol % in the total amount of glycol component 100 mol % in the total polyester resin component, (3) has an intrinsic viscosity of 0.60 dl/g or more and less than 0.70 dl/g, and (4) has a glass transition temperature of 60-70° C. The invention also provides a heat-shrinkable polyester-based film containing the amorphous copolymerized polyester raw material, as well as a heat-shrinkable label and a packaging bag.

Embodiments relate to a protective film for a polarizer, a polarizing plate, and a display device comprising the same. The protective film for a polarizer according to the embodiments is improved in mechanical strength and minimized in rainbow strains by minimizing the difference in the orientation angle between the center and the edge of the film while generating a difference in the strengths in the longitudinal/transverse directions of the film. Hence, it can be advantageously used as a protective film for a polarizer.

The invention relates to transparent packaging for vacuum forming, inter alia, formed from a biaxially oriented, thermoformable polyester film as lower film (A) and a biaxially oriented polyester film as upper film (B) that is both heat-sealable and peelable (at least when the material is hot) in relation to the lower film (A). The present invention further relates to the use of such packaging to produce sealed, thermoformed packs, and to the processes for their respective production.

Disclosed are compositions and methods for multilayer films, which, in one embodiment may include a core layer comprising a polyethylene stabilizer optionally in a masterbatch solution and at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising at least 90 wt. % ethylene-propylene polymer and antiblock, and a second skin layer consisting of an ethylene-propylene copolymer or terpolymer. Further still, the multilayer film may include a primer layer on the second skin, an aqueous barrier layer of ethylene vinyl alcohol polymer, polyvinyl alcohol polymer, or combinations thereof on the primer layer. And, further still, multilayer film may include a metallization layer on the aqueous barrier layer, wherein the multilayer film may be oriented in at least one direction.

To provide a multilayer film that enables easy opening of a packaging material manufactured by deep draw forming. A multilayer film for deep draw forming, including: a vinylidene chloride copolymer resin layer as a middle layer; a crosslinked olefin resin layer as a first surface layer; and an ethylene/vinyl acetate copolymer resin layer as a second surface layer; where the ethylene/vinyl acetate copolymer resin layer is further provided either at least between the vinylidene chloride copolymer resin layer as the middle layer and crosslinked olefin resin layer as the first surface layer, or between the vinylidene chloride copolymer resin layer as the middle layer and ethylene/vinyl acetate copolymer resin layer as the second surface layer.

Disclosed are compositions and methods for multilayer films, which, in one embodiment may include a core layer comprising a polyethylene stabilizer optionally in a masterbatch solution and at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising at least 90 wt. % ethylene-propylene polymer and antiblock, and a second skin layer consisting of an ethylene-propylene copolymer or terpolymer. Further still, the multilayer film may include a primer layer on the second skin, an aqueous barrier layer of ethylene vinyl alcohol polymer, polyvinyl alcohol polymer, or combinations thereof on the primer layer. And, further still, multilayer film may include a metallization layer on the aqueous barrier layer, wherein the multilayer film may be oriented in at least one direction.

Disclosed are compositions and methods for multilayer films, which, in one embodiment may comprise a core layer comprising at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer consisting essentially of one or more ethylene-propylene copolymers. Further still, the multilayer film may include a second skin layer consisting essentially of one or more ethylene-propylene-butylene terpolymers. And yet further, the multilayer film may be oriented in at least one direction, and at least two layers of the multilayer film are coextruded.

Disclosed are compositions and methods for multilayer films, which, in one embodiment may comprise a core layer comprising at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising an ethylene-propylene polymer, and a second skin layer comprising at least one or more α-olefin copolymers and antiblock. One or more of the at least one or more α-olefin copolymers in the second skin layer, which may be a sealant skin layer, may include at least one ethylene-propylene-butylene polymer in combination with a plastomer and/or elastomer that contain propylene, ethylene, or a combination thereof.

A polyester film for being embossed with a laser-engraved pattern and a manufacturing method thereof are provided. The polyester film includes a substrate layer and at least one surface layer formed on the substrate layer. The surface layer serves as an easy-to-press embossed pattern layer, and is formed from a polyester-based copolymer. The polyester-based copolymer includes residues derived from a diacid component and residues derived from a diol component. The diacid component includes 85 to 95 mol % of terephthalic acid and 5 to 15 mol % of isophthalic acid. The diol component includes 35 to 74 mol % of ethylene glycol, 1 to 15 mol % of neopentyl glycol, and 25 to 50 mol % of 1,4-butanediol.

A low oligomer modified polyester film capable of being easily extended and a method for manufacturing the same are provided. The modified polyester film includes a base layer and at least one skin layer formed on the base layer, each of which is formed from a polyester composition. The polyester composition includes 1 to 60 wt % of a blend resin, 0.02 to 2 wt % of an antioxidative ingredient, 0.003 to 2 wt % of a nucleation agent, and 0.003 to 2 wt % of a processing and flowing aid. The blend resin includes 90 to 99.9 phr of a polyester resin and 0.01 to 10 phr of an acrylic resin. The polyester resin has an intrinsic viscosity between 0.62 dl/g and 1.00 dl/g, and the acrylic resin has a weight average molecular weight (Mw) between 10,000 and 80,000.