The invention provides a biaxially oriented polyester film having excellent impact strength and heat resistance and a method for producing same. The method comprises (A) melt-extruding a composition comprising polyester resin for which Tc−(Tg+Tm)/2 is 25−30° C. to obtain unstretched polyester resin composition sheet, which (B) is heated at Tg+5 (° C.) to Tg+40 (° C.) of the polyester resin and stretched in the machine direction at 2×-6× to obtain uniaxially oriented polyester resin composition film, which (C) is heated at Tc−46 (° C.) to Tc+25 (° C.) of the polyester resin and stretched in the transverse direction at 4×−8× to obtain biaxially oriented polyester resin composition film, which (D) undergoes relaxation at 3%-20% in the transverse direction as heated at Tm−40 (° C.) to Tm−5 (° C.) of the polyester resin.

Multilayer oriented shrink films include a base layer and at least one skin layer on at least one side of the base layer. The at least one skin layer includes at least one amorphous styrene-butadiene block copolymer or at least one amorphous cyclic olefin copolymer. The base layer has a thickness greater than the at least one skin layer and includes a blend of: (a) at least one styrene block copolymer selected from the group consisting of styrene-ethylene/butene-styrene triblock copolymers, styrene-ethylene/propylene-styrene triblock copolymers, styrene-ethylene/butene diblock copolymers and styrene-ethylene-propylene diblock copolymers and combinations thereof; and (b) at least one propylene polymer selected from the group consisting of polypropylene terpolymers with ethylene and butene-1, propylene ethylene copolymers, propylene butene-1 copolymers and combinations thereof.

A transparent thermoformed high barrier plastic bottle is provided for use in storing food and beverages, personal care products, health care products, and other applications that require excellent transparency and barrier properties. The transparent thermoformed high barrier plastic bottle includes first and second outer layers formed using a transparent polyester or polyester copolymer; an inner nanolayer sequence including a plurality of nanolayers a) including ethylene vinyl alcohol, alternating with nanolayers b) including at least one of ethylene ethyl acrylate, low density polyethylene and linear low density polyethylene, each of the nanolayers b) having a degree of crystallinity less than about 45%; and adhesive layers between each of the two outer layers and the inner nanolayer sequence. A method for producing a transparent thermoformed high barrier plastic bottle is also provided.

Multilayer oriented shrink films include a skin layer and a base layer; the skin layer being on one side of the base layer, characterized in that the skin layer comprises at least one amorphous styrene-butadiene block copolymer and the base layer has a thickness greater than said skin layer and includes a polypropylene terpolymer, a polybutene-1 copolymer, a polypropylene elastomeric copolymer and at least one copolymer from the group consisting of styreneethylene/butene-styrene triblock copolymers, styrene-ethylene/propylene-styrene triblock copolymers, styrene-ethylene/butene diblock copolymers, styrene-ethylene-propylene diblock copolymers, and combinations of two or more of said triblock and diblock copolymers.

The present invention relates to thermoforming food packaging methods and to dual ovenable thermoformed food packages suitable for cooking food products directly in the package in microwave, conventional and convection ovens. These packages are characterized by good hermeticity, clean peelability, self-venting, very good optics and, if shrunk, a very appealing appearance.

The present disclosure relates to a polyester resin blend, a polyester film and a preparation method of the same. The polyester resin blend is capable of providing a heat shrinkable label that is transparent and has excellent shrinkage even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate. In addition, the heat shrinkable label can be reused while attached to a PET container, etc., and is expected to be useful for providing continuously usable plastics that have been recently attracting attention.

In various aspects, the present disclosure pertains to thermoformable, multi-layer polymer films comprising a core layer that is comprised of a blend of high density polyethylene and low density polyethylene and, at least one outermost layer that is comprised of a blend of a cyclic olefin copolymer, polyethylene, a functionalized polymer, a dispersing agent and a mineral filler. The present disclosure includes thermoformed webs made from such films, the webs having one or more thermoformed cavities contained therein. Other aspects of the disclosure pertain to methods of forming such thermoformed webs, packaged products comprising such thermoformed webs, and methods of recycling such thermoformed webs.

A resin film comprising a multilayer structure acrylic polymer and the film having an acid value of not more than 0.018 mmol/g in an acetone insoluble matter, an acid value of not more than 0.012 mmol/g in an acetone soluble matter, a glass transition temperature of not less than 80° C. and a thickness of 5 to 300 μm is obtained by a method comprising emulsion polymerization for producing a latex comprising multilayer structure acrylic polymer, coagulating the latex comprising the multilayer structure acrylic polymer to obtain a slurry, washing and dehydrating the slurry, drying the dehydrated slurry to remove the multilayer structure acrylic polymer, mixing 0 to 35% by mass of an acrylic resin and 65 to 100% by mass of the removed multilayer structure acrylic polymer and subjecting the resultant mixture melted to an extrusion molding.

The present invention provides an environment-responsive laminated film including an inorganic thin film layer and a protective layer in this order on a substrate film layer using a polyester resin recycled from PET bottles. The laminated film has excellent barrier properties and adhesiveness even after a severe wet heat treatment and has less deterioration in appearance of the film even after retorting. The laminated film comprises a substrate film; an inorganic thin film layer on at least one surface of the substrate film; and a protective layer containing a urethane resin on the inorganic thin film layer, wherein (a) the substrate film contains 50% by weight or more of a polyester resin recycled from PET bottles; (b) standard deviation of a haze after retorting the laminated film at 130° C. for 30 minutes is 0.5% or less; and (c) an adhesion amount of the protective layer is 0.5 g/m.sup.2 or less.

A hose includes an outer cover layer and at least one ply disposed inward from the outer cover layer, characterized in that the outer cover layer is a shrink sleeve, and where the at least one ply is formed from a reinforced silicone rubber sheet which includes a reinforcement. The hose may further include an inner layer disposed within the at least one ply, and which defines a lumen. The shrink sleeve may be a polyolefin shrink sleeve. The layers are tensioned together with the shrink sleeve. The hose may be prepared by a shrink tension method without the use of a tape wrap. A method of preparing the above hose may include wrapping the inner layer around a mandrel, wrapping the at least one at least one ply around the inner layer, pulling the shrink sleeve over the at least one at least one ply, and vulcanizing the hose.