Abstract: A composite film comprising: (i) a heat-stabilised oriented polyester substrate comprising a UV-absorber in an amount of from about 0.1 to about 10% based on the total weight of the polyester substrate, and (ii) on one or both surfaces of the substrate a polymeric coating layer, which has a thickness in the range of from about 10 nm to about 200 nm, and which comprises an ethylene acrylic acid (EAA) copolymer, wherein the composite film exhibits a shrinkage at 150° C. for 30 minutes of less than 0.1% in both the longitudinal and transverse dimensions of the film, and use thereof in the manufacture of photo-voltaic cells.

Abstract: A breathable, heat-sealable composite film comprising first and second layers of polymeric material wherein (i) the polymeric material of the first layer comprises copolyester comprising monomeric units derived from one or more diol(s); one or more dicarboxylic acid(s); and one or more poly(alkylene oxide)glycol(s); and (ii) the second layer is a heat-sealable polymeric layer, and a process for the production thereof.

Abstract: A biaxially oriented composite film includes a polyester substrate supporting one or more coatings on one or both surfaces of said substrate, wherein the polyester substrate is a biaxially oriented film; wherein the one or more coatings is/are derived from a predominantly inorganic hardcoat coating composition including inorganic particles contained in a polymerisable predominantly inorganic matrix; and wherein the biaxially oriented composite film has been annealed at a temperature Ta (° C.) above Tg where Tg<Ta?Tg+100 (° C.) for a time t after thermal equilibrium where 1 hour ?t?72 hours. A method of making the film is provided.

Abstract: A radio-frequency (RF) responsive tag comprising a heat-sealing substrate comprising a polyester layer, and an antenna comprising a pattern of conductive material wherein said conductive material is in direct contact with a heat-sealing surface of the substrate, and wherein the shrinkage of the heat-sealing substrate is less than 5% at 190° C. over 30 minutes; a method of manufacture of said RF-response tag.

Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.

Abstract: A method of preventing or minimizing the formation of haze in a biaxially oriented polyester film during the annealing of said film above its glass transition temperature, said method comprising: (a) selecting a biaxially oriented polyester film having glass transition temperature (Tg (° C.

Abstract: A stretched film comprising a dispersion of at least one polyester and/or polycarbonate in a matrix of at least one polyester and/or polycarbonate different from the first polyester and/or polycarbonate, the percentage by weight of the dispersed polyester and/or polycarbonate in the dispersion being less than 50% and the dispersed polyester and/or polycarbonate being in the form of platelets. The stretched film can be used as a dielectric in a capacitor.

Abstract: A multi-layer biaxially oriented film comprising a first layer (A) comprising an aromatic polyester (a) and a second layer (B) comprising a polyolefin (b) having a melting point of from 230 to 290° C. wherein said polyolefin is a styrene polymer, and an adhesive interlayer (C) between a layer (A) and a layer (B), wherein said adhesive interlayer (C) comprises a tie-layer material (c) selected from anhydride-modified ethylene copolymers in which the proportion of anhydride present in the copolymer is no more than 3.0% by weight of the polymer, and in which the ethylene copolymer comprises one or more additional comonomers other than styrene.

Abstract: A biaxially oriented polyester film comprising polyester and at least one hydrolysis stabiliser selected from a glycidyl ester of a branched monocarboxylic acid, wherein the monocarboxylic acid has from 5 to 50 carbon atoms, wherein said hydrolysis stabiliser is present in the film in the form of its reaction product with at least some of the end-groups of said polyester, and wherein said reaction product is obtained by the reaction of the hydrolysis stabiliser with the end-groups of the polyester in the presence of a metal cation selected from the group consisting of Group I and Group II metal cations.

Abstract: A coating composition including an alkali metal silicate, a wetting agent, and a hydrophilic antifog agent forms an antifog coating on a substrate. The coating may be applied to the surface of a film from an aqueous dispersion of the ingredients, followed by drying to form a composite film.

Abstract: A multilayer composite film includes in sequence: a) a biaxially oriented, opaque polyester base layer; b) a non-voided polyester layer on and coextensively in contact with a surface of the base layer; and c) a metal layer on a surface of the non-voided polyester layer opposite the opaque polyester base layer, or on a primer layer on a surface of the non-voided polyester layer opposite the opaque polyester base layer. The film may be prepared by vapor depositing or plasma depositing a metal layer on a surface of a non-voided polyester layer coextensively contacting a biaxially oriented, opaque polyester base layer, or on a primer layer on a surface the non-voided polyester layer.

Abstract: A process for the manufacture of a reflective conductive film comprising: (i) a reflective polymeric substrate comprising a polymeric base layer and a polymeric binding layer, wherein the polymeric material of the base layer has a softening temperature TS-B, and the polymeric material of the binding layer has a softening temperature TS-HS; and (ii) a conductive layer comprising a plurality of nanowires, wherein said nanowires are bound by the polymeric matrix of the binding layer such that the nanowires are dispersed at least partially in the polymeric matrix of the binding layer, said process comprising the steps of providing a reflective polymeric substrate comprising a polymeric base layer and a polymeric binding layer; disposing said nanowires on the exposed surface of the binding layer; and heating the composite film to a temperature T1 wherein T1 is equal to or greater than TS?HS, and T1 is at least about 5° C. below TS-B.

Abstract: A coextruded biaxially oriented composite film comprising a polyester substrate layer and disposed on one or both surfaces thereof a strippable sacrificial layer, wherein said strippable sacrificial layer comprises an ethylene-methacrylic acid (EMAA) copolymer.

Abstract: A composite film comprising: (i) a heat-stabilised oriented polyester substrate comprising a UV-absorber in an amount of from about 0.1 to about 10% based on the total weight of the polyester substrate, and (ii) on one or both surfaces of the substrate a polymeric coating layer, which has a thickness in the range of from about 10 nm to about 200 nm, and which comprises an ethylene acrylic acid (EAA) copolymer, wherein the composite film exhibits a shrinkage at 150° C. for 30 minutes of less than 0.1% in both the longitudinal and transverse dimensions of the film, and use thereof in the manufacture of photo-voltaic cells.

Abstract: A multilayer film suitable for sealing containers such as used for food packaging, and methods of making the film, are described. The film is particularly suitable for sealing containers made from polylactic acid (PLA). The multilayer film includes a) a substrate that includes a polymeric base layer; and b) on the substrate, a heatseal layer containing a PLA homopolymer or copolymer. The heatseal layer further includes dispersed therein an adhesion promoter, or alternatively the substrate further includes the adhesion promoter in a layer on a surface of the polymeric base layer between and adjacent the base layer and the heatseal layer. An antifog agent may also be included in the heatseal layer or on the surface of the heatseal layer opposite the substrate.

Abstract: The invention relates to A bi-axially stretched breathable film comprising a polymeric mixture, said polymeric mixture comprising based on the total weight of the polymeric mixture/—at least 50% of at least one polyether block copolymer; and —from 0.5 to less than 50% of at least one polyester. The invention also relates to a method to manufacture said film, and uses of said film. The invention also relates to a method for producing a bi-axially stretched breathable film comprising at least one polyether block copolymer.

Abstract: A process in which a wound roll of biaxially oriented polyester film having a glass transition temperature (Tg (° C.)) is annealed at a temperature Ta (° C.) above Tg where Tg<Ta?Tg+100 (° C.) for a time t after thermal equilibrium where 1 hour?t?72 hours and cooled, for the purpose of improving the shrinkage of said polyester film.

Abstract: A breathable, heat-sealable, composite film comprising a perforated polymeric substrate layer having a first and second surface and disposed on a surface of the substrate layer an unperforated barrier layer wherein: (i) the thickness of the unperforated barrier layer is no more than about 12 pm; and (ii) the perforated substrate layer has a degree of perforation of from about 0.1 to about 78%, wherein the perforations have an average diameter of between 0.05 and 1.5 mm; and a process for the production thereof, suitable for use in the packaging of freshly cut plants such as flowers, vegetables, fruits and salads.

Abstract: A coated article includes a substrate having on its surface a coating that includes a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and a crosslinker selected from the group consisting of water-soluble titanium salts and water-soluble or water-dispersible organic crosslinkers. The coating may be formed by applying a dispersion of the coating composition in a diluent to the substrate and subsequently drying the coated substrate to evaporate the diluent.

Abstract: A coating composition comprising an alkali metal silicate, a wetting agent, and a hydrophilic antifog agent forms an antifog coating on a substrate. The coating may be applied to the surface of a film from an aqueous dispersion of the ingredients, followed by drying to form a composite film.