Abstract: This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least the APET side of an APET/CPET tray, the heatsealable and peelable top layer (A) consisting of a) 50–95% by weight of polyester and b) 5–40% by weight of a polyester-incompatible polymer (=anti-PET polymer) based on the mass of the top layer (A), wherein c) the polyester is composed of 20–95 mol % of units derived from at least one aromatic dicarboxylic acid and 5–80 mol % of units derived from at least one aliphatic dicarboxylic acid, and d) the layer thickness dA is from 1.3 to 3.0 ?m. The invention further relates to a process for producing the film and to its use.

Abstract: The invention relates to a white, biaxially oriented film which comprises a crystallizable thermoplastic as main componet and is characterized by further comprising at least one UV-stabilizer, at least one white pigment and at least one flame-proofing agent, which is soluble in the thermoplastic and introduced directly, during the film production, by masterbatch technology, whereby the masterbatch is pre-conditioned by gradual heating under reduced pressure and with stirring.

Abstract: The invention relates to an opaque, white film with a thickness of from 10 to 500 ?m whose principal constituent is a crystallizable thermoplastic. The film comprises at least barium sulfate and at least one optical brightener. The barium sulfate and/or the optical brightener are incorporated directly into the crystallizable thermoplastic or are fed as a masterbatch during film production. At least one surface of the film bears a functional coating with a thickness of from 5 to 100 nm, in order to confer on the film surface an additional function such as sealability, printability, metallizability, sterilizability, antistatic properties, aroma barrier properties or improved adhesion to materials which would not adhere to the film surface without the coating, for example photographic emulsions.

Abstract: Biaxially oriented, co-extruded polyester films comprising a base layer consisting of at least 90 wt. % thermoplastic polyester, preferably polyethylene terephthalate (PET), at least one sealable outer layer and a second non-sealable outer layer and, optionally, other intermediate layers, in addition to at least one flame-retardant agent, preferably organic phosphorous compounds. The inventive films are characterized by low inflammability, high UV stability, no embrittlement when subjected to thermal stress and a surface which is devoid of troublesome opacity. They are suitable for a multiplicity of uses both indoors and outside. The outer layers contain anti-blocking agents such as silicic acid having an average particle diameter of preferably less than 50 nm and/or 2 ?m. Preferably, the sealable outer layer consists of a copolyester which is made of ethylene terephthalate and ethylene isophthalate units.

Abstract: The invention relates to a single- or multilayer, white, biaxially oriented polyester film. Films of the invention are formed from thermoplastic polyester and are coated on at least one side with a water-soluble adhesion-promoting layer that includes a hydrolyzed amino-functional silane. The invention further relates to the use of the film and to a process for its production.

Abstract: This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable with respect to at least CPET. The heatsealable and peelable top layer (A) consists of a) 70–97% by weight of polyester and b) 3–20% by weight of a polyester-incompatible polymer (=anti-PET polymer) based on the mass of the top layer (A), wherein c) the polyester is composed of 20–95 mol % of units derived from at least one aromatic dicarboxylic acid and 5–80 mol % of units derived from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and d) the layer thickness of the top layer (A) dA is from 1.7 to 6.0 ?m. The invention further relates to a process for producing the film and to its use.

Abstract: This invention relates to electrode substrates for electrochemical cells, particularly low-temperature fuel cells, and processes for their production. Low-cost carbon fiber paper structures are used as precursor for preparation of an all-carbon product that has a high electric conductivity and porosity and can be processed in a continuous reel-to-reel mode. These paper materials are further impregnated and processed to adjust the final product properties. This all-carbon electrode substrate is not brittle thereby avoiding the main disadvantage of the prior art.

Abstract: The invention relates to the use of a biaxially oriented polyolefin film as a label film. The inventive film consists of a base layer and at least one cover layer. Said cover layer contains as the main component a copolymer or terpolymer consisting of one alkene and unsaturated carboxylic acids or the esters thereof and low amounts of an additive. The cover layer is characterized by excellent and divers adhesion to various polymer materials from which containers are formed. It is no longer necessary to apply adhesives, primers, coatings etc. in a separate step after production of the film.

Abstract: This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 60–97% by weight of polyester and b) 3–30% by weight of a polyester-incompatible polymer (=anti-PET polymer), based on the mass of the top layer (A), wherein c) the polyester being composed of 25–95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5–75 mol % of units which derive from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and d) the layer thickness of the top layer (A) dA being from 0.7 to 2.5 ?m.

Abstract: Polyester films which comprise not only thermoplastic polyester, e.g. polyethylene terephthalate, but also from 5 to 45% by weight of poly(m-xyleneadipamide) and optionally from 0.02 to 1% by weight of fillers, and which have, on at least one surface, an adhesion-promoting layer comprised of a hydrolyzed amino-functional silane. The films of the invention are produced by a sequential stretching process, and feature improved mechanical properties, such as a modulus of elasticity greater than 3500 N/mm2 in both orientation directions, high gloss, low haze, and very good barrier properties with respect to oxygen transmission. Films of the invention are therefore a suitable packaging material for foods and other consumable items, and as starting material for production of laminates via extrusion coating.

Abstract: The present invention relates to a transparent, low-flammability, UV-resistant, oriented film made from a crystallizable thermoplastic and having a thickness of from 5 to 300 ?m. The film comprises at least one UV stabilizer and at least one flame retardant, and at least the flame retardant, and preferably also the UV stabilizer, is fed directly as a masterbatch to the crystallizable thermoplastic during production of the film. The film may have one or more layers, and the UV stabilizer may have been selected from the group consisting of the 2-hydroxybenzophenones, the 2-hydroxybenzotriazoles, the organonickel compounds, the salicylic esters, the cinnamic ester derivatives, the resorcinol monobenzoates, the oxanilides, the hydroxybenzoic esters, the sterically hindered amines and triazines, and the flame retardant may be an organic phosphorus compound, in particular an organic phosphorus compound soluble in polyethylene terephthalate.

Abstract: Biaxially oriented polyester films which have at least one polyester-containing base layer (B) and at least one matt overlayer (A), the overlayer (A) comprising particles, preferably SiO2, which have a median diameter of from 2 to 10 ?m and have a SPAN98 of ?2, and the overlayer (A) comprising a polyester which has isophthalic acid units, feature in particular low opacity, high transparency, low gloss of the overlayer (A) and high processing reliability, and are therefore suitable as flexible packaging films even for use on high-speed packaging machinery.

Abstract: The invention relates to a transparent, biaxially oriented polyester film composed of at least one base layer (B) which comprises at least 80% by weight of thermoplastic polyester, and of, applied to this base layer (B), a transparent, high-gloss outer layer (A). The outer layer (A) of the invention comprises a specific pigment system which provides improved winding of the film and leads to a highly transparent film with a high-gloss surface (A). The invention further relates to a process for producing the film. The film may be used as a packaging film, in particular for metalizing or for ceramic coating, or for applications in the industrial sector, e.g. as a substrate for stamping films, and in particular to its use on high-speed packaging machinery.

Abstract: The invention relates to an opaque, biaxially oriented polyester film comprising at least one base layer, characterized in that at least this base layer contains a cyclic olefin copolymer (COC) in a concnetration of 2 to 60 wt. % in relation to the base layer, the glass transition temperature of said cyclic olefin copolymer (COC) being 70 to 270° C.; and in that at least one surface is provided with a coupling agent.

Abstract: The invention relates to a transparent, biaxially oriented polyester film which comprises at least 80% by weight of thermoplastic polyester and also comprises an amount in the range from 0.05 to 0.5% by weight of a specific pigment system. The invention further relates to a process for producing the film. The film can be used as a packaging film, or for metalizing or ceramic coating, and in applications in the industrial sector, as a substrate for stamping foils.

Abstract: The invention relates to a multilayer, oriented film, in which at least one layer comprises a polyester which comprises an additive which, on irradiation with electromagnetic radiation, forms metal nuclei on which further metal can be deposited in further steps of the process. The invention further relates to a process for the production of this film and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, and film-based circuits of any type.

Abstract: The invention relates to a single-layer, oriented polyester film where the polyester comprises an additive which on irradiation with electromagnetic radiation forms metal nuclei on which further metal can be accumulated during further steps of the process. The invention further relates to a process for producing this film and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, and film-based circuits, of any type.

Abstract: White, biaxially oriented polyester films which have a base layer B which comprises a thermoplastic polyester such as polyethylene terephthalate, and which comprise substantially only TiO2 as a white pigment, whose R value is less than 43 daN/mm2, whose emax ratio is less than 2.5 and at least one of whose two surfaces of the film has been provided with an acrylate-containing coating, are particularly tear-resistant and do not tend to delamination and are therefore suitable in particular as lid films for food containers, for example yoghurt cups. A process is described for producing the films.

Abstract: The invention relates to a multilayer, transparent, biaxially oriented polyester film having at least one base layer B composed of a thermoplastic polyester, at least one overlayer A coextruded on the base layer B and at least one acrylic coating D which is applied to the film as an aqueous dispersion. The invention further relates to a process for producing the film and to its use.

Abstract: The present invention relates to an opaque, white UV-stabilized low-flammability film with a thickness of from 10 to 500 ?m whose principal constituent is a crystallizable thermoplastic. It also comprises at least barium sulfate as pigment, at least one flame retardant, at least one UV stabilizer as light stabilizer and at least one optical brightener. The barium sulfate and/or the optical brightener and/or the flame retardant and/or the UV stabilizer here is either incorporated directly into the thermoplastic when the polymer is prepared or fed to the thermoplastic as a masterbatch during film production.