Mitsubishi Polyester Film Gmbh

Oliver Klein

Herbert Peiffer

Gottfried Hilkert

Lothar Bothe

Matthias Konrad

Holger Kliesch

Bodo Kuhmann

Martin Jesberger

Ingo Fischer

Dagmar Klein

Franz Hora

Andreas Bork

Petr Kolar

Manfred Wiederhold

The invention relates to a polyester film incorporating at least one UV stabilizer of the formula I, in which

Single- or multilayer, stabilized polyester film

The present invention relates to a biaxially oriented polyester film, which Preferred dyes are anthraquinone dyes and perinone dyes; the polyester is preferably PET. After metallization or lamination, the film has a gold appearance, and is a suitable packaging material.

Amber-colored polyester film with particular suitability for metallization and steel-lamination

The invention relates to a biaxially oriented polyester film having a base layer (B) which comprises at least 80% by weight of a polyester comprised of from 55 to 90 mol % of units deriving from at least two aromatic dicarboxylic acids and of from 5 to 45 mol % of units deriving from at least one aliphatic dicarboxylic acid, where the total of the dicarboxylic-acid-derived molar percentages is 100. The film features ultimate tensile strength of &#x2266;100 N/mmand modulus of elasticity of &#x2266;3000 N/mm.

Polyester film with low mechanical strength

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/mmin 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.

Extrusion-coatable polyester film comprising poly(m-xyleneadipamide)

Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and has been provided on at least one side with an overlayer (A) which has been coated with a barrier layer (D), said barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity and very good barrier properties, in particular toward the passage of oxygen, and, as a consequence of their insensitivity toward moisture, are suitable as a packaging material for foods or other consumable items.

Polyester film having improved oxygen barrier, comprising poly(m-xyleneadipamide) and also an overlayer and a barrier coating, process for its production and its use

Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and which is coated on at least one side with a barrier layer (D), the barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity, and very good barrier properties, in particular with respect to oxygen passage, and are also suitable as packaging materials for foods or other consumable items as a consequence of their insensitivity toward moisture.

Polyester film having improved oxygen barrier, comprising poly(m-xyleneadipamide) and a barrier coating, process for its production and its use

Biaxially oriented polyester films which have a polyester-containing base layer (B) and a matt overlayer (A), and are characterized by the following features: a) the transverse shrinkage of the film is between 1 and 2.3%, b) the transverse linear expansion of the film during thermo-mechanical analysis is smaller than or equal to 0.2%, c) the matt overlayer comprises particles, preferably SiO, whose median diameter is from 2 to 10 &#x3bc;m and whose SPAN98 is smaller than or equal to 2, and d) the matt overlayer (A) comprises a polyester which has from 4 to 30 mol % of isophthalic acid units are notable in particular for low opacity, high transparency and low gloss of the overlayer (A), and are therefore suitable as flexible packaging films and for the purposes of hot lamination.

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Mainz, Germany

Oliver Klein