The present invention relates to a transparent, peelable polyester film incorporating at least one biaxially oriented polyester film (=base layer (B)) and at least one peelable covering layer (A) coated offline thereon, in which the covering layer (A) is at least 85 wt. % made up of a polyester of aromatic and aliphatic dicarboxylic acids and aliphatic diols, and the arithmetic mean value of the absolute ordinate values S.sub.b of the covering layer (A) is less than 300 nm and the reduced peak height S.sub.pk of the covering layer (A) is less than 700 nm. The invention further relates to a production process for this peelable film and use thereof as sealing film for APET and/or RPET meal trays.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

A composite film comprising a of amide substrate layer having a first and second surface, and a primer coating layer disposed on the first surface of the substrate layer, wherein the primer coating layer is derived from a composition comprising an acid copolymer resin, an organic crosslinker and an acid catalyst. A heat-sealable coating is applied on the primer.

A composite film comprising a of amide substrate layer having a first and second surface, and a primer coating layer disposed on the first surface of the substrate layer, wherein the primer coating layer is derived from a composition comprising an acid copolymer resin, an organic crosslinker and an acid catalyst. A heat-sealable coating is applied on the primer.

The invention provides a laminated film. The laminated film includes a polyester substrate film, and a coating layer on/over at least one surface of the substrate film. The coating layer includes a resin composition including a resin having an oxazoline group. The laminated film has an inorganic thin-film layer on/over the coating layer, and a protective layer that has a urethane resin and has an adhesion amount of 0.15 to 0.60 g/m.sup.2 on/over the inorganic thin-film layer. The laminated film shows a total reflection infrared absorption spectrum having a ratio P1/P2 ranging from 1.5 to 3.5 wherein P1 is the intensity of a peak having an absorption maximum in a range of 1530±10 cm.sup.−1, and P2 is that in a range of 1410±10 cm.sup.−1. The laminated film further has an oxygen permeability of 5 ml/m.sup.2.Math.d.Math.MPa or less under conditions of 23° C.×65% RH.

The invention provides a laminated film. The laminated film includes a polyester substrate film, and a coating layer on/over at least one surface of the substrate film. The coating layer includes a resin composition including a resin having an oxazoline group. The laminated film has an inorganic thin-film layer on/over the coating layer, and a protective layer that has a urethane resin and has an adhesion amount of 0.15 to 0.60 g/m.sup.2 on/over the inorganic thin-film layer. The laminated film shows a total reflection infrared absorption spectrum having a ratio P1/P2 ranging from 1.5 to 3.5 wherein P1 is the intensity of a peak having an absorption maximum in a range of 1530±10 cm.sup.−1, and P2 is that in a range of 1410±10 cm.sup.−1. The laminated film further has an oxygen permeability of 5 ml/m.sup.2.Math.d.Math.MPa or less under conditions of 23° C.×65% RH.

Disclosed is a multilayered film that includes a core layer that includes one or more polymers, wherein the core has a first side and a second side and is optionally oriented. Further, the multilayered film includes a sealing layer comprising a primer and a sealing coating, wherein the primer has a primer coating weight from 0.05 to 0.5 g/m.sup.2 and is located between the first side of the core and a first side of the sealing coating, wherein the sealing coating has a sealing coating weight from 0.5 to 20.0 g/m.sup.2, wherein the multilayered film has a seal strength of at least 1 kg/in at 120° C. In various embodiments, the films showed outstanding seal strength, hot tack for both clear and white films over a broad temperature range, seal integrity under the Skye test, low blocking, and other desirable performance metrics.

A laminate film includes a substrate layer; and a metal oxide layer which is provided on one surface or both surfaces of the substrate layer and contains a metal oxide. Further, the oxygen permeability measured under defined conditions is 20 ml/m.sup.2.Math.day.Math.MPa or less and the water vapor permeability measured under conditions of a temperature of 40° C. and a humidity of 90% RH is 2.5 g/m.sup.2.day or greater. In addition, when the Kα beam intensity of a metal constituting the metal oxide which is obtained by performing fluorescence X-ray analysis on the metal oxide layer is set to A and the Kα beam intensity of the metal which is obtained by performing fluorescence X-ray analysis on a metal layer formed of the metal constituting the metal oxide is set to B, A/B is equal to or greater than 0.20 and equal to or less than 0.97.

The present invention is directed to a thermoplastic packaging film coated with an antimicrobial coating, a method for the preparation of the coated film and packaging articles made with the film.