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OwnerHolger Eggers, Andreas Gasse +1inventors
InventorsHolger Eggers, Andreas Gasse, Rudi Klein
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Described is a thermoformable film comprising at least one layer (I) of polyamide containing solid anisotropic fillers (A) and individual spherulites. The anisotropic fillers (A) of the layer (I) of the thermoformable film, in a number-weighted average of all the dispersed constituents of the anisotropic fillers (A), have a dimension of no more than 10 m in at least one first direction (r1) freely selectable for each dispersed constituent and, in at least one second direction (r2) perpendicular to the first direction (r1), have a dimension of at least 50 times the dimension in the first direction (r1). The individual spherulites in the layer (I) have a number-average distance from each other of no more than 50 nm, and the cores of a majority of the individual spherulites in the layer (I) are free of a filler particle of the anisotropic fillers (A). Also described is a method of preparing the thermoformable films of the present invention, and methods of using the films for, for example, packaging foodstuffs.
A thermoformable film comprising at least one layer of polyamide containing solid anisotropic fillers and individual spherulites, wherein, said anisotropic fillers in said layer have in at least one first direction a size, expressed as the number-weighted average size for all of the dispersed components of the fillers, of no more than 10 nm and in at least one second direction perpendicular to said first direction a size of at least 50 times the size in the first direction, the number-average distance between the individual spherulites in said layer is no more than 50 nm, and the cores of the majority of the spherulites do not consist of an anisotropic filler particle.
A process for producing a flat thermoformable film comprising at least one layer of polyamide containing solid anisotropic fillers, comprising:
Dependencies are inferred from the claim text.