White, biaxially oriented polyester film

Details White, biaxially oriented polyester film White, biaxially oriented polyester film

2006-09-05

2006-09-05

Chen, Vivian (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S480000, C428S483000, C428S910000, C526S303100, C526S307400, C526S307600, C526S317100, C526S318500, C264S288400, C264S289300, C264S289600, C264S290200

Reexamination Certificate

active

07101605

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 TiO2as a white pigment, whose R value is less than 43 daN/mm2, whose emaxratio 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.

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Schmitz, Peter et al., “Films.” Ullmann's Encyclopedia of Industrial Chemistry, 5th Ed., vol. A11 (1988), pp. 85-95, 108-110.
Werner, Eberhard et al., “Polyester, Films.” Encyclopedia of Polymer Science and Engineering, vol. 12 (1988), pp. 193-216.

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