Toray Plastics (america), Inc.

Kari Shoolbraid

Takafumi Sakai

Jan K Moritz

Gerardo Eugenio Rada Murga

The present disclosure is directed to peelable, heat-sealable lidding films for containers of diverse polymer compositions storing various products such as foodstuffs and pharmaceuticals. The lidding films disclosed herein can be heat-sealed to crystalline polyester trays (CPET), easily peeled, and contain improved antifogging performance by incorporating a non-migratory antifogging additive into the heat sealable layer of the film without deteriorating seal strengths.

Antifog polyester lidding film for CPET trays

Coextruded biaxially oriented sealable polyester films having at least one heat-sealable layer and at least one base layer. The heat-sealable layer has a sealing temperature on APET or PETG trays of at least 250&#xb0; F. (121&#xb0; C.) for seal strength of at least 1,500 g/in of film width, and a static and dynamic coefficient of friction of 0.28 or less. The heat-sealable layer includes one or more amorphous polyesters and one low melting point crystallizable polyester, such as polybutylene terephthalate (PBT).

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Pawtucket, RI, United States of America

Kari Shoolbraid