Abstract: Embodiments herein relates to a Bisphenol A-free multi-layer biaxially oriented polyester (BOPET) film, for lamination on metal sheets, which could be used for food containers. The BOPET film has at least one outer release layer, which aids in the release of food, such as a high protein food source, when food is cooked and sterilized in direct contact with the outer release layer. The BOPET film can be laminated to metals used in the manufacture of food containers with the outer release layer being exposed to allow a direct food contact between the surface of the outer release layer and food. More particularly, the invention relates to a novel outer release layer resin composition comprising an ultra high molecular weight siloxane polymer and a polyethylene trephthalate resin; and an alkali-metal phosphate and a phosphoric acid compound added, during polymerization of the outer release layer resin composition, as a catalyst/additive package to the ingredients forming the outer release layer resin composition.

Abstract: Biaxially oriented film and metal laminate composite thereof useful for manufacturing food containers with good resistance to blushing during steam sterilization, comprising a blend of PBT and PET and also incorporating color pigment comprising polar functional groups. The films possess improve resistance to trans-esterification during melt processing, resulting in enhanced crystallinity levels present in the laminated film which leads to little or no blush discoloration during steam sterilization.

Abstract: Biaxially oriented film and metal laminate composite thereof useful for manufacturing food containers with good resistance to blushing during steam sterilization, comprising a blend of PBT and PET and also incorporating color pigment comprising polar functional groups. The films possess improve resistance to trans-esterification during melt processing, resulting in enhanced crystallinity levels present in the laminated film which leads to little or no blush discoloration during steam sterilization.

Abstract: Embodiments herein relates to a Bisphenol A-free multi-layer, such as a biaxially oriented polyester (BOPET) film, for lamination on metal sheets, which could be used for food containers. The BOPET film has an outer release layer, which aids in the release of food, such as a high protein food source, when food is cooked and sterilized in direct contact with the outer release layer. The BOPET film can be laminated to metals used in the manufacture of food containers with the outer release layer being exposed to allow a direct food contact between the surface of the outer release layer and food. More particularly, the invention relates to a novel outer release layer resin composition comprising an ultra high molecular weight siloxane polymer and a polyethylene trephthalate resin.