A laminate useful in the manufacture of ovenable grease resistant food
containers, which have the added advantage of good release from the food
products, particularly those containing high levels of starch and sugar.
The laminate of the present invention includes a substrate, preferably of
a paperboard, a layer of grease resistant material, such as polyamide,
polyester, polyvinyl chloride, polytetrafluoroethylene, or polyvinyl
alcohol, etc., or nylon, a tie layer of low density polyethylene or
linear low density polyethylene modified with maleic anhydride, and a
food contact release layer comprising a blend of polypropylene and
polymethylpentene. In the preferred embodiment, the grease resistant
layer, the tie layer and the food contact release layer are coextruded
onto a paperboard substrate.
