Additive delivery laminate and packaging article comprising same

Abstract

An additive delivery laminate is suitable for packaging a food product which is cooked in the package, with an additive transferring from the laminate to the food product. The additive delivery laminate has a substrate and an additive delivery layer. The additive delivery layer contains a water-insoluble thermoplastic polymer, a polymer toughening agent, and additive granules containing a colorant, flavorant, and/or odorant. The polymer toughening agent is present in a blend with the water-insoluble thermoplastic polymer. Polyisobutylene is a preferred water-insoluble thermoplastic polymer, and hydrogenated wood rosin is a preferred polymer toughening agent. The polymer toughening agent decreases the tendency of the water-insoluble thermoplastic polymer to form legs or transfer to the food product upon stripping the laminate from the food product after cooking and transfer to the additive to the food product.

Dependencies are inferred from the claim text.