Additive delivery laminate and packaging article comprising...

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/08 (2006.01) A22C 13/00 (2006.01) B32B 27/30 (2006.01) B32B 27/34 (2006.01)

Patent

CA 2574503

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.

La présente invention concerne un stratifié diffusant un additif conçu pour l'emballage d'un produit alimentaire cuit dans l'emballage même, l'additif étant transféré du stratifié vers le produit alimentaire. Le stratifié est constitué d'un substrat et d'une couche de diffusion d'additif. La couche de diffusion d'additif contient un polymère thermoplastique non hydrosoluble, un agent de durcissement du polymère, des granulés d'additifs contenant un colorant, un aromatisant et/ou un agent odorisant. L'agent de durcissement du polymère est mélangé avec le polymère thermoplastique non hydrosoluble. Le polymère thermoplastique non hydrosoluble est, de préférence, du polyisobutylène et l'agent de durcissement du polymère, est, de préférence, de la colophane de bois hydrogénée. L'agent de durcissement du polymère réduit la tendance du polymère thermoplastique non hydrosoluble à former des pattes ou à se transférer vers le produit alimentaire lors du démoulage du stratifié du produit alimentaire après cuisson, ainsi que le transfert vers l'additif puis vers le produit alimentaire.

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