Food packaging and method for treating the same
AssigneeTetra Laval Holdings & Finance S.A.
InventorsUlf Ringdahl, Majlis Parsson
Life of this patent
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Abstract
A method for heat preservation of a container filled with material is accomplished by means of heating and a pressure which is maintained during the holding time of the preservation process. The container of a material of laminate type is, after the holding time of the heat preservation, subjected to a supporting pressure during the cooling time of the process. A container intended to contain goods for heat preservation by means of heating and pressure comprises a base layer (1), an inner layer (3), and a barrier layer (4) between the base layer and the inner layer, and at least one layer consists of a plastic with memory.
Claims11
A method for heat preserving a laminated container filled with foodstuff comprising heating said filled container constructed of a laminated material comprising at least one plastic layer with memory selected from the group consisting of polyolefins, polyesters, polyamids, polyvinyl alcohols, polycarbonates, and acrylic polymers under pressure wherein said layer becomes deformed and locked in form and retaining the resulting deformed shape during cooling of the preservation process by applying a supporting pressure during said cooling.
Dependencies are inferred from the claim text.