Packaging method using thermoplastic materials and package obtai

Details Packaging method using thermoplastic materials and package obtai Packaging method using thermoplastic materials and package obtai

1996-02-20

1998-04-28

Tentoni, Leo B.

Food or edible material: processes, compositions, and products

Packaged or wrapped product

53467, 53478, 53485, 2643281, 264544, 426129, 426392, B29C 4500, B29C 5100, B65B 728, B65D 8500

Patent

active

057441812

ABSTRACT:
The invention is a packaging method including providing a tray with heat-sealable rims; loading the tray with a product to be packaged; applying a lid on top of the tray, the tray rims and lid having contacting surfaces being made of materials which can be heat bonded to each other at a lid sealing station to effect sealing of the lid to the tray rims, the lid comprising a biaxially oriented heat-shrinkable film having a maximum shrink force, measured at the temperature in the lid sealing station during sealing, of 0.05 kg/cm in at least the transverse direction; and heat-sealing the lid to the tray rims. A modified atmosphere can be introduced between the lid and the tray. The invention is also a package including a product; a tray in which the product is placed, the tray having heat-sealable rims; and a lid heat-sealed to the tray rims, wherein the lid comprises a biaxially oriented heat-shrinkable film having a maximum shrink force of 0.05 kg/cm in at least the transverse direction.

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