Importance

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Abstract

The invention relates to a method for thermal processing of products contained in a container (2) and a bag obtained by executing said process. According to the invention, the method consists of: a) forming during a thermoforming step at least one boss in the inner zone of the protective film delimited by the peripheral zone for fixing the film to an edge of the container, b) boring a degassing orifice in the inner zone of the film, c) placing the valve on the film above the degassing orifice, d) fixing the peripheral zone of the film to the edge of the container, previously filled with products, e) subjecting the container now filled and closed container to thermal processing, during which the valve opens when the temperature of the products reaches a first given value, allowing degassing of the products, and on completion of which the valve closes when the temperature of the products reaches a second given value. The shapes and dimensions of the boss are determined as a function of the products and thermal processing resulting in the container deforming essentially at the level of said boss after cooling.

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First Claim