Carbon dioxide atmosphere modifiers for packaging

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 81/20 (2006.01) A23L 3/3409 (2006.01) A23L 3/3418 (2006.01) A23L 3/3427 (2006.01) B65D 81/26 (2006.01)

Patent

CA 2332843

A device or sachet (3) for maintaining or modifying the atmosphere in a package suitable for meat, beef, lamb, pork, etc. the device including at least two containing layers (4, 5), a moisture activated chemical substance (6) contained by the containing layers, and at least one absorbent layer (7). Moisture within the package is soaked up by the absorbing layer (7). The moisture is then transferred from the absorbing layer to permeate through a micro-porous layer (5) as water vapour and activate the chemicals (6). The gas produced by the chemicals (6) then passes through the sachet and into the package's atmosphere. This modifies the atmosphere to ensure that there is an adequate quantity of CO2 for achieving the desired shelf life of the packaged food.

L'invention concerne un dispositif ou sachet (3) pour maintenir ou modifier l'atmosphère dans un emballage de viande de boeuf, d'agneau, de porc, etc. Le dispositif inclut au moins deux couches de confinement (4, 5) contenant une substance chimique (6) activée par l'humidité, et au moins un couche absorbante (7). L'humidité à l'intérieur de l'emballage est absorbée par la couche absorbante (7). Cette humidité est ensuite transférée à partir de la couche absorbante pour filtrer à travers une couche microporeuse (5) sous forme de vapeur d'eau et activer les substances chimiques (6). Le gaz produit par les substances chimiques (6) passe ensuite à travers le sachet et pénètre dans l'atmosphère de l'emballage, ce qui modifie l'atmosphère de sorte qu'il y ait une quantité suffisante de CO¿2? pour assurer la durée de conservation de l'aliment emballé.

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