Improvements in or relating to containers and permeable films

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/22 (2006.01) C08J 5/18 (2006.01) C08K 3/36 (2006.01) C08K 5/09 (2006.01) C08K 5/098 (2006.01)

Patent

CA 2618151

A permeable film or container for use in extending the storage life of a foodstuff or produce is provided. The film or container is formed from a plastics component, a porous component having a particle size smaller than the thickness of the film, and an acid component selected from at least one carboxylic acid compound in free or salt form. The permeable film is adapted for controlling the environment surrounding the foodstuff to reduce its respiration rate or senescence by controlling the transfer of gases, particularly oxygen and carbon dioxide, and build up of moisture. In one preferred embodiment the present invention provides a permeable film for use in the storage of a foodstuff, formed from a polymer component, a clay activated basl)e component, and sorbic acid in free or salt form.

L'invention concerne un film perméable ou un emballage destiné à être utilisé pour allonger la durée de conservation d'un aliment ou d'un produit. Le film ou l'emballage est formé à partir d'un composant en matière plastique, d'un composant poreux ayant une taille des particules inférieure à l'épaisseur du film et d'au moins un composant acide sélectionné parmi des composés acides carboxyliques sous forme libre ou sous forme de sel. Le film perméable est adapté pour contrôler l'environnement autour de l'aliment pour réduire son taux de respiration ou sa sénescence en contrôlant le transfert des gaz, en particulier de l'oxygène et du dioxyde de carbone, et l'accumulation d'humidité. Dans un mode de réalisation préféré la présente invention concerne un film perméable destiné à être utilisé lors du stockage d'un aliment, formé à partir d'un composant polymérique, d'un composant à base d'argile activée et d'acide sorbique sous forme libre ou sous forme de sel.

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