Preform and container for radiosensitive products and method...

B - Operations – Transporting – 29 – C

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B29C 49/06 (2006.01) B65D 1/02 (2006.01) B29C 47/06 (2006.01) B29C 49/22 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2651183

Preform, serving as a semi-finished product, for a container intended for containing products therein that are sensitive to radiation in particular light sensitive and food and dairy products, consisting of at least one base layer (1) made of a primary plastic base material, with a certain amount of additives (5) incorporated in it (1), characterised in that said preform (10, 20) is opaque over virtually the whole extent thereof, wherein a relatively low percentage of plastic additives (5) is incorporated to generate sard opaque appearance (22), so as to protect the inner space (9) thereof which is delimitated by it against external radiation (V1, V2) particularly electromagnetic radiation, more particularly light, under normal pressure condition.

Préforme servant de produit semi-fini, destinée à un contenant conçu pour contenir des produits sensibles aux rayonnements, notamment des produits sensibles à la lumière, des produits alimentaires et des produits laitiers. Ladite préforme est composée d'au moins une couche de base (1) réalisée dans un matériau de base plastique primaire, contenant une certaine quantité d'additifs (5) intégrés dans la couche de base (1). Ladite préforme (10, 20) est caractérisée en ce qu'elle est opaque sur l'essentiel de sa surface, un pourcentage relativement faible d'additifs plastiques (5) étant intégré afin de générer l'apparence opaque (22) de manière à protéger l'espace intérieur (9) renfermé par la préforme, contre les rayonnements extérieurs (V1, V2), notamment les rayonnements électromagnétiques, plus particulièrement la lumière, dans des conditions de pression normale.

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