Packaging material and packaging product

Details Packaging material and packaging product Packaging material and packaging product

B - Operations, Transporting

65

D

B65D 81/34 (2006.01) B65D 65/28 (2006.01) B65D 77/22 (2006.01) B65D 81/24 (2006.01)

Patent

CA 2419614

A packaging material is provided that can provide a packaging bag or container cover in which the contents is shielded from the atmosphere and tightly sealed, a small hole is formed in the appropriate locations, without special processing of the heat seal portion, and the internal pressure is maintained with high stability at a level above the normal pressure. The packaging material is suitable, for example, for heating in a microwave oven. The packaging material uses a film in which a heat sealing agent (4) with a low melting point is applied to a prescribed zone of an oriented film (2) made of a synthetic resin, a cutting line (5) is cut in the oriented film (2) made of a synthetic resin in the form of a solid or broken line passing through the zone coated with the heat sealing agent (4), and a cast film (3) made of a synthetic resin and having heat sealing properties is affixed to the oriented film (2) made of a synthetic resin. Such film is used for a packaging bag (1) or a container cover.

L'invention concerne un matériau d'emballage pouvant constituer un sac d'emballage ou un matériau de couverture pour un récipient, adapté pour être utilisé dans un four électronique, isolant de façon hermétique le contenu d'un élément extérieur, éliminant la nécessité d'appliquer un traitement spécial à une partie thermoscellée, comprenant de petits orifices à l'endroit approprié, et maintenant de façon stable une pression interne à une pression normale ou supérieure. Un agent thermoscellant (4) à faible point de fusion est appliqué sur des positions spécifiques d'un film (2) étiré de résine synthétique. Des lignes (5) de découpe sont gravées sur le film (2) étiré de résine synthétique, des lignes pleines ou en pointillé passant sur les zones recouvertes de l'agent thermoscellant (4). Un film (3) non étiré de résine synthétique thermoscellé est immobilisé sur le film (2) étiré de résine synthétique, le film ainsi obtenu pouvant être utilisé comme sac (1) d'emballage ou matériau de couverture du récipient.

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