Hermetically sealed package, and method and machine for...

Details Hermetically sealed package, and method and machine for... Hermetically sealed package, and method and machine for...

B - Operations, Transporting

65

D

B65D 77/20 (2006.01) B65B 11/50 (2006.01) B65B 11/52 (2006.01) B65D 75/28 (2006.01)

Patent

CA 2259904

A hermetically sealed package comprises a substantially rigid base (3; 22), preferably a tray, a product (2; 23) to be packaged, which in a preferred embodiment is higher than the tray side walls (5), supported on the tray (3; 22), and a stretch film (8; 15) welded to the substantially rigid base (3; 22) along a sealing line so as to form a hermetically sealed enclosure for the product. In a method and a machine for manufacturing a hermetically sealed package (1; 101) a stretch film (8; 15) is stretched by means of a stretching frame (17) against a base (3; 22) along a pressure line and is heat welded by means of a sealing frame. (18) to the base (3; 22) along a sealing line so as to form a hermetically sealed enclosure for a product (2; 23).

L'invention concerne un emballage scellé hermétiquement. Cet emballage comprend une base sensiblement rigide (3; 22), de préférence, un plateau, et supporté sur ce dernier (3; 22) un produit (2; 23) à emballer, qui dans un mode de réalisation préféré est plus haut que les parois latérales (5) du plateau. Il comprend également un film étirable (8; 15) soudé à la base sensiblement rigide (3; 22) le long d'une ligne de scellage, de manière à former une enveloppe scellée de manière hermétique pour le produit. Dans un procédé et une machine pour fabriquer un emballage scellé hermétiquement (1; 101), un film étirable (8; 15) est étiré au moyen d'un cadre d'étirage (17) contre une base (3; 22), le long d'une ligne de pression, et est thermosoudé, au moyen d'un cadre de scellage (18), à la base (3; 22) le long d'une ligne de soudage. On obtient ainsi une enveloppe hermétiquement scellée pour un produit (2; 23).

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