Self-venting cover for heatable food package

Details Self-venting cover for heatable food package Self-venting cover for heatable food package

B - Operations, Transporting

65

D

B65D 77/22 (2006.01) B65D 51/16 (2006.01)

Patent

CA 2569303

A self-venting cover (1) for a heatable food package comprises a sheet of film (3) having a slit (5) formed therein to permit the passage of steam therethrough. A label (4) is secured to the film (3) for controlling the flow of steam through the opening, the label (4) comprising a sheet of material having a first region (7) secured to the film in an area remote from the slit (5) and having a second elongated (6) region covering the slit (5). The elongated region (6) is only partially secured to the film (3) and forms a vent passage (11, 12) between the unsecured portion (10) of the elongated region (6) and the film (3) itself, which vent passage (11, 12) extends from the slit (5) towards the peripheiy of the label to permit controlled venting of steam from the opening.

La présente invention concerne un couvercle auto-ventilé (1) pour emballage de nourriture chauffable comprenant une feuille de film (3) ayant une fente (5) formée à l~intérieur pour permettre le passage de la vapeur à travers elle. Une étiquette (4) est fixée au film (3) afin de contrôler le flux de vapeur à travers l~étiquette, l~étiquette (4) comprenant une feuille de matière ayant une première région (7) fixée au film dans une zone éloignée de la fente (5) et ayant une seconde région allongée (6) couvrant la fente (5). La région allongée (6) est seulement fixée en partie au film (3) et forme un passage d~échappement (11, 12) entre la partie non fixée (10) de la région allongée (6) et le film (3) lui-même, ledit passage d~échappement (11, 12) s~étendant depuis la fente (5) en direction de la périphérie de l~étiquette pour permettre l~échappement contrôlé de vapeur hors de l~ouverture.

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