Flexible bags – With venting or ventilation means – Opening in bag material
Patent
1989-03-02
1991-06-18
Garbe, Stephen P.
Flexible bags
With venting or ventilation means
Opening in bag material
229 8711, 383 58, 426113, 426129, 426412, B65D 3301
Patent
active
050245384
ABSTRACT:
A packaging bag, in particular for cooked ham, made of thermoweldable material and provided, on at least one of its walls, with a drainage hole. The inside of the bag also includes a drainage valve secured at the wall of the bag. The drainage valve comprises a disc of a plastic material, and is provided with a plurality of radial, spaced ribs projecting from its surface. The ribs face the internal surface of the wall of the bag, and the wall is secured to the ribs by thermowelding. The center zone of the disc will match with the center zone of the drainage hole.
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