B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 75/00 (2006.01) B65D 75/26 (2006.01)
Patent
CA 2284920
A patch bag (14) comprises a heat-shrinkable bag comprising a tubular bag film (18), and a heat-shrinkable patch (22) comprising a patch film, the patch being adhered to the bag, the patch bag having a seal (26) which is through both the patches as well as through both lay-flat sides of the bag. The seal has a strength of at least 26 inches of water and/or the bag is an end seal bag in which the seal through the patches is the only seal across the bottom of the bag. A process for making the bag includes sealing an inside surface of the film tubing to itself, the sealing being carried out by applying heat to each of the patch outside surfaces, the heat being applied by a first means for heating and a second means for heating, the first and second means for heating being in alignment with one another, with the patches and bag tubing therebetween during sealing.
L'invention concerne un sac à pièce rapportée (14) qui comprend un sac thermorétrécissable ayant une pellicule sac tubulaire (18), et une pièce rapportée thermorétrécissable (22) sous forme de pellicule rapportée, la pièce rapportée adhérant au sac. Le produit est doté d'un scellement (26) qui traverse les pièces rapportées et les deux côtés à plat du sac. La résistance de scellement équivaut au moins à 26 pouces d'eau, et/ou le sac est à scellement terminal dans lequel le scellement traversant les pièces rapportées est le seul qui ferme le bas du sac. L'invention concerne aussi un procédé de fabrication du sac, qui consiste à sceller une surface interne de la pellicule tubulaire sur elle-même, le scellement résultant d'une application de chaleur sur chacune des surfaces externes des pièces rapportées. Ladite application de chaleur provient de premier et second systèmes chauffants, alignés l'un sur l'autre, tandis que les pièces rapportées et le tube sac sont placés entre les deux systèmes aux fins de scellement.
Boal Dilip K.
Chow Edgard
Depoorter Larry
Odabashian Robert A.
Wallington Craig
Cryovac Incorporated
Smart & Biggar
LandOfFree
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