A collapsible bag for stacking and method thereof

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 7/00 (2006.01) B31B 19/74 (2006.01) B65B 7/04 (2006.01) B65D 88/16 (2006.01)

Patent

CA 2379837

A collapsible bag (10) which is adapted to have another bag stacked thereon when the collapsible bag is filled with material. The collapsible bag includes a main body (12), a bottom portion (14), and a top portion (16). The main body defines a plurality of vertical sections (A-E) to provide columnar support for holding the bag upright when the vertical sections are substantially filled with material. The botton portion (14) depends from the main body (12) and includes at least one bottom seal (28) for closing the bottom portion, wherein the bottom portion defines a substantially planar base. The top portion (16) extends from the main body (12) at an end opposite the bottom portion. The top portion includes a top seal (34) for closing the top portion. The top portion (16) defines an interior space (F) within the bag between the top seal (34) and an imaginary fill line (36). The top portion (16) also includes a vent (38) between the top seal (34) and the fill line (36), whereby air within the interior space (F) is vented to the atmosphere in response to downward pressure on the top portion (16) to collapse the bag onto its contents. A substantially planar top surface is formed along the fill line (36) to facilitate stacking the bag.

L'invention concerne un sac pliable (10) adapté pour recevoir un autre sac en gerbage lorsqu'il est rempli de matériau. Le sac pliable comprend un corps principal (12), une partie de fond (14) et une partie supérieure (16). Le corps principal délimite plusieurs sections verticales (A-E) assurant un support colonnaire pour maintenir le sac droit lorsque les sections verticales sont sensiblement remplies de matériau. La partie de fond (14) est tributaire du corps principal (12) et inclut au moins un élément de fermeture du fond (28) servant à fermer la partie de fond, laquelle délimite une base sensiblement planaire. La partie supérieure (16) s'étend du corps principal (12) à une extrémité opposée à la partie de fond. La partie supérieure (16) délimite un espace intérieur (F) du sac situé entre la fermeture supérieure (34) et une ligne de remplissage imaginaire (36). La partie supérieure (16) comprend également un orifice d'aération par lequel l'air contenu dans l'espace intérieur (F) est évacué dans l'atmosphère lorsqu'une pression est exercée de haut en bas sur la partie supérieure (16) pour plier le sac sur les matériaux qu'il contient. Une surface supérieure sensiblement planaire est formée le long de la ligne de remplissage (36) pour faciliter le gerbage du sac.

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