High burst zipper assembly for large reclosable packages

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 33/25 (2006.01)

Patent

CA 2654568

The present disclosure relates to a high burst slider zipper (10) which allows for bottom filling of reclosable packages (100), such as large bags, and further provides increased resistance to damage from the dropping or shock loading of the filled package. This is achieved by providing a peel seal (24) or other frangible or separable connection between the zipper profiles, and by sealing a portion of one of the flanges to itself by a hard seal (30) above the peel seal. This causes the external forces on a bag from bottom filling or shock loading to be directed toward the hard seal and further directed so as to cause a shear force against the peel seal, thereby increasing the resistance of the package to external forces.

La présente invention concerne une fermeture à glissière très résistante à l'éclatement qui permet de remplir le fond d'emballages refermables, tels de grands emballages, et qui offre également une résistance accrue à toute détérioration induite par la chute ou la charge de choc de l'emballage rempli. Ceci est rendu possible par un joint pelable ou tout autre raccord friable ou séparable présent entre les profils de la fermeture à glissière et en scellant une partie de l'un des bords sur lui-même à l'aide d'un joint dur au-dessus du joint pelable. Dès lors, les forces externes, exercées sur un sac et générées lors du remplissage du fond du sac ou d'une charge de choc, sont dirigées vers le joint dur et ce, de manière à provoquer une force de cisaillement sur le joint pelable, ce qui permet d'accroître la résistance de l'emballage aux forces externes.

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