Patent ID: 8641278
Filing Date: 2014-02-04
Classification: A44B,B65D,Y10T

Abstract:
1. A bag of flexible material, comprising an opening, the bag comprising a device for closing the opening of the automatically gripping hook-in-hook type, comprising a first element having hooks and a second element having hooks, the hooks of the two elements engaging with each other in order to bring about the closure of the opening, the first element having hooks comprising a base strip and at least two parallel rows of hooks produced from the strip, and the second element having hooks comprising a base strip and at least one row of hooks produced from the strip, wherein: each hook of the first element is delimited over the entire height thereof, from the base strip as far as the top thereof, by two mutually opposed planar surfaces which are transverse relative to the direction of the two rows of hooks; each hook of the first element comprises two right and left projection-like engagement portions which project laterally from a shank extending in a transverse direction relative to the direction of the rows and in opposite right and left directions; each hook of the first element has a thickness corresponding to the distance in the direction of the two rows of hooks between the two mutually opposed, planar surfaces in the region of the base strip; the spacing distance between two successive hooks of each of the at least two rows of the first element, measured in the region of the base strip in the direction of the two rows, or longitudinal direction, is greater than the thickness of each hook; the at least two rows of the first element are spaced apart from each other by a distance such that when hooks of the at least one row of the second element are inserted therebetween with their heads orientated in a direction opposite to the heads of the hooks of the first element, an engagement portion of at least a first hook of the second element is adapted to become engaged with an engagement portion of a hook from one row of the first element and another engagement portion of said at least first hook or an engagement portion of a second hook of said at least one row of the second element is adapted to become engaged with an engagement portion of a hook from another row of the first element adjacent to said one row.