Patent ID: 7210848

Claim:
A combination of for opening/closing system a packaging bag comprising an opening formed in a wall of the bag, the opening delimited by edges of the wall, comprising: two first longitudinal elements, each one forming a means for guiding a sliding movement, one of the first longitudinal elements being connected; to an edge of the bag delimiting the opening and the other of the first longitudinal elements connected to another edge of the bag delimiting the opening; a slider, comprising: two second longitudinal elements, each forming a means for guiding a sliding movement, one of the second longitudinal elements engaging one of the first longitudinal elements and slideable with respect thereto, and the other of the second longitudinal elements engaging with the other of the first longitudinal elements and slideable with respect thereto; and a central wall connecting the two second longitudinal elements of the slider to one another; and a flat base piece including an opening and comprising the two first longitudinal elements, the flat base piece accommodating the slider and being fixed to the wall of the bag so that the opening in the flat base piece coincides with the opening formed in the wall of the bag, wherein the central wall substantially covers the entire opening included in the flat base piece in the closed position.