Method for the manufacture of bags, that includes cuts, and the corresponding bag
AssigneeS2F Flexico
InventorAntony Roger
Life of this patent
Estimating the term…
Abstract
The invention concerns a method for the manufacture of packaging bags (2), which includes a step that consists of: forming at least one bag (2) in a scrolling film (1), welding, onto the scrolling film, of opening and closing zippers (3) that include a series of operating sliders (4), characterised in that it includes a step that consists of effecting at least one cut (7) in the zippers (3), where the length of the cut (7) is greater than the length of each slider (4). The invention also concerns a bag made using the method.
Claims4
A method for the manufacture of packaging bags (2) which includes a step that consists of:
- forming at least one bag (2) in a scrolling film (1),
- welding, onto the scrolling film, of opening and closing zippers (3) that include a series of operating sliders (4),
- making at least one cut (7) in the zippers (3), with the length (70) of the cut (7) being greater than the length (40) of each slider (4),
- characterised in that it includes a step that consists of:
- ejecting a slider (4) from the zippers (3) by means of a cut (7).
A method according to the preceding claim, in which the step for cutting the zippers (3) is performed regularly along the zippers, with each cut (7) being separated from the other cuts (7) by a distance that is a multiple of the pitch (6) of the bags (2).
A method according to one of the preceding claims, which also include a step that consists of positioning a slider close to a cut (7) on the zippers (3).
A method according to one of the preceding claims, in which the ejection step is executed when there is more than one slider (4) on the zippers (3) for a bag (2).
Dependencies are inferred from the claim text.