Method for producing bags comprising closure profiles actuated by a slider
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United States of America Patent
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-
Nov 12, 2002
Grant Date -
N/A
app pub date -
Jan 4, 2000
filing date -
May 5, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for automatically making bags equipped with matching closure profiles comprising the steps of: unwinding a supply of at least a film for forming the bag walls; unwinding a supply of closure assembly comprising a W-shaped support sheet, constituting an inner U-shaped tear band provided on its inner surface opposite respectively the matching closure profiles, and the external lateral webs extending beyond the closure profiles and the U-shaped inner band, the closure assembly being further pre-equipped with a series of sliders actuating the closure profiles distributed over the length of the unwinding closure assembly; and fixing the resulting closure assembly via the external lateral webs on the film forming the bag walls.
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