Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
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United States of America Patent
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Jan 23, 1990
Grant Date -
N/A
app pub date -
Mar 9, 1988
filing date -
Mar 9, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for forming a tube and bag from a supply of thin thermoplastic film with the film being formed into tubular shape about a filling tube with the edges of the film brought together and joined solely by a zipper strip having reclosable pressure interlocking members thereon with the zipper strip preferably heat sealed to the film and the zipper strip having a web between the pressure interlocking members which provides a tamper-evident juncture between the edges of the film so that the web must be severed for access to the interior of a bag formed from the film, and individual bags formed from the continuous tube by filling the tube through the filling tube and cross-seaming and cutting individual bags from the continuous film tube.
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