Finishing assembly and method for a vertical form, fill and seal machine
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United States of America Patent
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N/A
Issued Date -
Jul 18, 2002
app pub date -
Jan 18, 2001
filing date -
Jan 18, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A stripping/sealing assembly and method for a vertical form, fill and seal machine. The stripping assembly comprises a rotatable master axis including a pair of oppositely rotating primary axes. A stripper may be associated with each of the primary axes, each stripper being located in a mount. A slave axis, comprising a pair of rotatable cranks mounted on central axes, is provided for displacement of the mounts in unison toward and away from the primary axes during rotation. By judicious retarding and then accelerating of the rotation of the cranks in relation to the primary axes, the stripper/sealer dies traverse linear paths along the tubular film to strip and seal the tubular film. The method provides adjustable seal dwell time, stripping and seal cooling time all programmable in software.
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