Device for varying the opening between the welding element and the counter-welding element in packaging machines
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United States of America Patent
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-
Feb 27, 1990
Grant Date -
N/A
app pub date -
May 31, 1988
filing date -
Jun 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In machines for the continuous packaging of products inside a film of a plastic material, folded above the products, so as to form a continuous tubular wrapping, a device for changing the opening between the welding element and the counter-welding element permits the operating distance between the welding elements to be changed as a function of the height of the products in course of packaging, thus ensuring the highest packaging speed for both low- and high-thickness products.
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