Machine for welding a moving web of material by means of a movable welding tool
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United States of America Patent
Stats
-
Nov 24, 1981
Grant Date -
N/A
app pub date -
May 28, 1980
filing date -
Jun 1, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for welding a web of material which is being moved in its longitudinal direction is disclosed. The apparatus comprises a movable welding tool which welds along a line of contact against the periphery of a rotatable counter-roller, and a drive means which imparts rotary movement to the counter-roller and moves the welding tool periodically into its welding position. The apparatus further comprises a means for superimposing on the counter-roller rotation an additional rotation such that the point of weld contact on the counter-roller is distributed equally around the periphery of said roller.
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