Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1991-05-15
1992-06-30
Spruill, Robert L.
Package making
Progressively seamed cover web or web folds
With closing of web between package units
53 52, 156358, B65B 906
Patent
active
051252163
ABSTRACT:
A packaging machine comprises a strip feeder (13) and tube former (14) for heat-welding plastic film strip into a tube. First welding apparatus (15) weld between them the side edges of the strip while a feed line (11) inputs into the tube thus formed products (12) that are to be packaged. Second weld apparatus (16) welds transversely of the tube at intervals to isolate each product in a section of the tube, thus realizing the packaging. Characteristically the first (15) and second (16) welding apparatus are pressed against the strip parts to be welded by an actuator (33, 34, 36, 37, 44, 43) controlled by a control device (46) to exert a pressure which is a function of the speed of travel of the strip.
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Eurosicma S.r.l.
Moon Daniel B.
Spruill Robert L.
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