B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
226/67
B65B 7/00 (2006.01) B65B 7/06 (2006.01) B65B 51/14 (2006.01)
Patent
CA 1201100
ABSTRACT APPARATUS FOR SEALING A LIQUID PACK An apparatus for sealing a liquid pack is described, wherein the supporting material consists of paper and is coated with plastics on at least one surface, comprising a pair of extending fingers (1, 1'), which can be inserted in the open end of the pack (35) to flatten the top edge thereof; a pair of welding jaws (3, 3') to seal the top folded seam strip (2); and a drive (21, 22; 24, 35) provided with guide surfaces (14). In order that a filled pack can be folded exactly along the creases made in the paper thereof and also imperviously welded instantly in one operation, so to speak in one cycle, the invention provides that each extending finger (1, 1') is constructed in strip form at its engaging end, with narrow edges which are rounded in cross section, that its longitudinal axis is perpendicular to the top folded seam strip (2), at least during its movement in the region of the initial position, and is driven by means of a cam (14), for movement in a plane located above the seam strip (2), and that each welding jaw (3, 3') is driven synchronously with the movement of the extending fingers (1, 1'), for rotation about a shaft (27, 27') in such a way that the jaw strips the seam strip (2) off the extending fingers (1,1'). (Figure 2)
421223
Ridout & Maybee Llp
Tetra Pak Developpement Sa
LandOfFree
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