Apparatus for making quadruple profile plastic tubing for bags

Details Apparatus for making quadruple profile plastic tubing for bags Apparatus for making quadruple profile plastic tubing for bags

B - Operations, Transporting

31

B

93/37

B31B 37/00 (2006.01)

Patent

CA 1245499

ABSTRACT Apparatus for making flexible plastic bags with integral pressure interlocking rib and groove elements on the confronting top edges, comprises an extruder for extruding a continuous tube with pairs of closely spaced interlocking elements on the surface of the tube, the total pairs being a multiple of 2 with at least 4 pairs on the tube, a slitter for slitting the tube lengthwise between profiles of alternate pairs, and a folder for folding the tube between each adjacent pair and for bringing the profile adjacent the slit over onto the closest profile of the pair which has not been slit.

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