Apparatus for pulling tube ends open to form base squares of...

Details Apparatus for pulling tube ends open to form base squares of... Apparatus for pulling tube ends open to form base squares of...

B - Operations, Transporting

31

B

93/37

B31B 49/00 (2006.01) B31B 1/80 (2006.01)

Patent

CA 1194718

ABSTRACT Apparatus for pulling tube ends open to form base squares of cross-bottom sacks In apparatus for pulling tube ends open to form base squares in the production of large cross-bottom sacks, table plates are disposed parallel to the plane of the pulled open bases and separated from another by a gap through which a tubular web is feedable in a plane substantially perpendicular to the table plates. Suckers at both sides of the web pull the edges of the web end apart. The suckers are secured to carriages which are movable in parallel guides from a position in which they are pushed together to the pulled open position of the base.

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