Automatic bubble blower for orientation film lines

Details Automatic bubble blower for orientation film lines Automatic bubble blower for orientation film lines

B - Operations, Transporting

29

C

B29C 55/28 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2077941

The present invention relates to an automatic bubble blower for tubular orientation film lines. More specifically the invention relates to an apparatus for blowing the isolated bubble for biaxially stretch orienting thermoplastic flexible film comprising a high flow fluid conduit having a proximal end for introducing a high pressure fluid, and a distal end substantially perpendicular to said proximal end and having attached to said distal end, a bullet through which the high flow fluid may pass into the interior of the tubular thermoplastic film tape, a cutting device such as a rotating knife located on said high flow fluid conduit, and an automatic bubble blowing control system means.

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