Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1986-09-17
1987-11-03
Olszewski, Robert P.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493197, 493933, 383119, B31B 2316, B31B 2326, B65D 3008
Patent
active
047041013
ABSTRACT:
A seamless, puncture resistant bag is made by advancing a lay-flat seamless tube of thermoplastic film; forming an alternating series of fused-unfused segments along said lay-flat tube by internally fusing said lay-flat tube at regular intervals, the unfused segment length being approximately equal to the fused segment length; treating the external surface of the lay-flat tube to render said surface self adherent; periodically folding back the lay-flat tube towards its treated surface at the juncture between the leading fused-unfused segments of the lay-flat tube; pressing the folded portion of the lay-flat tube; and severing the folded portion from the tube.
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Lee, Jr. William D.
Olszewski Robert P.
Quatt Mark B.
Terrell William E.
Toney John J.
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