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专利名称：Arrangement for the separation of packing
containers
发明人：Kjell H. Martensson,Stig A. Lothman,Jan-Anders Holmgren
申请号：US05/6723申请日：19760525公开号：US04054074A公开日：19771018
摘要：Parallelepipedic packing containers are made and filled in succession by passinga continuous web of packaging material over a forming device which converts the webinto tubular form with an overlapped longitudinal seam. The tube is then filled with theintended contents, e.g., a liquid and is then divided off into individual packing containersby first pressing the tube transversely at longitudinally spaced intervals along broadzones and the opposite sides of the flattened tube are heat-sealed to each other alongtwo narrow sealing regions close to the opposite base lines of the flattened zone whilethe remaining portions of the flattened zone remain non-sealed. The filled portion of thepacking container between successive flattened zones is then reformed into the desiredparallelepipedic shape, and the packages are then separated from each other by cuttingthrough the non-sealed portion of the flattened zones thus leaving fins which are thenfolded down against the opposite side walls of the container to stiffen and reinforce thesame. The cutting of the double-walled, non-sealed flattened zone is done quite closelyto the narrow sealing regions and in such manner that the fins formed on each packagehave a single material thickness along substantially the full length of the sealing regions.
申请人：AB ZIRISTOR
代理机构：Pierce, Scheffler & Parket
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