Apparatus for making biaxially stretched tubularly extended film with transverse closure strip

Apparatus for extending film tube from high density polyethylene biaxially oriented in longitudinal or machine direction as well as in cross machine diameter-increasing direction, and for joining extruded closure strip carried helically on one wall of the tube correspondingly stretched as a result o...

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Bibliographische Detailangaben
Hauptverfasser:	VANERDEN, DONALD L
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Apparatus for extending film tube from high density polyethylene biaxially oriented in longitudinal or machine direction as well as in cross machine diameter-increasing direction, and for joining extruded closure strip carried helically on one wall of the tube correspondingly stretched as a result of the biaxial stretching to which the film of the tube is stretched. The closure-strip-carrying, biaxially oriented tube is adapted to be converted into a ribbon sheet form with the closure strip extending as individual closure strip sections across the ribbon sheet form at longitudinally spaced intervals, and adapted for making bags.