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US 5,009,632 AGranted
Method and device for joining foil hoses
AssigneeKarl-H. Sengewald GmbH & Co. KG
InventorBernhard Kruessel
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AssigneeKarl-H. Sengewald GmbH & Co. KG
InventorBernhard Kruessel
Estimating the term…
A transverse-welding station [(12)] is provided for joining the hose parts [(11a, 11b)] of foil hoses [(11)] that are welded to bag lengths [(BL)] by transverse welds [(21, 22)]. In this station, the hose parts are superimposed such that the joining weld is laid exactly on the superimposed transverse welds [(22) ] of the two hose parts. This results in a joining of the hose ends that does not use adhesive tape and observes the pitch determined by the length of the bags. The invention provides a joining that is practically imperceptible and does not at all impair the quality of the bags made. In particular, the occurrence of single bags that would have to be considered as waste is avoided. The method is applicable for cutting out imperfections from a foil hose, as well as for connecting the beginning of one hose roll to the end of the preceding hose roll.
A method for joining a first tubular web and a second tubular web, each tubular web defining a plurality of bag portions having a predetermined pitch substantially defining a bag length and each tubular web having an end portion including at least one transverse weld, the method comprising the steps of:
A device for joining a first tubular web and a second tubular web, each tubular web defining a plurality of bag portions having a predetermined pitch substantially defining a bag length and each tubular web having an end portion including at least one transverse weld, wherein the transverse weld at the end portion of the first tubular web and the transverse weld at the end portion of the second tubular web are superimposed, the device comprising:
Dependencies are inferred from the claim text.