METHOD AND DEVICE FOR MANUFACTURING A CONTINUOUS WEB OF BAGLIKE PACKAGE BLANKS

WIPO Patent Application WO/2011/133102

A3

A method and a device for manufacturing a continuous bag-like package blank (24), which is produced by a plane plastic sheet (18) being unwound from a storage reel (19) of the sheet (18), the sheet being conveyed through an edge thickening equipment (1) and further to a folding device, to a welding device and to a slotting tool to obtain a continuous bag-like package blank (24), which, e.g., may be introduced into channels intended therefore in support arms in a packing machine, wherein the edge thickening equipment (1) comprises a process bed (17) over which the sheet (18) is conveyed, and that an extruder device (12, 13) having a first extruder nozzle (15) placed on the opposite side of the sheet (18) in relation to the process bed (17) is aligned and continuously extrudes a material bead (28) that is permanently attached to a first edge area (26) of the sheet, and that the extruder device (12, 13) comprises a second extruder nozzle (16) placed on the opposite side of the sheet (18) in relation to the process bed (17) is aligned and continuously extrudes a material bead (28) that is permanently attached to a second edge area (27) of the sheet (18) opposite the first edge area (26).

JOSTLER JAN (SE)
JOSTLER JOHAN (SE)

PCT/SE2011/050487

September 13, 2012

April 20, 2011

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PRONOVA AB (SE)
JOSTLER JAN (SE)
JOSTLER JOHAN (SE)

B29C48/08; B29C48/12; B29C48/325; B31B19/74; B31B19/90; B31B23/00; B65B9/08; B29C69/02

WO2004037665A1

2004-05-06

US5121997A	1992-06-16
EP0569301A1	1993-11-10
EP0023817A1	1981-02-11
US20030185953A1	2003-10-02
US20070222105A1	2007-09-27
GB1145814A	1969-03-19
US20050269733A1	2005-12-08

Groth & Co. KB (Stockholm, SE)

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