Methods of manufacturing slider-operated string-zippered bags of VFFS machine

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(11)

EP 1 621 462 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.04.2006 Bulletin 2006/15

(43)	Date of publication A2:
	01.02.2006 Bulletin 2006/05

(21)	Application number: 05254491.3

(22)	Date of filing: 19.07.2005

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International Patent Classification (IPC):

B65B 9/20^(2006.01)
B31B 19/90^(2006.01)

B65B 61/18^(2006.01)
B65D 33/25^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

30.07.2004 US 903453

(71)	Applicant: Illinois Tool Works, Inc.
	Glenview, Cook County, Illinois 60025 (US)

(72)	Inventors:
	Schneider, John H. Frankfort Illinois 60423 (US) Linton, Basil C. Loganville Georgia 30052 (US) Ausnit, Steven New York New York 10021 (US) Fenzl, Eric J. Loganville Georgia 30052 (US) Crunkleton, Gregory H. Nicolson Georgia 30565 (US)

(74)	Representative: Finnie, Peter John
	Gill Jennings & Every LLP Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)

(54)	Methods of manufacturing slider-operated string-zippered bags of VFFS machine

(57) A method of manufacture comprising the following steps: (a) guiding a web material in a machine direction through a vertical form-fill-seal (VFFS) machine with a portion or portions of the web material being wrapped around a tube; (b) joining first and second flangeless zipper strips to first and second portions of the web material that do not form part of the portion or portions of the web material that are wrapped around the tube; (c) inserting a slider on the first and second flangeless zipper strips joined to the web material; (d) cross sealing the web material at a location downstream from the tube; and (e) dropping product through the tube and onto the most recently formed cross seal.

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