System for gluing bags comprising multiple sheets

Details System for gluing bags comprising multiple sheets System for gluing bags comprising multiple sheets

2004-10-19

2009-10-27

Tucker, Philip C (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With work feeding or handling means

C156S582000, C118S255000

Reexamination Certificate

active

07607469

ABSTRACT:
The invention relates to an improved system for gluing the bottoms of bags. The inventive system comprises a block which is used to glue the bottom-forming flaps and which is equipped with a relief. The relief is formed by a series of parallel rows which are disposed longitudinally in the direction of rotation of the gluing roller and which determine the same number of ridges as rows, having corresponding grooves therebetween. In this way, only the ridges are impregnated when adhesive is spread on the block, such that parallel lines of glue are applied to the flaps. In addition, the same block is used to glue a reinforcing strip to the bottom of the bag that has been formed by folding and gluing the above-mentioned flaps, such that the glue is applied in parallel lines. The glue-applicator points, which are used to apply dots of glue between the bag-forming sheets, are equipped with an improved application face which prevents the build-up of glue on the walls of the glue-applicator point.

REFERENCES:
patent: 3269643 (1966-08-01), McDowell
patent: WO 03086744 (2003-10-01), None

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