B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 27/00 (2006.01) B31B 19/00 (2006.01) B31B 23/00 (2006.01) B65D 30/18 (2006.01) B65D 30/20 (2006.01)
Patent
CA 2061436
Abstract: The invention relates to a method for the continuous manufacture of envelopes, bags, shipping pouches, or the like, of web type material, especially paper or the like, with or without side folds, including lateral gumming or central gumming and with a respective folded and glued bed bottom, whereby the web type material is first precreased, cut, provided with adhesive or gummed, folded, severed, prefabricated into a tubular blank, and finally closed at its bottom. The gist of the invention comprises: a) that the steps for forming the bottom take place during a continuous feed advance, and b) that the material serving for the formation of the lower bottom flap (42) is displaced backwardly opposite to the transport direction in a zig-zag fold during the bottom formation, c) whereby bottom side tongues (10, 11) lay themselves laterally outwardly in the case of an envelope, a bag, or a shipping pouch, with side folds (63, 64), and d) whereby said bottom side tongues lay themselves over inwardly in case of an envelope, a bag, or a shipping pouch without side folds.
Macrae & Co.
Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Kg
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