Apparatus and method for folding blanks with an unusually elonga

Details Apparatus and method for folding blanks with an unusually elonga Apparatus and method for folding blanks with an unusually elonga

1980-01-07

1981-07-21

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493419, 493438, 493177, B31B 136, B31B 196

Patent

active

042796113

ABSTRACT:
A box blank of the type having two side walls and a front wall of normal length but a combined bottom and rear wall of unusual length is folded and glued on a box folding and gluing machine by advancing the blanks along a horizontal path, long wall first, and overlapped in shingled formation. The first long wall in the formation encounters an air blast, or hooked finger, which unfolds the leading edge to encounter a ramp-like guide which bends it back to fold on its fold line, while also back folding the next successive long wall. All successive blanks are so back folded in "domino" fashion.

REFERENCES:
patent: 2983201 (1961-05-01), Winkler et al.
patent: 3079144 (1963-02-01), Frei
patent: 3110232 (1963-11-01), Frei
patent: 3377927 (1968-04-01), Propper
patent: 3773319 (1973-11-01), Hottendorf et al.
patent: 3907272 (1975-09-01), Joa

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