Method and apparatus for integrally forming a cutter on a carton

Details Method and apparatus for integrally forming a cutter on a carton Method and apparatus for integrally forming a cutter on a carton

1993-02-23

1994-04-26

Lavinder, Jack

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493 82, 493148, 493150, 493328, 493331, 493332, 493901, 225 91, B31B 114, B31B 174

Patent

active

053062248

ABSTRACT:
A paperboard shaped into a profile substantially the same as that of a carton blank for folding into a carbon is formed with a plurality of first slits on an edge of the paperboard at a predetermined angle relative to the edge and with a plurality of second slits on the same edge at a predetermined angle relative to the first slits in such a manner that saw-teeth are integrally formed thereon. The saw teeth are immersed in a bath of a quick drying adhesive including .alpha.-cyanoacrylate to be impregnated with the adhesive and then dried, thereby forming teeth constituting a cutter on the carton blank. The carton obtained by folding the carton blank can be used as a packaging container for accommodating a roll of wrapping wed. An apparatus for carrying out the method comprises first cutting means for forming the first slits, second cutting means for forming the second slits so as to integrally form saw-teeth on the edge portion, a bath of adhesive for impregnating the teeth with the adhesive, drying means for drying the teeth, and transfer means for transferring the paperboard along a predetermined path via the first and second cutting means, the bath and the drying means.

REFERENCES:
patent: 1887912 (1932-11-01), Begle
patent: 3281036 (1966-10-01), Woodling
patent: 3479203 (1969-11-01), Broadhurst
patent: 4234635 (1980-11-01), Atkinson
patent: 4272590 (1981-06-01), Blank
patent: 4371104 (1983-02-01), Korte
patent: 4386193 (1983-05-01), Reich
patent: 4856502 (1989-08-01), Ersfeld et al.
patent: 5135784 (1992-08-01), Okumura

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