Patent
1975-04-04
1977-03-08
Gilden, Leon
93 84R, B31B 144
Patent
active
040106764
ABSTRACT:
An apparatus for forming articles such as paperboard cartons from a single piece blank, comprising a first article holding member containing a cut-out and a second article holding member adapted to mate with the cut out. A portion of the workpiece is grasped by the mating surfaces of the holding members. Article forming members are provided in which the ungrasped portions of the workpiece are cradled. The forming members are capable of mating in close fitting relationship about the holding members. As the forming members move towards the holding members, they move the ungrasped cradled portions of the workpiece against the lateral surfaces of the mated holding members, sandwiching them between the mated holding members and mated forming members. The mated holding members serve as a forming mandrel to impart the desired shape to the workpiece. By properly sizing the forming members, corner seals on items such as paperboard cartons can be formed as the forming members mate around the holding members. It has been found desirable to recess certain lateral surfaces of the first holding member relative to those of the second holding member, and to taper selected surfaces of the holding and forming members, as explained in greater detail herein.
REFERENCES:
patent: 432028 (1890-07-01), Foglesong
patent: 440570 (1890-11-01), Hott
patent: 502320 (1893-08-01), Rice
patent: 1548231 (1925-08-01), Walker
Eilenberg Jon Arthur
Naugle George Henry
Gilden Leon
International Paper Company
Schapira Ronald A.
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