Package making – Methods – Closing package or filled receptacle
Patent
1979-11-09
1981-11-24
Culver, Horace M.
Package making
Methods
Closing package or filled receptacle
53486, 53488, 53330, 156 69, B67B 104, B65B 728
Patent
active
043016405
ABSTRACT:
A machine and process useful for fastening a closure member to a container with an upstanding tubular wall, an end edge of which is folded over onto itself to form a folded-over, reinforced portion of double thickness at that end, the closure member having an upstanding tubular inner wall conforming to the inner surface of the folded-over, reinforced portion and a downstanding tubular outer wall connected thereto and conforming to the outer surface of the folded-over, reinforced portion, thereby forming a tubular channel in which the folded over, reinforced portion is seated in frictional engagement, which comprises a dish-shaped fastening head adapted to be positioned around the closed end of the container between the jaws of a pincer, one end of which comprises a punching point and the other of which comprises an anvil, and a wedge or a wedging toggle arranged to wedge a plurality of said punching points into selected portions of the upstanding tubular inner wall of the channel into the inner surface of the folded-over, reinforced portion against the anvils on the opposed jaws. The wedge or toggle is designed to give a mechanical advantage of at least two and to engender a pressure on the selected portions pinched-in by the jaws sufficient to cause hot melt adhesive to flow in or through cut areas in the folded-over portion and to seal the cover thereto without application of extraneous heat.
REFERENCES:
patent: 2752744 (1956-07-01), Pechy
patent: 3679509 (1972-07-01), Fielibert
patent: 3961463 (1976-06-01), Dimond
patent: 4040237 (1977-08-01), O'Brien
Brown Company
Culver Horace M.
Hueschen Gordon W.
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