Process and machine for fastening a closure member to a containe

Details Process and machine for fastening a closure member to a containe Process and machine for fastening a closure member to a containe

1979-08-30

1981-10-06

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29788, 53330, 53366, 53486, 53488, 15658391, B29C 2712, B30B 1534, B65B 728

Patent

active

042933544

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 with an upstanding side wall in contact with the side wall of the closure member and functioning as an anvil, and radially-moveable punching points for punching selected portions of the upstanding tubular inner wall of the channel into the inner surface of the folded-over, reinforced portion against the portions of the side wall of the fastening head which are apposed to the selected portions. Means are described for effecting relative movement of the fastening head onto and off of the closure member and for actuating the punching points. Also, heating elements are provided to heat the punching points.

REFERENCES:
patent: 2798654 (1957-07-01), Gibbs
patent: 2975575 (1961-03-01), Nalbach et al.
patent: 3160542 (1964-12-01), Foye
patent: 3668824 (1972-06-01), Solomonov et al.
patent: 4189824 (1980-02-01), Dillon et al.

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