Process and apparatus for the production of tighthead drums and

Details Process and apparatus for the production of tighthead drums and Process and apparatus for the production of tighthead drums and

1991-07-19

1993-04-27

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156267, 156498, 156499, 156500, 156511, 156516, 156517, 156521, 156556, 264520, 264523, 264524, 264527, 264528, 264531, 264536, 264537, 220320, 220649, B29C 4503, B29C 4516, B29C 4904, B29C 4918

Patent

active

052058859

ABSTRACT:
A process for the production of tighthead drums having dimensional stability of the injection molded lids and blow molded drum bodies, comprises blow molding double drum bodies from plastic and centrally separating them into two drum bodies. Tighthead lids are produced by injection molding from plastic. The tighthead lids are then welded to the drum bodies. Widemouth drums are also produced by blow molding double drum bodies from plastic and centrally separating them into two drum bodies, but with a molded-on edge at a distance under the drum opening. Drum lids are injected molded from plastic with an outside flange molded-on the lower lid edge. A sealant of plastic is injected into the lids and the lids are positioned on the drum bodies sealed with a clamping ring.

REFERENCES:
patent: 3196593 (1965-07-01), Hey
patent: 3432586 (1969-03-01), Stenger
patent: 3454690 (1969-07-01), Anderson et al.
patent: 3457590 (1969-07-01), Dittmann
patent: 3862698 (1975-01-01), Hafele
patent: 4201306 (1980-05-01), Dubois et al.
patent: 4412628 (1983-11-01), Whitney
patent: 4548668 (1985-10-01), Roth et al.

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