Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1995-01-19
1996-09-17
Stemmer, Daniel J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1563045, 1563046, B29C 6518, B65B 700
Patent
active
055564941
ABSTRACT:
For producing the bunghole barrel (1) utilized as a multiple-trip barrel, a continuously extending heating tool is placed under pressure on the border (18) of the barrel body (2) from above, and a bunghole lid (6) with an annular extension (23) molded onto the underside of the lid flange (17) and coaxial to the lid axis is placed under pressure on the heating tool. After a heating-up period for superficially melting the annular extension (23) on the lid flange (17) and a continuous annular bead (26) molded to the barrel border (18), the lid (6) and the heating tool are lifted off. Subsequently, the lid (6) is placed with the annular extension (23) under pressure and pretensioning of the lid gasket (16) on the barrel border (18) in such a way that the annular extension (23) on the lid flange (17) is welded to the annular bead (26) on the barrel border (18) to form an annular sealing web (20) joining the lid flange (17) and the barrel border (18). After one-time or multiple usage, for reconditioning the bunghole (1), the bunghole lid (6) is separated from the widemouthed barrel body (2) by removal of the sealing web (20). The barrel body (2) can then be retrofitted to a widemouthed barrel with a simple lid and a clamping-ring closure of sheet metal, or as a lidded bunghole barrel or bunghole barrel can be provided with a welded-on or molded-on bunghole lid.
REFERENCES:
patent: 4201306 (1980-05-01), Dubois
patent: 4222974 (1980-09-01), Smith
patent: 4232622 (1980-11-01), Weierman
patent: 4726866 (1988-02-01), Van Keimpema
patent: 4919987 (1990-04-01), Manner
patent: 4962862 (1990-10-01), Farrington
patent: 5074428 (1991-12-01), Wildfeuer
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