Method of heat sealing a thermoplastic drum and lid and article

Details Method of heat sealing a thermoplastic drum and lid and article Method of heat sealing a thermoplastic drum and lid and article

1985-11-05

1988-05-10

Czaja, Donald E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562739, 1562742, 1563066, 264 27, 264248, B65B 728

Patent

active

047433205

ABSTRACT:
A method of heat sealing a thermoplastic lid to a thermoplastic drum and an article of manufacture comprising a sealed container especially for hazardous and nuclear wastes are disclosed. A pair of flat ribbon resistance wires are encapsulated within a thermoplastic sheath and are arranged in spaced, parallel, substantially coplanar relation. For welding together the drum and lid, one or more pairs of encapsulated wires are attached to the lid and are compressed between confronting surfaces of the lid and drum by mean of a drum clamp. A predetermined electric current is passed through the wires to heat the wires and melt the thermoplastic sheath. As the thermoplastic sheath melts, the pressure exerted by the drum clamp squeezes the molten thermoplastic material radially inwardly and outwardly along the confronting surfaces of the lid and drum. The heated wires are urged into contact with the thermoplastic material of the drum and lid which is melted and intermingled to thereby weld the lid and drum together and form a sealed container.

REFERENCES:
patent: 2744655 (1956-05-01), Vnuk
patent: 3133846 (1964-05-01), Gandy
patent: 3506519 (1970-04-01), Blumenkranz
patent: 3561982 (1971-02-01), Oeth
patent: 4201306 (1980-05-01), Dubois
patent: 4586624 (1986-05-01), Shaw

Affiliated with

Also associated with

Rating

Method of heat sealing a thermoplastic drum and lid and article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of heat sealing a thermoplastic drum and lid and article , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of heat sealing a thermoplastic drum and lid and article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1318899