Method of welding tubular components of thermoplastic material

Details Method of welding tubular components of thermoplastic material Method of welding tubular components of thermoplastic material

1988-08-29

1990-05-08

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Utilizing special inert gaseous atmosphere or flushing mold...

156156, 1563042, 1563046, 264 25, 264248, 264521, 264573, 264DIG45, 4251744, 425503, 425508, 425DIG13, B29C 6502, B29D 2322

Patent

active

049236598

ABSTRACT:
A gaseous medium, preferably compressed air or nitrogen, is introduced into the interior of the tubular components to be welded together from one end and is discharged at the other end through a throttled outlet opening. As a result, an excess pressure is built up in the interior of the tubular components and the inner wall of the components is cooled. When heating the abutting ends of the tubular components by means of a heating device, the ends are not melted entirely through to the inner walls, so that the formation of an inner welding bead is avoided and the internal pressure creates a welding pressure.

REFERENCES:
patent: 2963394 (1960-12-01), Wilkinson
patent: 3536567 (1970-10-01), Harrison
patent: 4288266 (1981-09-01), Konrad et al.

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