Method of making a double-walled tubular container

Details Method of making a double-walled tubular container Method of making a double-walled tubular container

1974-07-01

1976-01-13

Reeves, Robert B.

Metal fusion bonding

Process

Critical work component, temperature, or pressure

113120D, 228 18, 228144, B21D 5136

Patent

active

039317765

ABSTRACT:
A method of making a double-walled tubular container by winding plastic sheet material into a sleeve on a cylindrical mandrel with a pair of opposed longitudinal edges of the plastic sheet overlapping. A container top having a skirt is inserted into the plastic sleeve and simultaneously the overlapping edges of the plastic sleeve are heat-sealed and the sleeve is heat-sealed to the skirt of the container top. A thin metal sheet is cut and wound over the sleeve and skirt and is heat-sealed thereto. An ejection outlet stopper is fitted to the container top and the tube is then removed from the mandrel.

REFERENCES:
patent: 2012531 (1935-08-01), Goldine
patent: 2383230 (1945-08-01), Voke
patent: 3172571 (1965-03-01), Marchak
patent: 3740306 (1973-06-01), Kosbab et al.

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