Method and apparatus for sealing plastic tubes

Details Method and apparatus for sealing plastic tubes Method and apparatus for sealing plastic tubes

1988-03-10

1990-06-12

McCamish, Marion C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563084, 1563099, 156322, 156443, 156499, B32B 3102, B32B 3120, B32B 3126

Patent

active

049330411

ABSTRACT:
Method and apparatus for sealing the end of a thermoplastic tube wherein a tapered mandrel is heated to a temperature above the melting point of the tube and is inserted into the tube to force direct contact of the tube with the mandrel. After the contacted surface has fused, the mandrel is raised and a heated jet of air expands the tube, allowing the mandrel to be withdrawn. Jaws clamp the mandrel surfaces together to form the seal.

REFERENCES:
patent: 2715087 (1955-08-01), Barradas
patent: 3475786 (1969-11-01), Pearson
patent: 3555652 (1971-01-01), Ignell
patent: 3765144 (1973-10-01), Schlesser
patent: 4088526 (1978-05-01), Amberg
patent: 4351692 (1982-09-01), Ouellette
patent: 4511426 (1985-04-01), Linner
patent: 4695337 (1987-09-01), Christine

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