Method and apparatus for closing tubes

Details Method and apparatus for closing tubes Method and apparatus for closing tubes

1978-12-01

1980-08-26

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

264322, B29C 2702

Patent

active

042195250

ABSTRACT:
A bottom in a tube having an open end is formed by heating the tube and a supporting mandrel and advancing a sleeve over the end of the tube which flares outwardly after heating so as to collapse the flared end. The collapsed end of the tube is closed by contacting the collapsed end with a mold which cooperates with the sleeve to form the bottom.

REFERENCES:
patent: 2285980 (1942-06-01), Jeckel
patent: 2876496 (1959-03-01), Murphy
patent: 2900665 (1959-08-01), Walker
patent: 3300559 (1967-01-01), Baehr
patent: 3509252 (1970-04-01), Baehr
patent: 3929943 (1975-12-01), Klimaszewski

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