Method of producing a bent resin tube

Details Method of producing a bent resin tube Method of producing a bent resin tube

1993-09-30

1995-06-06

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 25, 264 26, 264173, 264211, 264295, 264296, 264322, 264339, 264DIG65, B06B 300, B29C 3514, B29C 5308

Patent

active

054220483

ABSTRACT:
A method of producing a bent resin tube by heating a certain portion of a straight resin tube to be bent partially by a partial bending means, and bending the heated certain portion partially by a partial bending die, thereby rendering a desired bend shape to the tube. In this method, a large die for constraining the shape of the whose tube or a large oven is not required. Therefore, space for equipment can be reduced, and production efficiency is enhanced because the time required for bending operations is decreased remarkably. The heating may be done by high frequency induction heating, high frequency dielectric heating, or other conventional heating.

REFERENCES:
patent: 4255378 (1981-03-01), Miller et al.
patent: 5200124 (1993-04-01), Bowkett

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