Process for continuously coating a metal wire at high velocity

Details Process for continuously coating a metal wire at high velocity Process for continuously coating a metal wire at high velocity

1975-08-15

1978-01-24

Smith, Ronald W.

Coating processes

Electrical product produced

Wire conductor

118309, 118405, 427195, 427345, 427375, B05D 512, B05D 302, B05D 310

Patent

active

040705030

ABSTRACT:
A metal wire to be coated with thermoplastic material is advanced at high speed, e.g. of 100 meters per minute, through a codirectionally moving mass of thermoplastic particles after having been heated to a temperature high enough to cause adhesion of these particles to the wire. The mass is mechanically entrained in a treatment chamber by an endless belt or the like at a speed close enough to that of the wire to hold the velocity difference therebetween below a threshold value, such as 30 meters per minute, above which an abrasive effect sets in which tends to detach already adhering particles from the wire. Upon exiting from the treatment chamber, the wire is reheated to fuse these particles into a continuous envelope and is then subjected to an electrostatic flocking operation for studding the envelope with radially projecting cellulosic fibers forming a velvety coating thereon.

REFERENCES:
patent: 3364053 (1968-01-01), Beike
patent: 3389010 (1968-06-01), Burch
patent: 3450571 (1969-06-01), Zenczak
patent: 3476081 (1969-11-01), Facer et al.
patent: 3479200 (1969-11-01), Estabrooks
patent: 3503778 (1970-03-01), Corbett et al.
patent: 3565662 (1971-02-01), Ward et al.
patent: 3901180 (1975-08-01), Allen et al.
patent: 3962990 (1976-06-01), Phipps et al.

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