Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Extrusion shaping means
Patent
1983-09-01
1985-06-04
Thurlow, Jeffery
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Extrusion shaping means
118405, 264174, 4251311, 427117, B29F 310, B05D 512
Patent
active
045211736
ABSTRACT:
A novel apparatus for manufacturing magnet wire in a continuous process by which coatings of a flowable resin material may be applied concentrically to a moving elongated filament in thickness of about 16 mils or less. The filament can be a bare copper or aluminum conductor having round or rectangular configuration or an insulated conductor upon which a top or an intermediate coat of material is desirably applied. Coatings of one-half mil and one mil also can be applied by the method of the invention. By the apparatus of the invention, magnet wire can be manufactured by continuously drawing the wire to size, annealing the wire, if necessary, insulating the wire with one or more coats of flowable resin material, curing the resin material, if necessary, hardening the resin material, and spooling the wire for shipment, without interruption at speeds limited only by the filament pay-off and take-up devices used. The apparatus of the invention utilizes the flowable resin material to center the filament in a die, the size of the die controls the thickness of the coat to be applied. In the apparatus of the invention, only the resin material being applied to the filament is in contact with the filament. Thus, the mechanical wear normally associated with centering dies used in extrusion processes and like devices is completely eliminated.
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Bodette James E.
Bultemeier Keith D.
Coon Jessie H.
Disque Donny R.
Grimes Jerry L.
Lundy David A.
Phelps Dodge Magnet Wire Co.
Thurlow Jeffery
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