Manufacture of conductive or semi-conductive elements by means o

Details Manufacture of conductive or semi-conductive elements by means o Manufacture of conductive or semi-conductive elements by means o

1979-04-05

1980-06-10

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156243, 156324, 219213, 219345, B29D 908

Patent

active

042071291

ABSTRACT:
Conductive or semi-conductive elements which may be utilized as heating elements are manufactured in a continuous process utilizing a method known as pultrusion. The elements are prepared by forming semi-cured sheets comprising a support containing a mixture of a conductive or semi-conductive powder and a resin. The semi-cured sheets are fitted with conductive buss bars to form a conductive or semi-conductive element which is thereafter encapsulated in a glass roving-resin mixture to form the desired element. This element is then pulled through a heated die to effect the desired physical shape and thereafter may be cut to the desired size.

REFERENCES:
patent: 2889439 (1959-06-01), Musgrave
patent: 3031739 (1962-05-01), Boggs
patent: 3380867 (1968-04-01), Morey
patent: 3973103 (1976-08-01), Tadewald
patent: 4032751 (1977-06-01), Youtsey et al.

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