Adhesive bonding and miscellaneous chemical manufacture – Methods – Making electrical conductors of indefinite length
Patent
1978-09-05
1980-05-27
Van Balen, William J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Making electrical conductors of indefinite length
156502, 249 95, 264 85, 264272, 425108, 425802, B21F 1502, B29C 602
Patent
active
042048966
ABSTRACT:
The invention relates to a method and apparatus for producing an insulated joint between electrical conductors, particularly between cables insulated by cross-linked polyethylene material. Heat is applied to joined parts of the conductors which have been covered by a cross-linked polyethylene material in uncured condition and closely confined within an enclosure which is heated until the said material is cured, pressure being applied to the joint while the joint is cooling, whereby voids in the cured joint are substantially suppressed. More specifically, parts of cable cores are connected together, the joint and adjacent portions of the cables are covered with the uncured material, the covered joint is heated within a mould until the material is cured, and pressure is applied to the joint while it is cooling. Advantageously, the uncured material is in the form of a tape.
The mould cavity for the joint may be defined by two mould parts and the pressure applied by moving one of them in relation to the other. Alternatively the pressure may be applied by pistons slidable in cylinders communicating with the cavity. In either case the pressure may be applied through spring means.
REFERENCES:
patent: 3467561 (1969-09-01), Waride
patent: 3970488 (1976-07-01), Nelson
patent: 4084307 (1978-04-01), Schultz
patent: 4091062 (1978-05-01), Nelson
Hayward Tyler Limited
Van Balen William J.
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