Cable manufacturing process

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...

Reexamination Certificate

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Details

C264S171130, C264S171140, C264S173110, C264S173120, C425S133100

Reexamination Certificate

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07811494

ABSTRACT:
A process for manufacturing a cable which includes a conductor; an inner semiconductive layer surrounding the conductor and having a thickness lower than or equal to 0.4 mm; and an insulating layer surrounding the inner semiconductive layer. The process includes the step of co-extruding the inner semiconductive layer and the insulating layer and includes: a) providing a first annular flow of inner semiconductive material and a second annular flow of insulating material; b) contacting the outer surface of the first annular flow and the inner surface of the second annular flow at an axial distance from the contacting point where the inner surface of the first annular flow contacts the conductor; c) selecting in combination the predetermined feeding speed and the contacting point as a function of the dynamic viscosity of the inner semiconductive material and of the insulating material, so that a ratio between the shear stress of the inner semiconductive layer at the radially inner wall of the extrusion die and the shear stress of the insulating layer at the radially outer wall of the extrusion die, in proximity of the contacting point, is about 0.5 to 4; and d) compression extruding the insulating layer and the inner semiconductive layer onto the conductor.

REFERENCES:
patent: 3404432 (1968-10-01), White et al.
patent: 3737490 (1973-06-01), Nicholson
patent: 4093414 (1978-06-01), Swiatovy, Jr.
patent: 4378102 (1983-03-01), Portis et al.
patent: 5153381 (1992-10-01), Ganatra et al.
patent: 5431867 (1995-07-01), Matsushita et al.
patent: 5518618 (1996-05-01), Mulder et al.
patent: 5681514 (1997-10-01), Woody
patent: 6534715 (2003-03-01), Maunder et al.
patent: 7367373 (2008-05-01), Spruell
patent: 2002/0153635 (2002-10-01), Belli et al.
patent: 0 534 208 (1996-06-01), None
patent: 0 981 821 (2002-07-01), None
patent: WO-01/46965 (2001-06-01), None
patent: WO-2004/003940 (2004-01-01), None

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