Insulated conductors
AssigneeVictrex Manufacturing Limited
InventorsJames Bonnet, Andrew Elleray, Stuart Green, Colin Rimmer
Life of this patent
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Abstract
An insulated conductor has an elongate conductor provided with an insulating layer which comprises a polymeric material. The polymeric material has a crystallinity of at least 25% and includes a repeat unit of general formula wherein t1 and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2. The insulating layer has a thickness in the range 2 μm-300 μm.
Claims19
An insulated conductor comprising an elongate conductor provided with an insulating layer which comprises a polymeric material, wherein said polymeric material has a crystallinity of at least 25% across substantially the entire extent of said insulating layer, wherein the crystallinity of said polymeric material across the extent of said insulating layer varies by less than 10%, wherein said polymeric material includes a repeat unit of general formula
- wherein t1 and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2;
- wherein said insulating layer has a thickness in the range 2 μm-300 μm.
An intermediate product comprising an elongate conductor wrapped with MDO tape, wherein said MDO tape comprises a polymeric material, wherein said polymeric material includes a repeat unit of general formula
- wherein t1 and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2,
- wherein said polymeric material has a crystallinity of at least 25% across substantially the entire extent of said insulating layer, wherein the crystallinity of said polymeric material across the extent of said insulating layer varies by less than 10%.
Apparatus for producing an elongate conductor, the apparatus comprising:
- (i) a transportation device for transporting an elongate conductor between a first position and a second position;
- (ii) a winding unit for winding a tape comprising a polymeric material around the elongate conductor, the polymeric material having a crystallinity of at least 25%, and including a repeat unit of general formula
- wherein t1 and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2;
- wherein said insulating layer has a thickness in the range 2 μm-300 μm;
- (iii) a first induction coil for heating the elongate conductor to a first temperature during passage between said first and second positions;
- (iv) a second induction coil for heating the elongate conductor to a second temperature higher than said first temperature, said second induction coil being downstream of said first induction coil;
- and, optionally,
- (v) a cooling apparatus downstream of said second induction coil,
- wherein said polymeric material has a crystallinity of at least 25% across substantially the entire extent of said insulating layer, wherein the crystallinity of said polymeric material across the extent of said insulating layer varies by less than 10% after cooling.
Dependencies are inferred from the claim text.