Mica-wrapped wires for fire-resistant cables have an unusually low degree of overlap in the mica tape wraps, which unexpectably produces a smoother external profile while retaining an acceptable degree of fire protection. Two layers of glass-cloth-backed mica tape, preferably with a polymer film overlying the cloth, are preferably applied with their respective (low) overlaps staggered. This smoother wrapping is especially effective when thin (less than 0.8 mm) polymer coatings are to be extruded over the wrapped wire.
申请公布号
WO9602920(A1)
申请公布日期
1996.02.01
申请号
WO1995GB01638
申请日期
1995.07.12
申请人
RAYCHEM LIMITED;MAXFIELD, JAMES, DAVID;COOPER, BRIAN;WILLIAMS, EDWARD
发明人
MAXFIELD, JAMES, DAVID;COOPER, BRIAN;WILLIAMS, EDWARD