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Mica Tapes for Cable
Mica Tape Calcined Muscovite
Calcined Muscovite Mica Tape consist of high quality muscovite mica paper bonded to reinforced materials of electrical glass cloth or Polyethylene film as the supporting fabric, impregnated with a selected high temperature resistant silicone resin.

Process of calcination is to heat the selected natural muscovite raw mineral materials with high temperature to improve the stability of chemical composition by removing the water crystallization and impurities which affect negatively the dielectric strength and temperature resistance. Such processing renders calcined muscovite mica tape the following characteristics:
· Extreme temperature resistance
· Superior flexibility suitable for high speed taping on small diameter conductor
· Excellent electrical insulation properties
· Asbestos and halogen free, non-toxic

Calcined Muscovite Mica Tape are generally applied directly cover conductors, with mica facing the copper to act the ultimate electrical insulation in event of unexpected fire.
Calcined Muscovite Mica Tape is solution for all essential and emergency systems when circuit integrity must be maintained during and after a fire. It is recommended solution for cable including:
· Submarine cables
· Marine cables
· Power cables
· Control cables
· Instrumentation cables
· Signaling cables

Technical Data


Calcined muscovite mica tape with single side glass fabric

Type Unit 80CM32G 100CM32G 120CM32G
Thickness mm 0.10±0.015 0.12±0.015 0.14±0.015
Density g/m2 135±12 163±12 180±12
Mica Content g/m2 80±5 105±5 120±5
Glass Content g/m2 32±3 32±3 32±3
Bond content g/m2 23±4 26±4 28±4
Tensile strength N/cm >100 >120 >120
Dielectric strength Kv/layer >1.2 >1.5 >1.8

Standard Supply:
Standard width:   minimum 4mm
Standard length:  330M/pad,500M/pad,1000M/pad
As per required length & dimension for traverse wound spool
Standard core:    76mm ( 120mm optional)
Availability:       pads and traverse wound spools with customer’s required dimension

Moisture-proof PE film + cartons+ fumigation free cases
Acceptable customized packing according to customer’s requirements

Proper storage with temperature ≤40℃ and humidity ≥60% with original package.

GR Cable Materials (Jiangxi) Co,.ltd

Add: Yifeng Industrial Park, Yifeng, Yichun, Jiangxi, 336300, China.


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Contact us
Mr. Wong
Mobile:+86 133 39885505
Fax:+86 795 2902233