Mica Taping Service

Conductor taping for fire resistant cables

80 km/día Daily capacity

1200°C Fire resistance

Fire protection directly on the conductor

Mica taping applies a fire protection barrier directly onto the copper conductor before insulation extrusion. This mica layer allows the cable to maintain circuit integrity during a fire, ensuring operation of critical systems such as alarms, emergency lighting, ventilation and elevators for the time required by applicable standards.

Máquina de encintado de mica vertical con pad girando sobre conductor de cobre

Mica taping Mica tape pad being applied on copper conductor

Production Capacity

5 Taping lines

2x Vertical double column

80 km/day* *Total combined capacity of 5 lines

Available Mica Types

Property	FR80M28
Thickness	0,110 ± 0,02 mm
Tape weight	128 ± 15 g/m²
Mica content	80 ± 5 g/m²
Glass content	28 ± 2 g/m²
Dielectric strength	≥ 1,3 kV/layer
Tensile strength	≥ 100 N/10mm
Fire resistance	750 - 950 °C

When to choose: Calcined muscovite mica offers good cost-performance ratio for applications where test temperature does not exceed 950°C.

Property	FR90P28	FR120P28	FR160P28
Thickness	0,100 ± 0,02 mm	0,120 ± 0,02 mm	0,150 ± 0,02 mm
Tape weight	135 ± 10 g/m²	171 ± 11 g/m²	206 ± 11 g/m²
Mica content	90 ± 5 g/m²	125 ± 5 g/m²	160 ± 5 g/m²
Glass content	28 ± 2 g/m²	28 ± 2 g/m²	28 ± 2 g/m²
Dielectric strength	≥ 1,0 kV/layer	≥ 1,2 kV/layer	≥ 1,5 kV/layer
Tensile strength	≥ 100 N/10mm	≥ 100 N/10mm	≥ 100 N/10mm
Fire resistance	up to 1000 °C	up to 1000 °C	up to 1000 °C

When to choose: Phlogopite mica withstands higher temperatures (up to 1000°C) and offers greater flexibility. Indicated when standards require tests at higher temperatures or longer exposure times.

Tape Grades

Standard

General taping

High quality

High-speed taping, small conductor cross-sections

High quality grade ensures smooth taping process at high speeds, especially valued for small conductor cross-sections where tension and overlap control is more demanding.

Taping Process

Vertical configuration

Vertical double-column configuration: allows taping two conductors simultaneously per line, doubling effective capacity.

Tape orientation

Mica is applied with the mica paper side in direct contact with copper. This orientation ensures the protection barrier is closest to the conductor.

Layers

Single or double layer according to test standard requirements and conductor cross-section.

Tape Composition

Component	Function
Mica paper	Main thermal barrier (750-1000°C)
Alkali-free glass fabric	Mechanical reinforcement, tensile strength
Silicone resin	Impregnation, flexibility, interlayer adhesion

Common properties:

Free of halogens and toxic gases
Excellent electrical insulation properties at high temperature
Flexibility and tensile strength for high-speed taping

Reference Standards

Mica taping enables cables to comply with circuit integrity standards in case of fire. The most common standards are IEC 60331 (circuit integrity), EN 50200 (fire resistance with mechanical shock) and BS 6387 (fire, water and mechanical shock resistance). Selection of mica type, thickness and number of layers depends on the specific standard the cable must meet.

IEC 60331 EN 50200 BS 6387

Technical Assistance

We offer technical assistance on new or existing projects for mica type selection, taping configuration and validation according to required standards.

Need mica taping for your conductors?

Tell us conductor cross-section, required fire resistance standard (IEC 60331, EN 50200, BS 6387 or other), batch length and delivery time. We advise on mica type selection and taping configuration.