FIRO-CM is a dry and flexible
insulating tape made of calcinated mica paper Muscovite ,a glass cloth
and modified silicone resin .
According to the different reinforcing material, the products can be divided into following ones:
R-5461- CM-GS/FIRO-CMGS Glass Backed Calcined Muscovite Mica Tape
Note: Meaning of product code
R-5461: Rongtai product serial number; CM: calcined muscovite;
FIRO-CM is used for the insulation
of flame resistant security cables according to requirements IEC 331 or
BS 6387 .Pyronax is wound up around the bare or insulated wire and it
provides a protection barrier .The insulation must withstand at
temperature up to 1000℃ .Pyronax is not burning ,non toxic and it is
resistant for corrosion ,humidity and acids .
Length: 300m 500m 1000m 2000m .Traverse wound spools optional
Standard cores: 52mm 54mm 76mm 120mm
In dry environment at room temperature, the storage period is 3 year.
One pack is usually at 50kg, sealed
with plastic film and packed in carton. The fumigation-free pallet
shall be used when exporting. Each pallet contains <1000KG, or
protected by metal drum.
The technicians should select
appropriate width mica tape based on the wire sizes, winding tension,
angles and wrapping speed, in case of broken tape or missed space, to
ensure the surface of the insulated conductors after wrapping is smooth
and flat, no mica falling off.
When winding small cross section
wires, due to small coiling radius, the mica falls off easily. The width
of the mica tape is small and the tensile strength is small, so the
coiling tension and speed shall be uniform, in case tape broken and mica
powder fallen off.
Mica tape wrapping layers and lapping rate are
different when the material properties, specifications and models of the
cables are different, and shall be determined by the cable designer
based on the result of fire resistance test. According to IEC standard
about fire-resistant cable testing, we recommend wrapping layers are 2
and the lapping rate is not less than 50%, i.e. the wire is wrapped by 4
layers of mica tapes.
Glass Backed Calcined Muscovite Mica Tape
No alien material ,no split ,scar&hole,no broken folded
Weight of Tape