mica tape length per roll is 500m~1000m in general. When one roll of
mica tape is used up, replacing new mica roll takes much time. In order
to save time, the tray is developed thereby. The longest length of tape
in one tray can be up to 50000m(The tray diameter is 400mm and height is
According to the different reinforcing material, the products can be divided into:
R-5461-P-GS/FIRO-PGS Glass Backed Phlogopite Mica Tape
R-5461-P-FS/FIRO-PFS PE Backed Phlogopite Mica Tape
R-5461-P-GFD/FIRO-PGFD Phlogopite Mica Tape with Glass and Film
R-5461-S-GS/FIRO-SGS Synthetic mica tape with glass
Note: Meaning of product code
R-5461:Rongtai product serial number; P: Phlogopite; GS: Glass on single side ;FS: Film on single side
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.
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.
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.