The insulation board is made of glue-type insulating material, and there should be no harmful irregularities on the upper and lower surfaces of the insulating pad. Detrimental irregularities of insulating mats are defects that destroy the uniformity and damage the smooth contour of the surface, such as small holes, cracks, local bulges, cuts, inclusions of conductive foreign objects, creases, voids, concave and convex ripples, and casting marks. Harmless irregularities are surface irregularities formed during the production process.

Insulation board process and molding:

There shall be no harmful irregularities on the upper and lower surfaces of the insulating panels. Detrimental irregularity refers to one of the following characteristics, namely defects that destroy the uniformity, damage the smooth contour of the surface, such as small holes, cracks, local bumps, cuts, inclusions of conductive foreign bodies, creases, voids, concave and convex ripples and casting marks, etc. . Harmless irregularities are surface irregularities formed during the production process.

Insulation board characteristics and uses：

It has the characteristics of high mechanical strength, flame retardancy, good leakage resistance; high arc resistance, dielectric strength and withstand voltage; low water absorption, stable size, and small warpage. This product is mainly used in various insulating partitions of high, medium and low voltage switchgear.