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Glassfiber Filter Bags 
Glassfiber filter cloth is one of the strongest textile fibers, having greater specific tensile strength than
steel wire of the same diameter, at a lower weight.
Dimensional Stability: 
Glassfiber Filter cloth has low elongation under load, generally 3% or less. Glass fibers produce fabrics
with excellent dimensional stability under various types of conditions. 
High Heat Resistance: 
Glassfiber filter cloth has excellent heat resistance at relatively low cost. Glassfiber cloth retains approximately
50% of room temperature tensile strength at 700°F (371°C); approximately 25% at 900°F (482°C); with a
softening point of 1555°F (846°C) and a melting point of 2075° F (1121 °C). 
Fire Resistance: 
Glassfiber Filter cloth is composed of inorganic materials, and are noncombustible, a natural choice where
flammability is of concern. 
Good Thermal Conductivity: 
The rapid heat dissipation of Glassfiber cloth is particularly important in electrical insulation applications. 
Good Chemical Resistance: 
Like glass itself, Glassfiber cloth is highly resistant to attack by most chemicals. 
Outstanding Electrical Properties: 
Glassfiber fabric withstands high temperature and has low moisture regain. Along with its high dielectric
strength and low dielectric constant, glass is of major importance and usefulness in the electronics. 
Durability: 
Being inert, Glassfiber cloth is unaffected by sunlight, fungus or bacteria. 
Economical: 
Glassfiber Filter cloth is lower in cost than many other fabrics for similar applications.

Style		KW450	KW550	KW650	KW750	KW800
Weave		1/3 twill	1/3 twill	Weft double	Weft double	Weft double
Density yarn		19×10	18×13	20×20	20×17	20×18
Weight(g/m2)		≥450	≥450	≥600	≥750	≥800
Tensile breaking Strength(N/25mm)	warp	≥1750	≥2200	≥2400	≥2400	≥2400
	weft	≥1000	≥1100	≥1700	≥2100	≥2100
Temperature()		280	280	280	280	280
Filter velocity(m/min)		0.5	0.5	0.6	0.7	0.7
Air permeability (cm3/cm2·s)		30-55	15-35	15-35	15-35	15-35