In respect of the whole core flame retardant conveyor belt, its whole core is processed by dipping in PVC paste, plasticization or vulcanization, thus, the conveyor belt has high tensile strength, high freight volume, transportation balance and such desired properties as flame retardant, anti-static electricity, impact resistance, wear resistance and corrosion resistance.

The product is mainly suitable for underground transportation in coal mine and for material transportation in metallurgy and chemical industry. The whole core flame retardant conveyor belt is classified into PVC type and PVG type. Upper coating and lower coating for PVC type are PVC cover rubber and the single-sided rubber is equal to or more than 1.0mm. Upper coating and lower coating for PVG type combine nitrile rubber and PVC and the single-sided thickness is 1.5mm-4.5mm. The conveying dip of PVC conveyor belt is less than 16＇, the conveying dip of PVG conveyor belt is less than 20＇and both of them can be used for surface transportation and underground transportation in the coal mine.
Type and technical parameter of PVC conveyer belt:

Standard MT914-2008						Safety factor 10(Breaking strength*1/10)
The Slope <16℃
Standard type	Degree	Breaking strength ≥,N/mm		Tensile yield≥,%		Advising Min diameter of Transmission Drum
		Longitudinal	Transverse	Longitudinal	Transverse
680S	4th	680	265	15	18	320
800S	5th	800	280			400
1000S	6th	1000	300			500
1250S	7th	1250	350			500
1400S	8th	1400	350			630
1600S	9th	1600	400			750