TPU coated conveyor belts (thermoplastic polyurethane)

TPU coated conveyor belts
TPU coated conveyor belts

The thermoplastic polyurethane (TPU) represent an excellent solution for the protection of conveyor belts surface against the high abrasion loss. The application in the mining industry all over the world have proven TPU superior properties over other materials. Compared with the standard rubber materials TPU wear protection linings ensure up to 20 times longer life time, then rubber linings.

The TPU coated conveyor belts will receive the best characteristics of TPU : excellent abrasion resistance, flexibility over a wide temperature range, high elasticity over the total hardness range, good resistance to oils, greases and many solvents, good resistance to weathering, freedom from plasticizers, good resistance to high energy radiation, good resistance to microbial attack. Desmopan is the trade name for TPU produced by Bayer Material Science AG.

TPU coated conveyor belts are used in temperature range [- 30…..+70]°C. The rubber covers according to DIN 22 102/1-91 or to the request of the customer.

TPU coated conveyor belts characteristics
Dimensions Width, mm 800 – 1300 ± 1%
Thickness of belt, mm 7 – 24
Thickness of covers, mm Request of the client
Deviation from thickness Belt Under 10mm ± 1mm
Over 10mm ± 10%
Rubber cover Under 4mm -0.2 mm/+ free
Over 4mm – 5%/+ free
Length, m Request of the client
Insertion’s characteristics Insertions number 2 – 5
Type of insertion EP80 EP100 EP125 EP160 EP200 EP250 EP315 EP400
Tensile strength, kgf, (for 50mm*200mm) Longitudinal 500 700 800 1000 1200 1500 2000 2200
Transversal 250 250 350 380 500 500 500 500
Mechanical properties of TPU Type Desmopan 385 E/S
Characteristics Standard of methods Values
Shore Hardeners, method A ISO 868 85
Tensile strength, MPA DIN 53504 51
Stain at break, % DIN 53504 425
Compression set 72h ; 23 °C,% ISO 815 25
Impact resilience,% ISO 4662 42
Tear propagation resistance, KN/m ISO 34-1 70
Density,kg/m3 ISO 1183 1200
Abrasion resistance, mm3,max. ISO 4649 30
Adhesion, kgf/cm, min. Between plies 5
Between insertions and rubber covers Under 1.5mm 3.5
Over 1.5mm 4.5
Edges Covered edges
Surfaces -both surfaces covered
Breaking force of conveyor belt,(kgf/cm) Is given by the type and number of insertions

 

Cover grade Tensile strength, min. (daN/cm2) Elongation at break, min. (%) Abrasion loss, max. (mm³)
Group Type Norm
1. X DIN 22102/1-91 250 450 120
2. Y DIN 22102 /1-91 200 400 150
3. Z DIN 22102/1-91 150 350 250