How to solve the problem of Balata expansion on load application?


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Iris Phillips answered
If the correct weight of Balata belting has been selected for the expected loads, there should be little to no expansion at all. If there is expansion, the solution is to either reduce work loads or increase the weight of the installed belt.

  • Excessive External Heat
Excessive heat may cause a problem, as the Balata itself may become too soft. In this case, measures to reduce temperatures should solve the problem.

  • What is Balata?
Balata is a very low-elastic natural latex produced from the sap of the Balata tree, Manilkara bidentata. As well as being virtually non-elastic, it has excellent penetrating power when used in solutions to render fabrics both solid and waterproof, and it is oxidation resistant.

  • Balata Belts
Balata Belts are manufactured by saturating high grade cotton duck with a high quality, clean solution of Balata. After the evaporation of the solvent, the treated duck is heated to partially melt the Balata. At this point, it is folded under heavy pressure into the required number of plies.

The belt is then passed through heavy rollers and tested by the application of extreme tension. As a result of this process, Balata belts have excellent tensile strength and are true running.

  • What is Cotton Duck
The cotton duck used in Balata belting is a fabric woven from high quality fibers, preferably American long staple cotton. This achieves the best results for uniform strength and suppleness, as well as being able to withstand transmission strains.

For belting, the duck must be tightly woven from tightly spun cotton. In addition, the weft and warp have to be of equal strength. Although most of the tension is carried by the warp, it has to be effectively supported by the weft to avoid stretching.

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