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What is The Ply in Rubber Conveyor Belt ?

Multi-Ply Rubber Conveyor Belt

Conveyor belts are usually made of leather, fabric and rubber. Some rubber conveyor belts use a ply of fabric and cover the rubber. Most conveyor belts are made of two or multi-ply of fabric or other materials.

An important factor for the strength and elongation of the conveyor belt is the number of fabric ply in the carcass of the conveyor belt.

Let’s use a simple example to illustrate. If you try to stretch a sheet, you don’t have much resistance. Fold the sheets twice to make 4 plies. It’s much more difficult to stretch these four sheets. For textile conveyor said, this is a similar result. As a result, we usually combine multi ply of fabric together to achieve the desired properties.

Note that more plies does not necessarily mean that the belt is stronger e.g. a 630/2 (2 ply) is stronger than a 500/3 (3 ply).

Adding more layers to the belt increases strength, but also affects flexibility. The design of conveying system usually needs to consider the specification of conveyor belt.

Some common design considerations include minimum pulley diameter, idler, belt width and grooving.

A common example is pulley diameter. If the conveyor diameter is small, higher belt elasticity is required to effectively wind on the pulley.

Similarly, too many layers of fabric can put too much pressure on the conveyor belt, resulting in a faster failure rate.

If you want to know more about multi-ply rubber conveyor belt, please contact us.