Compounding is a mixture of material and colouring powder with extruder cutting into pallet form.
Its advantages:

- Easy to use.
- Without the pollution problems of pigments.
- The process is easy to handle, and provides better the colouring powder diffusion.

It is often used by the production of demanding or large-scale products.

Nevertheless it also has its disadvantages:

- When being processed in local factory, large order quantity usually results in high stock cost but it is uneconomical for small order either. The Costs may be even higher when there is purging in the process of mixing colours.

- Increasing the burden of the warehouse stocking, and lowering its flexibility.

- The process, especially for the engineering plastic, inevitably alters the physical and mechanical natures of the plastic.

For further information, please e-mail to: dg.marketing@nhh.com.hk.