3. Pigment selection criteria

3.1 General

Which pigments should be selected to meet the required technical specifications, while keeping coloring costs as low as possible?

For the person responsible for coloring, it is essential to know the process used to transform the thermoplastic material and the requirements for the end use of the finished product.

The diversity of characteristics required for the final object means that the choice of pigments or colorants to be used requires an in-depth analysis of the specifications on a case-by-case basis.

The cost of colouring is then a compromise relative to the following pigment selection criteria:

• coloring properties ;

• ...