|
Dust-free feeding of pigments and additive masterbatches. True to recipe. Masterbatch manufacturing using twin-screw compounders.
In the plastics industry, concentrates of pig-ments and additives in a polymer matrix are characterized by the term Masterbatch (MB). This is usually in the form of pellets. Depend-ing on the pigment type, a distinction is drawn between white masterbatch, black master-batch, colored masterbatch and additive masterbatch. They are used for dust-free, precise feeding of pigments and additives into polymers and compounds.
The preparation of masterbatch is a highly demanding compounding task, since in most instances high proportions of pigments and additives need to be worked into a base polymer. Par-ticularly suited to this task are the twin-screw, co-rotating compounders such as the ZSK MEGAcompounder or ZSK MEGAvolume.
| 3 Processes for masterbatch production |  |  |
|
Premix process
|
|
 |
| |
|
|
|
Split-feed process
|
|
 |
| |
|
|
|
Color-matching process
|
|
 |
| |
|
|
|
ZSK MEGAvolume for masterbatch
|
|
|
|
|
|
|
|