Wörterbuch (en): Extender / Filler
de:
Füllstoff (m)
fr:
Remplissage (m) / Charge (f)
it:
Carica (f)
es:
Carga (f) / Relleno (m)
Fillers are insoluble additives which are added in high content to the base material, changing the mechanical, electrical or processing properties of materials significantly and at the same time significantly reducing the proportion of the typically more expensive matrix in the finished product.