While Plastixx covers the major thermoplastics as a whole, the Plastixx ST shows the price development of standard plastics and Plastixx TT that of engineering thermoplastics. The index base for Plastixx, Plastixx ST and Plastixx TT is January 2002 with 1,000 points.
With an index base of 1,000 points in January 2010, the Plastixx Composites is drawn up every month in cooperation with AVK – Industrievereinigung Kunststoffe and reflects market prices of resins and glass fibres used in the manufacture of glass fibre-reinforced plastics (GFR).
Plastixx reflects the price movements of LD/LLDPE, HDPE, PP, PVC, PS, PET and ABS, PA, PC, PMMA, POM and PBT according to the principle of the "Paasche Index". The Plastixx Composites reflects the average European market prices for ortho resins, chopped strand mats and direct roving. The monthly index calculation is based on the average monthly market prices of the materials, weighted according to western European consumption volumes. The weighting by consumption volumes is updated annually.