Grupo Compañía General de Carbones, S.A.
Sevilla, 6 28014 - Madrid - Spain
 Tel: +34 91 701 87 00 
 Fax: +34 91 701 87 40 
cgc@grupo-cgc.com
Castellano

Reciclado de Neumáticos de Castilla y León

COMMERCIAL NAME: NECALFLEX

Made up of vulcanised rubber (SBR) granules and dust, which are produced when the tyres are ground up.
High quality product that contains no textile fibres or metal particles.

Chemical Properties Min(%) Max(%)
Acetone Extract 5 10
Polymers NR/SR 50 55
Carbon Black 30 38
Ash 7 10
Physical Properties
Specific Weight 1,1 - 1,27 grs/cm³
Colour Black
Odour Rubber
Purity Contains no foreign materials
Humidity <1%
Granules Type Size(mm)  
Typical Grain Size
» Medium
» Fine
» Powder
Large granules GGA 1,5 - 7,0
Medium granules GMA 1,5 - 4,0
Fine granules GFA 0,5 - 2,0
Powder PA 0,0 - 0,8
Powder PFA 0,0 - 0,6
Granules size