Polish version

Modification of thermoplastic materials with natural polymers

The subject of the offer are composites with polyolefin or poly(vinyl chloride) matrix filled with cellulose fiber of various origin (e.g.: waste from newspapers or chipboards grinding and waste cellulose from paper industry or wood flour), destined for processing with extrusion, compression molding or injection molding.

A brief description of the process

The composite granulate is obtained by extrusion and then various products are made from it with the injection molding method. If the composites are used to obtain extruded cross-sections, the granulation step can be omitted in the extrusion process.

Advantages of the technology offered

Thermoplastic materials used in the composites can be primary or they can be partly or entirely substituted with appropriate waste material. It can be an agglomerate from packaging foil or PVC waste left from copper recovery from cables.


  • extruding line for production of granulates or extruded cross-sections,
  • injection molding machine of size depending on the obtained product.

Advancement of proceedings

The composite granulate have been obtained by extrusion in semi-technical tests. The tensile properties, flexular properties and impact strength have been carried out. Investigations of degradability by aging in different conditions of use have been carried out too. The various products about different largeness are made from the composites by the injection molding and compression molding (e.g. flowerpots). Composites have been used to obtain extruded cross-sections without the granulation step.


PL 194 586 (2006) „The method of manufacture of cellulose fibre from waste paper”.

Market competitiveness

Silver medal at Brussels Eureka „The Belgian and International Trade Fair for Technological Innovation” 2009.

Type of expected cooperation

Assistance in carrying out of extrusion and injection molding tests on the industrial scale.


Ewa Spasówka, M. Sc.

phone +48 22 568 25 01