Polish version

Modification of thermoplastic materials with waste from annual plants

The subject of this research are composites, with a matrix in the form of polyolefin waste or poly(vinyl chloride), left from the process to recover copper from cables, filled with comminuted waste from annual plants (straw from: rape, oats, barley, rye, wheat and triticale), processed by extruding, compression molding or injection molding.

A brief description of the process

Components of the composite are mixed in an extruder and then processed 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

Straw from annual plants is a kind of waste of virtually no use (they are used as bedding for domestic cattle or incinerated). The proposed solution will allow to use them as fillers (in the amount up to 50 wt. %) in composites made of waste thermoplastic materials.


  • extrusion granulating line,
  • injection molding machine,
  • press.

Advancement of proceedings

Laboratory scale.


Patent PL 208723 (2011) „Poly(vinyl chloride) composition with a natural filler”.

Patent PL 208799 (2011) „Biodegradable polymeric composite”.

Patent application No P-383 567 (2007) „Polyolefin composition with a natural filler”.

Market competitiveness

No similar solutions on the domestic and foreign market.

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