Expanding agents

The expanding agents are additives which allow, with equal volume, the lightening of the final product. They can be used in all processing technologies: injection molding, extrusion, rotational molding and compounding.

The expanding agents are in the following forms:


exclusive additive produced by Raiex in liquid form, following tailor made formulas developed on the basis of specifications provided by the customer. Compared to coloring masterbatch, to traditional foaming master in which the additive is mixed with wax or polyolefins, the foaming liquids have the advantage of not being based on polymers that may interfere with the final characteristics of the final product. They can therefore be used with all polymers, avoiding the problem of using different masterbatches according to the type of product. The big advantage of the liquid foaming is given but the small quantity that can be used compared to the usual granules ones, giving back a much better perfomance.



home made or traded in different formulas.



  • thermoexpandable microspheres produced by the japanese SEKISUI Chemicals, in partnership with Raiex in Italy
  • expandable mix based on calcium carbonate
  • azodicarbonamide