SUSTAINABLE PRODUCTS FOR EVERY APPLICATION
Polymer foaming provides the materials with a porous or cellular structure. The foaming process makes the polymers less dense (much lower than non-foam plastics) converting the material into a good thermal insulator with good energy absorption qualities, too.
Normally, in order to foam polyethylene (XPE), polypropylene (XPP) or polystyrene (XPS), a nucleating filler is used in very low percentages (no greater than 1%). This filler enables the formation of air cells within the polymer matrix, which gives the polymer its foamy appearance.
The foams for which the GCR Group has developed solutions are:
XPE – Polyethylene Foam. It is used in the construction and automotive industries.
XPP – Polypropylene Foam. It is used in internal layers to reduce the density in all types of rigid packaging such as bottles, trays, glasses, etc.
XPS – Polystyrene Foam. It is mainly used as thermal insulation in the construction and food packaging industries (coffee cups, trays, etc.).
For this use, the GCR Group has developed several Granic masterbatches that allow the formation of more homogeneous and smaller cells, due to the excellent dispersion of the mineral. These features provide improved mechanical properties, an improved barrier to prevent water and oxygen penetration and a higher cell resistance.