UN PROCEDIMIENTO PARA CONFECCIONAR UN MATERIAL DE RELLENO FLOJO,DE BAJA DENSIDAD DE MASA(COMO DIVISIONAL DE LA PATENTE NUMERO 514.802)

摘要

The invention relates to a process for producing a loose packing or filling material consisting of hollow bodies which are substantially hemispherical and are made from a synthetic plastics composition which can be extruded and expanded.