A procedure for the manufacture of balls, particularly for the practice of the basque ball game in its different modalities. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the manufacture of balls, in particular for the practice of the basque ball game in its different modalities, characterized in that it comprises the operations of a) formulating a composition of plastic material taken from one or more of the group of polyesters, polyvinyl resins and polyamides, optionally with the usual auxiliary agents; b) feeding this composition to a melt injection molding machine, heating to a temperature above the melting point of the material; c) injection molding the balls at high pressures, using a mold with a smooth or preferably grained surface, as an "orange peel", d) allowing to cool; and e) demolding and, if necessary, eliminating any burrs or other defects. (Machine-translation by Google Translate, not legally binding)