Improvements in the construction of hilesras for the manufacture of filaments, threads, crines and similar, artificial or synthetic (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of rows for the manufacture of artificial or synthetic hair and artificial filaments, characterized in that a metallic row of thickness greater than 1 5 mm is established. For the manufacture of any threads of horsehair threads and their artificial or synthetic counterparts further characterized by the fact that each of their holes has a cylindrical part that opens onto the inner front and a coaxial frustoconical part whose large base is located on the outer front the height of the cylindrical part being less than 5/100 of the total thickness of the die and the frustoconical part having an opening angle comprised between about 15 and 60º. (Machine-translation by Google Translate, not legally binding)