PROCEDE ET DISPOSITIF DE RAINAGE D'UNE BANDE OU FEUILLE DE MATIERE SEMI-RIGIDE, NOTAMMENT DE PAPIER-CARTON, EN VUE DE SON PLIAGE

摘要

The process consists of running the semi-rigid sheet (3) between a rotated cylinder (9) and an opposite fixed grooving plate (11). The plate is provided with a male or female groove and the cylinder with an opposite complementary groove (17). The sheet is driven by the cylinder sliding on the plate and by pressure undergoes grooving.