LASTRE PERFORATE IN MATERIALE TERMOPLASTICO ADATTE IN PARTICOLARE ALLA PREPARAZIONE DI CONTENITORIPER PRODOTTI ALIMENTARI.

摘要

Thermoplastic material perforated boards particularly suitable for the production of containers for food-stuffs are obtained starting from premolded boards consisting of walls separated by hollow spaces by using a perforating device comprising a cylindrical body ending with a cone-shaped or truncated cone-shaped tip, comprising a fixed needle or a movable coaxial needle connected with a piston.