B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
B—PERFORMING OPERATIONS; TRANSPORTING
B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31B70/00—Making flexible containers, e.g. envelopes or bags
Machine automatique pour la formation d'un noeud a l'aide d'une ficelle en extremite d'une gaine tubulaire en vue de l'obturer par constriction sous l'effet du serrage du noeud
Pinces perfectionnees pour l'etirage prealable transversal et pour le pliage des bords lateraux du film de conditionnement sur les machines de conditionnement de produits sous film extensible.