SYSTEME DE CONTROLE DES CASSES DE FIBRES THERMOPLASTIQUES

摘要

A system for controlling strand drop off at an extrusion die in a plastic stranding operation is provided. A plurality of hot polymer strands generally uniformly spaced from one another in a horizontal direction from the extrusion die pass downwardly into a cooling bath beneath a hold down bar assembly. The continuously moving strands slidably engage circumferential surface portions of a cylindrical member positioned in the surface of the cooling bath which is revolvably driven by the strands passing thereover. When a strand breaks, it almost immediately contacts an adjacent strand and is immediately bonded thereto, all strands still being in a thermoplastic condition, so that all strands continue to move forward down into the cooling bath without loss of the broken strand.