METHODS FOR TREATMENT AND MANUFACTURE OF PELLETS

摘要

Method for treatment of pellets (1) comprising a thermoplastic polymer sheath (2) surrounding glass filaments (3), which glass filaments are covered at least in part with an impregnating agent and extend in a longitudinal direction of the pellets, the method comprising maintaining the pellets for a period of time at an elevated temperature. The method results in an improved impregnation of glass filaments in the pellets resulting in (a) lower amounts of glass separating from the pellets when such are subjected to repetitive mechanical loads and (b) less agglomerations of glass filaments in moulded products manufactured from the pellets.

主权项

1. A method for treatment of pellets comprising a thermoplastic polymer sheath surrounding glass filaments, which glass filaments are covered at least in part with an impregnating agent and extend in a longitudinal direction of the pellets, the method comprising maintaining the pellets for a period of time at an elevated temperature of at least the melting temperature of the impregnating agent wherein the melting temperature of the impregnating agent is lower than a melting temperature of the thermoplastic polymer sheath and wherein the elevated temperature is lower than the melting temperature of the thermoplastic polymer sheath.