Apparatus for heating synthetic yarns.

摘要

Heating apparatus with high corrosion resistance, good molding characteristics and even distribution of temperature is proposed. In a heating apparatus, which is heated at a temperature higher than 250C and which is disposed upstream a twisting device for heat setting twists imparted into a synthetic yarn by the twisting device and run back along the yarn while the heating apparatus is in a substantially non-contacting condition with the yarn running there-through, the a material of a heating plate of the heating apparatus is a copper alloy, the copper content of which is at least 60%, and the aluminum content of which is at least 3%.