Özet:

This article is about measuring sewing needle temperatures of three different coated sewing needlesCr (Chrome), PTFE(Polytetrafluoroethylene) and TiN (Titanium nitride)on an industrial lockstitch machine. The needle temperature testing was performedwith varying needle size, stitch density and machine speed (rpm). To measure the sewing needletemperature ‘K’ type thermocouple is used.It was established, according to the results obtained at the end of the measurements that there is a strong linear relation between the speed of the sewing machine, and the sewing needle temperature also the materials used in the needle coating and needle numberdirectly affect the heating of the needles. The needles coated with TiN, has been found with less needle heat-up results. The use of minimum stitch density is recommended.

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