Abstract
Recently speed of industrial sewing machine has been required more and more, and furthermore, many kinds of new synthetic fibers have been used in every fields of dress makers. Owing to this fact, many problems caused by the overheat of sewing machine needle have come up.
In order to clear this problem, the authors measured the temperature of sewing needle in operation, in relation to the sewing materials, thickness of fabric, size of needle and operational speed of sewing machine.
There are many kinds of method to measure the temperature of the needle, and the authors picked up the "Potentiometer Method" as the most suitable one for this experiment.
