Query Related To Thread

Q. While sewing in lockstitch machine when thread is exhausted and the thread cop is replaced, though the thread is of the same count ( ticket no.) and colour, why sometimes needle thread tension needs to be adjusted?

Ans. Readjusting of tension after changing the cop: Normally the winding properties ought to be so even that there is no need to readjust the tension when changing the spool. If this is necessary, this may have the following reasons :

For Gutermann as a producer of polyester threads, different winding properties are mostly unknown. Each dyeing lot is tested in respect of the winding properties: they must be very even- not too low or too high. The tension on the machine needed can also be influenced by the needle count and the fabric. This has to be considered.