1, the quality of the sewing thread is not required. Should be replaced in a timely manner to prevent damage to the woven bag.
2, sewing machine improper adjustment. The parameters of the sewing machine should be re-tuned.
3, over the line parts have sharp mouth. Replace the damaged parts in time to avoid injury to people.
4, the operating method is problematic. It should be produced according to the operation specification.
5, the needle cooling is not sufficient. You can wait a few moments to wait for thorough cooling before operation.