In the production process, the stretching of the woven bag cutting machine flat yarn is to heat the cooled and shaped flat yarn to above the glass transition temperature and below the softening point, so that the polymer molecular chain of the woven bag cutting machine is smooth at a large level. The orderly arrangement of the stretching direction increases the gravitational force between the molecular chains and improves the relative breaking force of the flat yarn.
Therefore, an effective way to control the relative breaking force of the flat wire is to set an appropriate stretching ratio. The greater the stretching ratio of the woven bag cutting machine, the higher the relative breaking force of the flat yarn. Regarding the size of the stretching ratio of the flat yarn, it is confirmed by the relative breaking force and breaking elongation of the flat yarn.
