re:Flat yarn production technology indicators are divided into four categories:

Flat yarn production technology indicators are divided into four categories:
1, it is the index of physico-chemical modification, mainly including blending modification, mixing ratio, additive ratio of functional additives, blending ratio of waste regenerated materials;
2, is the physical and rheological indicators, the main draw ratio, blow ratio, draft ratio, retraction ratio;
3, is a mechanical performance indicators, mainly tensile breaking force, the relative pull-off force, elongation at break, linear velocity, linear density deviation;
4, is the tolerance size index, there are flat yarn thickness, flat yarn width and so on.