The impact of a change in some of the operational methods used in the production of polyethylene yarn on her performance career

The physical and mechanical properties of polyethylene yarns are being influenced by changing in some operational techniques used in manufacture process, also the difference in the amount of the additives which adding during the manufacture process, effect on this properties.

The screw speed and the distance between the die (spinnter)and the surface of cooling bath have been chosen as variables to study their effect on the properties of polyethylene yarns. Also, the amount of Masterbatch have been changed to study the impact of this change on the properties of yarns. Samples of polyethylene yarns have been produced by using high density polyethylene on monofilament line. The laboratory tests have been done for some properties such as Number of yarn, Tensile Strength, Elongation, Abrasion Resistance, and the Stability of the dye to light. The results have shown that screw speed  is directly proportional to all properties, while the distance between the die and the surface of cooling bath is directly proportional to each of elongation, abrasion resistance, and intensity of color, but is inversely proportional to each of number of yarn and tensile strength, as for the amount of masterbatch is directly proportional to number of yarn and intensity of color, but inversely proportional to tensile strength, elongation, abrasion resistance. The amount (150gm) of masterbatch have been achieved a higher degree of stability of color where it has given less differences in intensity of color.