SHRINK FORCE MEASUREMENT OF LOW SHRINK FORCE FILMS

摘要

Blends of linear low density polyethylene (LLDPE) and high pressure low density polyethylene (LDPE) are often used to produce films with different shrink forces. The differences in these shrink forces can be observed in practical shrink film applications, although it has been difficult to quantify these differences in laboratory equipment. In this work, we explore the measurement of shrink forces of low shrink force films by various laboratory methods with examples given of the shrink forces measured on LLDPE/LDPE blends, which had proven difficult to measure by other existing techniques.