Springer Online Journal Archives 1860-2000
Process Engineering, Biotechnology, Nutrition Technology
Conclusions A technological process has been developed for preparing modified film yarns from a mixture of polypropylene and low density polyethylene having a content of the latter up to 10% by wt.; these yarns are used to make goods for national consumption or technical articles, with an economic advantage of 50 rubles per metric ton of yarn. When small additions of LDPE are introduced into polypropylene, an increase in the degree of yarn stretch is observed. The suggestion has been made that small additions of LDPE “heal” defects in the structure of oriented polypropylene, which is prone to spontaneous fibrillation; this aids in obtaining yarns with increased strength, elasticity, and lower tendency to split.
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