Abstract:

Samples of experimental tape yarns of different width, linear density, and composition data, i.e. composed from blends of polyolefins, namely polypropylene (PP) with linear lowdensity polyethylene (LLDPE) (1-octene comonomer), and additives were produced on an extruder E10 (Barmag Saurer Co., Germany). The yarns were made from extruded film which was cut into tapes. The various tensile properties of the tape yarns were studied by applying a tensile test. In this study, values of the breaking force, breaking tenacity, elongation at break, work of break, and specific work of break of the tape yarns are presented. According to this study, the tensile behaviour of tape yarns is non uniform in the film width. The influences of the additive, namely of Granic 422 (Granic Co., Spain), on the breaking characteristics of the tape yarns are also discussed. It was found that such characteristics as the linear densities and breaking tenacities were definitely conditioned by variable quantities of the additive, but other breaking characteristics for different tape yarns were almost the same size.