Basic Properties of Tapes Containing Variable Amounts of Special Additive for Maintenance of Whiteness

Abstract

The present paper studies the effects of the additions between 3.00 and 7.00 wt% of additive Granic 422 instead of polypropylene on polymeric tapes properties as color difference, structure and tensile parameters. Micro-structural analysis revealed additional agglomerations of calcium carbonate particles on the surfaces of the tapes after application of new portions of the variable additive. Compositionproperty relations showing the changes in properties of tapes were suggested. For increase in color difference of the tapes from zero to 0.18, a logarithmic relation was used. For other indices, the linear relations were proposed. On the basis of the relations, the positive changes of 2.0-2.7% in macrostructural parameters (width, thickness, linear density) and negative changes of 2.1-8.8% in tensile characteristics were obtained.