A scholar approach was used in performing an experiment done under process
conditions during extrusion of polypropylene strip type 450 tex-2223 from pure
and admixture granulate FY-6. Studied were the interaction factors during
technological process using the theory of multiple and partial correlation. The
dependence between the strip fineness, which was dependently variable, on the line
operation time interval (hi) and the temperature (ti), regulated by warm air flow in
the strip stretching chamber, was studied. The line speed was kept constant.
Compared was the goodness degree of two strip products, one made from pure
granulate and the other with an admixture of the secondary regenerate type FY-6
up to 8%, under the same production and technological conditions. It has been
proven that the continuous line operation time with pure granulate compared to the
granulate containing 8% of secondary impurities was 88/72 [h].
