| abstract |
Even if the white heat-shrinkable polyester film roll containing titanium oxide is widened, the white heat-shrinkability that satisfies the following requirements for the purpose of suppressing the occurrence of processing troubles when processed using cut-out labels etc. Polyester film roll. (1) Film winding length 1000-20000m, film width 400-10000mm (2) Thermal contraction rate in the main contraction direction 50 to 85% (3.4) The difference between the maximum value and the minimum value of the heat shrinkage rate in the main shrinkage direction is 0 to 3% when sampled in the film width direction, and 0 to 3% when sampled in the film longitudinal direction. (5.6) Apparent specific gravity maximum and minimum values of the difference between the film width direction 0～0.01G / cm 3 when the sampled in, 0～0.010G when sampled in the longitudinal direction of the film / cm 3 |