Heat shrinking polyester film roll

(57) A summary and subject The heat contraction nature polyester system film roll which can cut down the film for container clothing excellent in stable processability or printing nature with the sufficient yield is offered. Solution means The rate of heat contraction of the maximum contraction direction at the temperature of 85 °C uses the film roll which rolled round the heat contraction nature polyester system film which is not less than 20%. When this film roll covers the constant region of the film which the 溶融 specific resistance value at the temperature of 275 °C of the sample started from the roll is below 0.70x10ohm and cm, and was 巻回 (ed) by the roll at large and two or more samples are started, The thickness distribution value denoted by the following type in the sample of each logging part is 7% or less. Thickness distribution value = (the maximum thickness * minimum thickness) /average thickness x100