Heat-shrinkable polyester-based film roll

A film roll of a heat-shrinkable polyester film, wherein

• a polyester of the polyester film contains 5 mass % or more and 50 mass % or less of recycled raw material from a PET bottle and an acid component of the polyester comprises isophthalic acid, and
• the film roll satisfies the following requirements (1) to (3):
• (1) an average value of a shrinkage in a main shrinkage direction of the film samples collected at every 100 m in a longitudinal direction of the film roll is 40% or more when the film samples are soaked in hot water of 90° C. for 10 seconds, and each of the shrinkage of the film samples is within ±3% of the average value;
• (2) isophthalic acid ratio in 100 mol % of whole acid components contained in polyester constituting each of the film samples collected at every 100 m in a longitudinal direction of the film roll is within +0.3 mol % of an average value of isophthalic acid ratio of all the film samples, wherein the average value of isophthalic acid ratio is 0.3 mol % or more and 3.0 mol % or less in 100 mol % of the whole acid components in polyester of the film samples collected at every 100 m in the longitudinal direction of the film roll;
• and
• (3) the film roll satisfies thickness unevenness of 20% or less in the longitudinal direction of the film roll.