Stretch membrane

Abstract

The objective of this invention is to provide an extended film with excellent heat-processing properties and suppression of zipper effect and / or poor adhesion. This objective is achieved by an extended film containing polyethylene resin, wherein the average coefficient of linear expansion of the extended film at a temperature of 30°C to 85°C with a heating rate of 10°C / min in at least one of the length and width directions is 8.00 × 10⁻⁴ / °C or less, and the peel force of at least one side at a peel speed of 50 mm / min measured in a 180° peel test is 4.00 N / 25 mm or less.