Barrier film, packaging material and packaging body

Abstract

A barrier film (100) includes: a polyethylene layer (101) and a barrier resin layer (102), wherein the polyethylene layer (101) comprises an ethylene-based polymer, and the barrier resin layer (102) comprises a barrier resin, wherein the tensile modulus in the MD direction, measured according to JIS K7127:1999 using a tensile testing machine at a test temperature of 23±2℃, 50±5%RH, and a tensile speed of 5 mm / min, is ≥1200 MPa and ≤3300 MPa, and the thermal shrinkage rate in the MD direction, measured according to JIS C2151:2019, is ≤12.3% when heat-treated at 120℃ for 15 minutes. A barrier film (100) including a polyethylene layer (101) and a barrier resin layer (102), in which the polyethylene layer (101) contains an ethylene-based polymer, the barrier resin layer (102) contains a barrier resin, and the tensile modulus in the MD direction is 1200 MPa or more and 3300 MPa or less, as measured using a tensile testing machine in accordance with JIS K7127:1999 under the conditions of a measurement temperature of 23±2 °C, 50±5% RH, and a tensile speed of 5 mm / min, and the thermal shrinkage rate in the MD direction is 12.3% or less during heat treatment at 120 °C for 15 minutes, as measured in accordance with JIS C2151:2019.

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