PURPOSE: To obtain a mold release material sheet, comprising a specific polyolefin (co)polymer, producible by removing a solvent, excellent in mold releasability and nonmigrating properties and hardly causing the fall of the load from a truck even when stacking packaged materials packaged with corrugate boards in many stages at the time of storing thereof, etc.

CONSTITUTION: This mold release material sheet is obtained by forming a layer, comprising a polyolefin (co)polymer, prepared by (co)polymerizing a 6-30C olefin such as 1-hexene and having ≥100 average degree of polymerization and ≤3 molecular weight distribution and having the mold releasability (having preferably 0.1-1000μm thickness) on a substrate such as woodfree paper.