Abstract: The stretch film for rustproof stretch packaging has an appropriate roll tack and sufficient self-tack to adhere to and package an object, such as a steel coil. This stretch film has an overall density of 0.870 to 0.935 g/cm3 and is composed of polyolefin resin, rust preventive agents, and an effective amount of a polyolefin polyol adhesive with a number average molecular weight of 500 to 5,000 g/mol. When the film has at least three layers, one surface layer has a density of 0.850 to 0.920 g/cm3, and another surface lever on the opposite side of the film and intermediate layers between them have greater densities. The polyolefin polyol adhesive and the rust preventive agents are present at least in the low density surface layer.

Abstract: A rustproof stretch film having an appropriate roll tack, and a self tack adhering to an object to be packaged without peeling when such an object is, for instance, a steel coil. The rustproof stretch film consists of a single layer film or multi-layer film composed of polyolefine resin and includes low molecular weight polyolefin polyol functioning as adhesives, and rust preventive agents, whose overall density is within a range of 0.870-0.935 g/cm3.