▎ 摘　　要

NOVELTY - Stretch wrapping film comprises an outer film, a middle film and an inner film laminated in sequence. The outer film and inner film comprises 60-90 pts. wt. metallocene polyethylene, and 200-250 pts. wt. linear low-density polyethylene. The middle layer film comprises 120-180 pts. wt. metallocene polyethylene, and 400-500 pts. wt. linear low-density polyethylene. USE - The stretch wrapping film is useful in machine. ADVANTAGE - The machine stretch wrapping film has high tensile strength, strong puncture resistance, good barrier property, and good transparency, and prevents inner film from being atomized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of stretch wrapping film for machine, comprising adding the raw materials of the outer layer film, inner layer film and middle layer film into the hopper, casting and extruding, cooling and shaping, coiling, and winding to obtain machine stretched stretch film.