The application discloses a manufacturing process of a
stamping processing protective film, which comprises the following steps: step one, stirring and mixing
zinc oxide, polysebacic acid-decanediol
diol and dicyclohexyl
carbodiimide at 50-60 DEG C to obtain material A; step two, putting 100 parts of low-density
polyethylene with a melt index of 0.5-5 g / 10 min,
metallocene linear low-density
polyethylene with a melt index of 1.8-2 g / 10 min,
oleic acid amide,
zinc stearate,
stearate and an
antioxidant into a mixer, uniformly mixing and then extruding and granulating in a double-screw extruder to obtain material B; step three, putting material A, material B and terpolymer
polypropylene into a banbury mixer, discharging after banburying for 10-30 min to obtain a master batch; and step four,
blow molding the master batch to obtain a
polyethylene base material layer. The protective film improves the elongation at break of the film and also improves the
puncture resistance of the protective film.