▎ 摘　　要

NOVELTY - Co-extrusion type antibacterial function non-primed matting film comprises a film body, where the film body sequentially comprises an antibacterial agent layer, a matting layer, an antistatic layer, a support layer, an adhesive layer and an anti-blocking agent layer arranged from top to bottom, and the antibacterial component of the antibacterial agent layer comprises graphene and its derivatives, sodium hypochlorite, nano silver, cuprous oxide, zinc oxide, polyhexamethylene biguanide hydrochloride, polyhexamethylene guanidine hydrochloride , Polyhexamethyleneguanidine phosphate, silicone quaternary ammonium salt, and/or peony root bark extract. USE - Co-extrusion type antibacterial function non-primed matting film. ADVANTAGE - The film has excellent antibacterial and anti-pollution ability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the film involving (a) obtaining 0.05-6 wt.% antibacterial agent layer, 1.5-30 wt.% matting layer, 0.01-0.06 wt.% anti-blocking agent layer, 0.6-6 wt.% adhesive layer, 1.5-30 wt.% antistatic layer, and 0.98-0.79 wt.% support layer, (b) melting and extruding the obtained raw materials on a main and auxiliary extruders, and subjecting die after metering and filtering, (c) casting sheet by placing the melt extruded from the extrusion die to a surface of a quench roll and forming a thick cast sheet under treatments of air knife, chill roll, water bath and guide rolling, (d) drawing a thick cast film, stretching it longitudinally under the action of stretching rollers with different roller speeds before and after the longitudinal stretching machine and heating roller in the middle at a lengthening ratio of 4-6 times, (e) stretching on a horizontal stretching machine by clamping the two sides of the film with chain clamps, moving forward along the gradually widening track, passing heating area and shaping area, and increasing the width of the film by 8-10 times, (f) trimming, carrying out thickness measurement and corona treatments and rolling the film into a cylindrical film roll, (g) after the film roll is unrolled from the production line, subjecting the qualified semi-finished product to a relatively closed holding room at 20-40 degrees C for 24-72 hours, and (h) subjecting the cured film rolls to slitting and packaging process, and cutting into finished products with a predetermined length and width for packaging.