▎ 摘　　要

NOVELTY - Blow molding of high ductility antibacterial polyethylene preservative film comprises e.g. (i) debugging the device and adjusting the inclination angle of the air nozzle, opening and closing degree of the herringbone group; (ii) equipping with polyethylene resin, calcium carbonate, iodized chitosan glue, gelatin glue, graphene, hyaluronic acid glue, antioxidant, antistatic masterbatch, plasticizer and light stabilizer and heating; (iii) transferring material, turning on motor and a winding motor synchronously, injecting hot melted the raw material into the conveying tank of the blowing device through the feeding hopper for pre-blowing expansion, sealing upper opening of the thin tube extruded, expanding, cooling, passing through the upper end of the herringbone group and bypassing the roller group to be pulled to the reel; and (iv) stabilizing the inflated film, cutting off a section of the initially blown film and winding the film with stable expansion on the reel. USE - The method is useful for blow molding of high ductility antibacterial polyethylene preservative film is useful for household packaging of vegetable and fruit. ADVANTAGE - The method prepares polyethylene preservative film with high ductility and antibacterial property, and reduces the debugging difficulty of the device. DETAILED DESCRIPTION - Blow molding of high ductility antibacterial polyethylene preservative film comprises (i) debugging the device, adjusting the inclination angle of the air nozzle, opening and closing degree of the herringbone group, and the speed of the output end of the winding motor according to the ductility of the pre-produced plastic wrap material; (ii) equipping with polyethylene resin, calcium carbonate, iodized chitosan glue, gelatin glue, graphene, hyaluronic acid glue, antioxidant, antistatic masterbatch, plasticizer and light stabilizer, adding the proportioned raw materials into the hot melting furnace and heating to melt completely; (iii) transferring material, turning on motor and a winding motor synchronously, injecting hot melted the raw material into the conveying tank of the blowing device through the feeding hopper for pre-blowing expansion, sealing upper opening of the thin tube extruded from the upper opening of the material cavity, leaving a small gap for the air to discharge, expanding, cooling, passing through the upper end of the herringbone group and bypassing the roller group to be pulled to the reel; and (iv) stabilizing the inflated film, cutting off a section of the initially blown film with different thicknesses, and winding the film with stable expansion on the reel. An INDEPENDENT CLAIM is also included for device for blow molding, comprises a rack one side is detachably provided with a mounting rack, forming box is vertically fixed on the central position of the rack, an extruding structure is installed on the mounting frame for extruding the raw material after hot melting into the forming box, a blowing mechanism is set on the top part box, the blowing mechanism is used for expanding the tubular preservative film raw material extruded from the forming box top part a film by means of air outlet, a clamping mechanism is set above the blowing mechanism and is installed on the rack through the vertical frame for expanding and cooling the thin film is laminated into two layers, a rolling mechanism is set on one side of the rack far away from the mounting frame, the rolling mechanism is used for folding the film into two layers after the clamping mechanism is folded into two layers, the extruding mechanism comprises a conveying tank is horizontally arranged on the mounting frame, a heat preservation shell along the length direction of the mounting frame, a feeding hopper is set above one end of the insulating shell far away from the rolling mechanism, the lower part of the feeding hopper passes through the insulating shell and communicates in the inner part of the conveying tank, a driving shaft passes through one end of the conveying tank, a section of the driving shaft is extending into the material conveying tank is fixedly provided with a spiral blade, the lower part of one side of the material conveying tank close to the forming box is provided with a discharging port and the discharging port is connected with one side of the lower part of the forming box through the feeding channel.