Hollow board http://www.hbzkbc.com materials by forming plastic products with quantity, from the hopper into the barrel of the injection molding machine, change the screw push forward the material, together with this material outside receiver tube heating due to the material in the barrel is necessary to heat up, but also because of the volume decreases while the screw thread by austerity, plus changing between turning the screw thread so that the material advancement and material and barrel conflict between other conditioning, the material in the gradually pushed forward together is plasticized into a molten state. to melt the screw tip, the resistance of the nozzle due to the onset of counter-screw thread pushing pressure, followed by the amount of advancement of the screw push frit is increased, the onset of the melt pressure is gradually increased thrust reversers, when pressure is greater than the inverse of the screw cylinder piston thrust and conflict resistance (the resistance is the screw back pressure), screw the initial evacuation, with preliminary hopper feed metering Screw withdrawal from a distance the size of the injection quantity of injection molding products to choose, after a good travel limit switch is controlled by the pre-production adjustments. evacuation screw hit limit switch, the intermittent transition and withdrawal of the end of a pre- After Softeners program. plastic hollow board packing, cooling stereotypes arrive pre-set hour, namely solid molded end products. injection cylinder piston is pulled evacuation seat, 2nd preplasticizing preliminary screw, mold open, products are top of the cavity, the end of the whole process of plastic injection molded hollow plastic hollow plate after plate of the mold clamping end some action, the injection cylinder piston seat by pushing forward until the nozzle close to the bush; then, push the piston cylinder injection Screw sensitive forward, press the melt into the mold in the desired pressure and speed of movement, the write melt molding die cavity. In order to prevent the mold cavity is filled with melt material back and timely compensate melt cooling before curing, melt shortening, end of the injection nozzle still in the bush close to the mouth, and maintain a certain pressure, this process is called packing, cooling stereotypes. Our existing plastic hollow board hollow board, plastic hollow board hollow cardboard boxes and other materials provided, wholeheartedly welcome new and old customers to consult Oh!