PC/PE/PP Hollow Grid Plate Extrusion Line， PP hollow sheet making machine, PP twin wall sheet making machine, PP packing box production line, PP corrugatd sheet making machine This PP hollow sheet production line realizes continuous production of PC/PE/PP hollow grid plate, which is applicable to construction decoration, advertisement collocation, and noise insulation of highway as well as packaging. PE/PP hollow grid plate is an ideal substitute for paper box in making packaging box. It is characterized by light weight, high intensity, dam-proof, and anti corrosion. The width of the products is 1220-2100 mm, and the thickness is 2 mm-12 mm.    Machine pictures for PP hollow sheet extrusion line: 1,Material mixing silo for PP hollow sheet making machine: it is used for mixing PP material with filling masterbatch and color masterbatch 2, Extruder for PP hollow sheet making machine: The specially designed screw and the advanced controlling system ensure excellent palatalization, high output and stable extruding. if customer want to use recyle material, we also can equip co-extrusion line for making double layer PP hollow sheet, inner layer can use recycled PP material, and upper layer can use new PP material.    3, die head and mold for PP hollow sheet making machine:  we can equip the die head   Screen changer for PP hollow sheet making machine : Quick screen changer of hydraulic system ensures the short course of screen changing. Double-position combined with special sealing structure guarantee stable operation of screen changer. Mould: Mould adopts high-quality alloy steel and throttling device to ensure even pressure of feed influent at the mould lips, and also differential action of up-down piece guarantee even thickness of the plate. Vacuum calibrating table for PP hollow sheet making machine: Heating exchanging and cooling system of quick speed in calibrating system alternate effectively and ordinarily with vacuum system, which ensures calibrating precision. Vacuum system composes two independent subsystems and each is equipped with several fixed circulating vacuum lines of three-point type. Meanwhile, each line carries vacuum regulating system and vacuum display system that realize even and stable vacuum degree of plate surface. Tractor for PP hollow sheet making machine: There are two tractors. The first one is high power, high reduction ratio, multi-roller type, well low-speed operation, high traction and is able to draw the plate up from the calibrating table evenly and synchronous. The second one is designed to remove stress, and in addition it is equipped with edge-cutting device to ensure the valid width and smooth cut of the edges. Stress remover for PP hollow sheet making machine:The advanced large area conductive heating mode can effectively remove the stress of plate and further improve plainness of the plate. Cutting machine for PP hollow sheet making machine: Accurate instant length-fixed cutting and automatic up-down discharging system combined with alloy steel sharp blade realize high quality of cutting. Final product and application made by PP hollow sheet making machine: