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Views: 3 Author: Site Editor Publish Time: 2020-10-20 Origin: Site
About XPS extruded board equipment, welcome customers to consult Hebei Greenson
XPS extruded polystyrene foam sheet production line is a kind of insulation board made of polystyrene and foaming agent through high temperature extrusion. At present, HCFC is mainly used as foaming agent in the industry. Fluorochlorohydrin foaming agent damages
The potential value of the ozone layer is relatively high. At present, my country has gradually restricted the use of chlorofluorohydrogen.
According to market conditions, Greenson Building Materials Technology Co., Ltd. introduces excellent technology and tailor-made CO2 extruded board equipment for customers. CO2 completely replaces chlorofluorohydrogen foaming agent and truly realizes fluorine-free foaming process. According to the various needs of customers, it can also share a variety of foaming agents, one machine for multiple purposes, the whole process is controlled by a central computer, and the production process is intelligent.
Working principle of XPS extruded sheet production line:
The main raw material used in the XPS foamed board production line is new or recycled polystyrene (PS) particles. Usually, additives such as masterbatch or flame retardant are added, and the mixed raw materials are fed to the first-stage extrusion unit for melting Plasticization and stirring, continuous injection of blowing agent (such as freon, butane, carbon dioxide CO2, etc.) and rapid mixing and pressurization, and then extruding through a hydraulic screen changer to filter out impurities in the fluid polymer, and then the mixture It is sent to the second-stage extrusion unit to further fully mix and cool down. At this stage, the polymer temperature and pressure are accurately controlled, and then it is extruded through the die. At this time, the blowing agent mixed in the polymer to maintain high pressure is in When the pressure is released instantly, the blowing agent vaporizes to form a lot of independent tiny bubbles, which are wrapped in polystyrene bubble, cooled and shaped to form a uniform cross-section and closed-cell honeycomb sheet, followed by a leveler and a traction conveyor roller Then, the XPS extruded board of the predetermined size is obtained through the cutting system, and the latter is stacked and packed into the warehouse. The corner waste is recycled through the recycling granulator. Under normal circumstances, XPS extruded board plates have to undergo grooving, surface roughening or milling to meet different applications.