XPS extruded polystyrene foamed sheet production line uses polystyrene and foaming agent as raw materials, a kind of thermal insulation board extruded at high temperature. At present, the industry mainly uses HCFC as the foaming agent. Chlorohydrogen blowing agents have a greater potential for destroying the ozone layer, and the use of CFCs has been gradually restricted in accordance with the Montreal Treaty.
Based on market conditions, our company introduces excellent technology, tailors the development and development of CO2 extruded board equipment for customers. CO2 completely replaces HCFC foaming agent, and truly realizes the fluorine-free foaming process, creating a precedent for CO2 foaming. . According to the various needs of customers, multiple blowing agents can also be shared, one machine is multi-purpose, the whole process is automatically controlled by the central computer, and the production process is intelligent.
1. Multi-component mixing system
Fully automatic computer controls the ratio of various raw materials, adopts the accurate measurement method of weightlessness, and strictly mixes the raw materials according to the settings. In order to produce high-end quality products, the feeding system uses vacuum feeding to ensure the stable delivery of raw materials.
2. Extrusion system
The CO2 XPS extrusion system uses a parallel twin-screw extruder with a screw building block structure and is used in combination according to the processing technology of the material. Specially designed connection method, the transmission device enhances the strength of the threaded element and the mandrel, and achieves uniform dispersion of materials and good mixing.
3. Cooling and constant temperature system
The precise proportional control cooling system is equipped with a high-power chiller to ensure a good cooling effect and meet the stringent requirements of the cooling system in the production process.
4. Supercritical CO2 blowing agent injection system
The supercritical CO2 foaming agent injection system is a utility model patented product developed by our company. It adopts a fully imported flow control system to accurately control the instantaneous volume flow and mass flow of the foaming fluid. A closed-loop control program is designed to maintain the stability of the mass flow. . The unique three-stage pressurized injection system maintains a stable CO2 liquid state, ensures the formation of a homogeneous system, and uses an automatic flow feedback control system to maintain the stability of the blowing agent flow.
5. Extrusion die, sizing system
According to the rheological characteristics of PS physical foaming material at low temperature and high viscosity, the extrusion die adopts T-shaped large manifold, long fan-shaped regional head to build pressure extrusion, oil temperature control of the circulation system, and PID intelligent temperature control module to form a closed-loop control system , Can accurately control the mold temperature within the process requirements. The bidirectional electric adjustable device of the molding system, proportional control of low resistance system materials, double-sided shaping.
6. Fixed length cutting and conveying system
Online post-processing system, after cooling and forming products, automatic fixed-length cutting, trimming, vertical and horizontal edge forming, automatic stacking, multi-point monitoring, automatic alarm, automatic packaging system.
XPS CO2 foam board performance
◆ Flat and even surface, completely closed-cell internal honeycomb structure