Continuous plate polyurethane plate

Composite sheet continuous production line, can greatly improve production efficiency. Horizontal composite continuous molding process: foaming machine after mixing the raw material, moving at a constant speed to the foam on the surface of material, at the same time, the level of material close to the plastic foam, generated on both sides to take up and down surface of composite material plate. As the material of surface material most mainly aluminum foil, metal materials. In the process of foaming transmission, bubble maturation in the double pressure panel, according to the required length cutting, can produce the required specifications of the plate. Sandwich board can be by changing the thickness of the molding machine, the distance between the metal plate under the conveyor belt and the thickness of the side seal block to adjust. Thickness adjustable range of 20 ~ 250 mm, the conveyor belt speed can be in 1. Between 0 ~ 25 m/min stepless adjustment according to need, plate width can be according to the need to adjust between 600 ~ 1200 mm. Continuous composite sheet molding production, reaction material must be evenly distributed. Mixing head simply pouring material, back and forth in the plate width is about 1. 25 m, production speed is generally limited to 9 ~ 10 m/min. Higher speed, the mixing head move the reversing, reaction material on the edge of the plate is easy too much. In addition, the return rate is too high, not too safe operation. If use two or more joint injection mixing head, can reduce the pouring amount each mixing head, but does not move back and forth mixing head, fixed in the center, is expected to connect a pressure roller or other ingredients evenly device can make the material quickly distribution. High-speed continuous composite molding production process of temperature with a foam reaction speed is very sensitive, especially poly melamine urea acid ester foam system. Should be adopted to decrease sensitivity, high viscosity specifications of the polymeric MDI. At present, our country has polyurethane sheet continuous production line more than about 50. Due to the current market demand and other factors, most of the continuous plate production line not running at full capacity. Along with the market demand and technology updates, in the near future continuous plate into the mainstream mode of production.