ABS plate extrusion molding
DATE：2022/11/7 8:27:06 / READ： / SOURCE：This station
ABS plate extrusion molding
ABS is the abbreviation of acrylonitrile butadiene styrene copolymer resin. ABS board is a kind of product extruded from ABS resin. It is tough, hard and rigid; It has the characteristics of heat resistance and smooth surface, and is easy to conduct the second processing. Therefore, it is widely used in household appliances, electronics, packaging and other industries. Such as making (molding) refrigerators, washing machine linings, housing of household appliances and instruments, instrument panels, various file boxes and travel cases, etc.(1) The raw materials are selected from the special resin for ABS plate extrusion molding. For example, H-08, E-7 and E-3 resins of PetroChina Lanzhou Petrochemical Company; 767, HFA-451, ABS770, etc. of PetroChina Daqing Petrochemical Company.
(2) Equipment conditions The equipment for ABS sheet extrusion molding is basically the same as that for polyethylene sheet extrusion molding. However, raw materials need to be dried and dehumidified before ABS resin extrusion, so a dryer is required. (3) Forming process
① Before production, the resin shall be treated for 2~4h in a drying oven at 80~85 ℃. The resin after drying and dehumidification shall be put into production immediately, and shall not be stored in the air for a long time to prevent absorption of moisture in the air.
② Extrusion plasticization temperature of raw materials (from barrel feeding section to homogenizing section): 150~170 ℃, 160~180 ℃, 170~190 ℃.
③ Temperature of T-shaped mold: 180~190 ℃ in the middle, 195~210 ℃ at both ends
④ The temperature of the three rolls (according to the feeding method in Figure 6-3): about 100 ℃ for the lower roll, about 80 ℃ for the middle roll, and about 70 ℃ for the upper roll.
⑤ The quality requirements of plates are basically the same as those of other plastic plates.
① The resin is 2~4mm. Its application performance and moisture content. Like ordinary PVC board, it is corrosion resistant
② Original corrosion resistance, good temperature resistance, aging resistance and other characteristics. Because its production cost is lower than that of the corrugated plate production process shown in Figure 7-2 of 160, and its price is low, it is more suitable for 1-PVC plate to be introduced into the oven; 2. A resistance heater is used for temporary simple canopy, etc
④ 3 - Formed corrugated steel roll; 4 - Traction device (wave construction barrier material, which can prevent rain and cool the corrugated plate); 5 One plate preheating conveyor belt for wind protection.
⑤ Forming process: the preheating temperature of the plate is 125~135 ℃, and the heating time is determined by the thickness of the plate, which can be controlled within the range of 2~10min (the large value for thick plate and the small value for thin plate); The temperature of the arc forming surface of the convex and concave steel rollers of the die should be controlled within the range of 40~50 ℃; The high temperature plate of pressed corrugated plate shall be cooled and shaped for at least 10min. The finished product is cut off after curing.
Author：admin