20 details of plastic woven bag coating operation

20 details of plastic woven bag coating operation
 
　 　In the production process of plastic woven bags, the film coating process is relatively prone to leaks, so how can we ensure the safe production of coated plastic woven bags?
　　1, aim at the middle of the rubber roller as much as possible before winding the cloth.
　　2. Before the woven bag roll is fed into the car, apply silicone oil on both ends of the silicone roller.
　　3. When the cloth is connected and the cloth is lowered, the synchronous vehicle speed is reduced to less than 30m/min.
　　4. Nip the roller before connecting the cloth, and don't forget to stick the tape. After connecting the cloth, align the edge of the cloth with the photoelectric eye and lift the nip roller.
　　5. When new cloth is connected, the width of the cloth has changed. It is necessary to observe the cloth edge and adjust the die edge.
　　6. ​​The speed of the car is slightly slower before the cloth is connected; after the cloth is connected, before the double-layer joint enters the corona, turn off the corona machine.
　　7. After the double-layer joint enters the composite roller, raise the edge cutter and turn on the blower. After the joints, the edges are trimmed and closed.
　　 8. When the joint reaches the rewinding, change the reel in time.
　　 9. Drive to the front shift, and adjust the width of the trimming as soon as possible before finishing the cloth guiding and connecting the new cloth. Adjust the feeding, winding tension, preheating roller temperature, corona voltage, and coating speed ratio. After leading the cloth and then the new cloth.
　　10. The temperature of the cold roller is low, and the speed should not be higher than 35 m/min. Before driving, turn off the water inlet of the cooling roller, wait for the temperature on the surface of the cooling roller, and then open the cooling water valve. Control the surface temperature of the cooling roll (40-50 degrees Celsius).
11. Adjust the tension of unwinding and rewinding to avoid bell mouth in rewinding.
　　 12. When there is waste cloth, touch the bell twice to prompt. The rewinding is marked with a paper strip to remind the next process.
　　 Including inferior products and waste products such as missing coating, blistering, splitting of the diaphragm, and broken edges, they must be marked.
　　 13. If the flatness of the woven fabric is poor, when lotus leaves appear, adjust the broadcasting tension to a greater extent.
　　14. Before loading the cloth, confirm the length and shortness of the end surface of the cloth roll and the core iron tube; after loading the cloth, observe the position of the cloth roll and try to be close to the middle of the rubber roller. If there is too much deviation in the middle, it should be rolled back in time and turned around. To prevent the error correction stroke has been in place and can not be corrected.
　　 15. In the process of film coating, if you return the car for some reason, you must turn off the water valve of the corona, preheating and cooling roller in time. After entering the car, open them one by one.
　　16. The woven fabric has serious ruffles. Don't put it on the operating surface to correct the deviation. Increase the unwinding tension appropriately.
　　17. After the roll diameter of the cloth roll is reduced, (if it is manually geared) the tension must be broadcast.
　　18. When changing specifications, the surface of the rubber roller and pressure roller should be decontaminated first.
　　19. Before the coating material is poured into the mixing machine, clean the dust on the outer skin of the packaging bag. During the mixing process, the paint should be kept clean to prevent dust from entering the hopper.
　　 20. Oil the air source triplet regularly, and drip oil for the friction wheel and pneumatic track daily.