If the recycled material particles need to be added with paraffin, first heat the recycled material particles to about 70 degrees, process the paraffin into small pieces and continue to stir. (2) Add the formulated resin to the extruder hopper. (3) Open the cooling water valve of the water tank. (4) After the extrusion temperature reaches the required requirements, the Sichuan woven bag is kept at a constant temperature for 15 minutes.
The process of making woven bags in Sichuan
1. Operation before starting (1) Weigh or measure the raw and auxiliary materials required for drying and stirring. Raw materials mixed with recycled woven bag particles are first added to the dry mixer for heating. The heating temperature of the recycled material particles is controlled at about 80 ° C. When the temperature reaches a fixed value, it is released in the mixing box to dissipate heat. When the new material is added to the drying mixer and the stirring temperature reaches 500 degrees, the filled master batch is added to continue stirring, and the master batch becomes powder. Need to add coloring pigments in a timely manner, add the required coloring pigments, stir for about 1 minute and release it in the mixing box to mix with the particles of the recycled material. If the raw material is powder mixed with recycled material particles, first heat the recycled material particles to about 70 degrees and add the filling master batch to continue stirring. When the temperature is fixed, play it out in the mixing box and mix the powder afterwards to be used. . If the recycled material particles need to be added with paraffin, first heat the recycled material particles to about 70 degrees, process the paraffin into small pieces and continue to stir. (2) Add the formulated resin to the extruder hopper. (3) Open the cooling water valve of the water tank. (4) After the extrusion temperature reaches the required requirements, the Sichuan woven bag is kept at a constant temperature for 15 minutes.
2. Start-up step (1) Start the extruder motor for about 30 seconds and stop immediately, observe if there is any abnormal phenomenon, and repair it immediately if abnormal. After the enemy obstacle is eliminated, start the motor to run. (2) Start the electromagnetic speed regulating motor of the drafting machine and adjust the speed to the required position. (3) Start all the motors of the winding machine and adjust the required speed. (4) After the molten material is extruded from the die mouth, use a 0.2 mm thick plug to clean the dirt in the die mouth and the coke on the die lip. (5) Pull the flat film out of the water tank and roll it on the film roll of the drafting machine. When the flat film is flat and spotless, pull the flat film through the slitting frame, the guide wire blank roller, the I oven, and the stretch guide. The silk roll, Ⅱ oven, the shaped guide roll, and the knife on the knife stand cut the flat film into silk blanks, which were processed by the above steps to form the required flat yarn, and then the Sichuan woven bag was wound on the winding unit in sequence.
3． Normal operation (1) When the machine is operating normally, adjust the speed of the extruder, drafter and wire winding machine according to the required thickness of the flat wire. (2) Adjust the temperature of the two ovens. (3) Adjust the tension of the winding wire. The 15A voltage regulator is adjusted to 100 ~ 160V. From a distance, the flat wire has elasticity between the drafting machine and the winding machine. (4) Observe the thickness of the film at all times. Once the film is gradually thinned, immediately stop the machine and replace the filter. 4． Stop step (1) Before stopping, lower the heating temperature controllers of the barrel, tee and die head by about 20 degrees Celsius. (2) Reduce the screw speed to zero, turn off the extruder motor, and reduce the draft speed to zero, and turn off the draft motor. (3) Cut the flat wire. The closer the wire is to the winding machine, the better. (4) Turn off all motors of the winding machine. (5) Turn off all heaters in Sichuan woven bags.