Plastic woven bag drawing production operation
DATE：2021/10/12 8:33:54 / READ： / SOURCE：This station
Plastic woven bag drawing production operation
1. Operations before starting up
(1) Weigh or measure the raw and auxiliary materials needed for drying and stirring. For the raw materials mixed with recycled material particles, the recycled material particles are first added to the drying mixer for mixing and heating. The mixing temperature of the recycled material particles is controlled at about 80°C, and when the temperature reaches a fixed value, it will be released in the mixing box to dissipate heat. Then add the new material into the dry mixer and when the mixing temperature reaches 50°C, add the filling masterbatch to continue mixing, and the masterbatch turns into powder. If you need to add coloring pigments, add the required coloring pigments in time, mix for about min, and release them in the mixing box and mix them evenly with the recycled particles. If the raw material is powder mixed with recycled material particles, first heat the recycled material particles to about 70℃ and add the filling masterbatch to continue mixing. When the temperature is set, it is discharged and placed in the mixing box and the powder discharged later is stirred evenly for use. .
If the recycled material particles need to be added with paraffin, first heat the recycled material particles to about 70°C, then treat the paraffin into small pieces and continue stirring.
(2) Add the prepared resin into the hopper of the extruder
(3) Open the cooling water door of the water tank.
(4) When the extrusion temperature reaches the specified requirements, keep it at a constant temperature for 15 minutes
2. Boot steps
(1) Start the extruder motor for about 30 minutes and stop immediately, observe whether there is any abnormality, and repair it immediately if it is abnormal. Start the motor after the fault is eliminated.
(2) Start the electromagnetic speed regulating motor of the drafting machine and adjust the speed to the required position.
(3) Start all motors of the winding machine and adjust the required speed.
(4) After the molten material is extruded from the die, a 0.2m thick plug is used to clean the dirt in the die and the burnt material on the die lip.
(5) Pull the flat film out of the water tank and roll it on the film roller of the drafting machine, and wait for the flat film to be smooth and clean.
When there is no spot, the flat film is drawn through the slitting frame, the godet roller, the oven, the stretching godet roller, the Ⅱ oven, the shaping godet roller, and then the knife of the knife holder is used to cut the flat film into a silk blank. The above steps are processed to form the required flat wire, and then the wire is wound in order on the wire winding unit
3. Normal operation
(1) When the machine is running normally, adjust the speed of the extruder, stretcher, and winding machine according to the required thickness of the tape.
(2) Adjust the temperature of the two ovens.
(3) Adjust the tension of the winding wire, and adjust the 15A voltage regulator to 100～160V. From a distance, the flat wire is elastic between the stick drawing machine and the winding machine.
(4) Observe the thickness of the film at all times. Once the film is found to be gradually thinner, stop the machine and replace the filter immediately.
4. Steps to stop
(1) Lower the heating temperature controller of the machine, tee, and die head to about 20°C before shutting down.
(2) Reduce the screw speed to zero, turn off the extruder motor, and at the same time reduce the drafting speed to zero, turn off the drafter motor.
(3) Cut the flat wire. The closer the cut wire is to the winding machine, the better.
(4) Turn off all motors of the winding machine. 5) Turn off all heater power supplies.
Author：admin