During the operation of the setting machine, the main technological processes include: rolling car, upper overfeeding, lower overfeeding, main chain, brush, cloth discharging and dropping, etc.
Finishing Production to reduce stretch marks
In fact, in simple terms, the main process of the stenter setting machine can be divided into two processes: stenter and setting, specifically:
First of all, the main process of the setting machine, the so-called tenter process, actually mainly refers to applying a certain pulling force to the weft direction of the fabric, so as to remove the selvedge produced by the force during the pre-processing and dyeing process. Disadvantages such as unevenness, skewed weft and uneven width. In other words, after this process, the surface quality of the fabric will be significantly improved.
The second is the shaping process. Specifically speaking, it is to first set a suitable tension for the tenter shaping machine, and then Treat the fabric. First, it is heated to a certain temperature and then maintained for a certain period of time. In this way, the fiber molecular chains are readjusted in their new positions. Then, it is cooled at an appropriate speed to fix the thermal changes of the fabric.
In general, after the setting process of the tenter setting machine, the wrinkles contained on the fabric can be removed, and at the same time, new wrinkles can be prevented from appearing. In other words, after treatment, the surface quality of the fabric can be significantly improved, making it look more beautiful.
For some fabrics, it is often necessary to use tenter and setting machine equipment for pre-shaping treatment before dyeing and printing. The advantage of this is that it can reduce undesirable phenomena such as pull marks. For example, when processing stretch fabric, because it contains relatively high spandex, the shrinkage of spandex and silk are inconsistent, and the silk is harder than other raw materials. If a tenter setting machine is not used for pre-shaping, marks are likely to appear during the later printing and dyeing process. wait.
In addition, there are many finished products that also require stenter equipment for shaping. For example, for nylon gray fabric, during this process, the setting temperature should be maintained between 160°C and 180°C, and the setting speed should be controlled between 20 meters and 25 meters per minute.
At the same time, the setting temperature of the stenter setting machine must be reasonably controlled. This is because the setting temperature changes greatly in color, especially purple, pink blue, etc. Therefore, it is necessary to pay attention to whether the color before and after treatment is the same. In addition, it should be noted that the thickness of nylon fabrics is different, so the shrinkage rate is also different. Nylon fabrics are prone to yarn snagging when setting. If there is a line of yarn snagging all the way through the setting, the machine should be stopped immediately and the machine head and tail, bellows, and rollers should be inspected and polished with sandpaper or padded cloth.
In addition, in the process of using stenter setting machine equipment to shape polyester fabrics, the setting temperature is generally controlled between 170°C and 200°C, and the setting speed is 20 meters to 28 meters per minute. .
It should be noted that in the process of shaping polyester poppy fabric, the shaping temperature of the stenter shaping machine must be reasonably controlled. At the same time, the thickness of the middle and edge of the cloth and the slow speed of the machine must also be taken into consideration. It is pulled in two times. This is because setting it twice can reduce the thickness difference between the middle and the edges.
Finalized production running edge control
We know that once the tenter If the setting machine runs out of control, the consequences are often very serious. Therefore, after finding out the specific cause, we must deal with it immediately to avoid more serious consequences. So, how to control it? First of all, when we operate the stenter setting machine, we should pay attention to the operating status of the equipment.
During the operation of the stenter setting machine, the stacking status of the cloth waiting to be processed should also be checked and adjusted in advance to ensure that the stacking is adjusted. In this way, during the cloth feeding process, it can also be ensured its stability.
Secondly, the staff should also appropriately adjust the distance between the door width and the edge suction device based on the actual processing conditions, and also adjust its pressure appropriately.
Third point, when inspecting fabrics, defective fabrics should be picked out in advance to prevent edge running due to bad edges.
Fourth, we also need to set up a baffle or ruler wheel on the crossbar at the cloth inlet end of the stenter setting machine, which can reduce the lateral changes in the cloth surface and also prevent it from swinging left and right. , thus avoiding edge running.
Fifth, staff should operate the stenter setting machine correctly and try to ensure its stable operation. In addition, the tension of the machine needs to be appropriately adjusted according to the tightness of the fabric structure. Remember, do not use too much tension, otherwise bad edges or running edges will occur. If the equipment is also equipped with an overfeeding device, attention should be paid to controlling the overfeeding to avoid needle detachment and overshooting.
Finally, the tenter is finalized.During operation, we also need to pay attention to the surrounding environmental conditions. For example, a larger screen can be used to solve the problem of interference from sudden winds. At the same time, equipment should be inspected and maintained regularly, and damaged parts should be replaced in a timely manner. </p
