Several Problems Needing Attention in Textile Coating

 First, pay attention to every head must be clear on the number of cylinders, so that in the coating test can be stacked separately according to the cylinder number, it can also make the garment factory in the open when cutting according to the cylinder number separately, so that Avoid the different color of the cloth on the same clothes and the color difference.

Second, when sewing head should pay attention to the two heads to tear together and then can be sewn up, if the tear is not uniform, it will cause the weft.

Third, when the machine coating should pay attention to a few issues:

1, the tension adjustment: coating according to different fabrics to adjust the different tension, uneven tension will cause uneven coating, and some places are thick and thin places, and feel will be uneven, there are The place where the hard place is soft.

2, coating knife adjustment: coating according to different coating requirements to adjust different coating knife, one is the thickness of the knife, according to different requirements of the coating to choose different thickness of the knife, choose the wrong knife will not guarantee The quality of the coating does not reach the optimum coating effect. The other is to adjust the clearance of the knife edge. The gap between the two edges of the stencil should be the same. Otherwise it will cause uneven coating, and even some products will cause the fabric of the left and right color, such as white or color.

3, the cleanliness of the cloth: the actual cleaning of the cloth when coating, because if the coated surface of the cable head or fine sand, then these small things will be stuck in the knife edge, it will cause the coating There are slivers at the level, causing defective products. Therefore, in front of the painting knife, the cloth is generally cleaned. The general solution is to put a brush on the front of the coating knife, brush the threads on the surface of the cloth and the fine sand, and sprinkle some water on the ground to keep the air humidity, so that the dust on the ground will not fly, and reduce. Adsorption of small static electricity. If you get stuck on the knife edge, the operator must scrape it off as quickly as possible.

4, drying room temperature control: different requirements of the coating, curing temperature is not the same. So control the temperature of the coating. Too high a temperature will result in a hard feeling and foaming. If the temperature is too low, it will cause sticky, poor fastness, and easy to fall off. Strictly speaking, the temperature of the drying room should be from low to high, usually three-stage drying room from low to high. The temperature in the first stage should not be too high to just control the boiling point of the solvent in the glue solution. This will completely volatilize the solvent in the glue solution. If the temperature is too high, the solvent will start to solidify before the volatilization occurs. The remaining solvent in the second-stage drying room will destroy the surface film and cause blistering, which will also cause the quality of the coating to decrease. For example, if the coating is to be water pressure, the surface of the coating film will destroy the water pressure. The third oven temperature should be controlled at the curing temperature of the coating adhesive. If the temperature is low, the coating glue will not completely cure and will become sticky, which will seriously affect the fastness. Higher temperatures will also result in harder, brittle feel. Destruction of the physical properties of the coating adhesive.

5. Control of coating speed: As with the above temperature, the temperature and speed of the coating must be strictly controlled. It will directly affect the quality of the coating. Because the curing of the coating glue depends on two conditions, temperature and time. Although the temperature control is good, if the time is not controlled, it will still affect the quality of the coating. Because both conditions are indispensable. So control the temperature while also controlling the speed. The speed is too fast, the curing time is not enough, it still can not be completely cured, it will also cause sticky and fall off. The speed is too slow, too long in the drying room, it will also cause the feel to become hard and brittle. Moreover, production efficiency is low and energy is wasted.

6, inspection and packaging should be strictly in accordance with customer requirements to test, and make a mark. And stacked by the cylinder number. Obvious signs must not be confused.

Flame-retardant fabrics in the prevention of fire has a good protective effect, fire-retardant overalls can effectively reduce the fire and sputter metal droplets on the human body injury - YuLong Safety