What should I do if the non-woven fabric produced has no strength?
I just dismantled the die head and installed it, and it will not work. The non-woven fabric has no strength. It is inclined when blowing, and it always blows to the left.
First of all , why should it be dismantled after a week of operation? The reason is that the hole may be blocked. This may be one of the most common problems with meltblown production lines. There are several reasons:
1: The material has large ash content and impurities
2: The spinneret hole is not smooth enough
3: The material is unstable
4: No filter is added
5: The barrel is not cleaned up
The melt blown material cannot be evaluated only by the melt index (data representing only one point) and ash content , In fact, it is very important to look at the pressure rise (rheology). This imported meltblown line has a real-time online display of the head pressure. It is necessary to observe the pressure fluctuation curve to judge the stability of the melt index of the raw material and the level of impurity control. The online detection and real-time display of melt pressure are very important, just like the eyes of an old master. When the fluctuation is controlled within the allowable range, there will be a uniform and soft high-quality fabric.
Secondly, the wind blows diagonally, the cloth is too hard, the left and right sides are divided, one side is wide and the other is narrow, the die head is not standard, the quality of the die head is poor, it needs to be corrected, the cloth is hard and has no strength, and the wind force is not enough, The air duct should be adjusted. The spinneret is basically not all right the first time. After observing what is wrong, adjust the bolts next to the spinneret and try again. If the spinneret is not adjusted properly, turn off the machine and remove the spinneret. After re-adjustment, install it again. Spinning. Ask the master or find a spinneret manufacturer or a meltblown line manufacturer for advice on re-adjusting the spinneret. The spinneret is deformed, and now the die head is not heat-treated in order to catch up with the schedule. It will deform when burned. Try to install a filter before the non-woven fabric manufacturer leaves the machine. It is best to do double filtration. After all, the core of this machine is the spinneret.
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