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What to do if the produced non-woven fabric has no strength
by：Sunshine
2021-04-05
I just dismantled the die head and installed it. The non-woven fabric has no strength. It is slanted when blowing, and always blows to the left.
Answer:
First of all, why does it need to 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 in melt blown production lines. There are several reasons:
1: The material has large ash content and impurities
2: Spinning hole, not smooth enough
3: The material is unstable
4: No filter added
5: The barrel is not cleaned up
When evaluating melt blown materials, you can’t just look at the melt index (data that only represents one point) and ash. In fact, it’s very important to look at the pressure rise (rheology). This imported melt blown line has real-time display of head pressure. Observe the pressure fluctuation curve to determine the stability of the raw material melt index and the level of impurity control. Online detection and real-time display of melting pressure are very important, just like the eyes of an old master. Only when the fluctuation is controlled within the allowable range will there be a uniform and soft high-quality fabric.
Secondly, the wind blows obliquely, the cloth is too hard, the left and right sides are divided into blades, one side is wide and the other is narrow, the die is not standard, and the quality of the die is poor. It needs to be corrected. Great. The spinneret is not completely correct the first time the spinneret is sprayed. After observing what is wrong, adjust the bolts next to the spinneret and try again. If the power is not adjusted properly, shut down the spinneret and remove the spinneret. After re-adjustment, install it again. Spinneret. Ask the master or find a spinneret manufacturer or melt blown line manufacturer to re-adjust the spinneret. The spinneret is deformed. Now the die head is not heat-treated in order to keep up with the progress. It will be deformed after burning. Try to let the non-woven fabric manufacturer install the filter before the machine comes out. It is best to do double filtration is the safest, after all, the core of this machine is the spinneret.
Answer:
First of all, why does it need to 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 in melt blown production lines. There are several reasons:
1: The material has large ash content and impurities
2: Spinning hole, not smooth enough
3: The material is unstable
4: No filter added
5: The barrel is not cleaned up
When evaluating melt blown materials, you can’t just look at the melt index (data that only represents one point) and ash. In fact, it’s very important to look at the pressure rise (rheology). This imported melt blown line has real-time display of head pressure. Observe the pressure fluctuation curve to determine the stability of the raw material melt index and the level of impurity control. Online detection and real-time display of melting pressure are very important, just like the eyes of an old master. Only when the fluctuation is controlled within the allowable range will there be a uniform and soft high-quality fabric.
Secondly, the wind blows obliquely, the cloth is too hard, the left and right sides are divided into blades, one side is wide and the other is narrow, the die is not standard, and the quality of the die is poor. It needs to be corrected. Great. The spinneret is not completely correct the first time the spinneret is sprayed. After observing what is wrong, adjust the bolts next to the spinneret and try again. If the power is not adjusted properly, shut down the spinneret and remove the spinneret. After re-adjustment, install it again. Spinneret. Ask the master or find a spinneret manufacturer or melt blown line manufacturer to re-adjust the spinneret. The spinneret is deformed. Now the die head is not heat-treated in order to keep up with the progress. It will be deformed after burning. Try to let the non-woven fabric manufacturer install the filter before the machine comes out. It is best to do double filtration is the safest, after all, the core of this machine is the spinneret.
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