Why the wiper is not clean and there are water lines

The first is the question of quality
Bad quality wipers often do not have good heat resistance, so it is easy to cause the rubber to harden and rough under long-term exposure. Therefore, it is normal for the wiper to not clean and have water marks. At this time, we need to use it. Abrasive paper will smooth out the rough parts. The second is the impurities on the glass and wiper, as long as the impurities on the top are removed.
The windshield wiper can be said to be a very critical component of the vehicle. It is definitely inseparable from everyone in rainy days or when the visibility is low.
However, in some cases, it may be found that the wiper is not clean and has wavy patterns (fan-shaped marks), which may harm the vision of the traffic. So how to eliminate the fan-shaped marks after the wiper is scraped? Actually, there may be many influencing factors.

If the fan-shaped impression is discovered after applying the car glass water, it is likely that the car glass water has become mildew.
At this moment, you have to pay attention to whether there are deposits at the bottom of the car glass, and if so, you must change it immediately. Otherwise, not only will the wiper not be clean and wavy, but also the laminated glass of your car will be scratched. After all, the cleaning effect of car glass water is an immediate hazard to the visibility of the visual field, so it is very necessary to frequently disassemble and replace car glass water.
When the wiper wipes back, there are water marks. This is also a situation where the wiper is not clean. It should be handled as soon as possible. Otherwise, the outflowing water marks will endanger the driver's sight at the same time, and there is a certain safety hazard.
If the wiper is blurred and clear for 2 seconds after being scraped, it may also be caused by problems with the wiper or tempered glass. It should be investigated one by one to improve safety performance.
At the beginning, you can check whether the wiper blade is aging, hardened, or there are gaps, etc. These factors will cause the wiper to not clean the water. If that happens, be sure to replace the wiper blade with a new one. Generally, the operating time of the wiper blade is about 2 years or 40,000 kilometers.
If the quality of the wiper blade is poor, even a new one will encounter water marks, dirty scratches, and abnormal noise. Therefore, it is better to choose a wiper blade of very good quality.
Secondly, if there is an uneven bearing capacity, it will also cause the wiper to be unclean. The solution is to adjust the angle of the wiper arm.

There is also some sediment on the wiper
It will also promote the wiper's inability to completely remove the moisture. This kind of situation can be solved by eliminating the wiper. In addition to fully considering the condition of the wiper, it may also be due to the difficulties of the tempered glass industry. If oil slick is generated on the tempered glass, the wiper cannot remove the water because of the adhesion of this type of oil to water. Strong force. The solution to this situation is to use a glass cleaner to remove the slick oil.