How to evaluate the cleanliness of products with a cleanroom wiper
Cleanliness refers to the degree to which the workpiece is clean during use. It can be expressed by the weight of the residual contaminants on the workpiece. It can also be expressed by the particle size and quantity of residual contaminants on the workpiece. It can also be expressed by residual metal atoms, ions and ionic contamination, or by using residual organic matter or organic carbon. The content is expressed. For mechanical parts that do relative motion, the problem that has the greatest impact on service life and reliability is particle contamination, and the size and number of particles, especially when the particle size is just the same as the fit of the mechanical motion pair. The impact and harm are greatest. Because too large particles do not enter the gap, too small particles can swim in the gap. Therefore, the early cleanliness was later evaluated by the gravimetric method and changed to the particle size method. In the International Standard (ISO), the cleanliness is also the particle size method. Among electronic products, the problem that has the greatest impact on reliability is residual ion pollution, which causes electrical leakage, electromigration, short circuit, electrochemical corrosion, changes in electrical properties, and changes in insulation resistance. Therefore, the degree of ionic contamination is commonly used to evaluate the cleanliness of electronic products.
The cleanroom wiper has less dust and less ion release, and the scrubbing effect is 10 times higher than that of the general scrubbing cloth. Long service life, super absorbent, no wear and tear on the surface. Four-sided laser edge sealing is used, which is different from general heat sealing and ultrasonic sealing. The amount of fiber dust is less than that of general heat sealing and ultrasonic sealing. In the precision instrumentation and measurement tool industry, the cleanroom wiper plays a big role. It can be used to clean and wipe the external dirt of precision products. When there is garbage on the measuring tool, it may not only cause the measured data to be inaccurate, but also cause the measuring tool to be damaged to varying degrees.
Our company is committed to the development of cleanroom wiper and dust-free brand. This product has been cleaned and dried by high-tech ultra-pure water, so it can be applied to 100-class cleanroom purification environment. The development of vacuuming, we pass the test under the microscope, the gap between the cleanroom wiper is electrostatically treated, and when the surface of the object is wiped by the cleanroom wiper, the dust on the surface of the object can be easily absorbed due to the dust-free and static electricity. In the cloth pattern, a good dusting effect is achieved; in addition, the cleanroom wiper has super abrasion resistance, so it can be used not only to remove stubborn stains, but also to be used repeatedly.
