SOLUTION
Chemistry/Materials
LCD polarizing plate manufacturing plant reduces foreign matter defects by 72%
Example at a highly-functional film manufacturing plant
| At a factory manufacturing polarizers for liquid crystal displays (LCDs), foreign material adhesion to the product was a serious problem. During the blanking process, products are strongly charged with static electricity when punched. And the shavings produced during the punching process are also naturally charged with static electricity. Therefore, during the punching process, a large amount of punching debris and floating foreign matter were attracted to the product and adhered to it. This resulted in many foreign matter defects, and countermeasures were urgently needed. |
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In order to prevent this problem, it was necessary to instantaneously remove the strong static electricity generated in the blanking process, while simultaneously removing the static electricity from the scattered punching debris and floating foreign matter. In addition to installing BAR TRINCs near the punching area, a PHASED ARRAY IONIZERs were installed to make the entire blanking process an ionic space. As a result, static electricity was removed from the product, punching waste, and environmental foreign matter, resulting in a dramatic reduction in foreign matter adhesion and a 72% reduction in foreign matter defects in the entire process.
