The 4H Hardness Screen Protector is Misleading to Consumers

Mobile phone screen protector and other screen protectors' material from the original OPP and PE material develop into PET material. The most extensive materials are: PET single screen protector, PET double screen protector, PET POLY acrylic rubber screen protector, PET silicone screen protector, PET prevent scratches screen protector.

Because now electronic products are mainly for the touch screen and the PET prevent scratches screen protectors have the biggest demand on the market at present. So scratch resistant performance of PET prevents scratches screen protector is the most concerned by customers.

A good quality film must have: the high transparency, good cleanliness and flatness, membrane surface is without rainbow grain and crystal point, good automatic adsorption, good exhaust and scratch resistant property. Scratch resistant sexual is usually important. When customers require us this product, they often asked about the hardness. Has it reached more than 4 h? In fact, the hardness has much relationship with the rainbow grain of the film surface.

The so-called rainbow grain is that the screen protector after high temperature hardening treatment, the base material surface molecular structure uneven distribution produces rainbow grain. The existence of rainbow grain affects light transmittance and visual. So the high intensity hardening, the more obvious rainbow grain will be. In the production process, in order to control rainbow lines better and in the promise to have no affect on the visual effect, reaching the highest hardening treatment effect will only under 3.8 H in general. If it is more than the value, rainbow grain will be difficult to control.

Finding out the relationship between Rainbow grain and scratch resistant hardness, it will give the hint to customers to buy the materials. Prevent scratches screen protector's hardness is up to 4 h which is actually misleading to consumers.