PC board is a very ecological and environmental protection plate in recent years, and it is very popular. Then if you have a deep understanding of this industry, you will find that the shelf life of the PC board is divided into 3, 5, ten years three shelf life plates, in which there is even a non-shelf life.

So what causes the shelf life of the PC board to be like that? Why is the shelf life of PC board divided into a variety of it? Is the manufacturer lying or not paying?

The reason for the start of the management decision of the length of the service life of the PC board is the production and processing raw materials: the PC board with a 10-year shelf life uses a new upgrade and upgrade material, while the five-year and three-year plates are not the same level of recycled materials for secondary applications. There are usually recycled materials, the first is to better be able to better protect the ecological environment, the second is to better be able to better customers, reduce waste, save costs.

Secondly, the thickness of the plate and the gram weight of the plate: if the thickness of the plate is too thin, the professional ability of the PC board will be reduced because of the tensile strength (the forced pressure given by the external geographical environment), and the anti-aging professional ability will be reduced even if the maintenance of the UV coating itself; Gram weight (net weight per square meter of PC board) It is likely that some people want to ask since the common raw materials are the same, so why the difference in gram weight, this is easy to grasp, because the pc endurance plate is hollow, the thickness of its single and double sides and the thickness of the corrugated ribs are related to the consumption of PC raw materials, naturally there will be gram weight determination error, combined with the above application period will be hurt.

A very important reason for UV coating: on the upper surface of the PC board, there must be a 50μm UV layer to block UV damage, so as to ensure the expected effect of anti-aging for ten years, and the PC board without UV layer maintenance will experience a certain level of yellow aging damage transmittance and application period after 2 years of direct natural light.

PS: For the PC board with no shelf life, all the above three reasons are occupied, especially in the material and thickness, gram weight, and UV coating of the board.