What effect does glue have on multilayer board

What effect does glue have on multilayer board

2022-11-04
What effect does glue have on multilayer board
What effect does glue have on multilayer board

The production of wood-based panels cannot do without adhesives, and the environmental protection level of glue also directly affects the environmental protection level of finished panels. Take the multilayer board as an example, what are the results of different glues on the board?

The glue for wood-based panels has a history of thousands of years in China. From the original bone glue to the later urea formaldehyde glue, the adhesive strength has been continuously improved through generations of research, but the side effects are also increasing.

As far as the existing board adhesives on the market are concerned, different glues have completely different effects on the quality of wood-based panels.

First of all, the urea formaldehyde adhesive with the lowest price and the greatest pollution in the market. Its composition is formed by chemical reaction of formaldehyde and urea. In the beginning, the proportion of formaldehyde and urea is about 3:7 or lower. Low formaldehyde content causes less pollution to the environment, but the bonding strength of boards is not very strong. Therefore, some enterprises and businesses increase the proportion of formaldehyde and urea, increase the content of formaldehyde, enhance the bonding strength, and greatly reduce the environmental protection level of wood-based panels.

Take the multilayer board as an example. After using high-quality veneer and highly polluting urea formaldehyde adhesive for production, its environmental protection level cannot reach E1 level at all, that is to say, it cannot reach the current lowest level.

Not only the urea formaldehyde adhesive, but also the phenol formaldehyde adhesive and melamine adhesive, which are also called as the tri aldehyde adhesive together with urea formaldehyde adhesive, will reduce the environmental protection level of the board and become the pollution source of the indoor environment.

Therefore, in order to solve this problem, protein glue appeared in the market. Soybean protein glue is made of edible soybean powder, water and other substances through physical blending. It is free of formaldehyde, benzene and other harmful substances, and can neutralize part of the formaldehyde content of wood itself during production. Therefore, the environmental protection level of finished multilayer boards should be greatly improved. It can reach the NAF level of CARB certification, which is the highest level in the world. At present, it is known that Yimeikang formaldehyde free multilayer board is the most advanced in China.

As for other glues on the market, such as MDI, after using the production of multilayer boards, you can get the multilayer boards to reach the E0 level. The E0 level standard: formaldehyde emission is less than or equal to 0.5mg/L. According to scientific research, when the indoor E0 level is used too much, the indoor formaldehyde will exceed the standard.

Different glues have different effects on multilayer boards or other man-made boards. When using boards, merchants and home decoration friends can consult which adhesive is used for boards, so as to judge the environmental protection level of the boards, and also analyze whether formaldehyde will exceed the standard when used for indoor home life.

Do you want to use highly polluting boards to harm your family's health, or choose environment-friendly boards to purify indoor formaldehyde?