How is the environmental standard of the plate defined?
Generally this is: 1.E2 grade refers to the formaldehyde content of less than or equal to 30mg / 100g 2.E1 grade refers to the formaldehyde content is less than dengyu89 mg / 100g (our standard) 3.E0 grade refers to the formaldehyde content of less than or equal to 5 mg / 100g. (European standard)
The country has not yet officially released on the E0 level of national standards, the current so-called E0 standard for the industry's most common convention.E0 means: less than or equal to 0.5 mg / l of formaldehyde emissionE1 refers to: less than or equal to 9.0mg / 100g formaldehyde emissionE2 means less than or equal to 30.0 mg / 100 g of formaldehyde emission
According to China's environmental standards, according to the concept of formaldehyde emission limit, the limit of formaldehyde in the plate is divided into three levels, namely E2 ≤ 5.0mg / L, E1 ≤ 1.5mg / L, E0 ≤ 0.5mg / L The Plate to meet the E2 level standard, that is, E2, E1 and E0 class plate can be called the green sheet, but because of consumer awareness of environmental protection, and now the market more common E1 or even E0 grade plate.
???? E0 standard is to allow formaldehyde in the plate, but can not exceed 0.5mg / L, which is the highest upper limit; the lower limit should be the highest content of wood aldehyde itself (wood self-aldehyde content is generally 0.12mg / L-0.04mg / L) That is the lower limit is 0.12mg / L.
??? "Zero formaldehyde" is the choice of non-formaldehyde, the production process does not produce aldehyde; on the environment of the production staff do not bring any pollution and injury. From this we can give "zero formaldehyde" plate so that the free aldehyde in the plate is less than or equal to the content of the wood itself (usually 0.04mg / L-0.12mg / L). "Zero formaldehyde" sheet and E0 is not the same thing, "zero formaldehyde" sheet principle that higher than the E0 level.
