Plywood QC Inspection Checklist : Part 22 Formaldehyde Release Volume and Release Standard of Plywood
With the arrival of the decoration season, we often hear such questions recently:
“Are odorless materials environmentally friendly?”
“The more colors the material has, the more harmful it is. What about colorless material?”
When you go to the decoration material market to select materials, you will always hear the salesman’s call:
“Handsome man, do you smell our board? It doesn’t smell at all. We are the board of the national standard E0!”
“Beauty, look, we all export to Japan, but they all meet the requirements of F****”
So the question is, what are they talking about? What is the national standard E2,E1,E0? What is Japanese F****,waht is EPA and CARB PHASE 1 AND PAHSE 2 E0 ? This issue will talk about formaldehyde emission standards of various countries in wood-based panels.
European wood-based panel formaldehyde emission standards set two mandatory standards, E1 and E2, while E0 is not a national standard, but an enterprise standard set by enterprises to improve product competitiveness.
The Formaldehyde Standards for Composite Wood Products Act of the United States is based on the relevant laws currently in force in California. CARB (California Air Resources Board) California Air Resources Board was established in 1967. Among the states in the United States, only California has this body. Other states follow CARB standards or federal standards, but are not allowed to set their own standards, and are now in phase 2.
Japan implements JAS A5908 & 5905, which is divided into three levels: F***, F*** and F****. Among them, F** sheet is used outdoors, F*** sheet can be used indoors in a small amount, and F** sheet is used indoors without restriction. Japan is currently the world’s most stringent formaldehyde control countries, the implementation of the most stringent standards.
China’s current national standards stipulate that formaldehyde emission from wood-based panels can be classified into E1 and E2 and E0 levels. The so-called E0 standard is a community standard issued by the Forest Industry Association, which is not mandatory.
The formaldehyde emission standards of so many countries are listed. It can be seen that each country has its own test methods and emission limits. In the absence of comparison, you may still not quite understand who is higher and who is lower, who is better and who is worse under the same standard. We have made a conversion table for you (from grade 1 to grade 4 gradually reduced), for your reference.
Above is our general classification of formaldehyde emission standards for wood-based panels in different countries. If we want to achieve the highest environmental protection grade – no formaldehyde addition, then the application of polyurethane adhesives for wood-based panels is indispensable.