Recently, 28 provinces and municipalities such as Tianjin, Beijing, Hebei and other consumer associations (CC, Consumer Protection Committee) and China Indoor Decoration Association Green Home Environmental Technology Working Committee, carried out a comparative test of environmental performance of flooring and sheet, and released Comparative test report on environmental performance of floor and board. According to the "Report", the floor and board which are called "aldehyde-free" on the market, because the wood itself contains trace amounts of formaldehyde, does not mean that formaldehyde is not present in the product.
It is understood that the organizers of this event collected 35 mainstream brand samples in the market through anonymous purchase, and sent them to the national authoritative testing organization - National Furniture and Indoor Environmental Quality Supervision and Inspection Center for testing. The results showed that the formaldehyde emission rate of 35 samples was 97.14%, and the environmental protection status of the floor and board was higher. The green environmental performance of the branded flooring and sheet products was trustworthy.
Although the compliance rate is very high, the achievement of a single sample does not mean that the home is environmentally friendly. Overlaying too much decorative material may still cause harm. In addition, the floor and sheet which are called "aldehyde-free" on the market, because the wood itself contains trace amounts of formaldehyde, only the use of adhesive without formaldehyde, does not mean that formaldehyde is not present in the product.
It is understood that raw materials such as wood or non-wood fiber will also release formaldehyde. The current data show that the formaldehyde emission of wood is about 0.2 mg/L. The green sheet produced by formaldehyde-free adhesive means that the adhesive used in the manufacturing process of the artificial board is an aldehyde-free adhesive, and the release amount of free formaldehyde in the artificial board is not higher than the formaldehyde emission of the wood or non-wood fiber raw material used. Therefore, in order to distinguish whether the sheet product is a green sheet using an aldehyde-free adhesive, it is one of the key factors to see which adhesive is used.
From the results of this comparative test, although the five formaldehyde-free rubber sheets were all measured with trace amounts of formaldehyde, the formaldehyde emission values ​​were very low, which also indicated that the "aldehyde-free" sheet was not free of formaldehyde, but only its formaldehyde. From the wood itself, not from the adhesive, its environmental performance may be better.
The test results show that in addition to the low value of the non-aldehyde rubber sheet, 12 of the 13 solid wood composite flooring can meet the E0 standard, far better than the current national standards. However, the market research of this event shows that the plate market is full of E1 and E2 products, which has a certain relationship with the national standard to a certain extent.
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