Due to the variety of indoor units, consumers like to choose customized furniture, which is more suitable for the house structure. The customized furniture is mainly divided into two categories: one is the bare board furniture made of joint board (tooth joint board), blockboard (big core board) and plywood (multi-layer board and solid wood multi-layer board); the other is panel furniture made of blockboard or plywood (commonly referred to as "paint free board" or "ecological board") with veneered veneer.
Bare board furniture
Case 1: the interior of furniture without any treatment is the source of long-term formaldehyde pollution
The exterior surface of the furniture has been treated with decorative panels or sprayed with paint, and the interior of the furniture is not treated. It is the exposed surface of plain board such as Blockboard and plywood. Formaldehyde volatilization is not obstructed, which is the biggest long-term formaldehyde pollution emission source. The bed box and locker are shown in the picture.
Formaldehyde removal from bed board
Case 2: PVC facing material is pasted on the inner side, and the pollution source shall be confirmed by testing
Some furniture interior decoration pasted with PVC decorative paper, but because of the poor sealing effect of PVC, the free formaldehyde in wood-based panel can still volatilize.
Whether the PVC facing material is still the source of formaldehyde pollution needs to be tested. The indoor temperature is above 23 ℃, and the detection result in furniture is more than 0.4-0.6 mg, which is undoubtedly a long-term formaldehyde pollution source.
Note: it is often mistaken for solid wood panel without formaldehyde pollution, but in fact it is wood-based panel with relatively less formaldehyde pollution. The amount of glue used in finger joint board is less than that of blockboard, and its formaldehyde emission is close to half of that of blockboard.
Panel furniture made of lacquer free board
The furniture made of paint free board and PVC decorative furniture need to be tested to verify whether it is the source of formaldehyde pollution.
In addition, the paint free board can be divided into "single facing" (only one side is pasted with veneer, the other side is not pasted, plywood or wood board is directly exposed) and "double facing". If it is a single finish, it is better to use strong formaldehyde remover to treat the side without finish during decoration.