Since formaldehyde-based adhesives are generally used in the production of blockboard, the finished product will release free formaldehyde more or less. When the free formaldehyde content exceeds a certain limit, it will affect human health. The detection of the amount of formaldehyde released from the blockboard is a complicated process, and the formaldehyde emission of the blockboard is simply and preliminary determined by the following method. First, the unused blockboards are stacked in a small house, the doors and windows are closed, and they are stored in the room for a period of time. If there is no pungent nose smell, it means that the formaldehyde emission of the blockboard is small, and the use will not affect the human health; if the smell is large or there is a feeling of tearing, it means that the formaldehyde emission of the blockboard may be higher.
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