There are three kinds of man-made boards, plywood, fiberboard and particleboard, referred to as artificial three boards.
1, plywood
The blockboard and multi-layer solid board we often see should belong to this category, and their characteristics are also closest to natural wood. Blockboard, also known as large core board, is a kind of artificial board which is made of corner waste produced in wood processing through shaping, planing, gluing, splicing and veneering. Widely used in partition, priming, grass-roots treatment, etc. Multi-layer solid wood board is made of various log boards by pressing, drying and trimming with adhesive, generally 3- 13 layers, which are called three-layer board, five-layer board and nine-layer board respectively. This kind of plate is mostly used in some cabinets, drawers and bed rows. However, due to the large amount of urea-formaldehyde glue used in the production of such plates, the formaldehyde emission is generally high, and the environmental protection performance cannot be guaranteed. .
2. Fiberboard
Fiberboard, also known as density board, is the most common board with formaldehyde pollution in formaldehyde treatment industry. When making, the broken wood or plant fiber is mechanically separated and chemically treated, mixed with adhesive and waterproof agent, and then molded at high temperature and high pressure, which is an ideal artificial board for making furniture. According to different densities, it can be divided into high density board, medium density board and low density board, among which medium density board fiberboard is the most common, referred to as MDF. Dense density board furniture mostly adopts baking paint, paint facing technology, and also uses thin wood floor as the base material. Most family coffee tables, TV cabinets and some beautiful furniture are made of MDF.
3. Core plate
Particleboard is also called particleboard. The common particleboard is oriented particleboard, particleboard, melamine board, ecological board and so on. Particleboard is an artificial board made of various branches and buds, small diameter wood, fast-growing wood and sawdust. , cut into pieces with certain specifications, dried, and mixed with rubber, hardener, waterproof agent, etc. And pressing at a certain temperature and pressure. Its environmental protection performance is closely related to the quality of adhesive used in manufacturing. In the custom-made furniture market, it is widely used, and some people who pursue special design effects will also use it. The environmental protection performance of high-quality particleboard furniture is still relatively high.
Generally speaking, the decoration materials and furniture using wood-based panels will release formaldehyde, because in the production process of wood-based panels, besides a lot of sawdust, an adhesive is needed, and this adhesive is mainly made of urea-formaldehyde resin, which is actually composed of formaldehyde and urea, so it is not surprising that wood-based panels release formaldehyde. Therefore, if conditions permit, the new house decoration should use solid wood materials. If a large number of wood-based panels are used indoors, the problem of formaldehyde is inevitable. At this time, in addition to formaldehyde Company needs to deal with the formaldehyde contained in the decoration materials!