Many homeowners who love to give DIY will often do their own wooden modeling to improve the specific needs of some local space. The boards used in home improvement are often based on large core boards. How to choose a good board is the first step for DIY! Better to follow the reporter to the market and use saws and noses to measure it, and my heart will come to an end. 1. Shihuan certification is a green certification authorized by the State Environmental Protection Administration. Consumers generally look for Tencent Peugeot when purchasing large core boards and floor and floor accessories to ensure maximum product quality and avoid unnecessary losses in the future. 2. The owner can ask the merchant to take out a board at the scene, saw off its corners and smell it with his nose. If there is a noticeable odor, its environmental protection cannot be guaranteed naturally. 3. The proportion of wood strips on the side of the good board is relatively uniform, while the ratio of the side combos on the board of the lower quality board is larger and there is no rule. 4. If convenient, saw a corner with a saw, and then peel off its wood surface, look at the small wooden splicing inside, should not use wood with bark, hole and dead knot. With good quality core boards, the connection between the wood bars will be very dense. 5. The specification of the large core board is generally 1220mm×2440mm, and the thickness is generally 15mm and 18mm. Daxin board, also known as blockboard, is one of the main materials commonly used in decoration. Because in the middle is a core made of natural wood splicing, each side is affixed with a layer of wood skin, so it is called a big core board. Daxin board is mainly used for the production of furniture, doors and door covers, heating boxes, curtain covers and other indoor wooden work, its waterproof and moisture-proof performance is better than particleboard and medium density board. Environmental protection first In home renovation, the large number of applications of sheet metal is one of the main sources of indoor pollution. This is because the process of sheet metal processing often contains harmful substances such as formaldehyde. Therefore, the owner must select the environmental protection level when purchasing the sheet. The state has an explicit regulation on the amount of formaldehyde released from the sheet: the amount of formaldehyde released from the building materials directly used in the room must be less than or equal to 1.5 milligrams per liter, that is to say E1 level; if the amount of formaldehyde released is less than or equal to 5 milligrams per liter, also The E2 sheet must be treated with a veneer before it can be used indoors. Formaldehyde emissions exceeding 5 mg per liter are substandard. If the owner needs to use a large number of plates, the higher the environmental rating, the better, because in the fixed space, the formaldehyde content will accumulate as the use of plates increases. Misunderstandings: smell smell angle judge plate quality According to Li Ke, a sales manager for sheet materials, some owners will let the owners smell the corners of the board when they buy the board. If the smell is pungent, it indicates that the product quality is inferior. In fact, this method seems to be simple to operate and has some truth. However, there is no substantive difference in the identification of plates that have been transported and stored long distances. Because in the process of production to sales, the time is enough for the plate to dispel the smell of the surface. Buying Tips: Cut corners, smell, see test report Manager Li suggested that the owner can purchase the board by combining the inspection report with the on-site trimming angle. The authoritative test report will clearly show the content of formaldehyde in the board. In addition, the owner can also ask the merchant to take out a board at the scene, cut off the corners, and smell the smell. If there is a noticeable odor, its environmental protection cannot be guaranteed naturally. Structure needs to be seen When purchasing the blockboard, the owner can simply judge from the appearance whether the sheet is smooth and smooth, and whether the surface has warping, deformation, blistering, unevenness, etc., and there is no obvious color difference. Wei Wenhua, general manager of the brand plate, emphasized that the owner should pay attention to the inspection of the core structure in addition to the environmental performance and surface flatness of the sheet. Here to remind the owners that some inferior panels sometimes use paint to paint all around them, so that owners can not see from the appearance. If there is a phenomenon of glue filling and putty filling around it, it may indicate that there are gaps or hollows inside. Buying Tips: Board core should be well-proportioned In addition to looking at the wood surface of the blockboard, it is also important to observe its structure. The proportion of wood strips on the side of the good board core is relatively uniform, while the ratio of the side combination wood strips of the board with the lower quality is different, and there is no rule. At the corner of the saw, the owner can also peel off the wood surface and look at the structure of the inner wooden core. The spliced ​​small pieces of wood cannot use wood with bark, holes and dead knots. With good quality core boards, the connection between the wood bars will be very dense. Price is the ruler There are many brands of blockboards in the market, but the price difference is not great. The specifications of large core boards are generally 1220mm×2440mm, and are sold on the market. Generally familiar brand big core board price is mainly concentrated in each 100 ~ 130 yuan, the general price level is also 80 yuan, but for the price below 70 yuan Daxinban industry insiders to remind consumers to buy carefully. The thickness of the large core board is four kinds of 12mm, 15mm, 18mm, 20mm, but 15mm and 18mm are more commonly used thickness, different thickness will also lead to different prices. Tips: A. When some owners choose large core boards, they mainly look at weight and price, but they are not. The heavier the big core board, the worse the quality. The larger the weight, the more it shows that the board is made of miscellaneous wood, and the big board made of wood is not nailed to the nail and cannot be used. B. It is best to add the words “must meet the national standards†to the purchase contract or invoice, and it is best to leave a sample in the construction. Once the project is completed, it is found that the indoor environment pollution caused by Daxin board quality problems can be As the basis for judgment responsibility. Plate purchase formaldehyde interior decoration door price space heating