What Is treated timber blackboard sheets?
Blockboard sheets, known as large core board, wood core board, wood board, made of two pieces of veneer in the middle of the glue. The total thickness of the double-sided adhesive veneers of the blockboard will not be less than 3 mm. The corner defects of all kinds of blockboard must not exceed 5mm in the nominal width and will not exceed 20mm in length. The middle wooden board made of
high-quality natural wood board after heat treatment (ie drying in
the drying room), and processed into a certain specification of wooden strips, which made up of a splicing machine. The spliced
wooden boards covered with two layers of high-quality veneers on both sides, and then pressed by cold and hot press.
What are the specifications of wood used blockboard sheet material?
The size of blockboard is 2400X1200X1.7, most of which are 1.7 thick and 1.5, but few people use it. Commonly used blockboard thickness is 17mm, there are also: 12mm, 15mm, 17mm, 20mm four, 15mm and 17mm are the more common thickness, the thickness will not lead to different prices.
What is the classification of water resistant blockboard veneer sheets?
1, According to the core structure
Solid Blockboard: Blockboard made of solid core.
Hollow blockboard: Blockboard made of checkered core.
2, According to the core of the board
Glue board core blockboard: Adhesively bond the core strips into a blockboard made of core.Non-adhesive core blockboard: A combination of core strips and a coreboard made of a core without adhesive.
3. According to the surface processing of blockboard
Divided into three categories: single-sided sanding blockboard, double-sided sanding blockboard and non-sanding blockboard.
4, According to the use of the environment.
Blockboard for interior: Blockboard for indoor use.
Outdoor blockboard: Can be used for outdoor blockboard.
5, By the number of layers
Three-layer blockboard: A blockboard made of veneer is attached to each of the two large surfaces of the core.
Five-layer blockboard: A blockboard made of two veneers on each of the two large surfaces of the core.
Multi-layer blockboard: A blockboard made of two or more layers of veneers on each of the two large surfaces of the core.
6, By purpose
Ordinary blockboard. Blockboard for construction.
blockboard buy methods
Environmental protection, quality and service are the three indispensable selection criteria for consumers when choosing sheets. Environmental issues are more important to the quality of life of ordinary people. To comply with the following principles:
First,look at whether it is a regular manufacturer's product. To check the manufacturer's trademark, production address, anti-counterfeiting mark, etc.
Second, to see if the amount of formaldehyde released in the product test report is less than or equal to 1.5 mg per liter. Generally, the regular manufacturers produce test reports, and the detection value of formaldehyde should be as low as possible.
Third, look at the appearance quality of the blockboard. Look at whether the surface of the blockboard is flat, whether there is warpage or deformation, whether there is blistering or sag; the blockboard can be cut open at the scene or during construction to see if the inner core strip is even and tidy, the smaller the gap, the better; The width of the core should not exceed 2.5 times the thickness, otherwise it will be easily deformed; the core strip should be free from decay, breakage, wormholes, thrift and so on.
Whether the core strips are even and tidy, the smaller the gap, the better, the core strip has no decay, cracks, wormholes, thrift, etc. Under normal circumstances, the quality of the large core board with good appearance quality is better.
Fourth, see if there is any smell. If the blockboard emits a fragrant smell of wood, it means that the amount of formaldehyde released is small; if the smell is pungent, it means that the amount of formaldehyde is released, or do not buy it.
The Fifth is to add a phrase “must comply with national standards” on the purchase contract or invoice. At the same time, it is best to leave a sample in the construction. Once the project is finished, it is found that the indoor environmental pollution caused by the quality of the large core board can be used as The basis for judging responsibility. Because in accordance with national standards, from July 1, 2019, blockboards that do not meet national standards are not allowed to be sold in the market.
Blockboard is actually a building material that is very difficult to understand the price. When choosing a blockboard, consumers pay attention to the smoothness and weight of the board. They think that the smoother and heavier the better. The seller is looking at the drying and splicing of the board. The better the dryness, the lighter, smoother and smoother the board. How much does a piece of such a blockboard cost? With reference to market conditions in most places, a blockboard is now at least 80-100 yuan, which is only the most common. If it is a high quality material, it needs more than 100 yuan. As for the specific amount of money, you should go to the building materials market to understand the market will be better.
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