Wood-based panels are made of small wood and mixed with other fibers. As wood becomes more and more rare and precious, wood-based panels that meet the sustainable development concept have gradually become the most commonly used panels in decoration. However, wood-based panels generally have problems such as the difficulty of exceeding the standard of formaldehyde. In order to create a healthy and environmentally friendly home, it is necessary to be cautious when selecting artificial boards.

Part1: Learn more about the detailed use of commonly used artificial panels

There are many types of wood-based panels, such as plywood, large core panels, veneers, fiberboards, and particleboards. Let's take a look at the characteristics of the main five plates.

1. Introduction of plywood
The plywood is a plate which is formed by rolling and cutting the logs in the direction of the annual ring into a large veneer, which is dried and glued, and then laminated according to the principle that the wood grain of the adjacent veneers is perpendicular to each other. The outermost front panel is called a panel, the reverse side is called a back panel, and the inner layer is called a core panel.

2, large core board introduction
The large core board, also known as the blockboard, is made by cutting the logs into strips, splicing into cores, and processing the outer surface materials, generally in a five-layer structure.

3, the introduction of the veneer
The veneer is called a decorative veneer veneer plywood. It is a surface that is cut into a certain thickness by peeling natural wood or technical wood, adhered to the surface of the plywood, and then hot pressed to form a surface for interior decoration or furniture manufacturing. material.

4, fiberboard introduction
Fiberboard is a kind of board made of wood or plant fiber as the main raw material, which is made by fiber separation, sizing, drying, paving, hot pressing, sawing and inspection. It is one of the leading products of wood-based panels.

5, particle board introduction

Particleboard, also known as particle board, is a plate made of wood scrap (wood shavings, sawdust or similar materials) or non-wood plant scraps (flax, bagasse, wheat straw, straw or similar) and adhesive. .



Part2: There is a way to buy a non-defective veneer

Plywood is a plate that is often used for interior decoration. Let's take a look at the points of attention for purchasing plywood.

1, visual inspection
Plywood has the difference between the front and the back. When selecting, the plywood should have clear wood grain, smooth and smooth front surface, no roughness, and should be smooth without any feeling of stagnation; the board should not have any defects such as breakage, bruises, bruises, shackles, etc.; no degumming.

2, check the seams
Some plywood is made by sticking two veneers of different textures together, so in the selection, it should be noted that the splice joints should be tight and there is no unevenness;

3, choose not to glue the plywood
When selecting plywood, you should pay attention to the selection of non-dispersed plywood. If the hand is knocked on all parts of the plywood, the sound is brittle, which proves that the quality is good. If the sound is boring, it means that the splint has been discolored.

4, pay attention to coordination with wood, furniture and other hue
When selecting a veneer, pay attention to uniform color, consistent texture, and the color of the wood is coordinated with the color of the furniture paint.

5, pay attention to environmental indicators
Pay attention to environmental protection indicators and select low-formaldehyde release plywood produced by environmentally friendly glue.


Part3: There is no way to buy a large core sheet.

Large core board, also known as blockboard, is also a relatively common board. Pay attention to the following points when purchasing.

1, visual inspection
First of all, the large core board should be flat and flawless, and the logo should be complete. The whole package of the large core board should be completely fitted between the sheets, and the surface of the large core board should be touched by hand. The high quality large core board should be dry and smooth.

2. See if the texture of the filled material is dense.
There are no obvious gaps and decaying wood strips. There may be eggs in the decaying wood strips, and insects will occur in the future.

3. Check for holes.
Look carefully at the periphery of the large core board with or without glue, make up the putty, etc. This phenomenon is generally to compensate for the internal cracks or voids; you can also use the sharp-mouthed instrument to strike the surface of the board, to hear if the sound is very different, if the sound There are changes, indicating that there are holes inside the board.

4, 掂 weight
Lift one end of the large core board and smash it. The high-quality large core board has a sense of overallity and heavyness. This thick feeling is a good condition when the hand feels dry, otherwise the dryness is not enough.

5, view the environmental indicators of the large core board
Because the large core board is generally used in the slab splicing and bonding with the panel, urea formaldehyde glue is used, and formaldehyde is emitted from the urea-formaldehyde glue. If the large core board is made of environmentally friendly glue, the storage place and the board will only have a woody taste, and the smell of formaldehyde will not be smelled. If it emits a pungent odor, it cannot be used for interior decoration. Consumers should identify the above signs when purchasing blockboard, and if necessary, check the product inspection certificate to confirm that it is environmentally friendly sheet that is harmless to the human body.


Part4: There is a way to buy a no-fat veneer

The veneer is a piece of wood that has been cut into a certain thickness by natural wood or technical wood. It is adhered to the surface of the plywood and formed by a certain process. Pay attention when purchasing.

1, check the thickness of the skin
The thicker the thickness of the sheet, the better the durability. After the paint is applied, the solid wood feels strong, the texture is clearer, and the color is more vivid and saturated. The thickness of the sheet is identified by observing whether there is sand penetration on the edge of the board, observing whether the board surface is permeable or coated. Whether the water test shows pan-green, bottom-through, etc., if the above problems exist, the skin is usually thin.

2, view the bottom plate material
The material of the bottom plate is better for the willow wood, and the market is mostly poplar core, to be specifically determined. Look at the weight of the bottom plate, the weight is mostly willow wood or other hard wood, the light is poplar; look at the color of the plate, very uniform white or medium plate is usually poplar covered by dyeing; whether the board is warped and deformed, can Whether it is erected vertically, if it is flat or flat, it will be warped or the board will be loose and not sturdy. If it cannot be erected, it will be a poor quality floor.

3, see the manufacturing process
It can be judged from the aspects of slice cutting and splicing and affixing, seaming treatment, defect repairing process, sanding defect, floor defect and other appearance damage and pollution. Generally, the visual acuity is visually measured at a distance of about 1 to 1.5 meters, and the process defects, the floor defects, the human damage, and the polluters are not affected, and the apparently visible and serious defects are generally reduced to one level or qualified.

4, check the appearance of the board and decorative
The surface texture is clear and the rules are arranged and beautiful, and the color coordinator is excellent. Uncoordinated color, irregular color difference, even discoloration, blackening, etc., should be reduced to first-class or qualified according to its severity. Natural defects such as black spots, thrift, etc., are generally under normal light source, visually measured by a person with normal vision at a distance of about 1 to 1.5 meters.

5, check the bonding strength
The gluing strength is checked by the knife knives method. This method is the most intuitive method for testing the gluing strength. It is opened along the glue layer with a sharp flat blade. If the rubber layer is broken and the wood is not damaged, the bonding strength is poor.

6, pay attention to product environmental protection
To choose a plate with low formaldehyde emission, do not choose a veneer with irritating odor, because the greater the odor, the higher the amount of formaldehyde released, the more harmful the pollution, the greater the damage.


Part5: Buying and not eating chips

At present, there are many particleboard enterprises, but some are generally small in scale, equipment and technology are backward, and many companies do not pay attention to product quality. The dust produced by bark and MDF is used as raw material for particleboard. Consumers are buying It is not easy to distinguish with the naked eye. For this reason, in the face of the general quality of the particle board products with different quality differences between different products, there are several suggestions on how to purchase the particle board.

1. Check product information
Generally, the formal product country clearly stipulates that there should be a complete set of product information, including the manufacturer, brand, product standard, inspection grade, instructions for use, etc. The information is complete, indicating that the production enterprise is a formal enterprise with a certain scale, even if it appears The problem consumer is also well documented.

2. Select different types of products as needed
Particleboard products can be divided into: ordinary boards used in dry state, furniture used in dry state and interior decoration boards, structural boards used in dry state, and structures used in wet conditions. A board, a reinforced structural board used in a dry state, and a reinforced structural board used in a wet state. The physical and chemical properties of different types of particle board are different, and the type of particle board should be selected correctly.

3. View product test report
Generally, the products produced by regular manufacturers have test reports. The report includes some important physical and mechanical performance indicators. The detection value of the mandatory free formaldehyde should be as low as possible.

4, appearance quality
First, observe the classification of the surface layer and core layer shavings in the board. If the classification is not obvious, the surface of the shavings is rough, and its physical and mechanical properties are poor, which is not conducive to the later finishing treatment. Secondly, it is necessary to look at some defects of the board, such as corner damage and breakage, with metal debris, etc. is not allowed. Indentation, gel spots, oil stains, etc. are allowed to be minimally affected by the grade.

5, smell the smell of the particle board
If the large core board emits a scent of wood, it means that the formaldehyde is released less; if the smell is pungent, it means that the amount of formaldehyde is released, it is best not to buy.


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April 16, 2023