E. Because the surface of the wood board is rough, when the woodworking site is processed, a lot of glue or paint is usually used in the surface treatment. Therefore, the furniture made from the board is not environmentally friendly, which is why the taste is very exciting during the decoration. The reason is that such on-site furniture is the culprit of carcinogenicity and genetic mutations, and it is very harmful to the human body. B. It is easy to cause the phenomenon of violent teeth when cutting the board, so the processing equipment is required to be higher. Fiberboard (also known as MDF) E. When the fiberboard is produced, due to its internal structural characteristics, the amount of glue used is large, and to a certain extent, the environmental protection factor is low. Solid wood finger joints are easily deformed and cracked. Good solid wood finger joints are guaranteed to be of high quality. B. It is easy to cause the phenomenon of violent teeth when cutting the board, and the processing equipment is required to be higher, so the woodworking does not need The multi-layer solid wood board is made of multi-layer plywood which is arranged in a crisscross pattern, and the surface is made of high-quality solid wood veneer or technical wood as a fabric, and is produced by several processes such as cold pressing, hot pressing, sanding and health. Due to the non-deformable characteristics of the multi-layer solid wood board and the good performance of adjusting the indoor temperature and humidity, the surface layer solid wood skin material has the texture and feel of natural and real wood, so the selectivity is stronger. Therefore, it is favored by consumers. The multi-layer solid wood board has good structural stability, is not easy to be deformed, and is firm in quality. Due to the vertical and horizontal gluing, high temperature and high pressure, the deformation defects of the solid wood board are solved from the internal stress. In the production process, the self-made high-quality environmental protection glue is used to make the formaldehyde emission limit of the product meet the national standard requirements and be environmentally friendly. Common thickness: 3mm, 5mm, 6mm, 9mm, 12mm, 15mm, 16mm, 18mm, 25mm Urinary aldehyde glue is simple in production process and low in equipment requirements. It is mostly produced in many small workshops, but the formaldehyde emission is large, but because of its low price, it is mainly bonded on the substrate by wood board, medium and low density fiberboard. It is used with a large amount of sheet material. Tripolyhydrogen ammonia glue is a new type of environmentally friendly glue. Its production process and equipment requirements are relatively high, and the formaldehyde content is low, but the price is much more expensive than urethane aldehyde glue, generally used for high-grade plates. The brand of Shenzhou Homeland is one of the brands of Shanghai Huagang Wood Industry Co., Ltd. After years of market operation, it has formed a good reputation in Shandong and other markets. Through the shaping of the “Shenzhou Homeland†brand, the company has built “Happinessâ€. The concept of “Home, Building a Green Garden†is accompanied by excellent products into thousands of households. The company is currently one of the largest environmentally-friendly high- and medium-grade decorative veneers in China. Its products include ecological board, blockboard, decoration. Panels, gypsum board, plywood, laminated timber, etc., each series of products emphasizes green environmental protection, with the theme of caring for health. The top ten brands of the official website: Shenzhou Home Plate National Service Hotline: 400-0218580 Official WeChat: szjybc QQ: 2845704601 Smart Water Bottle,Bicycle Water Bottle,Temperature Display Water Bottle,Double Insulation Water Bottle NINGBO GECEN PROMOTION & GIFT CO.,LTD. , https://www.nbgecen.com
Wood board (commonly known as large core board)
The wood board (commonly known as the large core board) is a plywood with a solid wood core, and its vertical direction (different from the core sheet) is inferior in bending strength, but the transverse bending strength is high. Most of the market is now solid, glued, double-sided sanding, five-layer blockboard, one of the most commonly used plates.
advantage:
A. Blockboard has good screw strength and high strength. It has the characteristics of firmness, sound absorption and heat insulation. The moisture content of blockboard is not high, between 10% and 13%. It is easy to process and is used for furniture, doors and windows. Sets, partitions, false walls, heating covers, curtain boxes, etc., are the most widely used.
B. Because the interior is solid wood strip, the requirements for processing equipment are not high, which is convenient for on-site construction.
Disadvantages:
A. Because of the large amount of urethane glue used in the production process of wood board, the formaldehyde emission is generally high, and the environmental protection standards are generally low, which is why most wood board tastes pungent.
B. At present, most of the wood board in the market is cut corners during production. When the solid wood strip is spliced, the gap is large, and there is a void inside the board. If the nail is nailed in the gap, there is basically no nail holding force.
C. The solid wood strip inside the wood board is longitudinally spliced, so the vertical bending resistance is poor, and the long-term force will cause obvious lateral deformation of the board.
D, the solid wood strip inside the wood board is different in material, the density is different, only after simple drying treatment, it is easy to warp and deform; the structure is distorted and deformed, which affects the appearance and use effect.
Particleboard is a piece of buds, small diameter wood, fast-growing wood, wood chips, etc., which are cut into certain specifications, dried, mixed with rubber, hardener, water repellent, etc., and pressed at a certain temperature and pressure. A wood-based panel is called a particle board because its section is similar to a honeycomb.
Adding certain materials such as "moisture-proof factor" or "moisture-proof agent" inside the particleboard has become a moisture-proof particle board that people usually talk about. It is called a moisture-proof board. It has a certain moisture-proof effect because the particle board itself has strong moisture resistance and absorbs moisture. The post-expansion coefficient is small, and it is widely used in cabinets, bathroom cabinets, etc., but in reality, it has become a tool for many inferior particleboards to cover more internal impurities.
Adding green coloring agent inside the particleboard has formed the green-based particleboard that is currently said in the market. Many manufacturers use it to mislead into a green board. There is no scientific basis. The particleboards of top brands at home and abroad are actually mostly color substrates.
advantage:
A, has good sound absorption and sound insulation; particle board insulation, sound absorption
B. The inside is a granular shape with a cross-displacement structure, the performance in each direction is basically the same, the structure is relatively uniform, so the nail holding power is good, and the lateral load-bearing force is good.
C, strong moisture-proof performance, small expansion coefficient after absorbing water, is widely used in kitchen cabinets, bathroom cabinets and other environmentally humid cabinet products
C, the surface of the particle board is flat, the texture is realistic, the weight is uniform, the thickness error is small, the pollution is resistant, the aging is resistant, the appearance is beautiful, and the paint and various veneers can be applied.
F, particle board in the production process, the amount of glue used is small, the environmental protection factor is relatively high.
Disadvantages:
A, the internal structure is granular, not easy to mill
advantage:
A. The surface of the fiberboard is smooth and flat, and the material is fine, which is convenient for modeling and milling.
B. The toughness of the fiberboard is good, and it is not easy to break in the case of small thickness (such as 6MM, 3MM).
Disadvantages:
A. The fiberboard has poor moisture resistance and has a large expansion coefficient after absorbing water.
B. The inside of the fiberboard is a powdery structure, and the nail holding force is poor. It is easy to loosen after the screw is tightened.
C, because the strength of the fiberboard is not high, the height of the furniture can not be too high, the vast majority is 2100mm
Finger joint board, also known as integrated board, laminated material, finger joint material, that is, a piece of solid wood piece that has been processed by deep processing like a "finger head", because the wooden board has a jagged interface, similar to two fingers Cross docking, so called the fingerboard. Since the raw wood strips are cross-joined, such a combined structure has a certain bonding force, and since the surface plate is not required to be adhered up and down, the glue used is extremely small.
advantage:
Since the joints of the solid wood panels are less, the amount of glue used is also less, so the environmental protection factor is relatively high. Easy to process, can be cut, drilled, sawed and shaped.
Disadvantages:
The so-called solid wood particle board is actually a sheet produced by the particleboard process, and it is also considered to be a homogenized particle board. The scientific name of homogeneous particleboard is called oriented structure particle board. It is a kind of small diameter material, thinned wood, wood core, board skin, twig and other materials. It is processed by special equipment to grow 40mm, 70mm, width 5mm, 20mm, thickness 0.3mm, 0.7. The mater of mm is a kind of artificial board which is formed by hot pressing after drying, sizing and special equipment. The homogenized particleboard is dried by an advanced single-channel dryer. The expansion coefficient is small and the moisture resistance is very good. The flank is oriented layered, so its internal internal texture is evener than ordinary particleboard. And the powdery MDF has stronger nail holding power, bending resistance and stability. Oriented structural particle board is widely used as a high-grade environmentally friendly substrate by furniture manufacturers in Europe and the United States. The domestic high-end panel furniture market has also begun to adopt this type of plate in large areas. At present, almost all of the major brands of the major manufacturers use solid wood particle board.
Advantages (reference particle board):
A, better sound absorption and sound insulation; better insulation, sound absorption
B, better nail holding power, better lateral load-bearing capacity
C, better moisture-proof performance, smaller expansion coefficient after absorbing moisture, is widely used in kitchen cabinets, bathroom cabinets, etc.
C, the surface is flat, the texture is realistic, the weight is uniform, the thickness error is small, the pollution is resistant, the aging is resistant, and the appearance is beautiful.
F, solid wood particle board in the production process, the amount of glue used is small, the environmental protection coefficient is relatively high.
Disadvantages (reference particle board):
A, the internal structure is granular, not easy to mill
Common specifications: L2440*W1220
The melamine finish is printed on the surface of the decorative paper and then impregnated with melamine glue to form a melamine finish paper, which is then pressed onto the substrate by high temperature. Because it requires high flatness of the substrate surface of the board, it is commonly used for the surface finish of particle board and medium density board. This kind of sheet which has been decorated with melamine pressure veneer is usually called melamine board. The surface texture is realistic, wear-resistant, scratch-resistant, waterproof, and suitable for production. It is mainly used for panel furniture. manufacture. The melamine board has a thickness (gram weight) of the decorative paper. There are imported paper and domestic paper. The surface printing ink has the distinction between imported ink and domestic ink, and the effect is also very different. According to the different dipping process, it is divided into three ammonia glue and semi-three ammonia glue. The wear resistance coefficient of semi-three ammonia is not as good as that of all three ammonia. According to the different steel plates when the decorative paper is hot pressed, it is divided into different effects such as smooth surface, jade surface, relief, cloth pattern, corrugated surface and rain screen surface.
Reasons for the production of formaldehyde from wood-based panels
(1) When the wood itself is dry, formaldehyde is generated due to internal decomposition. The smaller the density of wood, the stronger the ability to disperse formaldehyde.
(2) Glue used for bonding the substrate of the board is one of the main reasons for the production of formaldehyde. At present, the main glues on the market are urea aldehyde glue and melamine glue.
This article focuses on the most commonly used woodworking boards, particleboards, fiberboards, solid wood fingerboards and multi-layer solid wood boards and solid wood particle boards in custom-made wardrobe processing. What are the advantages and disadvantages of these, what kind of boards are they; common boards Finished treatment. Let's take a look at the top ten brands of environmental protection sheet, Shenzhou Home Plate, together!