It is not easy to deform and crack, and the shrinkage and expansion coefficient is very small. It has a good ability to adjust indoor temperature and humidity. The surface layer can show the natural wood grain of wood, with simple paving and wide application range. The price is higher than the composite floor and lower than the solid wood floor. Suitable for geothermal heating room installation.
Chinese name multi-layer solid wood floor foundation solid wood single floor
Multi-layer solid wood floor is a new floor product which was born after improvement and innovation on the basis of solid wood single floor. Multi-layer solid wood floor is a tongue-and-groove floor based on plywood, with rare hardwood chips or sliced thin wood embedded in the surface and pressed with urea-formaldehyde resin glue. Its panel adopts the most popular rare tree species in the world today, and it is made by bonding and pressing multiple layers of criss-crossing wooden boards through special technology, and the whole structure is solid wood.
Multi-layer solid wood flooring originated in Japan and developed countries in Europe and America in the 1960s and 1970s, and occupied the mainstream position in the world flooring market for a long time. Since 1995 entered the China market, it has matured after fifteen years of development. During the period of 1996 ~ 1998, the multi-layer solid wood flooring in China was mainly OEM, lacking independent brands. In 2003, users in northern China gradually accepted multi-layer solid wood flooring, and at that stage, the brand of multi-layer solid wood flooring started in China.
From 2003 to 2008, the industry statistics show that the traditional pure solid wood flooring and the new solid wood flooring represented by three-layer and multi-layer solid wood have been showing a changing trend. In the past two years, new solid wood has maintained a high growth rate of more than 30%. According to the analysis of the insiders, under the economic structure of 2009-20 10, the category upgrade of solid wood flooring caused by multi-layer solid wood flooring will become the key driving force to continuously promote the consumption boom of home improvement flooring, and its development trend is as follows:
Multi-layer solid wood flooring will grow steadily
When the whole world is calling for the arrival of the "low-carbon era", the composition of the flooring industry has also been deeply affected. Traditional pure solid wood flooring with precious tree species as raw materials is bound to show a downward trend in the composition of floor types. Due to the similar production cost and price limitation with pure solid wood flooring, the development and market acceptance of three-layer solid wood flooring is slower than that of multi-layer solid wood flooring. Multi-layer solid wood flooring is equivalent to solid wood flooring in texture, feel and temperature and humidity adjustment, and its base materials are all made of high-quality fast-growing wood, which not only protects resources but also has more stability; At the same time, it is cheaper than pure solid wood and three-layer solid wood floor; Moreover, its glue consumption is only one tenth of that of laminate flooring, which is more environmentally friendly than laminate flooring.
The table below shows the estimated annual demand data of solid wood composite flooring from 2006 to 20 10 (unit: 10,000 square meters).
age
2006
2007
2008
2009
20 10
Demand quantity
5600
6500
7500
8600
9800
Products are diversified and personalized.
In recent years, in Europe, America, Japan, South Korea and other places, the sales of multi-layer solid wood floors have accounted for more than 50% of the total sales of floors, and multi-layer solid wood floors with patchwork and antique surfaces are highly respected for their individuality. Its flexible surface pattern design has changed the image of wood floor in color and design, provided a variety of choices for consumers when choosing wood floors, and was quickly praised by some high-end consumers in China who pay attention to taste and artistry.
Glueless locks are spliced into a trend.
Because the common straight tenon floors need to be glued during installation or cracks will still occur between floors during use due to improper installation, the glue-free latch splicing mode with simple splicing, tight splicing, high assembly efficiency and low installation cost has become a trend. Moreover, because of the influence of lock on the strengthened floor, people also hope that the tenon and groove of multi-layer solid wood floor will be made into a lock shape.
Move south and attach importance to regional production
Multi-layer solid wood floor is the best choice for floor heating at present. It is made by cutting logs into 2-3 mm thin boards and then laminating them with glue. This structure reduces the stress change of wood, so it has the most stable performance in all kinds of wood floors and is very suitable for floor heating. Therefore, after fifteen years of development, multi-layer solid wood flooring has been deeply rooted in the northern market of China. In contrast, the multi-layer solid wood flooring market in the south is not very developed, one is consumer awareness, and the other is regional. In the future, the brand of multi-layer solid wood flooring will invest a lot of manpower and material resources to promote multi-layer solid wood flooring in the south, and even produce multi-layer solid wood flooring with regional differences between north and south.
Multi-layer solid wood flooring brands are gradually increasing.
With the development of multi-layer solid wood flooring, the number of brands producing multi-layer solid wood flooring will gradually increase, and consumers will have more choices. At the same time, some well-known brands will gradually establish their leading position and attach importance to the protection of patents and intellectual property rights.
The production of solid wood flooring consumes a lot of precious tree species. The world today is facing the pressure of scarcity of forest resources. The road to the development of solid wood flooring in China is not to introduce resource forests from other countries and regions, but to develop more and better multi-layer solid wood flooring through scientific and technological means, which not only meets people's pursuit of life, but also meets the scientific and effective utilization of resources. Its popularization is a social undertaking in which economy and environmental protection are harmonious and unified, and it is a contribution to the virtuous circle of China's forest products economy. Multi-layer solid wood flooring production enterprises should shoulder the mission of the times, make good use of forestry resources, maintain the sustainable development of resources and benefit the whole society.
production flow
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The first step: Only by selecting materials from logs can a good floor be produced, and the quality of logs is very important to the quality of the floor. The quality control of a good brand begins with the selection of logs, and good wood is the basis for producing high-quality floors.
Step 2: Log rotary cutting and drying are used to process and manufacture solid wood core board of multi-layer solid wood composite floor substrate. The quality of solid wood core board is closely related to the quality of finished floor. The thickness of rotary-cut solid wood core board is about 1.5 mm, and it takes some time to dry after rotary-cutting.
Step 3: Sorting of solid wood core boards In order to ensure the quality of each floor, regular manufacturers usually only choose solid wood core boards with uniform thickness, moderate thickness, no defects and no cracks as the floor substrate, and full-time sorters choose the floor substrate.
Step 4: Glue the core board with professional gluing equipment, which can ensure the uniformity of gluing quantity and improve the gluing efficiency. After 8- 10 layers of thin solid wood core boards are glued, they are arranged in an orderly crisscross manner and bonded together, which can change the original stretching direction of wood fibers. It is this step that completely improves the limitation of wet expansion and dry shrinkage of solid wood.
Step 5: hot pressing and bonding the core plate; Hot pressing is an important process in the production of solid wood composite flooring, which is directly related to the quality of finished flooring. The hot pressing equipment used in large factories is relatively advanced, and the production management personnel monitor the whole process, so the product quality is relatively stable.
Step 6: Sanding the substrate with fixed thickness. Sanding the surface and bottom of the floor substrate with a large-scale fixed thickness sander can ensure the flatness and smoothness of the board surface, thus improving the accuracy of the product and providing a reliable guarantee for the bonding of precious bark on the decorative surface.
Step 7: After the primary processing of substrate sorting is completed, the substrate of healthy floor will be carefully sorted by a special person to eliminate unqualified products. After high temperature and high pressure, there is a large internal stress in the substrate, which needs to be released after standing for 15 to 20 days to make the substrate balanced and stable. This process is called keeping in good health.
Step 8: Choose solid wood veneer and multi-layer solid wood composite floor for dry environment in the north, so dimensional stability is the key. In order to prevent cracking in dry and hot season, all the precious wood skins on the surface of big brand solid wood composite floors are selected by professional quality inspectors one by one, and the moisture content is strictly controlled.
Step 9: floor molding: the selected veneer is coated with environmental protection glue and stuck on the floor substrate, and then hot-pressed in an advanced hot press to make qualified multi-layer solid wood composite floor.
Step 10: Floor Maintenance Because the floor substrate is hot-pressed after the decorative veneer is attached, there is a large internal stress in the floor, so it is necessary to maintain the floor in a balanced curing barn with constant temperature and humidity for about 20 days, so as to ensure a more stable floor quality.
Step 11: the floor is cut and slotted, and the floor will be cut and shaped by slotting equipment. The quality of slotting is of great significance to the splicing of finished floors, so many large domestic enterprises have introduced cutting equipment imported from Germany to ensure the quality.
Step 12: spray paint, dry and finalize the design, and the floor with groove passes through spray paint equipment. After eight coats of primer and four coats of topcoat, the surface paint of the finished floor will be wet and tough. After that, only sorting and packaging are needed to end the whole production process. [ 1]
superiority
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Multi-layer solid wood floor is a new floor between solid wood floor and laminate floor, which is a new trend of floor purchase. Multi-layer solid wood floor retains all the advantages of natural solid wood floor, which not only has the natural texture and elasticity of solid wood floor, but also overcomes the common problem that natural solid wood floor is easy to swell and shrink, and has the characteristics of strengthening floor deformation resistance, corrosion resistance and easy cleaning.
Multi-layer solid wood floor is plywood structure. Its surface layer is made of precious wood and refined by rotary cutting into thin wood. The substrate below the surface layer is made of ordinary wood cut into thin slices, criss-crossing and multi-layer combination. Then, the multi-layer thin sheets are bonded by environmental protection waterproof glue and compounded at high temperature and high pressure. Wood fibers are arranged in a network overlapping way, with very compact structure and specific and stable performance, which completely overcomes the defect that natural materials are easy to deform.
The surface layer of multi-layer solid wood floor has been painted for many times, so that the paint penetrates into the cracks of wood tissue, and infrared rays, electronic rays and thermal radiation are applied to form a whole in the wood tissue, which hardens the wood. Therefore, the multi-layer solid wood floor is not easy to be polluted and scratched, has strong wear resistance, and can maintain the aesthetic feeling of new materials and the texture of solid wood for a long time.
Due to the multi-layer glue compound, the multi-layer solid wood floor has good waterproof performance and can be used in wet floors and areas. Multi-layer solid wood floors are treated with insect-proof glue, which can effectively prevent moth-eaten and is non-toxic to human body.
Practice has proved that the foot comfort of multi-layer solid wood floor is the same as that of natural solid wood floor, and the paving method is basically the same. Because of its obvious advantages, its market consumption is also increasing gradually.
When choosing multi-layer solid wood flooring, we should first choose the appearance quality, not only to see whether the color, texture and paint quality of the surface wood meet the grade standard, but also to see whether there are wood defects such as decay, dead knots, knots, wormholes, resin-coated skin, cracks or lax flat-fell seams, the wood grain is in harmony with the perceived color, the paint coating should be uniform, there should be no bubbles, small white spots and other phenomena, and the surface should not be damaged by obvious stains. When choosing the appearance, it depends on whether the tenons and grooves around the floor are complete.
Secondly, choose whether the specifications and dimensions of the product are consistent with the length, width and thickness of the size you purchased, and then check whether the dimensional tolerance of the product is consistent with the purchased grade. The measurement method can take several layers in the same packing box and assemble them by yourself. After assembly, you can observe whether the tenon-groove combination is tight, and at the same time you can feel whether the spliced floor is uneven by hand. If there are outstanding sensory phenomena, the product is unqualified. After touching, pick up two assembled multi-layer solid wood floors and shake them in your hand to see if they are loose.
Finally, choose the internal quality, which is the key index of multi-layer solid wood flooring. Its waterproof and moisture-proof performance can be seen from the expansion rate of water absorption thickness. The lower the water absorption thickness, the better, preferably less than 2%, followed by less than 5%. Fireworks burn on the surface. If there is no trace, it means that the fire protection coefficient is high. Formaldehyde content is an index that cannot be ignored. According to national regulations, the formaldehyde content per 100g floor shall not exceed 9mg. "Three-point floor and seven-point installation", so when choosing multi-layer solid wood floor, it is recommended to choose brand floor store.
structure
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Environmental affinity layer-surface layer
The surface of multi-layer solid wood floor is pressed by rare tree species, and the texture is natural and generous, which maintains the natural dignity of log floor and reduces the excessive consumption of precious wood; Get close to nature and enjoy life. Strict water content treatment, so that the water content of the surface plate and substrate after the plate is formed.
There is a scientific difference in speed, which makes the plate in a prestressed state. When used in winter or heating and drying season, the pressure of the panel is released, so that the deformation of the panel and the substrate can be balanced, and it will not crack in geothermal heating environment.
The surface layer of multi-layer solid wood flooring is usually African rosewood, Sabili, Red Kaya, Begonia, European white oak, oak, rosewood, zebra wood, black walnut, big goa 'natto, cajanus cajan, elm and other rare tree species with different grades of decorative effects. * * * Developed more than 60 best-selling colors at home and abroad, and selected more than 40 kinds of flour materials. There are not only 0.6mm flat roll coating products that sell well in domestic and foreign markets, but also hand-scraped antique and wire-drawn antique series that are in great demand in domestic and foreign markets.
Value innovation layer-base
The base material of multi-layer solid wood floor is completely from the masterpiece of science and technology, which completely changes the traditional thinking of floor. It uses non-rare and renewable wood laminated as the base material to balance the "internal stress" of the floor and eliminate the "anisotropy" of the floor, thus overcoming the shortcomings of traditional solid wood floor, such as easy warping and deformation, dry shrinkage and wet expansion. Tested by experts in various natural and geothermal environment conditions, the expansion and contraction of multi-layer solid wood floor is only115 ~1/20 of that of solid wood veneer, which shows that its stability is quite strong. The middle layer is made of high-quality wood imported for more than 70 years. After rotary cutting, after soaking, cooking, drying and other treatments, the internal stress of wood is reduced to near zero after basic modification, which avoids the problem of cracking of core board in use.
The base material of solid wood composite floor is low-density wood, such as eucalyptus, eucalyptus, poplar and Pinus sylvestris var. mongolica. Moreover, the number of floors of multi-storey floors is generally odd, with the middle as the symmetrical center, and the internal stresses of the upper and lower floors compete with each other, thus eliminating the anisotropy of wood to the maximum extent, ensuring the stability of the wood floor in use and avoiding the deformation, bending and cracking of the wood floor. The substrate has good water resistance and heat resistance, so that it does not crack and deform, thus ensuring the quality of the floor substrate.
coating
Using American PPG paint and unique roller coating technology, the elasticity and toughness of paint film are effectively enhanced, and the phenomenon of paint explosion due to hardness and brittleness is prevented. Ten precise paint film treatments to ensure durability. Surface matte anti-slip treatment, elegant and generous, safe to walk and comfortable to touch.
The paint of solid wood composite floor mostly adopts ultra-wear roller paint and ultra-wear spray paint (also known as piano paint). Roller coating is the best geothermal energy coating, and its good toughness and elasticity can prevent paint explosion caused by excessive drying of the floor. UV paint coated on the floor surface has good antibacterial and anticorrosive properties, can effectively inhibit the reproduction and growth of various bacteria for a long time, and is sanitary and convenient to clean, bright and clean.
characteristic
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Comprehensive comparison between multi-layer solid wood flooring, solid wood flooring and laminate flooring
1, Stability: The unidirectional wood fiber of solid wood floor is different from the age of the core and edge wood, which leads to different wood density, different thermal expansion coefficient and easy deformation of the board. It's easy to stretch the seam under dehydration. The production process of laminate flooring is to process wood waste into powder, add glue, press it into high-density board at high temperature and high pressure, then paste it with computer-sprayed wood grain paper, then coat it with alumina paint and wear-resistant materials, and finally process it into the shape we see. The stability of the reinforced plate is good, but because its base material is a high-density plate, it is easy to expand after being heated and wetted. If the contraction joint left during installation is small, it is easy to arch, and at the same time, the floor is afraid of water, which is easy to expand after encountering water and difficult to handle. The production process of multi-layer solid wood flooring is to cut wood into veneers, and then hot-press them with resin glue according to the crisscross of wood grain. Because of its criss-crossing structure, each layer contains each other, which overcomes the coefficient of thermal expansion and cold contraction of wood above 85% and has little deformation. Moreover, the core board of its substrate is made of eucalyptus with loose wood, and the loose pores between the wood can also offset the stress of some wood expansion and contraction. So its stability is far stronger than other floors.
2. Feet: Both solid wood flooring and multi-layer solid wood flooring are solid wood, and the foot feel is the same, while the foot feel of laminate flooring becomes stiff due to different structures (customers can clearly feel the difference between laminate flooring and multi-layer solid wood flooring). It should be noted that the paint surface of the solid wood floor is a thick layer of UV paint, and the human body only touches the UV paint instead of the wood itself; The paint of multi-layer solid wood floor penetrates into the pores of wood fibers through advanced infiltration technology, and the human body is exposed to the mixture of paint and wood. Therefore, multi-layer solid wood flooring has the characteristics of warm in winter and cool in summer, which is also the performance that other flooring materials do not have. Customers can put their hands on multi-layer solid wood floors and other floors and immediately feel the obvious difference between them.
3. Abrasion resistance: The national standard for testing the abrasion resistance of multi-layer solid wood flooring is that the abrasion quality is not more than 0.08 mg when the rotation speed is 100 under the positive pressure of 500 Newton. The paint surface of multi-layer solid wood floor is generally UV paint, and the surface is coated with a layer of porcelain powder, which has wear resistance comparable to that of aluminum oxide for strengthening the floor. Take Jiabi as an example: Jiabi multi-layer solid wood floor adopts advanced ultra-wear-resistant and environment-friendly UV resin paint imported from abroad (American PPG), and the floor produced has good wear-resistant, wear-resistant, compressive and scratch-resistant properties. Then, through the fine surface treatment of 9 coats and 2 coats (UV drying equipment 100% curing), the quality of paint surface is comprehensively improved.
4. Care and maintenance: Multi-layer solid wood floors are very convenient to care for like laminated floors, but the care of solid wood floors is very troublesome. The most fundamental reason is the characteristics of their different wood structures (see the section on stability for details). Solid wood flooring is easy to dehydrate and deform, so it is necessary to keep humidity with a humidifier in dry winter; But in summer, the humidity is too high or it is easy to swell when it meets water. In short, the solid wood floor is very arrogant. If you don't pay attention to it during maintenance, it will cause problems such as seam drawing, deformation and paint explosion. In addition, because the paint surface of solid wood floor is painted by rolling and spraying, it is easy to explode after impact, and it is easy to wear the paint surface after long-term use (it is difficult to repair).
Maintenance measures
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1, some sharp feet, especially heavy objects, are forbidden [2] to be placed directly on the surface of the wood floor, so as not to scratch or damage the surface of the wood floor, which will shorten the life of the wood floor. When placing heavy objects, try to put them aside, because this will allow the other floor to move freely and will not cause the floor to arch. It also needs to be covered with pads for protection.
2. Always keep the floor clean and tidy, and it is best to have no dust (such as fine sand and hours). Therefore, you should always use a vacuum cleaner to absorb garbage to avoid scratches caused by hard particles on the board when shoes move.
3. Do not accept corrosive liquids, strongly acidic and alkaline substances, such as toilet cleaners and kitchen degreasing agents. It is forbidden to put high-temperature liquid or objects directly on the surface of wooden floor to avoid damaging the surface. During the maintenance of solid wood floor, remember to deal with the spilled chemicals in time.
4. When cleaning with a wet rag, remember that the humidity should not be too high, so as to avoid moisture hiding from the gap and increase the humidity of the wooden floor.
5, where the sun shines, avoid exposure as much as possible, follow the exposure for a long time, avoid overheating or accelerate the oxidation reaction. Let the fan be a heater, and the heater placed directly on the ground is also a wooden floor. Remember to use it less or at a suitable distance. Therefore, we must pay attention to this when installing solid wood floors.
6. In the rainy season with excessive humidity, it is best to start the dehumidifier, dehumidify the air conditioner and control the air humidity to achieve the maintenance effect of the solid wood floor. Of course, you can also use a dehumidifier to show your strength.
7. In the dry season, it is best to increase the humidity. The easiest way is to put a pot of water in the corner. This practice is found in many supermarkets and jewelry stores. Of course it makes sense. Or buy a humidifier, turn it on, increase the humidity of the air, and keep the moisture in the air, so as to avoid cracking the wooden floor due to too dry breathing. It is normal to keep the air relative humidity between 40% and 70%.
8. If possible, you can ask a special waxing company to provide on-site service and regularly maintain the solid wood floor. You can also buy your own wood floor maintenance solution and maintain it at home. Only in this way can we maintain a charming luster.
9. If there are babies at home-cats and dogs, remember to take good care of their excrement, because it will cause alkaline corrosion to the wood, leading to discoloration and stains on the floor.
10, wet ground, especially the first floor, basement, need to do a good job of waterproof layer at the grass-roots level before laying wooden floor. When laying, it is best to brush waterproof paint on the board in advance. It is best not to use the solid wood floor on the first floor.
1 1. If you accidentally drop oil on the floor, please wipe it off immediately with a rag or paper. If it is not handled in time, it will cause oil stains to change color. Wipe carefully with detergent, qualified water, etc. , and then waxing.
12. If the wall surface is found to be permeated and wet, check the source immediately, otherwise it will be damaged.
13. once the footprints of termites are found, hehe, please ask the company to eliminate them quickly, not only for local treatment, but for the whole house.