I. Density (g/cm3): This refers to the quality of the laminate flooring. The substrate used for laminate flooring is medium and high density board (high density fiberboard density 0.82g-0.94g/cm3). The board is made of wood fiber and glue pressed by high temperature and high pressure. The higher the density, the better the quality of the substrate such as impact resistance and pressure resistance.
Second, the surface wear resistance (R): This indicator is more indicators of the promotion of wood flooring in the market, consumers are more concerned. Since there is no national standard for laminate flooring in China, the indicators measured by different detection methods often have large differences. According to the European EN13329 standard, the detection value of the wear resistance number can be divided into six grades. Test method for wear resistance number, according to EN13329, three samples are tested with S-42 sandpaper, and one sandpaper is converted every 200. In the four quadrants A, B, C and D, three quadrants are clearly visible. The number of revolutions at the time of wear is the initial wear value (i.e., the IP value). In another EN438, the test sandpaper was converted every 500 times. Obviously, the results measured according to EN438 are much higher than the IP values ​​tested according to EN13329. Now many domestic product testing reports are based on the EN438 test method. The initial wear resistance value (referred to as the wear-through surface pattern) is measured according to the EN 438 standard; the final wear resistance value (refers to the exposed substrate). Wear resistance indicators are generally measured in revolutions, of course, the higher the better.
Third, the amount of formaldehyde released: refers to the release of free formaldehyde. This is an environmental indicator. The national standard for formaldehyde emission from composite flooring is 30mg/100g, preferably 9mg/100g, in the approval standard. For the amount of formaldehyde released, consumers don't have to talk about it. In fact, in the home decoration, there are materials containing free formaldehyde everywhere, such as paint, paint, furniture, flooring, plywood, glue and so on. The formaldehyde emission of these materials is a qualified product as long as it meets the national standards.
4. Static bending strength (Mpa): This is an indicator to test the resistance of laminate flooring to bending and deformation, and is also one of the important indicators for the performance of laminate flooring. The higher the value of this indicator, the stronger its resistance to bending and deformation.
5. Internal bonding strength: The internal bonding strength is the key to reflect the quality of the bonding between the fibers inside the substrate. The lower strength will cause the product to stratify.
Sixth, water absorption thickness expansion rate (%): It can be said that this is one of the most important technical indicators for testing laminate flooring. The most obvious advantage of laminate flooring compared to wood flooring is wear resistance and no deformation. The thickness of the water absorption thickness expansion is an important factor that determines whether the wood floor will deform and deform after being damp. The water absorption thickness expansion rate is high, the floor moisture resistance is poor, the deformation after the moisture is large; the water absorption thickness expansion rate is low, the deformation of the laminate wood floor after the tide is small, the moisture resistance is strong, and the product quality is better.
7. Moisture content (%): This indicator is almost negligible, and the moisture content of products with indicators below 10% is quite low.
Eight, the surface is resistant to cigarette burning: the test results have no specific value, and the surface is marked with black spots, cracks, bubbling, etc. It is also one of the requirements for testing the quality of laminate flooring, whether it can be flame retardant or resistant to cigarettes. Burning. Nine, surface impact resistance (mm): This is also one of the important indicators of the quality of laminate flooring. This refers to the diameter of the floor under test under the same conditions, after the impact of the steel ball impact. The smaller the value, the stronger the impact resistance of the product. Among these indicators, the most important and most important indicators that directly explain the quality of the floor are: water absorption thickness expansion rate, surface impact resistance, static bending strength and wear resistance. Consumers should have a detailed understanding of the technical indicators and testing indicators of various brands of laminate flooring, and comprehensively select and compare them.
Second, the surface wear resistance (R): This indicator is more indicators of the promotion of wood flooring in the market, consumers are more concerned. Since there is no national standard for laminate flooring in China, the indicators measured by different detection methods often have large differences. According to the European EN13329 standard, the detection value of the wear resistance number can be divided into six grades. Test method for wear resistance number, according to EN13329, three samples are tested with S-42 sandpaper, and one sandpaper is converted every 200. In the four quadrants A, B, C and D, three quadrants are clearly visible. The number of revolutions at the time of wear is the initial wear value (i.e., the IP value). In another EN438, the test sandpaper was converted every 500 times. Obviously, the results measured according to EN438 are much higher than the IP values ​​tested according to EN13329. Now many domestic product testing reports are based on the EN438 test method. The initial wear resistance value (referred to as the wear-through surface pattern) is measured according to the EN 438 standard; the final wear resistance value (refers to the exposed substrate). Wear resistance indicators are generally measured in revolutions, of course, the higher the better.
Third, the amount of formaldehyde released: refers to the release of free formaldehyde. This is an environmental indicator. The national standard for formaldehyde emission from composite flooring is 30mg/100g, preferably 9mg/100g, in the approval standard. For the amount of formaldehyde released, consumers don't have to talk about it. In fact, in the home decoration, there are materials containing free formaldehyde everywhere, such as paint, paint, furniture, flooring, plywood, glue and so on. The formaldehyde emission of these materials is a qualified product as long as it meets the national standards.
4. Static bending strength (Mpa): This is an indicator to test the resistance of laminate flooring to bending and deformation, and is also one of the important indicators for the performance of laminate flooring. The higher the value of this indicator, the stronger its resistance to bending and deformation.
5. Internal bonding strength: The internal bonding strength is the key to reflect the quality of the bonding between the fibers inside the substrate. The lower strength will cause the product to stratify.
Sixth, water absorption thickness expansion rate (%): It can be said that this is one of the most important technical indicators for testing laminate flooring. The most obvious advantage of laminate flooring compared to wood flooring is wear resistance and no deformation. The thickness of the water absorption thickness expansion is an important factor that determines whether the wood floor will deform and deform after being damp. The water absorption thickness expansion rate is high, the floor moisture resistance is poor, the deformation after the moisture is large; the water absorption thickness expansion rate is low, the deformation of the laminate wood floor after the tide is small, the moisture resistance is strong, and the product quality is better.
7. Moisture content (%): This indicator is almost negligible, and the moisture content of products with indicators below 10% is quite low.
Eight, the surface is resistant to cigarette burning: the test results have no specific value, and the surface is marked with black spots, cracks, bubbling, etc. It is also one of the requirements for testing the quality of laminate flooring, whether it can be flame retardant or resistant to cigarettes. Burning. Nine, surface impact resistance (mm): This is also one of the important indicators of the quality of laminate flooring. This refers to the diameter of the floor under test under the same conditions, after the impact of the steel ball impact. The smaller the value, the stronger the impact resistance of the product. Among these indicators, the most important and most important indicators that directly explain the quality of the floor are: water absorption thickness expansion rate, surface impact resistance, static bending strength and wear resistance. Consumers should have a detailed understanding of the technical indicators and testing indicators of various brands of laminate flooring, and comprehensively select and compare them.
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