Eco-board: sandwich board with double-sided tripolymer noodles! Many of them are sandwich boards and low-temperature veneers for processing in small-scale laminating factories! Environmental protection is difficult to reach national standards! Quality aspect: sandwich board (commonly known as Blockboard and woodworking board) is a Plywood with solid wood core. It cuts logs into strips, splices them into cores, and processes the outer veneer. The stress of the whole board comes from thin two layers of outer veneer. The middle is joined by wood blocks, and the base material is basically not stressed, so it is easy to break and deform. 。 This kind of board mostly uses one or two years of Chinese fir as raw material, as long as the finger can cut the wood block, so the grip nail strength is several times lower than the national standard! Suitable for on-site wood work. Environmental protection: The only advantage of the eco-board is that the material is good-looking. It feels like all the pieces are made of wood. The name of the eco-board is also very nice. It also has the feeling of environmental protection. But if consumers see sandwich panel factory, they will never use this material. Most of the plates exceeding the standard are produced by small factories in mountainous areas. As we all know, the environmental protection standard of sheet metal is glue. The cost of environmental protection E0 and E1 glue is very high. Small factories will never use this kind of environmental protection glue. All of them use industrial glue, and the cost is relatively low. Therefore, almost all the large-scale brands in the national furniture market will not use eco-boards or Chinese fir boards. Before 2005, almost all newly renovated houses were built with sandwich panels, almost exceeding the standard! Since the rise of large-scale cabinet brand, the use of particulate board and medium-fibre board, rarely heard of environmental protection beyond the standard! The health hazards of formaldehyde include the following aspects: A. Stimulation: The main hazards of formaldehyde are irritation to skin and mucosa. Formaldehyde is a plasma toxic substance, which can bind to protein and produce severe respiratory irritation and edema, eye irritation and headache when inhaled at high concentration. B. Sensitization: Direct contact with formaldehyde in the skin can cause allergic dermatitis, stains, necrosis, and bronchial asthma can be induced by inhalation of high formaldehyde. C. Mutagenicity: High concentration of formaldehyde is also a genotoxic substance. Nasopharyngeal neoplasms can be induced by inhalation of high concentration in laboratory. Large core board is the main material for interior decoration and furniture manufacturing. Faced with the situation that formaldehyde emission from large core board is generally beyond the standard in the market at present, decoration enterprises and consumers are very concerned about how to choose and use large core board in order to ensure the quality of decoration and reduce indoor environmental pollution. Huahua reminds the general public to pay attention to when buying and choosing large core boards: See if it is a product of a regular manufacturer. We should check the trademark, address and anti-counterfeiting sign of the manufacturer. Second, look at the formaldehyde emission in the product test report. Generally, regular manufacturers have test reports, and the lower the formaldehyde test value, the better. Third, look at the appearance quality of the large core board. See whether the surface of the large core board is flat, warping, deformation, bubbling and depression; whether the core bar arrangement is uniform and neat, the smaller the gap, the better, whether the core bar has decay, fracture, wormholes, scars and so on. Generally speaking, the internal quality of the large core board with good appearance is better. See if it smells. If the wood odor of the large core board is fragrant, the formaldehyde emission is less; if the odor is pungent, the formaldehyde emission is more, or do not buy
