Modern Express News (Reporter Jiang Nan Text/Photo) As consumers' requirements for home decoration continue to increase, the types of related products in the home decoration building materials market have become more and more. How to choose the right home decoration materials? On October 27, the Nanjing Municipal Market Supervision and Administration Bureau held a 2022 annual city-wide home decoration building materials product quality supervision random inspection results, and announced the results of quality supervision random inspections of home decoration building materials products such as mattresses, children's furniture, paint-free boards, latex paint, faucets, etc. At the press conference, relevant experts also gave reminders on the problems existing in home decoration and building materials in the market to help consumers avoid pitfalls!
△ At the press conference,
Mattress: The pass rate of mattresses below 1,500 yuan is relatively low
In this inspection of the mattress, a total of 30 batches of products were selected. After inspection, the pass rate is 96.7%. The unqualified item is the physical properties of the padding material (soft polyurethane foam).
According to the standard, the tensile strength of the padding material physical properties (soft polyurethane foam) should be ≥80kPa, but the tensile strength detection value of the unqualified samples in this random inspection is only 57kPa. Dai Minhui, chief inspector of the Building Materials Center of Nanjing Quality Inspection Institute, introduced that the padding material is a padding material between the spring mattress sewing layer and the spring core, and is an important part of the mattress. If the configuration and sewing process are not in place, the mattress will feel "fault" and affect the overall comfort and durability of the mattress.
Dai Minhui reminds consumers that when purchasing mattresses, it is best not to buy products that are too cheap. Mattresses under 1,500 yuan are relatively low. Secondly, you can choose a mattress by trying to lie down. Generally speaking, after lying flat on the bed, first feel the support force of the mattress on the neck, shoulders, and buttocks. Secondly, see if you can let go of your waist. If the waist naturally fits the bed surface and cannot put your hands in it, it is a better mattress. Finally, consumers can lie on the side of the bed to see if the support beside the bed is stable. It is worth noting that if consumers want to buy mattresses containing brown mattresses, it is best to open the mattress when purchasing and check the materials used for the internal brown mats to avoid purchasing chemical adhesive-bonded brown mat products. At the same time, pay attention to the quality of auxiliary materials such as felt pads and padding materials. It is best to open the zipper lock when purchasing and check the internal materials.
Children's furniture: All solid wood, products treated with a small amount of varnish are relatively safe
Children's furniture refers to furniture products designed or scheduled for children aged 3 to 14 years old. With the rapid development of the economy, many children have their own separate rooms, so the market demand for children's furniture is increasing. A total of 30 batches of children's furniture products were selected. After inspection, 28 batches passed, with a pass rate of 93.3%. The unqualified items were structural safety (other) projects, hazardous substances limited amount (formaldehyde emission) projects, and warning label projects.
Zhang Yuguo, chief inspector of the Building Materials Center of Nanjing Quality Inspection Institute, told the Modern Express reporter that structural safety is an important part of children's furniture that is different from adult furniture. Children's furniture should not only consider its normal use function, but also the hidden dangers of physical harm that children's furniture may cause to children during their daily lives and play. In this random inspection, two batches of structures failed to meet the safety of the two batches, mainly manifested in: high tables and cabinet products with a height of more than 600mm, did not provide connections to fix the products on the building, and the installation method was not specified in the instructions for use. In addition, GB 28007-2011 " General Technical Conditions for Children's Furniture " (hereinafter referred to as "General Conditions") requires that the product formaldehyde emission is ≤1.5 mg/L, but the actual measured value of products that failed the random inspection of this project reaches 9.4 mg/L. It is worth noting that the "General Technology" has strict regulations on warning signs. For example, the applicable age group must be marked in the instructions for use, namely "3 years old to 6 years old", "3 years old and above" or "7 years old and above"; if there are installation requirements, the product requirements are marked: "Note! Only adults are allowed to install, and children are not approached", etc., but this random inspection found that a batch of products was not marked as required.
Zhang Yuguo advises consumers that when purchasing children's furniture, it is best to choose furniture products that are less decorated or even not painted. Children's furniture that is fully solid wood and with a small amount of varnish are relatively safe.In addition, in order to ensure the safety of children, you should carefully observe when purchasing whether the edges, tips or protrusions that can be touched have been rounded; whether the holes and gaps on the product are at risk of placing the child's fingers. Zhang Yuguo also pointed out that children are active by nature and like to climb. When purchasing cabinet-type children's furniture, you should also pay attention to whether its stability is good enough. You can use hand shaking to determine whether there is a risk of dumping, and avoid buying products with poor stability. It should be noted that the General Technology stipulates that high tables and cabinet products with a height of more than 600mm should be provided with connectors fixed to the building, and the installation method should be clearly stated in the instructions for use to avoid overturning and damaging children.
paint-free board: The product quality can be judged from the appearance and cross-section
paint-free board is also called melamine board . A total of 20 batches of samples were drawn in this inspection. After inspection, 18 batches passed, with a pass rate of 90%. The items that failed this supervision and random inspection are mainly: internal bonding strength, water absorption thickness expansion rate and surface cigarette burn resistance.
Wang Xiangjie, chief inspector of the Building Materials Center of Nanjing Quality Inspection Institute, said that when consumers choose paint-free boards, they can judge the quality of the product from the appearance. The surface of high-quality paint-free boards should be smoother and have no obvious defects such as woven (carbonization points), marks, cracks, cracks, etc. You can observe the 45-degree angle on the paint-free board side under better light. If you see small pieces that are not smooth on the board surface, it means that there is carbonization on the board. Generally, the fewer carbon spots, the better the quality of the board. At the same time, the quality of the board can also be judged from the section of the board. If the inferior board is spliced with mixed wood, there will be many black spots on the cross section and the layers are not clear, so you must not buy it.
latex paint: Cheap products can easily reduce the wall's rubbing resistance and washing resistance
The products inspected this time are mainly synthetic resin emulsion inner and outer wall paint, commonly known as latex paint. A total of 40 batches of samples were drawn. After inspection, 36 batches passed, with a pass rate of 90%. The unqualified items were scrubbing resistance projects, comparison rates projects and formaldehyde content projects. Among them, the scrub resistance reflects the density and powder resistance of the surface of the latex paint film. Zhao Xiaojia, chief inspector of the Building Materials Center of Nanjing Quality Inspection Institute, said that in order to reduce costs, some companies choose low-quality emulsions or reduce the amount of emulsion added to produce emulsion coatings, which will cause the coating to be easily scratched and damaged.
Zhao Xiaojia reminds consumers that the latex paint on the market is one or two hundred cheaper and one or two thousand expensive. The price difference lies in the ratio of various ingredients. The filler content of cheap latex paint accounts for too high, which can easily reduce the wall's rubbing and washing resistance. Therefore, you should try your best to buy brand products and not be greedy for cheapness. In addition to price, consumers should also pay attention to checking the inspection report of coating products, focusing on indicators such as comparison rate, alkali resistance, construction properties, VOC content and formaldehyde content. When using latex paint, stir well. It should be used up in time after opening the bucket to avoid affecting the performance after long-term placement. If you need to apply it multiple times, apply it a second time after drying. Unused latex paint should be sealed and stored.
faucet: Avoid buying zinc alloy faucet
This time, a total of 30 batches of faucet products were extracted. After inspection, there were 25 batches of qualified, with a pass rate of 83%. The unqualified items are items such as cold and cold water marking errors, surface corrosion resistance, pipe thread accuracy and metal contaminant precipitation lead precipitation. Wang Xuan, chief inspector of the Building Materials Center of Nanjing Quality Inspection Institute, introduced that after the faucet with unqualified corrosion resistance on the surface will have "papergreen" and black spots or corrosion on the surface after use, and metal ions or breeding mold will be produced after corrosion, which not only affects the appearance, but also is not good for physical health.
Wang Xuan reminds consumers to avoid buying zinc alloy faucets. Wang Xuan said that the faucet of zinc alloy has poor texture and its coating has poor corrosion resistance. If it is directly in contact with water for a long time, it will easily be corroded, affecting the normal use of the faucet. Consumers can judge whether the purchased product is a zinc alloy faucet by observing whether the product is smooth and has obvious dividing lines.When using a faucet, consumers should not switch it too hard. In addition, water contains trace amounts of carbonic acid compounds, which easily form scale after evaporation on the metal surface and corrode the surface. It is recommended to use a soft cotton cloth or sponge to scrub the surface of the water nozzle frequently. Remember not to use metal cleaning balls or cleaning cloths to clean it, as it can easily scratch the coating of the water nozzle surface.
