The zero-tariff era has not ended, imported furniture, swollen face, fat

With the continuous improvement of living standards, people's awareness of environmental protection is increasing. The smell of furniture has become one of the most concerned environmental issues. Today, commercial disputes caused by the smell of paint are common in the solid wood furniture industry. According to relevant data, furniture smell complaints accounted for more than 50% of the total complaints in the furniture industry. The heavy smell of furniture is a big problem that plagues owners and furniture manufacturers. So how does the smell of furniture come about? How can I eliminate it? The smell of furniture is mainly derived from the production materials - plates, adhesives and paints. The wood-based panels in the plates release more formaldehyde; the organic solvents used in the adhesives produce irritating odors; the residues of solvent-based paints are volatile.

The size of the furniture odor depends on the amount of formaldehyde in the material being produced.

1. The plates used in modern furniture mainly include solid wood and wood-based panels. The formaldehyde content of the wood-based panels is significantly higher than that of solid wood. Solid wood is an ideal environmentally friendly material for furniture. However, due to the growing shortage of forest resources, more and more furniture manufacturers are beginning to use composite materials instead of solid wood materials for furniture manufacturing. The main raw materials of wood-based panels include MDF, particleboard, melamine, etc. These materials can be combined with the skin and sticker technology to achieve the effect of simulating solid wood. The state has strict regulations on the formaldehyde content of wood-based panels. The latest standard GB/T11718-2009 stipulates that the formaldehyde content of artificial board is ≤8.0mg/100g. This is very close to the standards certified by the US CARB (California Air Resources Board). It can be seen that the fact that formaldehyde is contained in wood-based panels is an undeniable fact.

2. The adhesive is mainly synthesized from organic raw materials. Some adhesives contain free formaldehyde, such as urea-formaldehyde glue. However, the amount of adhesive used in the wood-based panel is large, which inevitably causes the sheet to contain formaldehyde. Some adhesives use organic solvents, which inevitably add to the pungent smell of the furniture. Therefore, the country has corresponding national standards for adhesives. In GBl8583—2008, the free formaldehyde content is ≤0.5g/kg, and the toluene and xylene content is ≤150g/kg. The smell and harm of adhesives are also a problem that cannot be ignored by furniture manufacturers.

3. Coatings for furniture coating are divided into solvent-based coatings and water-based coatings. Solvent-based coatings contain a certain amount of different types of organic solvents, so furniture using solvent-based coatings inevitably carries organic solvents during the coating process. The residual odor. This odor is completely eliminated only after the solvent-based coating is completely dry. Under normal circumstances, the use of solvent-based paint after the final process must be completed, must ensure a certain amount of time to dry, especially PU paint drying time needs to be more than 24 hours, if using drying equipment, at 60 ° C Under the left and right temperature, drying for 4-8 hours, the effect is better. However, in the actual production process, some furniture manufacturers in order to ship as soon as possible, shorten the drying time after the paint construction, packaging and shipping when the paint has not dried out, it is easy to cause furniture smell.

Furniture companies can only effectively reduce the smell of furniture by selecting coatings that meet national standards and processing according to the formal process. It is unavoidable to contain organic solvents in solvent-based coatings. The inability of the solvent to completely evaporate is the main cause of the high odor of the furniture.

In order to better meet the needs of customers, Zhanchen Coatings Co., Ltd. independently developed and utilized polymer synthesis technology to introduce a series of transparent scent primers with Jingwei Jierun series of topcoats. The characteristic of the net odor product is that the solvent release property is good, and the odor is not odor after 12 hours of construction, and the drying speed is fast, the scorpion is not easy to be collapsed, the primer is not easy to collapse, and the topcoat feels smooth, which is very suitable for suites, hotels, etc. Use at the place. Waterborne coatings have low levels of hazardous substances. The Standard for Waterborne Coatings for Environmental Labeling Products Technical Requirements stipulates that the content of volatile organic compounds in waterborne coatings should be less than 250g/L; the compounds containing heavy metals should not be artificially added during the production process, the total content should be less than 500mg/L; the added formaldehyde The polymer content of its formaldehyde should be less than 500 mg/L. In order to reduce the smell of furniture, materials such as paints and adhesives must be developed in the direction of water-based.

Countries have imposed restrictions on solvent-based coatings and are promoting water-based coatings. Since 2005, China has no longer approved new solvent-based paint manufacturers, and some well-known furniture factories have successfully applied water-based paints to furniture. As a trend of future coating development, water-based coatings have been widely recognized by the industry for their environmentally friendly and low-odor properties. It is believed that with the wide application of water-based paints, the environmentally-friendly furniture that the majority of furniture companies admire will become the mainstream products in the market.