How should traditional adhesive enterprises respond to the “aldehyde free” orientation in the era of environmental protection?
October 27, 2021 source: Bojun media
Nowadays, the green environmental protection upgrade war of “aldehyde free addition” has begun. Environmental friendly adhesives are increasingly recognized and favored by the market, gradually become the mainstream of adhesive products, and receive extensive attention and attention. They have broad prospects in the future. Environmental friendly adhesives will become the core of green customized homes.
1、 Prospects and disadvantages of environmentally friendly adhesives
Environmental friendly adhesive is aldehyde free adhesive. According to the chart of China’s Wood-based Panel Industry Report in 2020, soybean protein based adhesive and isocyanate adhesive increased year by year from 2015 to 2019, which shows that the market demand for environmental friendly adhesive is huge. The advantage of formaldehyde free adhesive * * is that there is no formaldehyde addition, and the formaldehyde emission of wood-based panel is very low. At present, the common types of formaldehyde free adhesive in the market include protein adhesive, EPI adhesive, isocyanate adhesive and thermoplastic adhesive film.
These formaldehyde free adhesives have some problems to be solved. For example, due to high protein, the plate is prone to mildew, including low colloidal solid content, which is easy to cause bubbling in plate production; The cost of EPI adhesive is too high, and the requirements for temperature, humidity and opening time are relatively high; Isocyanate adhesive is easy to stick to steel plate by hot pressing, which requires a large amount of release agent. The price of isocyanate is high and fluctuates greatly, which greatly increases the cost of wood-based panel manufacturers; The cost of thermoplastic film is too high and the process conditions are complex. The hot pressed plate should be naturally cooled by cold pressing, which affects the whole production efficiency to a certain extent.
2、 New national standard promotes the development of environmental friendly adhesives
The market recognizes aldehyde free adhesive, but due to the shortcomings, it has not been broken and the two advantages of traditional adhesive. The traditional adhesive * * has the advantage of performance. Most of the formaldehyde free adhesive wood-based panels are not as physical and chemical as the traditional trialdehyde adhesive. The production process of formaldehyde free adhesive wood-based panels is relatively complex and strict; Second, traditional adhesives have the advantages of low cost, rich material sources, good physical and chemical properties, mature and simple plate production process. Therefore, the current market is still dominated by traditional adhesives.
Now consumers have misunderstandings about formaldehyde and think that “no aldehyde” is equal to zero formaldehyde release, which is wrong. “No aldehyde” refers to no formaldehyde addition. Recently, the new national standard GB / t39600-2021 of wood-based panel, which has attracted much attention, was officially released and implemented on October 1 this year, further refining the grade classification of GB / t18580, which is divided into E0, E1 and aldehyde free. This upgrade conforms to the desire of consumers for environmental protection in the new era. It sweeps away all kinds of publicity chaos about the formaldehyde emission of wood-based panels in the industry, promotes the environmental protection upgrading of furniture upstream and downstream, and will eventually accelerate the survival of the fittest in the industry, which is better than high-quality enterprises and consumers, and is also the gospel of the development of environmental adhesive.
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