Regarding the topic of environmental protection glazing materials, Xuanlong Chemical Wang Weihua has the following instructions:
Traditional varnishes and coating adhesives are generally composed of organic solvents or film-forming resins. Because the coating adhesives contain a large amount of organic solvents, a large amount of organic substances need to be volatilized during the film formation process for curing, so they are highly volatile organic compounds. . Environmentally friendly varnishes have low or no volatile organic compounds. To achieve the above indicators, the paint must not contain too many volatile solvents, some even completely free of solvents. New environmentally friendly varnishes or film adhesives are produced by emulsion synthesis technology. Emulsion synthesis is made by using water as a medium through a special reaction synthesis process. Since water is an inorganic substance, it is non-toxic, odorless, volatile and non-toxic to human health and pollution during use or operation. atmosphere. Emulsion type and solvent type coating systems are different, and there will be some differences in the use of operation. Emulsion coatings use water as the medium, and the water content (more than hot melt) is higher, so the requirements for the drying equipment of the operating machinery will be higher.
Emulsion-based varnishes or film-coated adhesives have been developed to date, and performance indicators in all aspects are basically the same as solvent-based varnishes or film-coated adhesives, but the ease of use still needs time to improve. The main problem of traditional crude oil is the harmful substances. If you want to reduce these harmful factors, you must strengthen various environmental protection facilities, such as improving ventilation and installing harmful organic gas collection and processing equipment to reduce the impact on people and the environment. . The media that pollutes the environment during the treatment process must be handed over to the relevant media company to increase the cost of the plant in terms of equipment and environment, but the use of emulsion varnish can avoid this situation.
We believe that Hong Kong has a deeper understanding of environmentally friendly varnishes or laminating adhesives and is more acceptable. However, with the introduction of corresponding environmental protection regulations in China and the increasing awareness of environmental protection, Xuanlong has not encountered much difficulty in promoting products in China. As foreign environmental protection regulations become more stringent, customers' demand for environmentally friendly varnishes and laminating adhesives has increased accordingly, and we will invest more resources to develop products. In addition, we will provide customers with the most basic ROHS, REACH environmental standards and quality certificates. When designing environmentally friendly varnish formulas, we will strictly refer to the above two standards, and will not use the harmful substances listed at all. Unfortunately, there are some chemical products in China. The factory still uses banned raw materials for production.
In recent years, the amount of environmentally-friendly varnishes and environmentally-friendly coating adhesives used in food packaging, gift packaging, and book publishing has been relatively large. For the safety of food packaging, manufacturers will abandon the original solvent-based varnish and use environmentally friendly water-based varnish; and apply it to book packaging, also for safety reasons. Books are the objects of long-term contact in life. If the packaging contains harmful substances, it will penetrate into the body through the skin and affect health. Our recommendation to the industry is that when purchasing environmentally friendly varnishes and environmentally friendly coatings, you must obtain an environmental quality certificate from the manufacturer to prove that the products used fully comply with environmental quality standards.
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