First, because the pre-coating film coating process does not produce any harmful substances, the pre-coating film coating process is more environmentally friendly.
Second, the pre-coating film coating process is simple, and there is no need to mix the glue like the instant coating film process before production. There is no need to control the amount of glue applied during the production process, and there is no need to dry the adhesive. Only need to control the temperature, pressure and speed, the shutdown processing is relatively simple, and there is no need to clean the gluing mechanism.
Thirdly, there will be no bubbles, wrinkles, peeling, etc. during production, so the quality of laminated products is higher.
Fourth, it has a wide range of applications for laminating equipment. Pre-coating equipment or coating equipment can be used, and plastic packaging equipment can also be used.
Fifth, since there are no combustible substances such as organic solvents during the pre-coating process, it can effectively prevent the occurrence of fire accidents during production and has a higher safety factor.
Sixth, high production efficiency.
Why the instant coating method is still widely used in the country. Although the comprehensive performance of the pre-coating method is better than that of the instant coating method, in terms of the current status of the domestic coating industry, most domestic companies The coating process is still widely used. The main reasons can be summarized into the following aspects.
First, the pre-coating film coating technology started relatively late in China.
Secondly, the production of pre-coating film has high technical content, complicated process, and large equipment investment. General enterprises cannot afford to invest in pre-coating film production line.
Third, due to China's surplus of labor resources and low labor costs, material costs account for a large proportion of the overall cost of the coating process. The cost of the pre-coated film is higher than that of the coated film, which will inevitably affect its application.
Fourth, most of the equipment produced by domestic laminating equipment manufacturers is that of coating laminating equipment.
Fifth, although the Chinese government emphasizes the environmental protection of the industry, the laws and regulations specific to the film industry still need to be improved.