1. Dry film-covered dry film coating process adopts environmentally-friendly BOPP film as a composite material, which has high coating quality and no pollution, simple equipment structure, convenient operation, high production efficiency, waste composite products in 60oC slurry water It can take advantage of the separation and recycling of paper/plastic separation and disassembly. It is adapted to the requirements of exquisite, green, and aseptic processing in the 21st century. It conforms to the IS014000 series of international standards for environmental management and has broad prospects for development.
2. In addition to the prevention and improvement of adhesion and adhesion of the equipment during wet operation, the wet film-covered wet coating process continues to improve to make it truly non-toxic, odorless, and non-polluting. , Fast drying, strong adhesion, high toughness, strong adhesion, good weather resistance and recyclability.
According to the different materials and equipments, the coating film can be divided into a coating type coating and a precoating type coating. Actually, two kinds of laminating technologies are currently popular on the market: solvent-free hot-melt adhesive pre-coating film dry-type composite technology and emulsion-type adhesive that is adhesive-coated wet composite technology. They are representative processes of dry and wet lamination.
1. That is, the coating type coating film or coating film has many preparatory work. The first is the solvent and solution preparation, so that it is fully mixed, then the temperature of the bake machine drying tunnel is increased, and then the wind speed and temperature in the drying tunnel are adjusted. , Air volume and the pressure and temperature of the lamination roller, after the data is determined to be correct, the lamination is performed. After the lamination is completed, a thorough cleaning with alcohol is required. The process is cumbersome and requires more control and mastery of technical parameters.
2. The pre-coating type laminating film has simple preparatory work and does not require the preparation of solution. It is not necessary to increase the temperature of the drying tunnel and it can be directly laminated on the lamination roller. Only the pressure, temperature and speed of the lamination roller can be adjusted. Can operate. The process operation is simple, the technical parameters that need to be controlled are less, and after the lamination task is completed, the power can be turned off and off.
In addition there is a new type of environmentally friendly film coating is water film. The water-based film belongs to the cold heading process, and its process operation complexity is between that of the coating film and the pre-coating film. It does not need to dry the baking path, and it does not need to raise the temperature of the pressing roll. What needs to be controlled is the recoating speed and the coating speed. The combined pressure, as well as the size of the sizing, can be cut in 15 minutes after winding. After the filming task is completed, clean it with clean water.
The film has excellent heat sealing performance and excellent transparency, is one of the main packaging composite base materials, used in the production of high-temperature boiling film, vacuum aluminum coating film, the market is very optimistic.Moreover, with the development of domestic production equipment, some of the technical indicators have reached the international advanced level.As a result, the threshold to enter the film production is lower and lower.Because of this, some enterprises rush to import the flow of film production line in order to reach the designated position, the higher the level, the better, while leaving the market demand and the return on investment aside, which will cause huge waste of resources.
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