Nitrogen protection full UV curing technology in the printing industry
Routing and parameters
The printing material using UV ink in the gravure printing process is used to purify the surface of the printing substrate with oxygen-free gas before entering the drying zone, and dry it in an ultraviolet drying oven filled with protective gas N2 to prevent drying. During the process, the ink reacts with air to avoid adding antioxidants and reduce the use and emission of VOCs from the source.
Main Specifications
Nitrogen protection During the operation of all UV nine-color and nine-color gravure printing machines, the VOCs concentration in the workshop is up to 0.15mg/m3 without ventilation.
Technical characteristics
The use of UV curing technology solves the problem that UV inks cannot be completely dried on gravure presses; it not only reduces VOCs emissions, but also reduces the energy consumption of the drying process.
Scope of application
Printing of packaging materials such as tobacco, food, and pharmaceuticals.
Packaging and printing solvent-free composite technology
Routing and parameters
This technology uses a polyurethane adhesive to achieve bonding of different substrates by reaction curing. All the processes are completed at low temperature or normal temperature (35 ° C ~ 45 ° C); using multi-roll coating, the rubber layer is thin, and the amount of glue is only 1/3 to 1/2 of the solvent-type dry composite.
Main Specifications
Compared with solvent-based dry composite processes, VOCs have an emission reduction rate of over 99%.
Technical characteristics
The use of solvent-free adhesives instead of solvent-based adhesives avoids the use and discharge of VOCs from the source.
Scope of application
Flexible packaging printing and decoration, fabrics, leather composites and other fields.
Wood coating watering technology
Routing and parameters
Preparation technology of high performance polymer emulsion by using acrylic polyurethane copolymer emulsion (PUA) preparation technology, multi-crosslinking preparation of polyurethane aqueous dispersion (PUD) preparation technology and high performance polyacrylate emulsion (PA) preparation technology To achieve water-based wood coatings.
Main Specifications
High-performance polymer emulsions have a VOCs content of ≤50g/L; waterborne coatings have a VOCs content of ≤70g/L.
Technical characteristics
The invention solves the preparation of high performance polymer emulsion and the water-based replacement technology of solvent-based coating.
Scope of application
Wood coatings manufacturing companies and wood furniture manufacturing industries.
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