(I. Overview
Concept: The full name of the simulation surface water drape transfer, the entire surface of the substrate to be decorated, the original face is covered, the entire substrate (three-dimensional) decorative printing.
Principle: The specially processed polymer film is printed on the Yang Yin machine and placed in the water tank. After flattening and activating, the pattern is evenly coated on the surface of the watermark using the principle of water pressure. This printing process is called printing technology. A revolution in the country, domestic research and development and industrial production is only nearly a decade.
(B) Water drape transfer process
1. Transfer printing film
The desired graphic is printed on the polymer film by gravure printing.
2. Primer
Spray different colors on the substrate as needed, such as: small lines - often use brown, earth yellow; stone - white
3. Membrane extension
Transfer the image of the transfer film upwards and flatten it in water until it is flat.
4. Membrane activation
The activator is sprayed evenly on the surface of the graphic, so that the graphic activation is separated from the base membrane in a free state. The activator is an organic mixed solvent that dissolves the base film quickly without damaging the layer.
5. Transfer printing
By placing the substrate close to the activated film, the graphic layer will be slowly transferred to the watermark. Pay attention to the water temperature and the transfer speed should be uniform.
6. Washing
Take out the substrate, clean the residual film and floating layer on the special cleaning machine, pay attention to adjust the water pressure.
7. drying
Should be carried out on a dedicated dryer, temperature and speed should be adjustable and controllable.
8. Spraying protective film
Solvent-based varnish must be mixed with hardeners and different substrates.
(3) Water drape printing film
1. Water drape transfer film production method
Similar to the production process of the thermal transfer film, the water drape transfer film is formed by a gravure printing machine using a conventional printing process to print a pattern on the surface of a water-soluble polyvinyl alcohol film.
Gravure printing machine with precise tension automatic control system, can print out 4 to 8 colors at a time, high overprinting accuracy, gravure water coating transfer printing film use simulation curved surface water transfer printing ink compared with traditional ink, water resistant Good sex.
2. Drying after transfer of water drape transfer film
(d) The drying method is volatile drying.
3. Water drape transfer film features
The water-draping transfer film has a very high expansion rate of the coffin material, and it is easily attached tightly to the surface of the object. This is the main reason why it is suitable for transferring the entire surface of the object. However, it is also obvious that the stretchability has a great disadvantage. That is, during the printing process, the graphic of the film is easily deformed, followed by the transfer process towel. When the flexible graphic carrier is completely in contact with the substrate, stretching deformation is inevitable.
Therefore, it is difficult to realistically transfer the graphic image transferred to the surface of the object. In order to avoid this shortcoming, we often design the graphics on the water drape transfer film to be small and have a specific shape. After deformation, it does not affect the ornamental repeat pattern.
Disadvantages: The transfer film used for the three-dimensional transfer is difficult to perform transfer copying of fine text and gradation patterns.
(5) Scope of application of water drape transfer technology
1 automotive technology such as: steering wheel, dashboard, door handles and other interior trim.
2 household appliances industry such as: air humidifier, refrigerator, audio and so on.
3 days with boutique: luggage decoration, inserted pen holder, desk calendar, hair ornaments, makeup boxes, art photo frames.
4 communications products such as: mobile phones, telephones and so on.
5 building decoration industry. Such as: doors, decorative panels and so on.
6 stationery gift industry. Such as: alarm clocks, wall clocks, missing parts, crafts, etc.
7 computer industry. Such as: mouse, printer, speakers, chassis and so on.
8 furniture industry. Such as: high-grade imitation wood grain furniture, imitation wood grain plates and so on.
9 other industries. Such as: instrumentation, sports equipment, shoe supplies: shoe soles, shoe uppers, upper parts and so on.
Mechanically speaking, as long as the surface can spray paint on the object can be water drape and transfer, now mainly used for plastic (ABS, PP, PET, PVC, nylon, etc.) surface imitation wood grain, imitation marble decoration, artificial wood Surface imitation natural wood grain decoration, color steel plate decoration, ceramic decals and so on.
In a word, the drape simulation surface water drape transfer technology is a wider application technology.