Application of hydro dipping film & transfer sticker
Hydrographic ink dipping film is mainly used in water transfer printing process for large-area pattern effect . It is Widely used in metals , ceramics , electronic products printing and so on .
Transfer sticker is also called water sticker and watercolor printing , a new surface treatment craft , can replace kinds of other printing crafts such as pad printing , silk screen printing, thermal transfer and spraying etc . It is characterized by clear dots and steps , with fine tone fineness , and its film surface is soft , performance is stable , transfer sticker also can be used in large-area printing as well as its operation is convenient and simple .
Water transfer printing film printed knowledge
1. Reasons of drawing (knife line) :
- Scraper has gaps or its quality is poor .
- Ink particles is large or viscosity is too high .
- Scraper angle or pressure is unsuitable .
- Poorly polished or version roller chrome surface is rough .
- The plate roller is slightly flat , the ovality is too large , or dynamic balance is not good .
2. Solutions of drawing :
- Check if there is any gap of scraper , using sandpaper to grind scraper or replace a new one .
- Filter the ink to reduce larger particles .
- Polished the surface of plate roller with sandpaper .
- Check the slightness, ellipticity and dynamic balance of the plate roller .
- Re-polished or chrome plating again .
3. Net (moire) cause : ink viscosity is not suitable .
Solution : when a solid version and another web version print the netting , it is generally that the ink in the field version is too thin and the ink layer is not thick enough .
4. Rippling occurs : printing ink fluidity is bad .
Solutions :
- Increase the viscosity of ink .
- Increase the printing speed .
- Correct the printing tension .
5. Same mesh has different color : two-color and multi-color plate net line and net corner are exactly the same and some dots are completely coincident during printing , some of the dots are staggered , resulting in inconsistent visual coloring . Gray , purple , brown and spot color superimposed of similar meshes are easy to produce same mesh-shaped color shift .
Solution : enhance the overprint accuracy .
6. Dots occur : Due to the fluidity of the ink itself, when the 65-80 mesh is printed , some of dots are connected together , but others are not connected together , causing an uneven printing with serious hue such as dark purple , brown , dark green , deep red , etc .
Soultions:
- Choose a better ink .
- Adjust viscosity of ink .
- Correct angle of scraper or presuress .
- Enhance the printing speed .
Printing plate quality problem
Plate roller is important in the process of hydro dipping , many times the plate roller defect can not be adjusted by operation , the following summarizes the common quality problems of the plate and the relative solution .
- Blocking (plugging net) Causes :
- The ink is dry too fast .
- The mesh pit is too small , causing the ink can not easy to transfer .
- The inner wall of net pit is not clean and smooth .
Solutions :
- Change a slow-drying solvent .
- Increase printing speed .
- Lower the viscosity of ink .
- Clean the plate roller after finishing water transfer printing from hydro dipping equipment .
- Check whether the hair dryer blows the wind onto the plate roller .
2. Corrosion (chrome falling) causes :
- Plate roller is dirty .
- Plate is subject to friction or extrusion .
Solutions :
- Use solvent to clean the surface of plate roller in time after hydro ink dipping .
- Clear up the plate with clean soft cloth , and do not leave fingermark .
- Applying low-volatility light oil on the surface of plate roller uniformly , but please do not appying with used engine oil . Of course , special anti-rust oil is better .
- Use a film (such as a waste film , make sure the ink is facing outwards) , to wrap the oil-coated plate , wrap it in corrugated paper , stand it upside down or use a shelf to keep it in a ventilated , dry and save it in a storehouse avoiding shining directly .
- Do not arrange the warehouse on the first floor , and keep away from acids , alkalis and other items .
Tsautop is a professional hydro dipping equipment & blank water transfer printing film & hydrographic dipping film supplier from China , providing quality verious pattern film for our clients choosing , you always can find your favourite film . In other words , if you perfer your pattern designing by youself to our available film pattern , we also offering personalized customized service for you through our blank hydro dipping film . Of course , if you have any question about hydrographic film printer or hydro dip film , please feel free to contact us by email : dasochan@tsautop.com .
