Experimental hard POLYvinyl chloride (PVC) poster screen printing
Pre-press preparation
Proofing: computer printout
Film: computer designed printing pictures, poster color separation film, in addition to the text part of 7 solid background film, 1 hung film.
Mesh size :300-350 mesh, because of the part of the mesh, the mesh size is higher.
Ink: Plastic printing ink
Substrate :0.5 mm thick hard PVC (PVC)
Printing pad: Manual printing pad
Screen printing process
1 Select screen frame
Because there are gradation colored stripes in the design drawing, in order to achieve a better printing effect, 300-350 mesh is used in the selection of the screen, the mesh number determines the printing detail.
2 Apply photosensitive adhesive
The inside and outside of the silk mesh frame were covered with three photosensitive adhesives.
3 Network printing plate
Uv printing using the photosensitive glue ultraviolet irradiation light solid principle, design of black film parts keep out ultraviolet ray, so was not because ultraviolet light to design part, photosensitive glue not curing jams mesh, rinse rinse clean plate will be unset photosensitive glue, need printing design part can keep printing mesh, complete all the color plate printing production process all the same.
4 Printing background color
In order to test the effect of covering power of screen printing, a total of 24 pieces of the whole design are printed, each of which is a set of 12 pieces. One set is printed on primary color PVC, and the other is printed on PVC with silver background color. Finally, the color difference of ink of the same color on different background color is observed, so as to test the effect of covering power of screen printing.
5 Allocation of ink color separation printing
Mix the colors according to the proofing, in order from the bottom pattern printing.Dry one color block before printing the next 29 color blocks.Compared with other ways of printing, the selection of screen printing way, every color can control yourself to allocate, in the process of printing, like a painting full of fun, the process of the whole people to participate in the copy of their own design implementation, unlike commercial mass production, more like art with life, fully proved that the silk screen printing a lot of colors can be easily printed.The face of the characters on the left side of the design is semi-transparent. The light-transmitting ink applied to the dashboard printing of cars is used in the selection of ink to reduce the covering force and achieve the semi-permeable effect. Different inks can bring different textures and printing effects in the process of printing.
The screen printing effect of the gradient strip in printing also completely achieved the expected effect, which shows that the screen printing is also completely sufficient in the fine printing.
6 Cutting is completed
Finally, cut PVC edge trim size.To complete.