Plastic parts silk painting
The silk painting of plastic parts is one of the two-time mechanic (or reprocessing) of plastic products.
The so-called two processing is plastic products after injection molding, and then a surface decoration
treatment, such as plastic plating, plastic spraying, plastic hot stamping, plastic screen printing.
Plastic products so to carry out two processing, mainly by the properties of the plastic itself,
such as its relatively single dyeing, and the color of the sun-resistant is also poor.
In order to make up for these shortcomings, improve the appearance of plastic product decoration,
you need to do two times processing. Electronic products–screen printing of plastic parts of electronic
products, in particular, radio products such as radios, recorders, televisions, etc., for the appearance of the requirements are very high.
Plastic screen printing after the development of electronic products for the decoration brought convenience, so in recent years the domestic electronic products of plastic screen printing have been widely used. Screen printing of plastic signs in recent years, plastic signs and plastic
after the formation of silkscreen graphic characters of the decorative parts developed quickly.
such as in the PVC PCB (PVC board), polycarbonate, ABS, plexiglass, modified polystyrene plastic parts on the screen printing has been widely used and achieved the good decorative effect and economic benefits
Screen printing of soft and hard plastic parts
① Plastic Hose screen. There are several methods for the printing of plastic hose, the main method is
the thermal transfer printing method. Thermal transfer is the sublimation of dye inks or other materials, the
text will be printed on the transfer paper, and then with the substrate, from the back of the transfer
paper heating, so that the paper dye sublimation and graphics and text transfer to the substrate.
Plastic hose after surface treatment, transfer paper from the hose and a heated plate between the
passage, the heating plate will transfer paper to the hose, heating complete transfer printing. Transfer
the hose into the drying device, drying temperature is generally about 65 ℃.
② soft plastic silk screen. Soft plastic is used to make toys, such as inflatable cartoon toys. The production is usually first in the soft flake plastic screen pattern, then cut, hot-formed. The thickness of the material used is generally 0.8~3. 0mm. If the two colors above the screen
printing, most of the plastic will be telescopic, the second color and the first color of the chromatic error.
This chromatic error makes the product lose its original value and cannot be placed on the shelf as a qualified product. For this reason, multi-color printing can only be used to fix the soft plastic of the long printing presses and there is no other way. In the long stage of printing, the substrate to use adhesively fixed. Toy printing must use the relevant standard provisions of non-toxic, harmless ink.
③ hard plastic products. Hard plastic products have a hard plate and molded products two kinds.
Tickets, signboards, instrument dials, cosmetic containers are made of hard plastic.