Manufacturing process of imd electrical panel

The manufacturing process of imd electrical panel

Silk screen and ink

The inks used in IMD templates are mainly divided into negative color inks, window transparent inks and surface matte inks

The ink used in IMD requires certain characteristics:

Moldability: resistance during injection molding process; good coexistence with injection resin and sheet

In addition, it should comply with environmental protection requirements and contain no toxic heavy metal pigments. Numerous material and texture effects can be obtained through ink screen printing, including: basic colors-yellow, orange, red, purple, blue, green, brown, black, and white. Almost all colors can be obtained through the blending of high-brightness basic color transparent seasonings; Four colors-four-color inks and effects for IMD sheets;

Silver-basic silver, coarse silver, high-gloss silver. These silvers can be used to adjust other golden and metallic colors; special effect colors-metallic, flashing, jewellery, luminous, mirror effect, rainbow color effect, etc.

In the current process of imd electrical panel, after printing all the color inks and other patterns in sequence, a layer of BINDEF (adhesive) is always printed as a barrier (or protective) ink during injection molding. The high temperature to withstand. The ink is solvent-based. If the water-based adhesive is not compatible with water and oil, the oil-based adhesive is more suitable.

In the three stages of imd electrical panel products screen printing, molding, and injection molding, ink-related problems may occur, including the screen printing drying too fast, the screen printing pinholes or bubbles; the opaque effect is lost during molding or due to breakage. ; Ink washout during injection molding, insufficient adhesion with plastic, etc. Therefore, the manufacturer's experience and cooperation are very important.