Further processing

Coloring

TROGAMID^® is best colored with color concentrates based on identical TROGAMID^® resins. Dry coloring by tumbling with finely powdered pigments is another possibility but it is inconvenient, as pneumatic conveying is impossible. The use of color pastes or color concentrates having a "neutral" (e.g. PE) base can lead to incompatibility with TROGAMID^® and hence to poor part properties (poor weld line strength or low transparency due to clouding). Therefore, prior testing of compatibility is absolutely necessary.

Eyeglasses lenses

Lenses made of TROGAMID^® myCX can be tinted in dipping baths without a problem. The adhesion of the color system is so good that not even further mechanical processing will cause discoloring. This makes it possible to machine tinted lenses without trouble. The system also remains resistant to stress-cracks.

Printing

Most printing inks can be used for sublimation printing TROGAMID^® parts. Screen inks must be adapted for use with TROGAMID^® compounds.
Preparation of the surface by flame treatment, roughening, or corona treatment generally results in improved adhesion of the printing inks. Adhesion can also be improved after printing, by flame treatment or tempering.

TROGAMID^® TCR film

It is recommended that the TROGAMID^® TCR film be climatized under the conditions of the subsequent printing process so as to prevent changes in length. The surface can be printed directly with the recommended inks and needs no further pretreatment.

NoriAmid screen printing inks from Pröll KG are particularly suitable for printing. These inks have been specially designed for the film lamination technique with TROGAMID^® TCR films.