Colour collection – VPS / PR

Collection VPS

This series of unleaded colours is characterised by its low thermal expansion coefficient, which is specially harmonised for decorating borosilicate glass. The main field of application of these colours is the decoration of ampoules, syringes and bottles for the pharmaceutical industry, chromatography, and for chemical, laboratory and cosmetics requirements. Special applications for flat glass, such as the toughened safety glass process, must be tested on a case-by-case basis.

Firing range:

600-630 °C slow firing
630-700 °C fast firing

The average coefficient of thermal expansion of the base frit lies within the range of 50-300 °C at 56 x 10-7/°K and 64 x 10-7/°K.

VPS 1100 VPS 1101 VPS 2102 VPS 2101 VPS 3100
VPS 3130 VPS 4100 VPS 6100 VPS 7103 VPS 7101
VPS 9102 VPS 8100  VPS 7100 VPS 857

* individual monitor settings affect how the colour tone is represented.

Collection PR

The colours from the leaded PR series are suitable for decorating borosilicate glass. As with VPS colours, the main field of application of these colours is the decoration of ampoules, syringes and bottles for the pharmaceutical industry, chromatography, and for chemical, laboratory and cosmetics requirements. Special applications for flat glass, such as the toughened safety glass process, must be tested on a case-by-case basis.

Firing range:

620-640 °C slow firing
630-700 °C fast firing

The average coefficient of thermal expansion of the base frit lies within the range of 50-300 °C at 53 x 10-7/°K and 61 x 10-7/°K.

Whatever the application, the colours must always be tested beforehand on the glass that is to be used and under the production firing conditions. The harmonisation of the ceramic colour with the borosilicate glass to be used is heavily dependent upon the weight and thickness of the applied colour. To avoid any micro-fissures or flaking of the colours, they should generally not be applied too thickly.

It goes without saying that we can offer customised colour tones and developments for special applications and types of glass.