DYNO Mill puts Autotype on the right track

Citation

(1998), "DYNO Mill puts Autotype on the right track", Pigment & Resin Technology, Vol. 27 No. 1. https://doi.org/10.1108/prt.1998.12927aad.019

DYNO Mill puts Autotype on the right track

DYNO Mill puts Autotype on the right track

Autotype International of Wantage, Oxfordshire, uses a DYNO Mill KD25 to disperse custom-designed pigments for use in gelatine films. These films are specifically for the silk-screen and gravure printing industries.

"We bought the KD25 to bring previously contracted out work in-house," said Process Development Chemist, Marian Jelinski. "Apart from the financial benefits, it affords us immediate quality control. Once the machine parameters have been set, batch to batch consistency and quality is very good."

The KD25 is used for the dispersion of iron oxides and red, blue and green pigments. The iron oxide dispersions are based on a water soluble resin and glycerine system. The oxide powders are dispersed with the help of an anionic dispersant to achieve optimum colour strength and dispersion quality.

The red, blue and green pigi-nent dispersions are based on pigment press cakes with an anionic dispersant in water. In all cases, non-volatiles are approximately 30 per cent and to achieve optimum performance the mill is used with Glen Creston's zirconium oxide beads, 0.8-1.0mm, at a loading of 85 per cent. To achieve the required colour strength and transparency, the throughput is usually 50-100kg per hour.

Yearly output is approximately 15 tonnes, the batch sizes varying between 250kg and one tonne in size.

Details from Glen Creston Ltd, 16 Dalston Gardens, Stanmore, Middlesex HA7 1BU. Tel: 0181 206 0123; Telefax: 0181 206 2452.