This paper describes a multiple regression model for calculating the thickness of mineral wool fibre manufactured on a double disc spinning machine. The aim of the paper was to set up a model which would allow process control of mineral wool production. Based on the selection of the key parameters that define mineral wool fiberisation and with the aid of dimensionless analysis, characteristic numbers were defined and a regression model was set up. Parametric regression model constants were determined from experimental results obtained on a real double disc spinning machine. Regression model results showed high correlation with the multiple regression coefficient r2 higher than 0.87. The multiple regression model developed can be further applied to multi-disc spinning machines.
