Effect of Base and Emulsion Thickness on Dimensional Stability of Graphic Arts Films.

Dimensional stability of stable base films is better than conventional acetate type bases by a factor of 3-5 times, and these stable films give satisfactory size-holding performance in a wide variety of new semi-critical applications. However, shop temperatures and humidities must still be controlled with stable films when extremely precise size-holding or reregister requirements are specified. Dimensional performance of stable bases is discussed in terms of base characteristics and the thermal and humidity coefficients that can be used in the field to define required shop controls or predict film size changes with uncontrolled conditions.