frequency of the electrostatic field applicant has determined that lower cycles provide faster flock weight accumulation and quicker lines speeds for certain fiber and adhesive combinations the operator would sample a preliminary run at 50 hz if the product characteristics are acceptable the operator would nonetheless lower the alternating field frequency until pile disturbance or other unacceptable product characteristic is observed the operator would then raise the frequency until the defect disappears production would then ensue at the last adjusted frequency which is lower than the starting frequency the foregoing procedure for adjusting the frequency is inherently subjective based upon the ability of the particular operator to gauge product quality it is also time consuming as it may require the operator to repeatedly halt production test samples and adjust the alternating electrostatic field frequency until an optimum frequency is found uniformity in processing can be achieved by having the operator refer to a pre recorded chart containing the optimum frequency for frequently encountered precursor variables as well as desired flock material and beta gauge specifications combinations of some or all of the following influential precursor variables and flock material specifications are compiled together with the appropriate optimum frequency for such combinations fiber type fiber size quality of fiber scouring type of adhesive thickness of adhesive coating uniformity of electrostatic finish and desired pile density the pre determined optimum frequency may be derived from past production experience or by extrapolation from previously determined optimum frequencies for similar variables prior to the flocking operation the operator makes the necessary measurements or examinations of the precursor materials and then uses the chart to determine the range of frequencies which will optimize product quality and or processing for the particular variables being encountered the production starts with.