The paper introduces the process of continuous furnish preparation,its measuring and controlling systems,the structure and hardware design of the whole system where the PLC is used as control unit.

In order to solve the problem of furnish preparation,this paper designs the Neural-internal model based optimal controllor for furnish preparation based on S7-400PLC.

According to a lot of test,contrastive and analytic method which compare a used sizing with different sizing,the test of size performance,sizing film and sizing quality about different sizing instruction,the optimized result of sizing instruction can be obtained to blended bamboo /cotton yarn,which have a little PVA of environmental pollution.

According to the test of sizing quality,it has been proved that excellent sizing instruction can meet sizing quality of towel.

The paper analyzes the influence of size formula on the cost and price of fabrics,and presents the economic analysis mdthod for size formula.

An image analysis method has been applied to study the effect of pulp ratio and the kind of fillers on printing quality of ink-jet printing paper.

Change of upgraded ore SiO_2 in Bayer process with dressing on influence analysis and controlling measure of slurry preparing;