Features of parameters of a pair of rolls.

The factors that affect the quality indices of a semi-finished leather product after squeezing out excess moisture are discussed. The results of the influence of changes in monshon (moisture-permeable technical cloth) properties on the squeezing process of a leather semi-finished product are given. It is shown that with an increase in time of operation, to maintain the required residual moisture, the pressing force of the working rolls must be increased as compared to the initial force. The thickness of monshons made of LASH cloth at the beginning of operation sharply decreases; in monshons made of the BM cloth, the residual strain is insignificant. The BM cloth is not much deformed as it is a denser fabric woven from wool, and its length along the perimeter is greater than the length of the LASH cloth coatings. It was stated that an increase in specific pressure after reaching a certain value slightly reduces the moisture content of the pressed material and the operation under high pressures is not advisable, because the substantial reduction in moisture content that can be obtained will not compensate for deflections, accelerated wear of the roll coating and an increase in the power consumption of electric motors. In addition, an increase in pressure between the squeezing rollers in the materials to be pressed (such as semi-finished leather) leads to an increase in the number of folds and wrinkles. [ABSTRACT FROM AUTHOR]