METHOD OF MECHANICAL SHRINKAGE OF TEXTILE MATERIAL Russian patent published in 2013 - IPC D06C21/00 

FIELD: textiles, paper.

SUBSTANCE: method lies in covering by the textile material of the heated cylindrical surface of the shrinking shaft and in contact with the branch of the rubber strap under load covering it in an arc. The load on the textile material in the area of its contact with the cylindrical surface of the shrinking shaft and the rubber strap is carried out by power amplitude phase-frequency influence with the power alternating frequency $$v=\frac{{\upsilon }_1}{l}+\frac{k\cdot A}{m\cdot {\upsilon }_2},$$ where v is the power alternating frequency, υ₁ is speed of movement of the textile material, l is pace of the weft threads, k=k₁+k₂ is the given stiffness coefficient of the system, k₁ is the stiffness coefficient of the belt, k₂ is the stiffness coefficient of the textile material, A is the amplitude of the power influence, m is the given mass of the system "shrinking shaft - loading mechanism", υ₂ is the speed of the power influence. The speed of movement of the textile material in the shrinkage area is maintained less than 2…6% of the speed of the textile material before the shrinkage area and after it. For influence on the textile material in the area of its contact with the cylindrical surface of the shrinking shaft and the rubber strap, the means for dynamic pulse loading is used, made in the form of an electromechanical transducer.

EFFECT: increased efficiency of shrinkage due to reduction of frictional forces between the threads in the area of shrinkage and in the area of the contact of the shrinking shaft and the rubber strap.

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