Wet-heat treatment of parts and finished products must be performed under such temperature conditions that would guarantee the preservation of physico-mechanical properties of the tissues at a minimal cost of time and electricity. Modes wet-heat processing are set based on the properties of fabrics and equipment used. For temperature control irons and the press should have an automatic regulators (thermostats).
Heat-wet treatment of fabrics, carried out in the modes recommended TSNIISHP (table. 5), does not affect physical and mechanical properties of fabrics (strength, color, etc.).
The regimes wet-heat processing affect the appearance and structure of the fiber, and the methods of finishing fabrics; by changing these parameters it is necessary to clarify or develop new regimes for wet-heat processing.
Pure wool, cotton and linen can withstand the highest temperature of the heating surfaces, than a blended fabric containing a large percentage of chemical fibers.
In table. 5 shows the temperature of the Ironing surface by direct pressing or by Ironing fabric on the reverse side. When pressing or Ironing through protohellenic temperature of the Ironing surface may be increased to 10' C. If the wet-heat treatment changes the color of the fabrics and thermal shrinkage occurs, then the specified table. 5 the temperature must be reduced by 10 to 15' C. the time for performing the wet-heat treatment should be increased.
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