FIELD: technological processes.
SUBSTANCE: invention is related to method for uniform stretching of thermoplastic film with according adjustment of thickness of film subjected to stretching, and imparting desired mechanical properties to it. Cooling roller, for reception and cooling of cloth to produce film works at circular velocity (V1) and at temperature (T1). The second roller, for film reception at temperature (T2), works at circular speed (V2), which exceeds mentioned V1. Spacing of the second roller from cooling roller is carried out to arrange interval between rollers that does not exceed one inch, for film stretching. Uniform stretching of film in mentioned interval between rollers at stretching temperature in the range between T1 and T2 and at speed in the range between V1 and V2 with production of stretched thermoplastic film that is characterised by mostly uniform thickness.
EFFECT: creation of improved method of uniform film stretching with savings on capital investments and operational costs, but production of high quality products.
68 cl, 14 dwg, 9 tbl, 7 ex
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