The electrical permittivity of the weaves obtained from natural cellulosic yarns or mixed with synthetic fibers was established with capacitor method. The highest value of relative electrical permittivity in case of the woven fabric from natural cellulosic fibers has been observed at the weave made of pure hemp (13.55) and the lowest at the weave obtained from the pure jute-weave packing (1.87). Electrical permittivity value of the pure jute weave packing is comparable to that of the permittivity for the glass thread, when the work conditions are as follows: temperature 25 ∘ C and air humidity 35%. The relative electrical permittivity of the weave is depending on the degree of crimping yarns especially in the weft direction, technological density in direction of the warp and weft, and surface mass of the weave.

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This paper contains a comparative analyse of the statistical spreading parameters for some quality characteristics of thin flax yams, 50 tex (Nm 20), 41.7 tex (Nm 24) and 38,5 tex (Nm 26) from hackling flax, produced by wet spinning from bleached roving. Thise analyse make it possible to take decisions in a very short time about the behaviour of these yarns in the following stages of processing and in use. The statistical values used for characterisation of qualitative parameters distributions of yarns investigated are the coefficient of asymmetry, the coefficient of vaulting and the coefficient of excess. These coefficients make it possible to analyse in detail the distribution in comparison with the normal distribution.The statistical analysis of the distribution flax yarns characteristics was made by the mathematical programme software proposed by authors. This project began with fibres characterization because yams strength and component fibres properties have a strong correlation.