THE STUDY OF THE PHYSICO-MECHANICAL PROPERTIES OF FASHION TIGHTS COMPARED TO MEDICINAL TIGHTS

Abstract

The aim’s paper was to study some physico-mechanical properties for fashion tights and medicinal tights with compression degree 1 (ie 10-15 mm Hg), class 1, for the prevention of venous diseases of the legs. Tights made of PA (polyamide) and two-component yarns, polyamide, and elastane, with a fineness of 70 Den, were chosen for the study. For fashion tights, the yarn composition was 88% polyamide and 12% elastane, and for medicinal tights 85% polyamide and 15% elastane. The tights were made on circular knitting machines with small diameter, Merz, model CC4 II with a diameter of 4 ¾ inches, pitch 24 E, number of needles 360, for the average size, M (II) of the tights. Both types of women's tights were made in a jersey structure with weft yarns. The background yarns were 100% polyamide, and the weft yarns were elastomer yarns coated in two polyamide yarns to obtain a balanced yarn. Fashion tights are the common ones, and compressive tights are used to prevent incipient venous disorders of the legs, calming the sensation of pain or heavy legs. The experimental program included the study of hygroscopicity, the tensile strength in the direction of the wales, and the degree of compression at the ankle. The obtained data were analysed and presented comparatively.