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Ocena integralności objętościowej, profilu powierzchniowego i gęstości właściwej przędz

Lewandowski S., Józkowicz I.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

2017

nr 4

24--30

The article assesses the yarn bulk integrity, yarn surface profile and specific density of yarns. It has been found that the yarn bulk integrity is mainly dependent on the spinning technique used directly affecting the length distribution of fibers in the yarn. In turn, the distribution of fibers in the yarn can have a significant impact on many properties of yarns and fabrics, such as life, dimensional stability of the fabric, the appearance of yarn, yarn strength and coverage of the fabric. This article also characterizes the surface profile of the yarn stating that it can be described by three basic parameters, namely the general appearance of the surface of the yarn, the integrity of the surface and the surface of inequality. The third important factor in characterizing the structural features of the yarn accepted for consideration was its density. The use of linear density to express thinness, tenderness of yarn allows a comfortable and practical characterization of this important feature. All spinning machines used to process the fibers into yarn are based on knowledge of the linear density of the fiber assembly.

Włochatość przędz w aspekcie procesu ich wytwarzania i właściwości fizycznych oraz wyglądu i cech użytkowych gotowego wyrobu

Lewandowski S.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

2016

nr 11

27--34

The article concerns the assessment of the phenomenon hairiness yarn, and the factors affecting its formation and negative impact hairiness on the operation of technology used in the spinning process. The article presents the impact of the nominal physical properties of yarns, selected operating parameters of spinning and spinning techniques, selected physical properties of the fibers and the type of yarn on the of hairiness yarn. It was found that the yarn hairiness increases with the increase of the participation of short fibers in the raw material decreases with an increase in the number of twist, it is larger for the thick yarns, and a smaller yarns with thin yarn hairiness increases from the tip of the spinning cops to its base. It was also found that the hairiness of yarn affects not only the efficiency of processes, but can also be reflected in the functional properties and appearance of finished products.