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1

Wicking Behaviors of Ring and Compact-Siro Ring Spun Yarns with Different Twists

Lu Yuzheng, Wang Yang, Gao Weidong

Autex Research Journal

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2019

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Vol. 19, no. 1

68--73

EN

In this study, the wicking properties of ring and compact-siro ring spun staple yarns were compared. The twist level, which is related to the structure of the staple yarns, was found to significantly influence the wicking property of the two kinds of yarn. Polyester staple fibers with 1.33 dtex × 38 mm were selected as the staple fiber material, and the effect of the twist level on the wicking property was investigated using the capillary rise method. The results show that with a decreasing twist coefficient, the wicking height increases with a decrease in yarn compactness. The compact-siro spun yarn showed better wicking properties owing to it special ply yarn structure. Furthermore, the tension property of the yarns decreased significantly with a decrease in the twist coefficient. Compact-siro spinning was carried out to obtain staple yarns with lower twist coefficients, and the yarns showed great improvement in terms of yarn strength, fiber straightness, and wicking properties. Thus, compact-siro spinning is an efficient method to improve the wicking properties of staple yarns.

2

Linking Yarns from Staple and Filament Fibres by High-Efficiency Pneumatic Interlacing. Part 2, Analysis of Hairiness, Number of Faults and Estimation of the Linking Effects

Ankudowicz W., Dopierała H., Radom C., Swaczyna P.

Fibres & Textiles in Eastern Europe

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2008

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Vol. 16, no. 2 (67)

18--22

EN

Part II of this article is a continuation of the one presented in Fibres & Textiles in Eastern Europe, No. 1/2008. Part I outlined the innovation of a method of linking yarns by pneumatic interlacing in relation to filament – staple yarns, as well as only staple yarns. The method, the techniques, and the equipment used, as well as the factors selected for estimation of the linked yarns were presented in Part I together with an analysis of the influence of the parameters on the tensile strength properties. In Part II linked yarn parameters, such as hairiness, the unevenness of linear density, the number of faults, and interlacing cohesiveness were analysed. The investigation indicated the dependence of all the process parameters tested, such as the speed and pressure of the air, the construction design of the entangling nozzles, and the properties of the component yarns used, on the linked yarn properties. The initial research carried out indicated the chance of using the highly-efficient technique of pneumatic interlacing as a new means of linking filament and staple yarns, and confirmed the need of further research in this field

PL

W Części II publikacji zaprezentowano wyniki badań włochatości i liczby błędów przędz filamentowo – staplowych łączonych techniką sczepiania pneumatycznego oraz ocenę efektów połączeń w oparciu o opracowane nowe wskaźniki tj.: odcinki wymuszonych ściągnięć i siły sczepliwości. Analizę parametrów wytrzymałościowych przędz złączonych pneumatycznie zawarto w części I publikacji. Badania wykazały zależność wszystkich wyznaczanych wskaźników od różnorodnych parametrów procesu tj.: prędkości procesu, ciśnienia powietrza, rodzaju dysz pneumatycznych (ich rozwiązań konstrukcyjnych) oraz od właściwości łączonych komponentów. Przeprowadzone badania rozpoznawcze wskazały szansę wykorzystania wysokowydajnej techniki sczepiania pneumatycznego, jako nowego kierunku w technologii łączenia przędz filamentowych ze staplowymi oraz zainspirowały kontynuacje prac w tym zakresie.

3

Linking Yarns from Staple and Filament Fibres by High - Efficiency Pneumatic Interlucing. Part 1, Factors Influencing the Linking Effect and Properties of Interlaced Yarns : Analysis of Tensile Strength Parameters

Ankudowicz W., Dopierała H., Radom C., Swaczyna P.

Fibres & Textiles in Eastern Europe

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2008

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Vol. 16, no. 1 (66)

37--43

EN

The linking of yarns manufactured from staple and filament fibres, as well as only from staple fibres by the technique of high-efficient pneumatic interlucing was the subject of investigations commenced at the Textile Research Institute. This technique, well known and generally used for linking mono- and multifilament yarns, is relatively new considering staple yarns. A broad range of new construction designs and technological investigations allowed the identification of factors influencing the effect of pneumatic interlucing and the properties of the linked yarns obtained by this technique. The influence of the kind of interlucing pneumatic nozzles, as well as of such parameters as the speed and pressure of the air acting in the nozzle, tensions of the linked yarns, and the kind and properties of the component yarns were investigated. Estimation of the existing dependences was carried out on the basis of the following yarn parameters: tensile breaking strength, elongation at break, unevenness of linear density, the number of faults, hairiness, and as well as the estimation of the interlucing cohesiveness, a new parameter which was assessed according to a method elaborated at the Textile Research Institute through innovative investigations. Part I of the article includes analyses of the influence of selected parameters on the tensile strength properties of linked filament – staple yarns, whereas Part II presents an analysis of hairiness, the unevenness of linear density, the number of faults, and the interlucing cohesiveness. The investigation carried out by us indicated the dependencies of all the process parameters tested, such as the speed of air-flow and air pressure, the construction design of the nozzles, and the properties of the component yarns on the linked yarn properties.

PL

Przedmiotem pracy jest łączenie przędz z włókien odcinkowych (staplowych) z filamentowymi lub tylko staplowych ze sobą, za pomocą wysokowydajnej techniki sczepiania pneumatycznego. Technika ta jest znana i powszechnie stosowana, w odniesieniu do przędz ciągłych multi- i monofilamentowych. Szeroko zakrojone prace konstrukcyjne i badania technologiczne pozwoliły na poznanie efektu pneumatycznego sczepiania i właściwości połączonych przędz filamentowo – staplowych i staplowych. Analizowano wpływ na efekty łączenia takich czynników jak: rodzaj dysz sczepiających, parametry procesu oraz rodzaj komponentów i ich właściwości. W części I analizowano siły zrywania i wydłużenia otrzymanych przędz.