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References [1] Afzal, A., Ahmad, S., Rasheed, A., Mohsin, M., Ahmad, F., Nawab, Y. (2015). Characterization and statistical modelling of thermal resistance of cotton/polyester blended double layer interlock knitted fabrics. Thermal Science, (00), 201-201. [2] Afzal, A., Hussain, T., Mohsin, M., Rasheed, A., Ahmad, S. (2014). Statistical models for predicting the thermal resistance of polyester/cotton blended interlock knitted fabrics. International Journal of Thermal Sciences, 85, 40-46. [3] Altas, S., Ozgen, B. (2013). Investigation of Fabric Properties Woven

Abstract

Thermal-insulation properties of textile materials play a significant role in material engineering of protective clothing. Thermal-insulation properties are very important from the point of view of thermal comfort of the clothing user as well as the protective efficiency against low or high temperature. Thermal protective clothing usually is a multilayer construction. Its thermal insulation is a resultant of a number of layers and their order, as well as the thermalinsulation properties of a single textile material creating particular layers. The aim of the presented work was to investigate the relationships between the thermal-insulation properties of single materials and multilayer textile packages composed of these materials. Measurement of the thermal-insulation properties of single and multilayer textile materials has been performed with the Alambeta. The following properties have been investigated: thermal conductivity, resistance and absorptivity. Investigated textile packages were composed of two, three and four layers made of woven and knitted fabrics, as well as nonwovens. On the basis of the obtained results an analysis has been carried out in order to assess the dependency of the resultant values of the thermal-insulation properties of multilayer packages on the appropriate values of particular components.

Abstract

Both loop fancy yarns and frotte fancy yarns belong to the group of yarns with continuous effects. The difference between frotte and loop yarn relies on the fact that the loop yarn is constructed with two core yarns and the frotte yarn is constructed with only one core yarn. The differences are evident in the shape of these two types of fancy yarns. These shape differences are the functions of the tensions of component yarns during the twisting process. The shape and construction of the fancy yarn influence its properties. The properties of loop and frotte fancy yarns, woven and knitted fabrics are compared in this article in order to find out the optimal yarn’s and fabric’s production condition to satisfy the final user and maintain low production costs. In terms of economy aspects only, the frotte fancy yarns are believed to be cheaper in production due to lower quantity of components utilize for their production to compare with loop fancy yarns, under conditions of the same settings of ring twisting frame.

Abstract

Nonwoven geotextiles are often used in road construction as a separation layer. They consist of the web of fibers with different orientations. The orientation of fibers has an important influence on physical and mechanical properties of nonwoven geotextiles. The production of nonwoven geotextiles is cheaper in comparison to woven or knitted fabrics which can also be used as separation geotextiles. The purpose of this research was to study the influence of structural properties of nonwoven geotextiles, namely the diameter of fibers and mass and thickness of nonwoven geotextiles, on their mechanical and hydraulic properties. Six types of nonwoven geotextiles were used in the research. They were produced by the drylaid process (carded) using mechanical bonding technique and also with the combination of mechanical and thermal bonding technique. The research confirmed that the bonding technique and structural properties significantly influence the separation and filtration properties of nonwoven geotextiles, such as opening size and water permeability. It was also found that there are no significant differences in mechanical properties, such as viscoelastic properties and compression creep, between the samples in the dry and wet conditions.

characteristics and laundering to shrinkage of weft knitted fabric, Textile Research Journal, Vol. 73, No. 3, p. 187-19, 2003. [5] Dhingra, R. C.; Chan, C.K.; Abbas, M. S.; Tao, J. : Effects of yarn and fabric construction on spirality of cotton single jersey fabrics, Textile Research Journal, Vol. 67, No. 1, p. 57-68(1997. [6] Herath, C. N.; Kang, B.C.: Effect of washing cycles on behavior of core spun cotton/spandex interlock structures, Fibers and Polymers, Vol. 10, No. 2, p. 209-216, 2009. [7] Nakajima, M.; Takahashi, M.; Quaynor, L.: Dimensional changes in knitted silk

References [1] Ozturk, M. K., Nergis, B., Candan, C. (2011) A study of wicking properties of cotton-acrylic yarns and knitted fabrics. Textile Research Journal, 81(3), 324–328. [2] Afzal, A., Hussain, T., Malik, M. H., Rasheed, A., Ahmad, S., Basit A., Nazir, A. (2014) Investigation and modeling of air permeability of Cotton/Polyester blended double layer interlock knitted fabrics. Fibers and Polymers,15(7),1539-1547. [3] Moghassem, A. R., Fakhrali, A.(2013) Comparative study on the effect of blend ratio on tensile properties of ring and rotor cotton

interlinings to sewability properties of the woven fabrics. Journal of Textile & Apparel, 21(1), 87-90. [15] Gurarda, M., Merıc, B. (2005). Sewing needle penetration forces and elastane fibre damage during the sewing of cotton/elastane woven fabrics. Textile Research Journal, 75(8), 628-633. [16] Saied, F., Abdel-megeid, Z.M., Gabry, L.K. (2011). The relation between fabric construction, treatments and sewability. Journal of American Science, 7(3), 818-826. [17] İlleez, A. A., Dalbası, E. S., Kayseri, G. Ö. (2015). Improving of sewability properties of various knitted

1 Introduction Knitted fabrics are characterized by comfort compared to woven fabrics due to their high extensibility, air permeability, and heat retention, but they have low-dimensional stability, especially single jersey knitted fabrics (SJKF), after repeated washing. Therefore, the additional Lycra (elastane) yarns are used to maintain the dimensions of knitted fabrics during use and after repeated stresses. Recently, the core and dual-core-spun (DCS) yarns are commonly used in stretched denim woven fabrics and there are some researches that evaluated the

Number 167. [4] Mikołajczyk, Z. (2009). Modeling of the knitting process with respect to the optimisation of the construction parameters of warp-knitting machines. Fibres & Textiles in Eastern Europe, 17, 2 (73), 76-81. [5] Pieklak, K., Mikołajczyk, Z. (2009). Original concept of a new multicomb warp-knitting machine for manufacturing spatial knitted fabrics. Fibres & Textiles in Eastern Europe, 17, 3 (74), 76-80. [6] Michalak, A., Kuchar, M., Mikołajczyk, Z. (2015). Simulation tests of the feeding system dynamics on the warp knitting machine with four needle combs

Serkan, Oğulata R. T. Prediction of air permeability of knitted fabrics by means of computational fluid dynamics. Tekstilvekonfeksiyon 2014; 24(2): 202−211 [5] Ogulata R.T. Air Permeability of Woven Fabrics. Journal of Textile and apparel. Technology Management 2006; 5: 1–10. [6] Havlová M. Air Permeability and Constructional Parameters of Woven Fabrics. Fibres and Textiles in Eastern Europe 2013; 21, 2(98): 84–89. [7] Ghada Ahmad Mohamad. Comparative Study of Air Permeability of Polyester/Metallic Blended Woven Fabrics. Life Science Journal 2015; 12 (6): 78–82 [8