HEAT, AIR AND WATER VAPOR TRANSFER PROPERTIES OF CIRCULAR KNITTED SPACER FABRICS

Year 2011, Volume: 21 Issue: 4, 369 - 373, 30.12.2011

Gözde Ertekin , Arzu Marmaralı

Abstract

Spacer fabrics are 3D textile structures formed of two fabric layers combined by a spacer yarn or layer. The production method of spacer fabrics produced in circular knitting machines is based on the connection of two fabric layers knitted in cylinder and dial with tucks. In this study, thermal comfort properties of fabrics which are produced in three different dial heights and two different spacer yarn on circular knitting machine by using spacer fabric production method were investigated. It is observed that, fabric weight, thermal conductivity, thermal resistivity, air permeability and relative water vapor permeability properties are affected by dial height and the type of spacer yarn significantly.

Keywords

Spacer fabrics, Circular knitting, Dial height, Spacer yarn, Thermal comfort

YUVARLAK ÖRME SANDVİÇ KUMAŞLARIN ISI, HAVA ve SU BUHARI TRANSFER ÖZELLİKLERİ

Abstract

Sandviç tekstiller iki kumaş tabakasının bir bağlantı ipliği veya tabakası ile bağlanması sonucu elde edilen üç boyutlu yapılardır. Yuvarlak örme makinelerinde sandviç kumaş üretimi, silindir ve kapak iğneleri tarafından örülen iki kumaş tabakasının, bağlantı ipliklerinin her iki yatakta askı yapması ile birleştirilmesi esasına dayanır. Bu çalışmada yuvarlak örme makinelerinde sandviç kumaş üretim tekniği ile üç farklı kapak yüksekliğinde ve iki farklı bağlantı ipliği ile üretilen sandviç kumaşların fiziksel ve ısıl konfor özellikleri incelenmiştir. Araştırma sonucunda kapak yüksekliği değişiminin ve bağlantı iplik tipinin kumaşların gramaj, ısıl iletkenlik, ısıl direnç, hava geçirgenliği ve bağıl su buharı geçirgenliği özellikleri bakımından farklılık yarattığı tespit edilmiştir.

Keywords

Sandviç kumaşlar, Yuvarlak örme, Kapak yüksekliği, Bağlantı ipliği, Isıl konfor

References

• 1. Milenkovic, L., Skundric, P., Sokolovic, R., Nikolic, T., 1999, “Comfort Properties of Defence Protective Clothing”, The Scientific Journal Facta Universitatis, 1(4), pp:101–106.
• 2. Holcombe, B.V., Hoschke, B.N., 1983, “Dry Heat Transfer Characteristics of Underwear Fabrics”, Textile Research Journal, 6(53), pp:368-374.
• 3. Obendorf, S.K., Smith, J.P., 1986, “Heat Transfer Characteristics of Nonwoven Insulating Materials”, Textile Research Journal, 11(56), pp:691-696.
• 4. Greyson, M., 1983, “Encyclopedia of Composite Materials and Components”, Wiley & Sons, New York.
• 5. Havenith, G., 2002, “The Interaction of Clothing and Thermoregulation”, Exogenous Dermatology, 1(5), pp:221–230.
• 6. Shoshani, Y., Shaltiel, S., 1989, “Heat Resistance Characteristics of Weft Knit Single Jersey Inlay Fabrics”, Knitting Times, pp: 70–72.
• 7. Pac, M. J., Bueno, M. A., Renner, M., “Warm-Cool Feeling Relative to Tribological Properties of Fabrics”, Textile Research Journal, 71(19), pp:806–812.
• 8. Anand, S., 2003, ”Sportwear Fabrics”, Knitting International, June, pp:23-25.
• 9. Hes, L, Geraldes, M.J., Araújo, M., 2002, “How to Improve the Thermal Comfort with High Performance PP Fibres”, 2nd AUTEX World Textile Conference, Bruges, Belgium, p: 428.
• 10. Uçar, N., Yılmaz, T., 2004, “Thermal Properties of 1x1, 2x2, 3x3 Rib Knit Fabrics”, Fibres&Textiles in Eastern Europe, Vol.12, No. 3(47), pp:34-38.
• 11. Bruer, S.M., Powell, N., Smith, G., 2005, “Three Dimensionally Knit Spacer Fabrics: a Review of Production Techniques and Applications”, Journal of Textile and Apparel, Technology and Management, 4 (4), pp:1-30.
• 12. Anand, S., 2003, “Spacers – At the Technical Frontier”, Knitting International, 110 (1305), pp:38-41.
• 13. Musiol, M., 2005, “Analysis of Transverse Deformability of Spacer Products”, AUTEX Research Journal, 1(5), pp:67-70.
• 14. Wollina, U., Heide, M., Müler-Litz, W., Obenauf, D., Ash, J., 2003, “Functional Textiles in Prevention of Chronic Wounds”, Wound Healing and Tissue Engineering, Textiles and the Skin, (31), pp: 82-97.
• 15. Pause, B., 2002, “Studies on the Thermophysiological Comfort Provided by Knitted Spacer Fabrics”, Melliand International, 1(8), pp:57-60.
• 16. Ye, X., Hu, H., Feng, X., 2005, “An Experimental Investigation on the Properties of the Spacer Knitted Fabrics for Pressure Reduction”, Research Journal of Textile and Apparel, 3(9), pp: 52 – 57.
• 17. Wei, H., Hairu, L., 2006, “The Investigation on Knitting Technology and Compressive Properties of Weft Knitted Spacer Fabric”, China Textile Leader,11, pp:51-53.
• 18. Yip, J., Ng, S., 2008, “Study of Three-Dimensional Spacer Fabrics: Physical and Mechanical Properties”, Journal of Materials Processing Technology, 206, pp: 359-364.
• 19. Hes, L., 2001, “Fast Determination of Surface Moisture Absorptivity of Smart Underwear Knits”, International Textile Conference, Terrassa, Spain.
• 20. Hes, L., 2007, “Thermal Comfort Properties of Textile Fabrics in Wet State”, XI. International İzmir Textile and Apparel Symposium, Izmir, Turkey.
• 21. ISO 11092, 1993, “Textiles – Determination of Physiological Properties – Measurement of Thermal and Water Vapor Resistance Under Steady-state Conditions (Sweating Guarded-Hotplate Test)”.
• 22. Ergün, M., 1995, “SPSS for Windows”, Ocak, Ankara, p:107.
• 23. Morton, W. E., Hearle, J. W. S.,1993, Physical Properties of Textile Fibre, The Textile Institute, Manchester, England.
• 24. Oğlakcıoğlu, N., Marmaralı, A., 2007, “Thermal Comfort Properties of Some Knitted Structures”, Fibers&Textiles in Eastern Europe, 5-6(15), pp:64-65.