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

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.