The Effect of Bonded Seams upon Spatial Behaviour of Knitted Materials Systems

  • Gita BUSILIENĖ Kaunas University of Technology
  • Eugenija STRAZDIENĖ Kaunas University of Technology
  • Virginijus URBELIS Kaunas University of Technology
  • Sigitas KRAULEDAS State research institute Center
Keywords: knitted, bonded seams, biaxial tension, deformation behaviour, adhesive film.

Abstract

Spatial behaviour of knitted materials with bonded seams under biaxial tensile loading is analysed in this work. The objects of the research were plain jersey and rib 1×1 polyester knitted materials with elastane (93 % PES, 7 % EL). Two thermoplastic polyurethane (PU) films different in thickness (75 mm and 150 mm) were used. For each sample of knitted material and thermoplastic film five types of bonded seams (10 mm in length) were prepared by changing the orientation of knitted material strips, i.e. parallel/parallel, parallel/bias, parallel/perpendicular, bias/bias and bias/perpendicular. The effect of thermoplastic films type and the effect of knitted materials orientation in seam was analysed on the basis of biaxial tensile characteristics – critical punching force P (N) and corresponding punching height H (mm). The changes of tested specimens strength and deformation properties were compared before and after their cyclical fatigue punching (50 cycles; punching force P = 50 N). Obtained results have shown that  changes before and after cyclical fatigue punching are mostly determined by the type of thermoplastic film, but not effected by the orientation of knitted materials pieces in bonded seam.

Author Biographies

Gita BUSILIENĖ, Kaunas University of Technology
Department of Clothing and Polymer Products Technology, Faculty of Design and Technologies, Kaunas University of Technology, Studentu 56, LT-51424 Kaunas
Eugenija STRAZDIENĖ, Kaunas University of Technology
Department of Clothing and Polymer Products Technology, Faculty of Design and Technologies, Kaunas University of Technology, Studentu 56, LT-51424 Kaunas
Virginijus URBELIS, Kaunas University of Technology
Department of Clothing and Polymer Products Technology, Faculty of Design and Technologies, Kaunas University of Technology, Studentu 56, LT-51424 Kaunas
Sigitas KRAULEDAS, State research institute Center

State research institute Center for Physical Sciences and Technology Savanorių ave. 231, LT-02300 Vilnius, Lithuania

Published
2015-06-30
Section
TEXTILE MATERIALS