Effect of changes in knit structure and density on the mechanical and and properties weft-knitted fabrics for outerwear
Effect of changes in knit structure and density on the mechanical and and properties weft-knitted fabrics for outerwear
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DOI:
10.1177/004051750007001201
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发表时间:
2000-12-01
影响因子:
2.3
通讯作者:
Ashdown, SP
中科院分区:
文献类型:
--
作者:
Choi, MS;Ashdown, SP
This study focuses on the mechanical properties of weft knits for outerwear as a function of knit structure and density and the relationships between hand, structure, and density. Eighteen weft knits are produced with six different structures (I x 1 rib, half-cardigan rib, half-milano rib, interlock, single-pique, and crossmiss interlock) and three different densities (loose, medium, tight). The mechanical properties and hand values of the fabrics are measured using the KES-F method. Tensile properties increase for fabrics with a higher density, as do bending and shear properties. Compression values decrease somewhat as knit density increases but differences in compression values are not very large. Surface properties such as softness and smoothness increase with density. Specific findings for tensile properties reveal that the single-pique and the crossmiss interlock can not absorb external stress as much as the 1 x 1 rib and the interlock when stresses are applied in the course direction. Knits with tuck and miss stitches (half-cardigan rib, half-milano rib, single-pique, and crossmiss interlock) have better dimensional stability than fabrics with only knit stitches. Testing of primary hand values shows increased stiffness and fullness and softness and decreased smoothness as knit density increases. Total hand value increases with knit density. Double knits show higher total hand values than single knits. Half-milano rib and crossmiss interlock structures have the highest total hand values. Based on the tests results and an understanding of current market needs for dimensionally stable fabrics with a soft hand, we conclude that knit structures with combined miss and tuck stitches exhibit properties appropriate for outerwear fabrics for the winter season.