Dimensional Stability of Fabric
Why dimensional stability of fabric is very important ?
Dimensional stability is also the compulsory characteristics of a
fabric. In the dimensional stability we look whether fabric can keep its
original dimensions such as length, width, depth after next process such as
washing, dyeing, ironing, milling, crushing etc. In the textile industry we
always think knitted panels dimension changes than woven fabric. Because
knitted fabric has higher stretchability than woven. Not only that in the
kitting process will occur inter friction on each loops and keep tightly
according to loop formation and roller tension. After produced fabric will
reduce its dimension after keep relaxing. And also we have to keep unroll
knitted fabric rolls about 24 hour hours before fabric marking and cutting. If
not unrolled correctly to relax the cut pieces measurement will be changed. And
also we have to test and understand dimensional changes following all process
of knitted garment manufacturing process.
·
Relaxation Shrinkage
·
Swelling Shrinkage
·
Felting Shrinkage
·
Hygral expansion
I can explain another important point that dimensional stability must be
considered when pattern making for knitted garment. In the woven pattern making
there are less issues and found issues rarely but when we produce pattern and
grading patterns for knitted fabric we must add shrinkage allowances. Because
knitted panels are mostly changed dimensions. As well as when bundling cut
knitted pieces will not pack and tag with tightly and not transport using
compress packing. In the laying knitted fabric rolls on the cutting table
without compress and stretch. And also even sewing process we have to care
dimensional properties about sews garments (Specially knit garments). When machine operator launching sewing process
he must proper control operation because some operator does not care about
dimensional properties he add high tension and stretch or crush. After sewing process
finished garment will relax so next, sew garments configure will be changed.
Therefore may be occurring fit on errors and ugly appearance. Therefore
dimensional stability of fabric is very important.