Double Knit Setting It Correctly on a Tech Pack
Double Knit should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
any fabric knitted with two needle beds. Working figures for Double Knit normally sit around 200-340 GSM in mainstream production. Note double jersey machine on the tech pack so nobody tests against an older revision.
Target value
Open the specification at 200-340 GSM, adjusted to the end use. Record elastane content alongside Double Knit, because blends shift the measured value. A result outside 200-340 GSM usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with double jersey machine so the mill and the laboratory test the same way. Keeping reference values for Double Knit lets suppliers quote without extra sampling rounds. Ask for conditioning details together with double jersey machine, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Double Knit normally sit around 200-340 GSM in mainstream production. Note double jersey machine on the tech pack so nobody tests against an older revision.
Approval step
Approve the result on pre-production bulk rather than on development fabric only. Record elastane content alongside Double Knit, because blends shift the measured value. A result outside 200-340 GSM usually points to process drift rather than to the fibre itself.
