How to choose good circular knit interlining?

Good circular knit interlining should has 3 points:Good stretch , good recovery and flat that no curling problem.

First ,stretch is the brand of the circular knit interlining.But it should has stretch not only in weft side but also warp side.Or there is no difference between the circular knit interlining and warp knit interlinig.When pulling the fabric in warp side,it should has 20% elongation.

Second,recovery.this is another brand of circular knit interlining.Because now some  face fabric has stretch now.After washing and pressing,the face fabric will change.If the interlining can not change with the change of face fabric,the interlining will fall off.

Third how to slove curling problem.we make the sides hard as modular equipment.When unfolding in clothing factory,you should choose the flat interlining.Even cutting into pieces,the fabric's side should not curle.

In all ,good quality of circular knit interlining means good stretch, good recovery and no curling problem.