The COOL-SEW finish was developed to alleviate needle problems
resulting from the following situations:
(1) Heat Buildup in penetration of synthetic, chemically treated,
or very dense materials
(2) Materials or residue sticking to needle surface or in eye
(3) Excessive sewing thread breakage due to friction in the needle eye
As a needle penetrates synthetic, chemically treated or very dense materials a great deal of friction may develop. The needle may get so hot as to actually melt or fuse the sewn material along the seam. The needle’s heat may melt the synthetic sewing thread. When the machine stops, the melted residue may stick to the needle surfaces as it cools.
The nature of some