Sewing needles needle sizes

High capacity for storage of preferably liquid effect chemicals only few restrictions on their molecular size or polarity but the oxide film changes textile qualities like softness causes a harder hand and problems during sewing (needle abrasion)... 

Rocha (1996) used a piezoelectric sensor inserted into the needle bar of an industrial overedge sewing machine, a measurement system that was further developed by Carvalho (2010). With this equipment, it is possible to measure needle penetration and withdrawal force at industrial speeds. Rocha found that, among other material properties, bending rigidity and drape factor were related to needle penetration forces. It was possible to demonstrate the relationship among needle size, sewing... 

Singer and written as 90/14 similarly, 75 NM is equivalent to 11 size of Singer and so on. While 75/11 size needle is commonly used for sewing medium-weight fabric, 110/18 size may be used for 16-oz denim fabric and so on. There are a total of 24 sizes of needle available, with the thinnest size being 35 NM and thickest size being 200 NM. 

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