The meaning of specification representation method for nylon 6 stretch yarn
The common standards for nylon 6 stretch yarn are 40D/18F, 70D/24F, and 140D/48F. What do these numbers and letters represent? Let's talk about the significance of these methods:
D is used to indicate thickness. Its Chinese name is Denier and its English name is Denier. Its definition is the unit of linear density. It refers to the mass in grams per 9000m length at a fixed moisture regain rate. For example, according to the 40D standard, weighing 9000 meters on a measuring instrument would result in 40 grams.
In the textile industry, F refers to the number of fibers that form the yarn. For example, in the 70D/24F standard, there are 24 threads that make up the 70D nylon filament. The F-number refers to the number of holes in the spinneret, and the larger the F-number, the higher the grade. When the "F" number is equal to the "D" number, the filament is called ultra-fine.
Article source: Nylon colored yarn
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