Polypropylene ultra-fine denier yarn is a fine-sized fiber made from polypropylene. The linear density of a single filament is usually below 1 denier. This type of fiber has a lightweight property, with a specific gravity of 0.91, and can float in water.
In terms of moisture absorption and sweat discharge, polypropylene ultra-fine denier yarn does not absorb water. When the human body sweats, the sweat is quickly transferred to the outer layer of the fabric, preventing the clothing from sticking to the skin and achieving a quick-drying effect. This characteristic makes it suitable for sports clothing, swimsuits, ski suits, yoga clothes and other categories.
In terms of thermal insulation performance, the Polypropylene ultra-fine denier yarn has a lower heat conduction rate, resulting in slower heat loss. The direct dyeing process evenly distributes the color within the fibers, achieving good color fastness and reducing the pollution emissions from traditional dyeing processes.
In terms of specification selection, the common models of Polypropylene ultra-fine denier yarn include 30D/48F, 50D/72F, 75D/72F, 100D/96F, 150D/144F, etc. The breaking strength should be no less than 3.5 cN/dtex, and the boiling water shrinkage rate should be controlled within 5%. The antibacterial products can achieve a sterilization rate of over 99%.
Low-carbon polypropylene ultra-fine filament made from recycled food container materials has already appeared on the market. Compared with the original materials, it can reduce carbon emissions by approximately 73%. This type of material not only addresses the problem of plastic waste but also meets the functional requirements of sportswear.
When clothing enterprises select Polypropylene ultra-fine denier yarn, they need to determine the specification parameters and functional requirements based on the product positioning, taking into account both the wearing comfort and the production economy.
