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What is the breathability of composite spun fibers
source：www.ujvmv.cn | Release time：2025-01-141. Fiber types and proportions
High proportion of natural fibers: If composite spun fibers contain more natural fibers such as cotton, hemp, silk, etc., they usually have better breathability. Because natural fibers have good moisture absorption and pore structure, they can allow air and water vapor to freely pass through. For example, when the proportion of cotton in cotton polyester composite fibers is high, their breathability will be relatively good.
High proportion of synthetic fibers: If synthetic fibers such as polyester fibers, nylon, etc. account for a large proportion in composite spun fibers, the breathability may be affected to some extent. Synthetic fibers themselves have poor moisture absorption and a tight fiber structure, resulting in high resistance to air and water vapor passing through.
2. Morphology and structure of fibers
Hollow fiber: Some composite spun fibers adopt a hollow structure, with a hollow part in the middle, which increases the storage and circulation space of air, thereby improving breathability. For example, hollow polyester composite spun fibers have better breathability than ordinary solid polyester fibers.
Irregular shaped fibers: Irregular shaped fibers with a larger surface area and more gaps between fibers compared to circular fibers, which facilitate air circulation and have better breathability.
3. The organizational structure of the fabric
Loose organizational structure: If the fabric adopts a loose weaving method, such as plain weave, diagonal weave, etc., and the gaps between the yarns are large, then the breathability of the fabric made of composite spun fibers will be better.
Tight organizational structure: On the contrary, if the fabric has a tight organizational structure, such as satin weave or high count high-density fabric, the gaps between the yarns are small, making it difficult for air and water vapor to pass through, resulting in poor breathability.
4. Post finishing process
Hydrophilic finishing: By introducing hydrophilic groups on the surface of composite spun fibers through hydrophilic finishing technology, the moisture absorption and breathability of the fibers can be improved, making the fabric more comfortable to wear.
Coating finishing: Some coating finishing may form a continuous thin film on the fiber surface, hindering the passage of air and water vapor, resulting in a decrease in breathability. But some special breathable coatings, such as waterproof breathable coatings, can maintain good breathability while ensuring certain waterproof performance.
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