Polyester Staple Fiber Parameters
PSF is a synthetic fiber made from a type of polymer called polyethylene terephthalate (PET). Some of the important parameters of polyester fiber include:
- Denier: This refers to the thickness or diameter of the individual fibers. Polyester fiber deniers range from 1 to 15 denier.
- Tenacity: This is the strength of the fiber, measured in grams per denier (gpd). Polyester fiber has a tenacity ranging from 3.5 to 7.0 gpd.
- Elongation: This is the amount of stretch the fiber can withstand before it breaks. Polyester fiber has an elongation of 15% to 45%.
- Moisture regain: This is the amount of moisture that the fiber can absorb. Polyester fiber has a very low moisture regain of only 0.4%.
- Melting point: This is the temperature at which the fiber starts to melt. Polyester fiber has a melting point of approximately 250°C (482°F).
- Specific gravity: This is the density of the fiber compared to the density of water. Polyester fiber has a specific gravity of 1.38, which means it is denser than water.
- Colorfastness: This is the ability of the fiber to retain its color when exposed to light, heat, or other environmental factors.
Types of Polyester Staple Fiber
Varieties and Applications
Based on their properties and manufacturing methods, one can categorize polyester staple fibers into several types. Some common types include:
- Solid Polyester Staple Fiber: Uniform in composition and appearance, used in various applications.
- Hollow Polyester Staple Fiber: Features hollow spaces within the fiber, providing insulation, moisture-wicking, and lightweight characteristics, often used in filling materials for pillows, comforters, and outerwear.
- Siliconized Polyester Staple Fiber: Treated with silicone to improve its softness and resilience, commonly used in pillows, cushions, and other filling materials.
- Low-Melt Polyester Staple Fiber: Engineers design it to melt at lower temperatures, making it a common choice for applications requiring bonding or fusion, like in non-woven fabrics.
- High-Tenacity Polyester Staple Fiber: Known for its high strength and durability, suitable for industrial applications requiring strong and resilient fibers.
These types may vary in terms of their composition, structure, and intended applications, meeting different needs across industries such as textiles, automotive, construction, and more.