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Filament and Staple Fiber
We offer products that can meet the performance needs for filament fiber and staple fiber. High-cleanliness specialty carbons are suitable for coarse, fine and ultra fine denier applications.
Polyester filament yarns encompass two main types: polyester partially oriented yarn (POY) and fully draw yarn (FDY). When referring to Polyester Staple fiber, it is commonly known as PSF. These filaments find application in a wide range of industries, such as apparel, home furnishings and industrial applications. Additionally, staple fibers are frequently integrated into fiber blends. Our carbon black products portfolio is widely used in POY, FDY and PSF to promote fiber performance and processability requirements.
- L* (color strength, also known as jetness or masstone) values represent white/black or light/dark
- a* values represent red/green
- b* (blue tone) values represent yellow/blue
With respect to carbon black, L* and b* are most relevant values. Low L* values are preferable (indicating a darker, or blacker color)
Download BrochureOUR PRODUCTS HELP CUSTOMERS SATISFY KEY PERFORMANCE CRITERIA:
Color performance is of utmost importance in apparel and textile applications that utilize fine denier fibers made from polyesters. Polyester filaments are spun at incredibly high speeds (3,000 to 4,000 meters/minute) and these fibers are typically fine or ultra-fine. To achieve the desired vibrant color results, carbon blacks used in polyester fibers must exhibit a high level of cleanliness, including low ash and grit content. This cleanliness is crucial for ensuring excellent spinnability and optimal melt polymer filterability. Our range of BLACK PEARLS® carbon blacks, including 5560, 5160, 4560i and 3560 grades, meets these requirements by demonstrating the appropriate level of cleanliness as assessed through pressure tests across a screen. We rigorously test each of these products for cleanliness as part of our stringent quality control procedures.
Download BrochureFiber Jetness
Fiber jetness stands as a significant gauge in fibers, commonly assessed through the L value, whereby a lower L value indicates a darker fiber. The chart below shows the specific darkness performance of our portfolio in an exemplary fiber.
Test conditions:
- the fiber used is 75D/72F. D: Denier, F: Filament
- the loading of carbon black is 1.5%
- BLACK PEARLS® 5160 specialty carbon black offers better jetness and acceptable spinning ability for certain fiber applications.
- BLACK PEARLS® 5560 specialty carbon black offers good blue tone and exceptional cleanliness for fine denier fibers.
- BLACK PEARLS® 4560i specialty carbon black delivering superior cleanliness and processability (higher masterbatch loadings).
- BLACK PEARLS® 3560 specialty carbon black offers a balance of cleanliness and color for standard fibers (e.g. high-end carpets and coarse filaments).
