7D × 64mm Black Recycled Polyester Fiber

Product Introduction

7D × 64mm Black Recycled Polyester Fiber is a high-performance synthetic staple fiber manufactured from post-consumer or post-industrial recycled PET materials. This fiber combines a medium-coarse denier with an extended staple length, featuring a deep black color achieved through dope-dyeing or masterbatch technology, which eliminates the need for additional dyeing processes and reduces water and energy consumption.

With a denier of 7D (medium-coarse fiber grade) and a cut length of 64mm, this fiber is specifically engineered for processing on woolen, semi-worsted, and non-woven systems. The black color offers excellent colorfastness and uniformity, making it ideal for applications where consistent dark tones are required.

Key Features

• Linear Density: 7 denier – medium-coarse texture, high bulk, excellent resilience

• Staple Length: 64 mm – suitable for woolen spinning, non-woven, and filling applications

• Color: Black – dope-dyed, excellent colorfastness, no additional dyeing required

• Material: Recycled polyester (rPET) – derived from recycled PET bottles or pre-consumer waste

• Sustainability: Reduces carbon footprint, supports circular economy, eligible for GRS certification

• Properties: High bulk, good thermal insulation, quick drying, abrasion resistance, low moisture absorption

Company introduce

Our yarn factory has an annual production capacity of 100,000 tons and has advanced spinning and winding equipment in 6

lines with a total of 260 spinning positions. Our yarn products with different functions and can be customized by custom special

requirement.

Our main product include:

✔ Polyester Filament (FDY/DTY) - Virgin & Recycled Systems (Dual GRS + OEKO-TEX Certification)
✔ Polyester Staple Fiber - Eco-Conscious Virgin/Recycled Options (GRS + OEKO-TEX Certified)
✔ Nylon Fiber - Sustainable Virgin/Recycled Series (GRS Certified)

Our company actively responds to the country's call for the development of green and environmental protection economy,

and promotes environmental protection. Recycled products covers FDY/POY/DTY/ITY series, at the mean-wiles, the development

of colored and functional recycle yarns have been put on the market in large quantities and has been well received by clients.

Applications

Thanks to its coarse denier, longer cut length, deep black color, and sustainable profile, this fiber grade is widely used across multiple textile and industrial sectors.

In spun yarn production, the 64mm length makes it well suited for woolen and semi-worsted spinning systems, where it can be used to produce bulky, textured yarns for heavy-weight apparel and home textiles. The black color eliminates the need for post-dyeing, simplifying the production process and reducing environmental impact.

For non-woven fabrics, this fiber is commonly applied in needlepunch and thermal-bonded nonwovens, including automotive interiors, geomembranes, carpet backing, and insulation materials. The 7D thickness provides excellent structural integrity and durability in these applications.

In filling and stuffing applications, the 7D × 64mm specification offers outstanding bulk and resilience, making it ideal for plush toys, pillows, cushions, and upholstery filling. The hollow version of this fiber (if applicable) further enhances loft and thermal insulation properties.

Additionally, this fiber is frequently used in woven and knitted fabrics for outdoor apparel, workwear, luggage linings, and shoe components, where color consistency, durability, and sustainability are key requirements. The black color also makes it a popular choice for blending with other fibers to achieve heather or mélange effects in fashion textiles.

Production line

Packing and load container