4D × 65mm GRS Certified Recycled Polyester Fiber

Product Description 

This is a high-quality recycled polyester staple fiber, manufactured from post-consumer PET bottles or post-industrial polyester waste. It has a linear density of 4 Denier (4D) and a cut length of 65 millimeters. The fiber is GRS Certified (Global Recycled Standard), ensuring full traceability, environmental responsibility, social compliance, and recycled content claims throughout the supply chain. With its medium-coarse thickness (4D) and medium-long staple length (65mm), this fiber offers a good balance between softness, resilience, and processability. It is typically available in semi-dull or bright luster, and can be produced in raw white or solution-dyed colors upon request.

Key Specifications

• Denier: 4D (medium thickness, good coverage and stiffness)

• Staple length: 65mm (suitable for woolen spinning, semi-worsted spinning, and nonwoven lines)

• Material: Recycled polyester (r-PET) from bottle scrap or pre-consumer waste

• Certification: GRS (Global Recycled Standard) — including recycled content, chain of custody, environmental, and social criteria

• Luster: Typically semi-dull or bright (customizable)

• Cross-section: Round or available as hollow/crimped upon request

Typical Properties

• Excellent uniformity and spinnability

• Good tenacity and abrasion resistance

• Environmentally friendly — reduces plastic waste and carbon footprint

• Consistent dye uptake (raw white grade)

• GRS traceability from raw material to finished fiber

• Suitable for blending with natural or other synthetic fibers

Main Applications

Thanks to its medium thickness (4D), 65mm staple length, and GRS certification, this fiber is widely used across various textile and industrial sectors:

Spun Yarns (Woolen / Semi-worsted Systems)
This fiber is ideal for producing knitting yarns used in sweaters, cardigans, scarves, gloves, blankets, and heavy outerwear. It is often blended with wool, acrylic, or viscose to achieve specific hand feel and performance characteristics.

Nonwoven Fabrics
The fiber performs excellently in needle-punched felt, geotextiles, automotive interior fabrics, insulation mats, filtration media, and carpet backing. It processes well on needle-punch, airlaid, and carded web lines.

Home Textiles
In stuffed toy filling, pillow filling, cushion inners, and quilt batting (especially in hollow or siliconized versions), the 4D thickness provides good bounce, loft, and recovery without being too stiff or too soft.

Industrial Textiles
This fiber is used in wiping cloths, industrial felts, sound absorption panels, and protective padding where durability and eco-friendliness are required.

Automotive Textiles
Applications include floor mats, trunk liners, door panel insulation, and seat backing fabrics. The fiber's strength and abrasion resistance make it suitable for these demanding environments.

Eco-friendly Branded Products
Any product requiring GRS certification for sustainable retail, export, or green marketing compliance can utilize this fiber. It meets the sourcing standards of major global brands for recycled materials.

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.

 Production line

Packing and load container