GRS-Certified Recycled Nylon 66 Filament Yarn 70D/24F (Dope Dyed Black, for Webbing)

Total heat nylon fiber incorporates nano ceramic material that absorbs the sun's high-energy band (0.3 to 2.0 um energy accounting for 95%) and converts it into heat energy, while reflecting nearly 100% of the human body's low energy band (10 microns wavelength).

• Full spectrum heat nylon fiber
• Full spectrum heat polyamide fiber
• Total heat polyamide fiber

• Excellent durability
• Broad spectrum heat absorption
• High temperature rise capability
• Rapid heating response
• Superior heat retention

Core Application: Webbing

Webbing is a narrow fabric woven from various yarns, widely used in apparel, luggage, outdoor equipment, pet supplies, automotive seatbelts, and more. This yarn offers the following advantages in webbing applications:

High strength and abrasion resistance come from nylon 66's material properties, enabling the webbing to withstand significant tension and friction without breaking. This makes it suitable for load-bearing webbing such as backpack straps, pet leashes, and safety ties.

The dope-dyed black provides exceptional color fastness. Black webbing will not fade from sunlight, washing, or perspiration during use. There is also no concern about the "white core" phenomenon common with conventional dyeing (where the inner white fiber becomes visible after surface abrasion). This is particularly important for outdoor gear and luggage webbing.

GRS certification gives webbing products an environmental selling point. Brands can display the GRS label on their products, meeting the growing regulatory and consumer demand for sustainable materials in markets like Europe and North America.

The moderate 70D/24F specification gives webbing a soft yet crisp hand feel. It can be used for lightweight webbing (such as garment hanging loops, shoelaces) or plied for heavy-duty webbing (such as backpack shoulder straps, belts).

Common webbing types include: backpack webbing (shoulder straps, handle straps, compression straps), pet leashes and harnesses (dog leashes, chest harnesses, collars), outdoor equipment webbing (tent tie-downs, sleeping bag compression straps, backpack daisy chains), luggage webbing (handle wraps, suitcase compression straps), apparel accessories webbing (belts, waistband inner tapes, hanger loops), and automotive seatbelts (subject to specific safety certification requirements).

Extended Applications

Beyond webbing, this yarn is also suitable for ropes and cords, where 70D/24F can be plied into high-strength, abrasion-resistant, black nylon rope. It can also be used in footwear materials, such as shoelaces, webbing trims, and reinforcement yarns in shoe upper mesh. For industrial sewing threads, the dope-dyed black thread requires no post-dyeing, offers excellent color fastness, and is ideal for sewing dark-colored luggage, footwear, and outdoor gear. It is also well-suited for pet supplies, including collars, leashes, harnesses, etc., where high strength and environmental attributes align with current pet product market trends.

III. Comparison with Similar Products

Compared with virgin nylon 66 webbing yarn, this product is recycled, significantly reducing carbon footprint while meeting GRS certification requirements. Performance is nearly identical, while color fastness is actually superior due to the dope-dyed process.

Compared with recycled nylon 6, nylon 66 offers higher melting point (255°C vs 220°C), better strength, and superior heat resistance, making it suitable for webbing applications requiring heat setting and high-temperature resistance. However, the cost is also relatively higher.

Compared with conventionally dyed yarn, dope-dyed yarn eliminates post-weaving dyeing steps and wastewater discharge. Color fastness is higher (especially light fastness and rubbing fastness), and batch-to-batch color variation is minimal.

Compared with standard black yarn, dope-dyed black is consistent from core to surface. When the webbing surface becomes abraded or worn, no white core becomes visible, maintaining a like-new appearance over time.

Recommended Processing Methods

For webbing weaving, heavy-duty webbing looms or narrow fabric looms are recommended. Both warp and weft can use this yarn. Depending on the required webbing thickness and strength, single-end or plied (e.g., 2-ply, 3-ply) yarns can be used. For finishing, relax scouring to remove lubricants, followed by heat setting. Setting temperature should be controlled between 180°C and 200°C to stabilize dimensions. Note that dope-dyed black yarn will not fade during finishing, but avoid excessive stretching at high temperatures which may cause color change.

To obtain the right to use the GRS label, full chain-of-custody documentation from raw material to finished product must be maintained, including Transaction Certificates (TCs).

ISO9001, STANDARD 100 by OEKO-TEX 100