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Dope Dyed Polyester Yarn

-- Steady & Reliable Manufacturer --

Introduction

Dope dyed polyester yarn, also called solution-dyed, spun-dyed or mass-colored polyester yarn, is colored during melt spinning. Pigment masterbatch is blended into the molten polymer before the filament is formed, so the color runs through the whole fiber instead of sitting on the surface.

GC FIBER produces dope dyed polyester filament yarn in Haian, Nantong, Jiangsu, where we have worked with functional and eco-friendly yarns since 2006. We supply black and custom colors in FDY, DTY and POY, in virgin or recycled polyester, with color matched to your reference sample.

Dope dyed yarn is chosen when a fabric needs strong color fastness, consistent shade from lot to lot, or a lighter dyeing load in the fabric mill. Each color lot ships with a test report and a color-difference check against the approved standard.

What Buyers Usually Check First

  • Color matching: shade agreement with your standard, and how tightly it is held between lots.
  • Color fastness: light, washing, rubbing and perspiration fastness grades for the end use.
  • Minimum order per color: custom colors need a dedicated masterbatch and spinning run.
  • Yarn performance: denier, tenacity and elongation should match the undyed equivalent.

Related products

Services

We insist on timely and fast service, the implementation of all-weather tracking service, adequate spare parts inventory, so that our customers have no worries.

  • Wide Variety

    Wide Variety

    Design & Manufacturing. In stock or customizable.

  • Sample and Catalog

    Sample & Catalog

    OEM/ODM available.

  • Production and Delivery

    Production & Delivery

    Flexible production and delivery policies

  • Business Experience

    Business

    Over 19 years of experience in eco-friendly textile products

Specification

ItemTypical Specification
Material100% polyester (PET); virgin or recycled
Yarn TypeFDY, DTY, POY
Denier Range30D to 600D (common: 50D/24F, 75D/36F, 100D/48F, 150D/48F, 150D/144F, 300D/96F)
Filament Count24F to 288F
ColorBlack as standard; custom colors matched to Pantone, color chip or physical sample
Color DifferenceWithin a color-difference tolerance agreed with the buyer (commonly ΔE 1.0 or lower against the approved standard)
LusterSemi-dull (SD), full-dull (FD), bright
Washing FastnessGrade 4 to 5
Rubbing FastnessGrade 4 to 5 (dry and wet)
Perspiration FastnessGrade 4 to 5
Light FastnessGrade 5 to 7 depending on color and pigment
TenacityFDY 3.8 cN/dtex or higher; DTY 3.2 cN/dtex or higher
Boiling Water ShrinkageFDY 6% to 10%; DTY 6% or lower
PackagePaper tube bobbins, bagged and packed in cartons or on pallets
DocumentsLot test report; color-difference record; recycled-content documents on request

Values above are typical production ranges. Final tolerances and test methods are written into the contract specification and confirmed with pre-shipment samples. Fastness grades vary with color depth and pigment choice; the target grade can be specified per order.

Application

Dope dyed polyester yarn is used where color must stay stable under sun, washing and abrasion, or where the mill wants to remove the dyeing step.

  • Outdoor and automotive textiles: seat fabrics, headliners, seat belt webbing and interior trims.
  • Sportswear and uniforms: black and dark shades that must resist washing and perspiration.
  • Home textiles: curtains, sofa and upholstery fabrics, carpets and rugs exposed to sunlight.
  • Bags, luggage and tents: heavier deniers for backpacks, awnings and tarpaulin base fabrics.
  • Narrow fabrics: webbing, ribbons, drawcords, labels and zipper tapes.
  • Sewing and embroidery thread: base yarn where consistent color from cone to cone is essential.
  • Nonwoven and filter media: colored filament for functional and decorative uses.

Advantages

  • Strong color fastness: pigment sits inside the filament, so it resists fading from light, washing and rubbing better than surface-dyed yarn.
  • Consistent shade: color is controlled at the spinning stage, which limits lot-to-lot variation.
  • Lower dyeing load: removing or reducing the dyeing step cuts water, steam, chemicals and wastewater treatment at the fabric mill.
  • Shorter fabric processing: fewer wet-processing steps can shorten the path from yarn to finished fabric.
  • Same yarn performance: strength, elongation and shrinkage stay in line with undyed yarn of the same specification.
  • Recycled option: available as dope dyed recycled polyester for sustainability programs.

Dope Dyed vs Conventional Dyed Polyester

FactorDope Dyed YarnConventionally Dyed Yarn or Fabric
When Color Is AddedDuring melt spinningAfter spinning, in package, yarn or piece dyeing
Color FastnessVery good, color through the fiberGood, depends on dyeing process
Water and Energy UseMuch lower at the fabric millHigher due to dyeing and rinsing
Color RangeSet per spinning run; best for standard and repeat colorsVery flexible, easy to change shade
MOQ per ColorHigher, needs masterbatch and a spinning runLower per shade
Best ForRepeat colors, black and dark shades, high-fastness end usesSmall lots, fast fashion, many shades

Payment and Shipping

  • Payment terms: T/T (commonly 30% deposit, balance before shipment or against a copy of the B/L) or irrevocable L/C at sight.
  • MOQ: typically from 1 metric ton per color and specification; black and repeat colors can be supplied more flexibly.
  • Samples: test cones are available on request; express freight is normally paid by the buyer.
  • Lead time: about 15 to 25 days for black and repeat colors, and 20 to 35 days for new custom colors including color approval.
  • Trade terms: FOB, CFR, CIF or DAP through Shanghai, Ningbo or Nantong ports.
  • Packing: bobbins bagged and packed in cartons or on pallets with stretch film, sized for export containers; a 20-foot container usually holds around 9 to 12 metric tons depending on packing.
  • Documents: commercial invoice, packing list, bill of lading, certificate of origin and lot test report.

FAQ

  • Q: What is dope dyed polyester yarn?
  • A: It is polyester yarn colored during spinning. Pigment masterbatch is mixed into the molten polymer, so the color is part of the filament rather than a surface treatment.
  • Q: Is dope dyed polyester better than conventionally dyed polyester?
  • A: It is better for color fastness, shade consistency and lower dyeing load, especially in black and dark colors. Conventional dyeing is more flexible for many shades in small quantities.
  • Q: How good is the color fastness of dope dyed yarn?
  • A: Washing, rubbing and perspiration fastness are typically grade 4 to 5, and light fastness typically grade 5 to 7 depending on the pigment and shade. We can set target grades per order.
  • Q: Can you match my Pantone color or physical sample?
  • A: Yes. Send a Pantone reference or a physical sample and we will make a lab color match. The color is approved by you before bulk production.
  • Q: What is the minimum order for a custom color?
  • A: A custom color usually starts from 1 metric ton because it needs a dedicated masterbatch and spinning run. Black and repeat colors can be more flexible.
  • Q: Can dope dyed polyester yarn be over-dyed later?
  • A: Generally no. Once the pigment is fixed in the fiber, the shade cannot be changed by conventional dyeing, so confirm the final color before ordering.
  • Q: Do you offer dope dyed recycled polyester yarn?
  • A: Yes. Dope dyed recycled polyester is available in the common denier range, and recycled-content documents for certified lots can be arranged on request.
  • Q: How do you keep color consistent between lots?
  • A: We control masterbatch dosage, check each lot with a color-difference measurement against the approved standard, and keep retained samples for later comparison.
About
GC FIBER
GC FIBER has been a special textile factory in China since 2006 years. We are devoted to researching, developing, producing, and selling special and functional eco-friendly textile products.
Our products include Biodegradable Yarn, Low Melting Yarn, ECDP Yarn, Anti Static Yarn, HDPE Yarn, Bio-component Yarn, and Polyester Filament Yarn.
We are always interested in cooperating with our guests to develop new material.

WHY WE ARE SO TRUSTED

We have got a high reputation in both domestic and overseas markets.

Professional

We will communicate with customers professionally, listen to their opinions and give useful suggestions, and spend time and energy to solve every problem, no matter all the problems you encounter.

Quality

We have strict quality control requirements and the advanced testing equipment in the industry. Every process has professionals to conduct inspections to ensure product quality.

Cost

We have a number of production lines, a number of production machines, comprehensively improve product quality and production efficiency.

Design and R&D

We devote to research, development, production and sales of special and functional eco-friendly textile product.

Diversity

Our product includes PBS biodegradable product, recycled easy dyeing cationic yarn, PLA yarn, Low melting yarn, Anti-Static yarn ,PBS fiber, PLA fiber, FR nylon fiber etc.

Capacity

The company has sufficient production capacity and high control over raw material prices, quality and stable supply, which can meet the needs of customers with different procurement volumes.

Service

We insist on timely and fast service, the implementation of all-weather tracking service, adequate spare parts inventory, so that our customers have no worries.

Shipment

We are near Ningbo Port and Shanghai Port, and are very convenient and quick to transport cargo to other national capitals.

Diversified Professional Team

GC FIBER has unique sales, research and development, design, production departments and expertise to provide customers and stakeholders in various industries with specialty, functional and environmentally friendly textiles.

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