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Dyeing & Finishing

Dyeing & Finishing Introduction

Dyeing and finishing is a core mid-stream process in Dongsheng Carpet’s full industrial chain. Taking over white yarn from the wool spinning process, it endows yarn with accurate color, stable color fastness and customized protective properties through eco-friendly dyeing and functional finishing. It provides batch-consistent and performance-stable dyed yarn for subsequent carpet weaving and finished product finishing, serving as a key process that determines the color reproduction, weather resistance, functionality and long-term service stability of carpets.  

Strategic Value
Independent color matching and sampling capabilities enable rapid response to market trends, development of customized color solutions, support for product design innovation and building of differentiated product competitiveness.
Independent control of dyeing processes eliminates risks of color difference and poor color fastness from external dyeing at the source, ensures the quality stability of finished carpets and improves customer satisfaction.
Environmentally friendly dyeing processes and compliance standards meet environmental and safety requirements of global markets, helping the company achieve sustainable development goals.
Coordination with upstream and downstream stages enables full-chain production rhythm alignment, reduces waiting time between steps, improves overall production efficiency and lowers delivery risk.
Dyeing and Finishing Process Flow
Each step of our dyeing process simultaneously controls colour results and yarn performance, ensuring dyed yarn can smoothly adapt to subsequent steps such as high speed weaving and avoiding process interface risks.
01
Precise Color Matching and Lab Dip Sampling
Carry out computer color matching and lab dip sampling per customer requirements or design plans to accurately match the target color number. Verify the dyeing adaptability of different fiber blends and yarn counts simultaneously, optimize process parameters in advance, and ensure color reproduction in mass production.
02
White Yarn Receiving and Pre-treatment
Take over white yarn from the wool spinning process, optimize fiber hydrophilicity and provide a uniform coloring base for subsequent dyeing.
03
Eco-friendly Dyeing Process
Adopt a low liquor ratio dyeing process with precise control over dye concentration, temperature and time to achieve uniform coloring inside and outside the yarn, reduce color difference and dye streaking, lower water and energy consumption, and balance environmental protection and efficiency.
04
Color Fixation and Washing Finishing
Conduct color fixation and washing after dyeing to remove loose color and residual auxiliaries, improve yarn color fastness, avoid fading and color transfer in later weaving or use, and optimize yarn hand feel and cleanliness.
05
Functional Finishing (Optional)
Apply customized functional treatments to dyed yarn per different scenario needs, such as moth-proofing and anti-static properties, to meet the strict usage requirements of public spaces including hotels and transit facilities.
06
Low-Temperature Drying, Set, Inspection & Warehousing
Process the finished dyed yarn with low-temperature drying and set to stabilize yarn moisture regain and twist, prevent shrinkage and deformation in subsequent processes. Complete full inspections covering color difference, color fastness and strength. Qualified dyed yarn is sorted and warehoused, ready for direct entry into subsequent production.
Quality Control Standards
 Raw Material Suitability Standards
Undyed wool yarn must meet requirements for even sliver and stable strength, ensuring no yarn breakage or uneven colour take‑up during dyeing.
Dyeing process optimisation for different fibre blends (pure wool / blended), adjusting dye and chemical formulations in advance to guarantee colour reproduction on different material yarns.
Environmental Standards
Dyes meet environmental requirements, no banned dyestuffs or hazardous residues, suitable for compliance needs of global markets.

Core Dyeing Internal Control Standards

Test Item

Internal Control Standard

Related Subsequent Process / Finished Product Performance

 Color difference

Batch color difference ≥ Grade 3-4

Ensures no obvious color deviation in subsequent weaving;

Avoids uneven color or large color differences on finished carpet

Color Fastness Index

Dry rubbing color fastness ≥ Grade 3-4
Wet rubbing color fastness ≥ Grade 3
Light fastness ≥ Grade 4

Ensures carpet does not fade or bleed with long term use;

Suitable for high frequency use in public spaces

Dyeing uniformity

No obvious color difference between inner and outer layers of yarn, no "white core"

Avoids uneven color and ensures long-term aesthetics of finished carpets

Customization Capabilities

With mature dyeing and finishing lines, we support customised services, quickly responding to small-batch color lab dips to meet customer specific color requirements. For custom colors or bulk production needs, contact our dedicated consultant directly for sample solutions and accurate quotes.

Professional Carpet Manufacturing & Customized Weaving
In addition to dyeing and finishing, we have mature processing capabilities in spinning, customized weaving, and final finishing. Click the modules below to view the corresponding production details.
Wool Spinning & Raw Material Preparation
Dongsheng strictly controls raw wool quality at source, using premium New Zealand wool. Yarn specs and blends are customized. Advanced spinning ensures strong, uniform yarn — a solid foundation for high-quality carpets.
Chemical Fiber Spinning
We produce PP BCF, nylon BCF, and heat-set yarns for carpets. With world-class equipment, we customize twist, elasticity, and stability to suit diverse weaving needs. This minimizes defects and ensures high-efficiency mass production.
Carpet Weaving
Dongsheng operates 49 world-class weaving lines (Axminster, Wilton, tufted, printed). Advanced looms and digital printers deliver complex patterns and massive volumes, catering to premium hotel customizations and large-scale distributor orders.
Final Finishing
We operate an automated finishing line with world-class equipment for cutting, binding, shearing, and packing. 4-aspect inspections (appearance, dimensions, performance, eco-safety) ensure superior flatness, pile texture, and stability, meeting global standards.
Feel Free to Contact Us

If you have any questions about our products or services, feel free to reach out to customer service team.

Give Us A Call
+86 15376335686
Send Us An Email
mj@dongsheng.com
One-Stop Carpet Solution Provider
Custom Carpet Solutions for Every Space — Covering Hotels, Offices, Commercial Spaces, Homes, and Beyond
Contact Us
Phone/WhatsApp: +86 15376335686
Address: South of Shanhai 2 Road, West of Chaoshi Road, Rizhao, Shandong, China
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