MACHINE NAME: COARSE SHAFT DYEING MACHINE 

MODEL NO: TH-141B

BRAND: TENGHONG  

FEATURES

1. This product is suitable for oil edge dyeing of leather goods, wristbands, straps, leather accessories, fabrics, substrates, and other products.

TECHNICAL PARAMETER

1. Power           : 50W
2. Voltage         : 220V
3. Weight          : 24Kg
4. Dimension     : 420x330x300mm 

The TH-141B Coarse Shaft Dyeing Machine is a state-of-the-art industrial dyeing solution engineered specifically for the treatment and dyeing of coarse yarns, heavy textiles, and materials wound onto shafts or spindles. Built with advanced technological features and durable mechanical systems, this dyeing machine caters to the evolving needs of the modern textile manufacturing industry. It excels in precision dyeing applications where uniform penetration, fiber care, and production efficiency are essential. This machine is ideal for medium to large-scale dye houses that demand high throughput, consistent dyeing quality, and low operational overhead. Designed with robustness, flexibility, and energy efficiency in mind, the TH-141B handles a wide variety of yarns and substrates, making it a preferred choice for wool, acrylic, polyester, and technical yarns that require special attention during processing.

Overview and Purpose

The TH-141B is designed to address a critical need in the textile processing industry: uniform and high-quality dyeing of coarse yarns and dense packages mounted on shafts. Unlike soft yarn packages that allow easy dye liquor flow, coarse yarns present challenges due to their thickness and tight winding. This machine ensures that such material receives uniform color penetration without compromising on production speed or fiber integrity. Its primary function is to deliver consistent, uniform, and reproducible dyeing results, even with difficult-to-dye yarns. This machine is typically used in dye houses, textile factories, wool processing units, and synthetic yarn preparation units, where quality consistency and operational cost management are key priorities.

Structural and Functional Design

The TH-141B features a rugged stainless steel dyeing chamber, capable of withstanding high temperatures and pressures commonly required in dyeing coarse materials. The entire structure is made of corrosion-resistant alloys, ensuring a long operational life even under continuous use and exposure to aggressive dye chemicals. Inside the chamber, specially designed shaft holders or mandrels accommodate the yarn-wrapped shafts. These holders are engineered for maximum fluid flow and structural support, preventing shaft displacement during high-speed circulation. A high-performance main pump, supported by a reversible flow mechanism, ensures that the dye liquor thoroughly penetrates the yarn packages, evenly dyeing both the core and the outer layers of each shaft. The lid or access hatch is equipped with industrial-grade sealing gaskets and automatic locking mechanisms to ensure leak-proof operation, especially when the machine is working under pressurized or high-temperature conditions. The inspection windows, drain valves, and sampling ports allow the operator to monitor and test the dyeing process without halting production.

Control System and Automation

A standout feature of the TH-141B is its intelligent process control system, which brings precision and consistency to every dyeing operation. The system is driven by a programmable logic controller (PLC), which monitors, manages, and automates the entire dyeing cycle—from filling to heating, dye injection, circulation, cooling, and draining. Operators can input and save multiple recipes for various yarn types and production specifications. These recipes include parameters such as:

• Temperature rise profile

• Dye liquor ratio

• Flow direction intervals

• Chemical dosing schedules

• Holding times at target temperatures

• Rinse and cooling cycles

The intuitive touchscreen interface allows operators to manage the process in real time, adjust parameters on the fly, and respond to alerts or warnings as needed. For quality assurance and traceability, the system can log batch data, which can be downloaded or connected to a factory’s central monitoring system via Ethernet or wireless connectivity. Optional IoT integration is available for remote diagnostics, predictive maintenance alerts, and centralized production management, making this machine ready for Industry 4.0-enabled environments.

Energy Efficiency and Environmental Compliance

In today’s dyeing industry, sustainability is as important as productivity. The TH-141B addresses environmental and cost concerns by incorporating a range of energy-saving and water-saving technologies. The low liquor ratio design allows the machine to dye yarns using significantly less water than conventional machines. This is particularly important in regions where water resources are scarce or wastewater treatment is costly. Depending on yarn type and batch size, the liquor ratio can be set as low as 1:5, without compromising dyeing quality. To reduce energy consumption, the machine is equipped with a high-efficiency heat exchanger that recovers heat from outgoing effluent and uses it to preheat incoming water. This closed-loop system can significantly reduce energy costs over time, especially in facilities that run multiple cycles per day . Moreover, the chemical dosing and rinsing systems are optimized to reduce chemical usage and shorten process times, minimizing environmental impact while maintaining top-tier quality results. Optional modules for water reuse and effluent management can also be integrated into the system, further improving sustainability scores and enabling compliance with national and international environmental standards.

Safety Features

Safety in operation is a critical aspect of the TH-141B design. The machine is equipped with a robust set of safety features to protect both the operators and the equipment itself:

• Pressure release valves that automatically activate if internal pressure exceeds safe levels.

• Over-temperature protection to prevent damage to yarn or equipment due to overheating.

• Emergency stop controls that are easily accessible and strategically located.

• Automatic lid-locking system to prevent the door from opening while the chamber is under pressure.

• Alarm systems and notifications that alert operators to irregularities in temperature, pressure, or flow.

These features not only ensure compliance with CE and ISO safety standards but also create a safer working environment for operators and technicians, reducing the risk of accidents or process failures.

Applications and Compatibility

The TH-141B is engineered to handle a wide variety of yarn types and is adaptable for multiple industries. Some of the common use cases include:

• Wool yarn dyeing: Due to its high density and bulkiness, wool is a prime candidate for coarse shaft dyeing. The TH-141B ensures gentle handling with deep penetration.

• Acrylic yarn processing: Acrylic fibers require precise thermal control, which the TH-141B provides with its accurate temperature profiling.

• Textured polyester yarn: The machine supports delicate yarns that need even dyeing without distortion.

• Carpet and upholstery yarns: Bulkier yarns used in carpets and home textiles benefit from the TH-141B's high-volume flow and uniform treatment.

• Technical textiles: Industrial yarns used in automotive, medical, and defense applications can be reliably processed for uniform coloration and strength retention.

The machine also supports a wide range of shaft sizes and yarn package diameters, allowing for maximum flexibility in production without the need for frequent hardware changes.

Performance and Productivity

Designed for continuous operation in high-demand environments, the TH-141B is capable of processing large volumes of yarn daily. With a cycle time optimized through intelligent control, bi-directional flow, and efficient thermal systems, the machine can complete more batches in less time compared to traditional dyeing systems.

Its high-capacity pump system, paired with a balanced fluid circulation design, reduces dead zones in the dye bath, ensuring all yarn sections are equally exposed to dye liquor. This contributes directly to:

• Shorter process cycles

• Higher throughput

• Reduced reprocessing due to dyeing defects

• Lower downtime between cycles

Additionally, quick-loading/unloading accessories and optional automatic shaft lifters improve operator productivity and ergonomics, ensuring that the machine contributes to an efficient, streamlined production workflow.

Customization Options

Understanding that no two production facilities are the same, the TH-141B can be tailored to meet specific operational needs. Customizable features include:

• Batch sizes and chamber volume depend on production scale

• Pump motor power ratings for different flow rate requirements

• Automatic chemical dosing systems for high-volume operations

• Integrated pre-treatment modules such as scouring and bleaching systems

• Custom shaft designs for non-standard yarn package formats

• Extended temperature and pressure range for technical textiles

• Special corrosion-resistant materials for aggressive dye chemistries

Each machine is built to order and undergoes rigorous quality testing and calibration before delivery, ensuring it meets the exact needs of the end user.

Maintenance and After-Sales Support

To ensure continuous and reliable operation, the TH-141B is designed with maintenance-friendly features. These include:

• Easy access panels for quick inspection and servicing

• Self-cleaning filters that reduce clogging and extend service intervals

• Scheduled maintenance alerts via the control system

• Modular component design to simplify the replacement of critical parts

• Training documentation and operational guides are provided with the machine

The manufacturer offers a comprehensive warranty, including support for spare parts, remote diagnostics, and on-site technical assistance through authorized service agents. Optional training programs are available for operators and maintenance teams to ensure proper handling and longevity of the equipment.

Advantages Over Conventional Dyeing Methods

Compared to traditional package dyeing systems or outdated shaft dyeing models, the TH-141B provides numerous advantages:

• Superior dye uniformity across bulky and dense yarns

• Lower water, chemical, and energy consumption

• Faster changeovers and shorter cycle times

• Enhanced operator safety and comfort

• Improved product consistency and reduced batch rejection

• Modern control and automation features

• Eco-friendly operation with minimal environmental footprint

These attributes combine to make the TH-141B a future-proof investment for textile manufacturers looking to stay ahead in quality, cost-efficiency, and environmental compliance.

The TH-141B Coarse Shaft Dyeing Machine is a flagship solution for modern textile dyeing operations where quality, reliability, and sustainability are key business drivers. From its intelligent process control and high-efficiency dye circulation to its robust construction and safety systems, every aspect of the TH-141B is engineered to deliver superior results with minimal waste and downtime. This machine is not just a piece of equipment—it’s a strategic asset that helps dye houses meet the evolving demands of global markets while adhering to the highest standards of production excellence. Whether you are producing wool yarns for luxury garments, acrylic yarns for winter wear, or technical textiles for industrial use, the TH-141B ensures that your products emerge from the dye bath vibrant, consistent, and ready for the next stage in the textile value chain.