TH-141A Vertical bilateral dyeing machine

TH-141A Vertical Bilateral Dyeing Machine for Leather Edge Finishing

The TH-141A Vertical bilateral dyeing machine is a specialized precision tool designed for the simultaneous edge oiling of strip-shaped leather products such as belts, shoulder straps, and edge strips. This Vertical dyeing machine utilizes a dual-wheel synchronous system and arc-shaped toothed wheels to ensure a uniform, high-speed coloring process that meets the aesthetic and durability standards of professional leather goods manufacturing.

In the production of high-end handbags and footwear, edge finishing is a technical step that defines the final quality of the product. Manual edge oiling is often inconsistent and time-consuming, leading to drips or uneven thickness. The Bilateral dyeing machine addresses these challenges by processing both edges of a strip in a single pass. This ensures that the color saturation and oil thickness remain identical on both sides, which is required for maintaining brand consistency in B2B production environments.

Technical Principles and Mechanical Advantages

The efficiency of this dyeing machine lies in its synchronous coloring mechanism. Unlike horizontal models, the vertical layout of this equipment allows for a more compact footprint and easier material guidance for long strips. The unit is engineered to handle various edge oil viscosities, providing manufacturers with the flexibility to use different chemical formulations depending on the leather type.

• Arc-Shaped Toothed Structure: The coloring wheels are specifically designed with an arc-shaped tooth pattern. This geometry allows the oil to be distributed evenly across the leather edge, even if the material has slight thickness variations.
• Dual-Wheel Synchronization: Both sides of the Vertical bilateral dyeing machine operate at the same speed. This prevents the leather from twisting or stretching during the coloring process, ensuring the strip remains flat and the oil is applied without skips.
• Adjustable Width: Manufacturers can adjust the coloring width from 5mm to 50mm. This range makes the Vertical dyeing machine versatile enough to handle everything from narrow watch straps to wide luggage belts.

For example, a factory producing leather belts can set the equipment to a specific width and process hundreds of meters of material per hour. The consistency provided by the Bilateral dyeing machine reduces the need for manual touch-ups, which lowers the overall labor cost per unit.

Technical Specifications

When integrating a dyeing machine into a production line, it is useful to consider the viscosity of the edge oil used. The TH-141A is designed to work with standard water-based or solvent-based edge paints, but the adjustment of the wheel gap is needed to prevent overflow or dry spots.

Application Range and Material Suitability

The Vertical dyeing machine is primarily intended for strip-shaped leather goods, but its application extends to various synthetic materials and composite edge strips.

1. Leather Goods: Belts, handbag shoulder straps, and wallet edge reinforcements.
2. Footwear: Decorative leather strips used in boots or casual shoes.
3. Accessories: Camera straps, pet leashes, and luggage tags.

In a professional workshop, the Bilateral dyeing machine is typically placed after the edge skiving and polishing stations. Once the leather edge is smooth, the equipment applies the base coat or final color. Because the dyeing machine operates at a constant speed, the drying time for the edges becomes more predictable, allowing for better scheduling of the subsequent drying and buffing stages.

Tenghong Manufacturing Excellence

This Vertical bilateral dyeing machine is manufactured by Guangdong Tenghong Machinery Technology Co., Ltd., based in Houjie Town, Dongguan. Since 2000, Tenghong has focused on the R&D and production of shoe machinery and leather processing equipment. The company’s expertise in the "Bags And Leather Series" ensures that every Vertical dyeing machine is built to withstand the rigors of industrial use.

Tenghong operates a 15,000㎡ production base and maintains an export network covering over 26 countries. Our commitment to ISO9001 and GBT19001 quality management systems means that the components used in our equipment—from the motor to the precision-machined coloring wheels—undergo strict quality control. For international buyers, this background translates to better spare parts availability and more reliable technical guidance.

Maintenance and Operational Best Practices

To maintain the performance of the Bilateral dyeing machine, regular cleaning is a foundational requirement. Edge oil can dry quickly and clog the toothed wheels or the oil reservoir.

• Daily Cleaning: After each shift, the oil tank and coloring wheels must be cleaned with the appropriate solvent to prevent hardening of the paint inside the dyeing machine.
• Wheel Inspection: Periodically check the arc-shaped teeth for wear. Worn teeth on the Vertical bilateral dyeing machine will lead to uneven oil distribution.
• Lubrication: The internal transmission parts should be lubricated according to the manual to ensure the 120W motor operates without unnecessary load.

If the coloring becomes uneven, operators should first check if the material width matches the current setting. If the width is correct, the next step is to check the oil level in the reservoir and the cleanliness of the toothed wheels to ensure the system is functioning as intended.

Purchase and Integration Guidance

Before purchasing a unit, buyers should verify their material thickness and the type of edge oil they intend to use. While the width adjustment is straightforward, the thickness of the leather affects how the arc-shaped wheels grip the edge. Tenghong recommends sending material samples for testing to ensure that the Vertical dyeing machine is calibrated for your specific production needs. This ensures the output aligns with the quality standards of high-end leather collections.

The TH-141A is a functional investment for factories seeking to automate the edge coloring process. By combining synchronous dual-side application with a space-saving design, this dyeing machine delivers the consistency and speed required for modern leather goods manufacturing.