ALEETEX(CHINA) TECHNOLOGY CO.,LTD

Differences Between High-Temperature High-Pressure Dyeing Machines and Normal-Temperature Atmospheric-Pressure Dyeing Machines 1. Different Working Conditions High-temperature high-pressure dyeing machines:The working temperature is usually above 100℃ (commonly 120-130℃, or even higher), and the working pressure is higher than atmospheric pressure (generally 0.2-0.5MPa, depending on specific temperature requirements). A sealed design is required to maintain the high-temperature and high-pressure environment. Normal-temperature atmospheric-pressure dyeing machines:The working temperature is usually from room temperature to 100℃ (mostly the boiling temperature, i.e., 100℃), and the pressure is atmospheric pressure (1 standard atmosphere). There is no need for a sealed and pressure-resistant design; even an open or simply sealed structure can be adopted. 2. Different Applicable Fibers and Dyes High-temperature high-pressure dyeing machines:They are mainly used for synthetic fibers (such as polyester, nylon, acrylic, etc.). These fibers have a dense structure and strong hydrophobicity, making it difficult for dyes to penetrate at normal temperature. High temperatures (around 130℃) are needed to intensify the movement of fiber molecular chains and increase the gaps, and they are used in conjunction with disperse dyes (special for polyester), acid dyes (special for nylon), etc., to achieve dyeing. Normal-temperature atmospheric-pressure dyeing machines:They are suitable for natural fibers (cotton,flax,wool, silk, etc.) and some regenerated fibers (such as viscose). Natural fibers have strong hydrophilicity. At normal temperature or boiling (100℃), reactive dyes (for cotton,flax), acid dyes (for wool/silk), etc., can complete dyeing through penetration, reaction, or adsorption without the need for high temperature and high pressure.

I. Advantages of the Garment Dyeing Machine 1. High Efficiency and Energy-savingIt adopts an advanced water circulation system and heating technology to reduce the consumption of water and energy, thus lowering the production cost.2. Uniform DyeingThrough mechanical agitation, air flow or water flow circulation, it ensures that the dye penetrates evenly, avoiding the problem of color difference.3. High Degree of AutomationThe programmable control (PLC) system enables precise adjustment of parameters such as temperature, time, and water level, reducing human errors.4. Strong AdaptabilityIt can handle fabrics of different thicknesses and elasticities, such as denim, towels, and sportswear fabrics. II. Main Uses of the Garment Dyeing Machine1. Fabric DyeingIt is used for the dyeing of yarns, fabrics, and ready-made clothes, such as processes with reactive dyes, disperse dyes, and vat dyes.2. Water-washing TreatmentIt is used to remove floating colors, sizing agents or chemical residues on fabrics, improving color fastness and handfeel.3. Post-finishing ProcessingSuch as enzyme washing (aging of denim), softening finishing, antibacterial treatment, etc.4. Laboratory Sample-makingSmall water-washing dyeing machines can be used for process tests to optimize production parameters.

1. According to Dyeing Material Form   Yarn Dyeing Machines Designed for dyeing yarn in various forms (e.g., skeins, cheese cones, packages). Cheese Dyeing Machines: Use cylindrical yarn packages (cheeses) immersed in dye liquor, ideal for uniform dyeing of cotton, polyester, and blends. Skein Dyeing Machines: Process loose yarn skeins in rotating baskets, suitable for specialty fibers like wool or silk. Fabric Dyeing Machines Handle woven or knitted fabrics directly. Jet Dyeing Machines: Use high-pressure dye liquor jets to circulate fabric through a closed system, reducing tension and suitable for delicate materials. Jigger Dyeing Machines: Roll fabric onto a beam immersed in a dye bath, ideal for heavyweight fabrics like denim. Winch Dyeing Machines: Transport fabric through a dye bath using a winch mechanism, suitable for medium to heavy fabrics. Garment Dyeing Machines Dye finished garments, often with stone-washing or distressing effects. Rotary Drum Dyeing Machines: Similar to washing machines, tumbling garments in dye liquor for even coloration.   2. According to Operation Mode   Batch Dyeing Machines Process materials in discrete batches, suitable for small to medium production runs and frequent color changes. E.g., cheese dyeing machines, jiggers, and most garment dyeing systems.   Continuous Dyeing Machines Feed materials through a continuous dyeing line for high-volume production. Pad-Batch Dyeing Machines: Pad fabric with dye, then roll it for batch-wise fixation, balancing efficiency and color variety. Pad-Steam Dyeing Machines: Combine padding with steam fixation for rapid processing, ideal for cotton and cellulosic fibers.   3. According to Dyeing Medium   Water-Based Dyeing Machines The most common type, using water as the dye solvent. Equipped with heating systems to control dyeing temperature (e.g., jet dyeing machines for reactive dyes). Non-Aqueous Dyeing Machines Use alternative solvents (e.g., supercritical CO₂ or organic solvents) for eco-friendly dyeing. Supercritical CO₂ Dyeing Machines: Reduce water usage and eliminate chemical waste, suitable for synthetic fibers.   4. According to Pressure and Temperature   Atmospheric Dyeing Machines Operate at normal pressure (1 atm), suitable for dyes that fix at low temperatures (e.g., acid dyes for wool). High-Pressure Dyeing Machines Operate at pressures above 1 atm (up to 3 atm) and temperatures up to 140°C, ideal for polyester dyeing with disperse dyes to ensure dye penetration.   5. Specialized Dyeing Machines   Print-Dyeing Combined Machines Integrate dyeing and printing functions for patterned fabrics. Eco-Friendly Dyeing Systems Incorporate low-liquor ratio technology or recycling systems to reduce water and chemical consumption. Digital Dyeing Machines Use inkjet technology for precise color application, suitable for customized or small-batch production.