What factors affect the ironing effect of fully-automatic industry ironing machine?

The quality of fabrics during ironing is closely related to many factors, among which steam parameters, mechanical force, fabric characteristics and equipment structure design are key factors.

Steam parameters are the core of ironing effect. The matching of steam pressure and temperature directly affects the plasticization effect of fabric fibers. Studies have shown that when the steam pressure is lower than 0.3MPa, the mobility of fiber molecular chains is limited, and deep wrinkles are difficult to eliminate; when the pressure exceeds 0.6MPa, the fabric surface may be damaged due to overheating. Therefore, the steam temperature needs to be strictly controlled between 160℃ and 180℃, especially for cotton fabrics, a steam temperature of 170℃ can achieve the best ironing effect. Temperature fluctuations exceeding ±5℃ will result in uneven ironing effects. In addition, steam humidity should not be ignored. When the dryness is lower than 95%, water stains are prone to appear on the fabric surface; and excessive humidity may cause the fabric to shrink and deform. Therefore, the fully-automatic industry ironing machine should be equipped with a high-precision steam regulating valve, the flow control accuracy should reach ±2%, and a closed-loop control system should be formed in combination with real-time temperature and humidity sensors to ensure the stability of steam parameters.

The way the mechanical force is applied also has a significant impact on the ironing effect. The uniformity of the linear pressure distribution of the ironing drum is directly related to the flatness of the fabric. For models with differential drum design, the linear pressure difference between the front and rear drums should be controlled within the range of 0.5-1.2N/cm. Excessive pressure difference will cause the fabric to stretch and deform. The matching of the drum diameter and the rotation speed is equally important. For example, a drum with a diameter of 800mm can achieve full contact between the fabric surface and the drum at a linear speed of 3.5m/min. Too fast a rotation speed may result in insufficient steam action time, while too slow a rotation speed will affect production efficiency. In addition, the tension control accuracy of the conveyor belt must reach ±1%. Insufficient tension will cause the fabric to slip, while excessive tension may damage the fabric fibers. Modern fully-automatic industry ironing machines generally use servo motor drive systems to achieve precise synchronization of the drum speed and the conveyor belt speed, ensuring that the synchronization error is controlled within 0.1%.

Fabric properties are also an important basis for determining ironing parameters. The thermoplasticity of different fiber materials varies significantly. For example, polyester fiber begins to soften at 140°C, while wool fiber needs to reach 180°C to achieve effective shaping. The weight of the fabric places higher requirements on steam permeability. Heavy fabrics above 200g/m2 need to use penetrating steam injection technology, and the steam injection pressure should reach above 0.4MPa. In addition, the moisture content of the fabric is also critical. A moisture content of 5%-8% can improve the thermal conductivity of the fiber, while too high or too low a moisture content may lead to poor ironing effect. Therefore, the fully-automatic industry ironing machine needs to be equipped with a fabric recognition system, which uses near-infrared spectroscopy analysis technology to detect fabric composition in real time and automatically adjust ironing parameters to ensure the ironing effect.

The structural design of the equipment directly affects the ironing quality. The mirror treatment process on the drum surface can effectively reduce the friction coefficient of the fabric. The use of chrome-plated drums with a surface roughness of less than 0.3μm can reduce the pilling phenomenon on the fabric surface. In addition, the layout density and angle design of the steam injection holes need to be optimized. The hexagonal arrangement with a hole diameter of 1.2mm and a spacing of 25mm can achieve uniform distribution of steam. The efficiency of the condensate discharge system also directly affects the dryness of the steam. For models using siphon traps, the drainage capacity should reach 1.8 times the steam load, and the drainage delay time should be controlled within 0.3 seconds. The equipment must also be equipped with a pre-shrinking device to effectively eliminate fabric wrinkles through differential feeding technology to ensure that the fabric is flat and new after ironing.