Traditional grey fabric pretreatment equipment often adopts high-temperature steaming reaction mode, which requires continuous heat supply during operation, resulting in high energy consumption. Moreover, the equipment structure is complex and requires a large footprint, making it unsuitable for flexible production needs of small and medium batches and multiple product categories. Cold pad-batch machines rely on the principle of ambient temperature static reaction to complete the desizing, scouring, and compound pretreatment of cotton and linen grey fabrics, providing a lightweight and low-energy processing solution for fabric pretreatment, and adapting to the pretreatment needs of various shuttle-woven grey fabrics.
The equipment operates with a simple and efficient process. The grey fabric first passes through the padding unit, where it is uniformly impregnated with a well-prepared composite working solution under the controlled pressure of the roller. This ensures that the desizing and scouring auxiliaries evenly cover the surface layer and the interior of the fibers. After the padding process, the automatic cloth winding mechanism neatly rolls up the grey fabric into a sealed cloth roll, preventing the solution from evaporating and the fabric from drying out. The cloth roll is then left to stand at room temperature, relying on the slow-release reaction of the chemicals to gradually decompose impurities such as sizing, pectin, and wax on the surface of the grey fabric.
After the reaction has been allowed to stand for the set duration, the grey fabric is sent to the supporting water washing unit. Through multiple water washing processes, impurities, decomposition products, and residual chemicals are rinsed off, completing the entire pretreatment process. The equipment does not require high-temperature heating or high-pressure steaming structures. The machine is compact in layout, occupies a small area, and has simple equipment operation and maintenance procedures. During production, workers can flexibly adjust the padding rate and stacking duration according to the thickness of the grey fabric slurry and the material of the fabric, adapting to different process requirements. The low-temperature processing mode does not cause high-temperature damage to the fibers, preserving the original hand feel of the fabric. It is suitable for the pretreatment production of differentiated fabrics in multiple batches and small quantities.