What is the dyeing process of GBM Serial Beam Dyeing Machine?

1. Preparation stage
Grey fabric inspection and preparation: First, check the fabric to ensure the quality of the fabric. Check whether the fabric is damaged, the yarn is uneven, etc. Wind the grey fabric on the warp beam neatly to ensure that the fabric can be evenly exposed to the dye solution during the dyeing process.
Calculate the required amount of dye solution, the type and amount of auxiliaries according to the type of fabric and dyeing requirements.
Dye solution configuration: According to the selected dye formula, accurately weigh the dye and auxiliaries in the material barrel. Stir and dissolve the dye and auxiliaries to make a uniform dye solution. Generally, add the auxiliaries to the water first, adjust the water temperature (for example, when dyeing with reactive dyes, the water temperature may be around 30-60℃), and then add the dye. The stirring speed should be moderate to avoid excessive foaming.
2. Dyeing stage
Cloth feeding and dye solution circulation: Load the warp beam fabric into the dyeing machine and start the dye solution circulation system. The dye solution circulates between the dye vat and the warp beam through the circulation pump, so that the dye solution can fully penetrate into the fabric. The speed and pressure of the cycle should be adjusted according to the density and thickness of the fabric. The temperature of the dye solution is controlled according to the predetermined dyeing temperature rise curve. Taking reactive dye dyeing as an example, there is usually a gradual heating process, starting from a lower temperature (such as around 30°C) and heating up to the dyeing temperature (such as 60°C) at a certain heating rate (such as 1-2°C/min). This process helps the dye to be dyed evenly.
Dyeing time control: Determine the dyeing time according to the color depth requirements of the fabric and the dyeing characteristics of the dye. Generally, the dyeing time for lighter colors may be around 30-60 minutes, while dark colors may take 1-2 hours or even longer. During the dyeing process, constantly observe the changes in the color of the fabric, take out the fabric sample through the sampling port, and match the color.
3. Post-processing stage
Cleaning: After dyeing is completed, the fabric should be cleaned with clean water. Multi-stage countercurrent cleaning can be used to improve cleaning efficiency and reduce water consumption. The purpose of cleaning is to remove unfixed dyes and auxiliaries remaining on the surface and inside of the fabric.
For fabrics dyed with reactive dyes, it is important to control the water temperature during washing to avoid excessive temperature causing dye hydrolysis and affecting dye fastness. Generally, wash with warm water (40 - 50°C) first, and then with cold water.
Fabric discharge and drying: The fabric after post-treatment is taken out of the dyeing machine and then dried. The drying temperature and speed should be adjusted according to the material of the fabric. For cotton fabrics, the drying temperature is generally around 80 - 120°C. It is important to avoid excessive temperature causing the fabric to lose strength or discolor. After drying, the fabric has completed the entire dyeing process and can be subsequently finished.
If you are interested in learning more about the dyeing process of GBM Serial Beam Dyeing Machine, welcome to visit www.chinadyeingmachines.com!