I. Pre-operation Preparation 1. Chemical Pretreatment Dyes and auxiliaries must be fully dissolved and filtered in the chemical tank to prevent undissolved particles from causing color stains or uneve
I. Core Measures to Avoid Edge-Center Color Difference (Left-Center-Right Color Difference) 1. Optimize Equipment Condition Adjust the rack balance: Thin fabrics (such as nylon and polyester taffeta)
I. Recovery Process and Time Allocation 1. Thoroughly Rinse Residual Agents (30-60 minutes) Use plenty of clean water to circulate and rinse the vat until the effluent pH is neutral (pH≈7) to pr
I. Abnormal Operating Signals When the equipment exhibits the following phenomena during operation, it indicates that dirt may have accumulated inside the dye bath, affecting system performance: 1. Si
I. Removal of Oligomers Oligomers easily precipitate and adhere to the cylinder wall at high temperatures, affecting dyeing uniformity. 1. Alkaline washing with NaOH or acidic sulfite detergent can ef
I. Equipment Operational Abnormalities These problems often stem from mechanical wear, control system malfunctions, or inadequate maintenance: 1. Slow Heating/Cooling: Scaling in the heat exchanger or
I. Real-time Status Monitoring Based on Sensor Data Modern liquid flow dyeing machines are widely equipped with various sensors, which serve as the fundamental information source for fault prediction:
I. Standardize operating procedures and eliminate human error. 1. Strictly adhere to standard operating procedures (SOPs). Before each start-up, confirm that the fabric loading is within the equipment
I. Uneven dyeing (color spots, medium thinning, rope marks) This is one of the most common quality problems, manifesting as inconsistent color depth or streaks on the fabric surface. 1. Medium thinnin
I. Daily Maintenance (After each shift or each run) 1. Clean the dyeing tank and nozzles. Immediately after dyeing, drain the dye liquor and rinse the inner wall of the dyeing tank, nozzles, filters,
I. Uneven Dyeing and Color Patches Uneven color distribution or patchy appearance on the dyed fabric is a frequent problem. Insufficient fabric saturation or poor dye liquor circulation leads to uneve
I. Pre-Operation Preparation 1. Personnel and Protection: Operators must receive professional training and wear acid- and alkali-resistant gloves, protective goggles, and work clothes to prevent skin