Why Choose 80°C Low Temperature Bioscouring Agent Instead of Traditional High Temp Scouring Chemicals?

I. Traditional 95-100℃ High-Temperature Refining Process: Current Industry Pain Points

Pre-treatment bioscouring of cotton and polyester-cotton fabrics is a fundamental step in dyeing and printing. The traditional industry process commonly uses 95℃ to 100℃ high-temperature bleaching, combined with ordinary high-temperature bioscouring agents to complete dewaxing, desizing, and removal of pectin and cottonseed hulls.

This mature process is now difficult to meet the demands of dyeing and printing plants for cost reduction, quality improvement, and environmental protection, especially for exported textile garments.

The primary drawback of high-temperature processes is the persistently high energy cost. Prolonged heat preservation and heating consume large amounts of steam and electricity, leading to significant increases in monthly heating expenses for large-scale plants.

Secondly, continuous high temperatures damage the cellulose molecular structure, resulting in decreased fabric strength, high weight loss, and a tendency for creases, yellowing, and batch variations on the fabric surface. Subsequent dyeing processes may result in uneven coloring and insufficient color fastness, leading to defective products.

Simultaneously, high-temperature wastewater discharge has a high temperature and COD load, increasing wastewater treatment costs, and this high-energy-consuming model does not comply with the low-carbon procurement standards of European and American brands.

Amid rising raw material and energy prices and mandatory regulations on green production, the 80℃ low-temperature refining process has become a necessity for dyeing and printing plants to upgrade.

II. Core Mechanism of Action of 80℃ Low-Temperature Bioscouring Agent

Low-Temperature Bioscouring Agent is a compound system of anionic/nonionic surfactants, combined with a special low-temperature hydrogen peroxide activating component and a highly efficient penetrating dispersant. Unlike ordinary auxiliaries that rely on high temperatures above 95℃ for activation, this product is fully effective under stable 80℃ conditions.

The agent rapidly penetrates fiber gaps, emulsifies and decomposes grease and weaving sizing agents in the fabric, and expands and removes natural cotton wax and pectin impurities. Internal dispersing and suspending components lock in the removed contaminants to prevent secondary re-adhesion onto the fabric surface.

It simultaneously stabilizes the hydrogen peroxide bleaching system, completing refining and bleaching in a single bath. The entire reaction system is gentle, requiring no high-temperature catalysis, and fully preserves the fiber’s inherent strength. It is an integrated pretreatment agent suitable for intermittent dyeing vats and long-run pad-steaming processes.

III. Five Core Advantages of 80℃ Low Temperature Bioscouring Agent Compared to Traditional High-Temperature Auxiliaries

Firstly, Significant Energy Saving and Consumption Reduction : Processing temperature is reduced from 98℃ to 80℃, heating time is shortened by 30%, steam consumption is reduced by more than 30%, directly compressing workshop thermal costs.

Secondly, Significantly Improved Fabric Quality : Low-temperature and gentle processing results in less fabric weight loss, more uniform and stable whiteness, a wicking effect of over 13cm, no creases or holes, significantly optimized dyeing evenness, and a markedly reduced defect rate.

Thirdly, Increased Production Efficiency : Holding at 80℃ for 30-60 minutes achieves the same refining effect as traditional high-temperature agents, accelerating single-cylinder turnover and increasing equipment capacity.

Fourthly, Strong Compatibility : Low-foaming formula, compatible with automated feeding equipment, preventing cylinder overflow issues.

Fifthly, Overall Consumable Savings : Refining and bleaching are completed in the same bath, reducing the amount of auxiliary agents added and lowering the cost of chemicals per meter.

IV. Standard Production Process Parameters for 80℃ Low-Temperature Bioscouring Agent (Practical Proportions)

General Intermittent Dyeing Process (Pure Cotton/Polyester-Cotton Knitted and Woven Fabrics):

Low-Temperature Refining Agent: 1.0-2g/L, 100% Caustic Soda: 2-2.5g/L, 100% Hydrogen Peroxide: 1-3g/L.
Heat to 80℃ and hold for 40-60 minutes. After completion, wash with 80℃ hot water to neutralize and remove oxygen before proceeding to the dyeing process.

Long-Roll Pad-Steam Process: After padding with the working solution, steam at 80℃ for 35-50 minutes. The washing process is simplified, and no additional high-temperature section is required. Maintain a stable temperature range of 80℃ throughout the process. Temperatures below 75℃ are not recommended, otherwise the refining and impurity removal effect will decrease.

V. Applicable Fabric Categories and Equipment Scenarios

The 80℃ low-temperature bioscouring agent is suitable for all types of cellulosic fabrics: pure cotton knitwear, woven fabrics, packaged yarns, rayon, polyester-cotton blends, and cotton-linen blends;

It is compatible with mainstream workshop equipment: overflow dyeing machines, spray dyeing machines, roll dyeing machines, and continuous pad-steaming machines, catering to both small and medium-sized dyeing and printing plants and large-scale production lines;

It is suitable for export order fabric processing, including apparel fabrics, home textile greige fabrics, denim semi-finished products, and underwear knitted fabrics.

VI. Environmental Compliance Advantages, Adaptable to Overseas OEKO-TEX Export Orders

Low-temperature bioscouring agent is phosphorus-free, APEO-free, and NPEO-free, readily biodegradable, and the COD of processing wastewater is significantly lower than that of high-temperature process wastewater, reducing wastewater treatment pressure.

Low-temperature processing reduces carbon emissions, meeting the sustainable sourcing and zero-carbon factory audit requirements of overseas brands. Finished products can smoothly pass OEKO-TEX and Bluesign international environmental certification tests, helping textile factories to stably secure large foreign trade orders from Europe, America, and Southeast Asia, and avoiding the risk of order cancellations due to non-compliance with environmental standards.

VII. Conclusion

In summary, the 80℃ low-temperature refining agent is a mature and upgraded auxiliary agent that replaces the traditional 95-100℃ high-temperature refining scheme.

Relying on a stable 80℃ low-temperature reaction system, it combines four core values: energy saving, quality improvement, efficiency enhancement, and environmental protection.

Under stable process parameter control, the dewaxing, desizing, and bleaching effects are fully comparable to high-temperature processes, while significantly reducing factory energy consumption and defect rates. Its environmentally friendly formula meets global textile export standards.

For dyeing and printing enterprises primarily focused on export orders that want to control production costs and upgrade to green production lines, the 80℃ low-temperature refining pretreatment process has extremely high practical value and is currently the preferred solution for reducing costs, increasing efficiency, and enhancing product competitiveness in textile pretreatment.