By Baico Biotech 丨 Denim Washing 丨 Baico Bioch-Arpina

Ready-made denim garments available on the market are soft and skin-friendly. However, raw denim fabric is woven from cotton yarn. Sizing is applied to denim during weaving, followed by indigo dyeing. After sizing and dyeing, sizing agents and dyestuffs remain on the fabric surface, leaving the grey fabric coarse, stiff and harsh to the touch.

In conventional finishing processes, massive chemicals and pumice stones are adopted to improve the comfort and fashionable appearance of denim.Meanwhile, a huge volume of water is consumed during finishing, resulting in severe water waste. In addition, pumice stones generate residues during washing, which tend to clog equipment. Friction between pumice stones and washing machines also accelerates equipment abrasion.

BBT Enzyme NEF ®GP3, a neutral granular cellulase developed by Baico Biotech, can effectively solve the pain points of the above conventional processes. First of all, this product operates at low temperatureswith simple processing procedures. It completes denim washing under neutral aqueous conditions of pH 6.0–7.0, a washing temperature of 30–50°C and a treatment duration of 30–50 minutes. The dosage of the cellulase can be flexibly adjusted according to the fabric loading weight of denim. Compared with conventional processes, NEF® GP3 eliminates the separate desizing step, streamlining workflows and greatly improving operational convenience.Secondly, the product integrates desizing and abrasion in one step. It creates light contrast shading and distinct large-area fading patterns on denim. Meanwhile, it further softens fabric hand feel and enhances skin-friendliness.Thirdly, it features eco-friendly and low-carbon performance. There is no need to compound a variety of chemical auxiliaries, which drastically cuts down water consumption during rinsing. In addition, this cellulase replaces pumice stones for fading treatment, reducing equipment abrasion and wear.

In summary, NEF® GP3 delivers green and high-efficiency performance while lowering the overall comprehensive production cost of denim washing. Itprovides denim washing manufacturers with a more convenient, cost-effective processing solution.

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