{"id":2774,"date":"2025-08-09T10:36:11","date_gmt":"2025-08-09T10:36:11","guid":{"rendered":"https:\/\/www.bluelakechem.com\/?p=2774"},"modified":"2025-08-09T10:36:16","modified_gmt":"2025-08-09T10:36:16","slug":"caustic-soda-in-cotton-yarn-processing","status":"publish","type":"post","link":"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/","title":{"rendered":"What Role Does Caustic Soda Play in Cotton Yarn Processing to Remove Impurities and Enhance Dyeing Quality?"},"content":{"rendered":"<p>In cotton yarn manufacturing, natural and artificial impurities in raw cotton can severely impact dyeing and finishing performance.\u00a0<strong>Caustic soda (sodium hydroxide, NaOH)<\/strong> plays a vital role in the <strong>boiling and scouring<\/strong> stage of pretreatment, effectively removing impurities, improving dyeing ability, and boosting processing efficiency.<\/p>\n\n\n\n<p>This article explains the key functions of caustic soda in cotton yarn pretreatment\u00a0and recommends <strong>BLUELAKECHEM 11017 <a href=\"https:\/\/www.bluelakechem.com\/hi\/product\/high-concentration-degreasing-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">Alkali-resistant Degreasing &amp; Wetting Agent<\/a>,<\/strong> to improve the pretreatment effect.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality.webp\" alt=\"The Role of Caustic Soda in Processing of Cotton Yarn ---- Effectively Removes Impurities and Improves Dyeing Quality\" class=\"wp-image-2775\" srcset=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality.webp 1920w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-300x169.webp 300w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-768x432.webp 768w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-18x10.webp 18w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1200x675.webp 1200w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-600x338.webp 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n<\/div>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0935\u093f\u0937\u092f\u0938\u0942\u091a\u0940<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u0938\u093e\u092e\u0917\u094d\u0930\u0940 \u0924\u093e\u0932\u093f\u0915\u093e \u091f\u0949\u0917\u0932 \u0915\u0930\u0947\u0902\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u091f\u0949\u0917\u0932<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#Impurity_Challenges_in_the_Pretreatment_of_Cotton_Yarns\" >Impurity Challenges in the Pretreatment of Cotton Yarns<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#Role_of_Caustic_Soda_in_Boiling_Scouring\" >Role of Caustic Soda in Boiling &amp; Scouring<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#Typical_Process_Parameter_of_Caustic_Soda\" >Typical Process Parameter\u00a0of Caustic Soda<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#Suggestions_on_Environmental_Protection_and_Wastewater_Treatment\" >Suggestions on Environmental Protection and Wastewater Treatment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#Boosting_Caustic_Soda_Efficiency_with_BLUELAKECHEM_11017_Alkali-resistant_Degreasing_Wetting_Agent\" >Boosting Caustic Soda Efficiency with BLUELAKECHEM 11017 Alkali-resistant Degreasing &amp; Wetting Agent<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.bluelakechem.com\/hi\/caustic-soda-in-cotton-yarn-processing\/#About_BLUELAKECHEM\" >BLUELAKECHEM \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Impurity_Challenges_in_the_Pretreatment_of_Cotton_Yarns\"><\/span>Impurity Challenges in the Pretreatment of Cotton Yarns<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Untreated raw cotton contains a large amount of non-cellulose components. If these components are not removed, they will cause the following problems during the dyeing and finishing process:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Residual cottonseed hulls: <\/strong>Residues from the cotton ginning process&nbsp;adhere to the yarns.<\/li>\n\n\n\n<li><strong>Natural wax and pectin: <\/strong>Adhere to the surface of cotton fiber, decreasing hydrophilicity.<\/li>\n\n\n\n<li><strong>Protein and mineral components:&nbsp;<\/strong>Interfere with the chemical reactions during the dyeing process.<\/li>\n\n\n\n<li><strong>Residues of sizing agents,<\/strong> Such as starch, PVA, and CMC etc., added in the weaving process, need to be removed before the dyeing process.<\/li>\n<\/ul>\n\n\n\n<p>If these impurities are not completely removed, it will lead to the following dyeing and finishing defects:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Uneven dyeing is a dyeing defect.<\/li>\n\n\n\n<li>Fixing the rate of dye decrease.<\/li>\n\n\n\n<li>Finished products have poor brightness and a rough handle.<\/li>\n\n\n\n<li>There is secondary pollution&nbsp;in the finishing process.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Role_of_Caustic_Soda_in_Boiling_Scouring\"><\/span>Role of Caustic Soda in Boiling &amp; Scouring<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>As a strong alkali,&nbsp;<strong>caustic soda <\/strong>is widely used in the boiling and scouring process&nbsp;in the pretreatment of textiles. It has the following main functions:<\/p>\n\n\n\n<p><strong><strong>1.\u00a0Efficiently removes\u00a0wax and pectin<\/strong><\/strong><br>Caustic soda can have\u00a0saponification with the natural wax on the surface of fibers\u00a0to convert\u00a0hydrophobic substances into water-soluble soaps, thereby imparting\u00a0cotton yarns good hydrophilicity and laying\u00a0a\u00a0foundation for even\u00a0dyeing.<\/p>\n\n\n\n<p><strong>2. Change structure<\/strong><br>For cotton fabrics or yarns containing starchy, PVA or CMC sizing agents, caustic soda can destroy their molecular structure, promote their dissolution and removal, and ensure the consistency of subsequent dyeing and finishing.<\/p>\n\n\n\n<p><strong>3. Softens\u00a0and removes\u00a0the cottonseed hulls and organic impurities<\/strong><br>Caustic soda can penetrate into the interior of fibers\u00a0to soften and disperse impurities such as embedded cottonseed hulls, so as to improve cleaning efficiency and reduce physical residues.<\/p>\n\n\n\n<p><strong>4. Promotes\u00a0swelling of fibers\u00a0and enhances\u00a0liquid absorption<\/strong><br>During the alkali\u00a0solution treatment process, cotton fibers expand, the fiber\u00a0surface area increases and porosity rises, significantly enhancing their absorption capacity for water and dyes, which is conducive to achieving a deep\u00a0and\u00a0even\u00a0dyeing effect.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Typical_Process_Parameter_of_Caustic_Soda\"><\/span>Typical Process Parameter\u00a0of Caustic Soda<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Technological Parameter<\/strong><strong><\/strong><\/td><td><strong>Recommended range<\/strong><strong><\/strong><\/td><\/tr><tr><td>Dosage of caustic soda<\/td><td>4~10 g\/L&nbsp;(Specific dosage is according to the condition of yarns and impurities.)<\/td><\/tr><tr><td>Temperature<\/td><td>95~100\u00b0C<\/td><\/tr><tr><td>Time of processing<\/td><td>30~60 minutes<\/td><\/tr><tr><td>Wetting agent (optional)<\/td><td>For enhancing wetting performance and improving treating effect<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><em><strong>\u091f\u093f\u092a\u094d\u092a\u0923\u0940<\/strong>: Specific parameters should be adjusted and optimized according to the type, structure, and dyeing requirements of the cotton yarn.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Suggestions_on_Environmental_Protection_and_Wastewater_Treatment\"><\/span>Suggestions on Environmental Protection and Wastewater Treatment<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The wastewater generated during the caustic soda treatment process usually has high alkalinity and organic loading.&nbsp;Enterprises need to establish effective neutralization and biochemical treatment systems to ensure that emissions meet standards.&nbsp;At present, many dyeing mills&nbsp;are gradually using biodegradable auxiliaries together with&nbsp;caustic soda to reduce the environmental burden and enhance the green sustainability of the process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Boosting_Caustic_Soda_Efficiency_with_BLUELAKECHEM_11017_Alkali-resistant_Degreasing_Wetting_Agent\"><\/span>Boosting Caustic Soda Efficiency with BLUELAKECHEM 11017 Alkali-resistant Degreasing &amp; Wetting Agent<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In order to further improve the cleaning effect of caustic soda boiling and scouring, it is recommended to use it together with <strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/product\/high-concentration-degreasing-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">BLUELAKECHEM&nbsp;11017 Alkali-resistant Degreasing &amp; Wetting Agent<\/a><\/strong>. This product is compounded by multiple surfactants, which have triple functions of degreasing, removing waxes and wetting. It is especially suitable for the desizing, boiling and scouring and bleaching process for cotton and cotton blends.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key features:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improves the capillary effect&nbsp;and wetting performance of the fabric surface.<\/li>\n\n\n\n<li>Reduces waste of dyes.<\/li>\n\n\n\n<li>Improves printing effect.<\/li>\n\n\n\n<li>High stability. Good compatibility.<\/li>\n\n\n\n<li>Low foaming. Easy to wash. Saves water.<\/li>\n\n\n\n<li>Strong alkali resistance. Keeps stable in 100g\/L alkalinity.<\/li>\n\n\n\n<li>No APEO. Environmentally-friendly.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bluelakechem.com\/hi\/product\/high-concentration-degreasing-agent\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img decoding=\"async\" width=\"1363\" height=\"1701\" src=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2.webp\" alt=\"The Role of Caustic Soda in Processing of Cotton Yarn ---- Effectively Removes Impurities and Improves Dyeing Quality\" class=\"wp-image-2776\" srcset=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2.webp 1363w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2-240x300.webp 240w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2-768x958.webp 768w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2-10x12.webp 10w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2-1200x1498.webp 1200w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-2-600x749.webp 600w\" sizes=\"(max-width: 1363px) 100vw, 1363px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bluelakechem.com\/hi\/product\/high-concentration-degreasing-agent\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img decoding=\"async\" width=\"1363\" height=\"1701\" src=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1.webp\" alt=\"The Role of Caustic Soda in Processing of Cotton Yarn ---- Effectively Removes Impurities and Improves Dyeing Quality\" class=\"wp-image-2777\" srcset=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1.webp 1363w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1-240x300.webp 240w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1-768x958.webp 768w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1-10x12.webp 10w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1-1200x1498.webp 1200w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/07\/The-Role-of-Caustic-Soda-in-Processing-of-Cotton-Yarn-Effectively-Removes-Impurities-and-Improves-Dyeing-Quality-1-600x749.webp 600w\" sizes=\"(max-width: 1363px) 100vw, 1363px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Recommended Usage:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Batch method:<\/strong> Dosage: 0.5~1.5 g\/L, use with alkaline agent\u00a0(such as sodium carbonate), 85\u2103\u00d7<br>30~50 minutes<\/li>\n\n\n\n<li><strong>Continuous method: <\/strong>Dosage: 2.0~5.0 g\/L, suitable for open-width degreasing and desizing washing equipment.<\/li>\n<\/ul>\n\n\n\n<p>By using <strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/product\/high-concentration-degreasing-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">11017 degreasing agent<\/a><\/strong> with caustic soda, the dyeing mill can obviously improve the effect of removing impurities for cotton, shorten the time of processing, and improve dyeing consistency. It helps to establish a high-efficiency and environmentally friendly pretreatment process for cotton yarns.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"About_BLUELAKECHEM\"><\/span>BLUELAKECHEM \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u092c\u094d\u0932\u0942\u090f\u0932\u0947\u0915\u0947\u092e<\/a><\/strong>&nbsp;is focusing on providing high-performance and environmentally-friendly textile auxiliaries solutions.&nbsp;Our products include <strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/process\/degreasing-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0921\u0940\u0917\u094d\u0930\u0940\u091c\u093f\u0902\u0917 \u090f\u091c\u0947\u0902\u091f<\/a><\/strong>, <strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/process\/sequestering-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">sequestering and dispersing agent<\/a><\/strong>, <strong><a href=\"https:\/\/www.bluelakechem.com\/hi\/process\/textile-wetting-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">wetting agent <\/a><\/strong>\u0914\u0930<strong> <a href=\"https:\/\/www.bluelakechem.com\/hi\/process\/disperse-leveling-agent\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0938\u092e\u0924\u0932\u0940\u0915\u0930\u0923 \u090f\u091c\u0947\u0902\u091f<\/a><\/strong>, etc., which are widely applied in pretreatment, dyeing and finishing processes for fibers.<\/p>\n\n\n\n<p>If you have more demands for<strong> <a href=\"https:\/\/www.bluelakechem.com\/hi\/process\/pretreatment-auxiliaries\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u092a\u0942\u0930\u094d\u0935 \u0909\u092a\u091a\u093e\u0930 \u0938\u0939\u093e\u092f\u0915<\/a><\/strong>, <strong>please feel free to<a href=\"https:\/\/api.whatsapp.com\/send?phone=8618946995563\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"> contact&nbsp;us. <\/a><\/strong>We will provide you with customized technical support and product suggestions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bluelakechem.com\/hi\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img decoding=\"async\" width=\"1248\" height=\"678\" src=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory.webp\" alt=\"Bluelakechem Factory\" class=\"wp-image-1897\" srcset=\"https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory.webp 1248w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory-300x163.webp 300w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory-768x417.webp 768w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory-18x10.webp 18w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory-1200x652.webp 1200w, https:\/\/www.bluelakechem.com\/wp-content\/uploads\/2025\/04\/Bluelakechem-Factory-600x326.webp 600w\" sizes=\"(max-width: 1248px) 100vw, 1248px\" \/><\/a><\/figure>","protected":false},"excerpt":{"rendered":"<p>In cotton yarn manufacturing, natural and artificial impurities in raw cotton can severely impact dyeing and finishing performance.\u00a0Caustic soda (sodium hydroxide, NaOH) plays a vital role in the boiling and scouring stage of pretreatment, effectively removing impurities, improving dyeing ability, and boosting processing efficiency. This article explains the key functions of caustic soda in cotton [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2775,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,16],"tags":[],"class_list":["post-2774","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","category-blogs-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/posts\/2774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/comments?post=2774"}],"version-history":[{"count":0,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/posts\/2774\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/media\/2775"}],"wp:attachment":[{"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/media?parent=2774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/categories?post=2774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bluelakechem.com\/hi\/wp-json\/wp\/v2\/tags?post=2774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}