{"id":4379,"date":"2026-07-29T08:43:09","date_gmt":"2026-07-29T08:43:09","guid":{"rendered":"https:\/\/fsxchemical.com\/?p=4379"},"modified":"2026-10-25T06:36:43","modified_gmt":"2026-10-25T06:36:43","slug":"%d9%b9%db%8c%da%a9%d8%b3%d9%b9%d8%a7%d8%a6%d9%84-%d8%b3%d8%a7%d8%a6%d8%b2%d9%86%da%af-%d8%a7%d9%88%d8%b1-%da%88%db%8c%d8%b3%d8%a7%d8%a6%d8%b2%d9%86%da%af-%d9%85%db%8c%da%ba-%d8%b3%d9%88%da%88%db%8c","status":"publish","type":"post","link":"https:\/\/fsxchemical.com\/ur\/blog\/sodium-alginate-in-textile-sizing-and-desizing-a-process-guide\/","title":{"rendered":"Sodium Alginate for Textile Sizing and Desizing: Selection and Process Control"},"content":{"rendered":"

Direct answer:<\/strong> Sodium alginate can be evaluated as a water-soluble film former in selected warp-sizing formulations, but it is not a universal replacement for starch, modified starch, PVA or CMC. Suitability depends on fibre and yarn construction, loom demand, solids, adhesion, abrasion resistance, humidity response, cost and the mill’s desizing route. A printing-grade alginate should not be approved for sizing from viscosity alone.<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u0679\u06cc\u06a9\u0633\u0679\u0627\u0626\u0644 \u06a9\u06cc \u067e\u06cc\u062f\u0627\u0648\u0627\u0631 \u0645\u06cc\u06ba \u0633\u0627\u0626\u0632\u0646\u06af \u06a9\u0627 \u06a9\u0631\u062f\u0627\u0631<\/h2>\n\n\n\n

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\u0633\u0627\u0626\u0632\u0646\u06af \u0627\u06cc\u062c\u0646\u0679 \u06a9\u06d2 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0627 \u0688\u0627\u0624\u0646 \u0627\u0633\u0679\u0631\u06cc\u0645 \u067e\u0631\u0627\u0633\u06cc\u0633\u0646\u06af \u067e\u0631 \u06a9\u06cc\u0627 \u0627\u062b\u0631 \u06c1\u0648\u062a\u0627 \u06c1\u06d2<\/h3>\n\n\n\n

The desizing process must reduce the applied size sufficiently for the intended downstream dyeing or finishing route.<\/a> Residue can alter wetting, penetration or local shade, but a detectable amount does not automatically establish a failed dyeing process. Define the size composition, selective residue method, sampling positions and acceptance criteria, then confirm absorbency and the finished-fabric result.<\/p>\n\n\n\n

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<\/div>\n\n\n\n

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Sodium alginate can form a flexible water-soluble film, but its performance relative to starch-based sizes depends on starch modification, blend ratio, solids, plasticization, yarn and humidity. Compare film strength, elongation, adhesion, abrasion resistance and shedding on the actual yarn rather than assuming one polymer is always more flexible.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

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Starch and modified starch are widely used for cotton-rich yarns because of cost and film performance. Desizing requirements depend on the starch type, degree of modification and blend; enzyme, oxidative or combined routes may be used. The mill should verify removal efficiency and downstream absorbency under its own process conditions.<\/p>\n\n\n\n

PVA is used in selected synthetic, blended and demanding warp-sizing systems because of its film strength and abrasion resistance. Desizing behavior depends on molecular weight, degree of hydrolysis, blend composition and wash conditions; compare removal, recovery and wastewater implications using the mill’s actual route.<\/p>\n\n\n\n

Water washing is a candidate removal route for a sodium-alginate-containing size. Its suitability must be checked for the complete formulation, applied amount and drying history. A blend containing other sizing polymers may require a different removal process; a soluble ingredient does not establish that the entire size will wash out adequately.<\/p>\n\n\n\n

\u0645\u0646\u0627\u0633\u0628 \u0641\u0627\u0626\u0628\u0631 \u06a9\u06cc \u0627\u0642\u0633\u0627\u0645 \u0627\u0648\u0631 \u0627\u0633\u062a\u0639\u0645\u0627\u0644\u0627\u062a<\/h3>\n\n\n\n

\u0633\u0648\u0688\u06cc\u0645 \u0627\u0644\u06af\u0646\u06cc\u0679 \u0633\u0627\u0626\u0632\u0646\u06af \u0633\u0628 \u0633\u06d2 \u0632\u06cc\u0627\u062f\u06c1 \u06a9\u067e\u0627\u0633 \u0627\u0648\u0631 \u062f\u06cc\u06af\u0631 \u0633\u06cc\u0644\u0648\u0644\u0648\u0632\u06a9 \u062f\u06be\u0627\u06af\u0648\u06ba \u2014 \u0644\u06cc\u0646\u0646\u060c \u0648\u0650\u0633\u06a9\u0648 \u0633\u060c \u0627\u0648\u0631 \u0633\u06cc\u0644\u0648\u0644\u0648\u0632\u06a9 \u0645\u0631\u06a9\u0628\u0627\u062a \u2014 \u067e\u0631 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06c1\u0648\u062a\u06cc \u06c1\u06d2\u06d4 \u06cc\u06c1 \u0645\u062e\u0644\u0648\u0637 \u0631\u06cc\u0634\u0648\u06ba \u06a9\u06d2 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0646\u0634\u0627\u0633\u062a\u06c1 \u06cc\u0627 \u067e\u06cc \u0648\u06cc \u0627\u06d2 \u06a9\u06d2 \u0633\u0627\u062a\u06be \u0645\u062e\u0644\u0648\u0637 \u0633\u0627\u0626\u0632\u0646\u06af \u0628\u0627\u062a\u06be \u0645\u06cc\u06ba \u0628\u06be\u06cc \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06c1\u0648\u062a\u06cc \u06c1\u06d2\u06d4.<\/p>\n\n\n\n

I\u06cc\u06c1 \u0645\u0635\u0646\u0648\u0639\u06cc \u062f\u06be\u0627\u06af\u0648\u06ba (\u067e\u0627\u0644\u0626\u06cc\u06d2\u0633\u0679\u0631\u060c \u0646\u0627\u0626\u0644\u0648\u0646) \u06a9\u06d2 \u0644\u06cc\u06d2 \u0628\u0646\u06cc\u0627\u062f\u06cc \u0633\u0627\u0626\u0632\u0646\u06af \u0627\u06cc\u062c\u0646\u0679 \u06a9\u06d2 \u0637\u0648\u0631 \u067e\u0631 \u06a9\u0645 \u0639\u0627\u0645 \u0637\u0648\u0631 \u067e\u0631 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06c1\u0648\u062a\u0627 \u06c1\u06d2\u060c \u062c\u06c1\u0627\u06ba PVA \u06cc\u0627 \u0627\u06cc\u06a9\u0631\u06cc\u0644\u06a9 \u0633\u0627\u0626\u0632\u0632 \u0639\u0645\u0648\u0645\u0627\u064b \u0627\u0646 \u06a9\u06d2 co \u06a9\u06cc \u0648\u062c\u06c1 \u0633\u06d2 \u062a\u0631\u062c\u06cc\u062d \u062f\u06cc\u06d2 \u062c\u0627\u062a\u06d2 \u06c1\u06cc\u06ba\u06d4<\/a>\u0645\u0635\u0646\u0648\u0639\u06cc \u0631\u06cc\u0634\u0648\u06ba \u0648\u0627\u0644\u06cc \u0633\u0637\u062d\u0648\u06ba \u06a9\u06d2 \u0633\u0627\u062a\u06be \u0645\u0637\u0627\u0628\u0642\u062a\u06d4.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
<\/div>\n\n\n\n\n

Sizing Polymer Comparison and Desizing Considerations<\/h2>\n\n\n\n
\n
Sizing route<\/th>Potential strength<\/th>Desizing consideration<\/th>Buyer or mill verification<\/th><\/tr><\/thead>
\u0633\u0648\u0688\u06cc\u0645 \u0627\u0644\u06af\u06cc\u0646\u0679<\/td>Water-soluble film in selected formulations<\/td>Removal depends on add-on, drying, water hardness, temperature and blended ingredients<\/td>Adhesion, abrasion, shedding, humidity response, residual size and cost<\/td><\/tr>\n
Starch or modified starch<\/td>Established cost and film route for many cotton-rich yarns<\/td>Enzyme, oxidative or combined process may be needed depending on type and blend<\/td>Cook stability, film behavior, loom efficiency, desizing and absorbency<\/td><\/tr>\n
PVA<\/td>Strong, abrasion-resistant film for selected demanding yarns<\/td>Removal varies with molecular weight, hydrolysis and wash conditions<\/td>Film strength, shedding, wash demand, recovery and wastewater handling<\/td><\/tr>\n
\u0633\u06cc \u0627\u06cc\u0645 \u0633\u06cc<\/td>Water-soluble film and viscosity control, grade dependent<\/td>Removal depends on DS, viscosity, add-on and formulation<\/td>Hydration, adhesion, salt response, film properties and residual size<\/td><\/tr>\n
Blended sizing system<\/td>Can balance adhesion, film, cost and preparation<\/td>Desizing must be designed for every component<\/td>Lock the full recipe and evaluate both weaving and downstream removal<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n

\u0633\u0648\u0688\u06cc\u0645 \u0627\u0644\u06af\u0646\u06cc\u0679 \u0633\u0627\u0626\u0632\u0646\u06af \u06a9\u06d2 \u0644\u06cc\u06d2 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u06d2 \u067e\u06cc\u0631\u0627\u0645\u06cc\u0679\u0631\u0632<\/h2>\n\n\n\n

\u0633\u0627\u0626\u0632\u0646\u06af \u0628\u0627\u062a\u06be \u0645\u06cc\u06ba \u0627\u0631\u062a\u06a9\u0627\u0632 \u0627\u0648\u0631 \u0644\u0632\u062c\u06cc\u0651\u062a<\/h3>\n\n\n\n

Set the starting bath concentration from the exact grade, yarn and target dry size add-on. Do not adopt a generic concentration range or infer the required amount from yarn count alone. Trial the candidate against the current size at measured add-on, then compare yarn protection, shedding, weaving behavior and removal.<\/p>\n\n\n\n

Evaluate bath flow and yarn penetration at the actual operating temperature. A viscosity class is not an automatic sizing approval: compare concentration, full measurement conditions and measured size add-on before deciding whether a lower- or higher-viscosity grade is practical.<\/p>\n\n\n\n

\u063a\u0633\u0644 \u06a9\u0627 \u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a \u0627\u0648\u0631 \u0627\u0679\u06be\u0627\u0646\u06d2 \u06a9\u06cc \u0634\u0631\u062d<\/h3>\n\n\n\n

Define the bath temperature as part of the grade-specific trial. Compare viscosity after the same preparation and holding history, and record yarn penetration and add-on. A nominal temperature copied from another polymer or process does not establish a suitable operating window.<\/p>\n\n\n\n

Distinguish wet liquor pickup from dry size add-on. Record each on a declared dry-yarn basis, together with bath solids, squeeze conditions and the measurement method. Differences in wet pickup do not necessarily mean the same differences in dry deposited size.<\/p>\n\n\n\n

\u0633\u0627\u0626\u0632\u0646\u06af \u06a9\u06d2 \u0628\u0639\u062f \u062e\u0634\u06a9 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u062d\u0627\u0644\u0627\u062a<\/a><\/h3>\n\n\n\n

\u0633\u0627\u0626\u0632\u0646\u06af \u06a9\u06d2 \u0639\u0645\u0644 \u06a9\u06d2 \u0628\u0639\u062f\u060c \u0633\u0627\u0626\u0632 \u0634\u062f\u06c1 \u062f\u06be\u0627\u06af\u0627 \u062e\u0634\u06a9 \u06a9\u0631\u0646\u06d2 \u0648\u0627\u0644\u06d2 \u062d\u0635\u06d2 \u0633\u06d2 \u06af\u0632\u0631\u062a\u0627 \u06c1\u06d2 \u062a\u0627\u06a9\u06c1 \u067e\u0627\u0646\u06cc \u06c1\u0679 \u062c\u0627\u0626\u06d2 \u0627\u0648\u0631 \u0633\u0627\u0626\u0632 \u06a9\u06cc \u0641\u0644\u0645 \u0628\u0646 \u062c\u0627\u0626\u06d2\u06d4 \u0633\u0648\u0688\u06cc\u0645 \u0627\u0644\u06af\u0646\u06cc\u0679 \u06a9\u06d2 \u0644\u06cc\u06d2\u060c \u062e\u0634\u06a9 \u06a9\u0631\u0646\u06d2 \u06a9\u0627 \u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a \u0627\u0648\u0631 \u062f\u0648\u0631\u0627\u0646\u06cc\u06c1 \u0627\u062a\u0646\u0627 \u0645\u0646\u0627\u0633\u0628 \u06c1\u0648\u0646\u0627 \u0686\u0627\u06c1\u06cc\u06d2 \u06a9\u06c1 \u0627\u06cc\u06a9 \u0645\u0631\u0628\u0648\u0637 \u0641\u0644\u0645 \u0628\u0646 \u0633\u06a9\u06d2\u060c \u0644\u06cc\u06a9\u0646 \u0627\u062a\u0646\u0627 \u0632\u06cc\u0627\u062f\u06c1 \u0646\u06c1 \u06c1\u0648 \u06a9\u06c1 \u0627\u0644\u06af\u0646\u06cc\u0679 \u06a9\u0648 \u062e\u0631\u0627\u0628 \u06a9\u0631 \u062f\u06d2 \u06cc\u0627 \u0641\u0644\u0645 \u06a9\u0648 \u0646\u0627\u0632\u06a9 \u0628\u0646\u0627 \u062f\u06d2\u06d4.<\/p>\n\n\n\n

Compare the actual yarn thermal and moisture history with the approved reference. Tacky yarn, brittle films or increased shedding can have several causes; those symptoms alone do not prove polymer-chain degradation. Change a drying variable only within a suitable trial window and recheck yarn separation, film behavior and desizing.<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u0688\u06cc\u0633\u0627\u0626\u0632\u0646\u06af: \u0628\u064f\u0646\u0627\u0626\u06cc \u06a9\u06d2 \u0628\u0639\u062f \u0633\u0648\u0688\u06cc\u0645 \u0627\u0644\u06af\u06cc\u0646\u06cc\u0679 \u06a9\u0627 \u06c1\u0679\u0627\u0646\u0627<\/h2>\n\n\n\n

\u06a9\u06cc\u0648\u06ba \u0633\u0627\u0626\u0632 \u06a9\u0645 \u06a9\u0631\u0646\u0627<\/a>\u0688\u0627\u0624\u0646 \u0627\u0633\u0679\u0631\u06cc\u0645 \u0631\u0646\u06af\u0627\u0626\u06cc \u06a9\u06d2 \u0644\u06cc\u06d2 \u0644\u06cc\u062a\u06cc\u0679\u0631 \u06a9\u0627 \u0645\u0639\u0627\u0645\u0644\u06c1<\/h3>\n\n\n\n

Residual size is a possible contributor to resist marks or uneven dyeing. Investigate it alongside other fabric-preparation and process causes; use the observed pattern to choose the checks. UNIDO\u2019s cotton-finishing QC paper<\/a> recommends residual-size checks when size composition, fabric construction or desizing conditions change. That historical cotton guidance is not a universal alginate-residue limit. Compare the affected area with an approved reference and also inspect scouring, fabric preparation, application and fixation conditions.<\/p>\n\n\n\n

For reactive dyeing or printing, a remaining size film can restrict access to the cellulosic substrate or change local application. The effect depends on the material, amount, distribution and full process. Do not infer a particular fixation loss from residue detection alone. Assess the relevant residue result, wetting uniformity, final shade and specified fastness separately; where fixation is measured, use a suitable dye-specific method rather than treating shade or wash loss as an exact fixation assay.<\/p>\n\n\n\n

\u06af\u0631\u0645 \u067e\u0627\u0646\u06cc \u06a9\u06d2 \u0630\u0631\u06cc\u0639\u06d2 \u0633\u0627\u0626\u0632 \u0646\u06a9\u0627\u0644\u0646\u06d2 \u06a9\u0627 \u0637\u0631\u06cc\u0642\u06c1<\/h3>\n\n\n\n

A controlled water-washing trial can establish whether the candidate size can be removed sufficiently under the mill\u2019s available conditions. Define the bath chemistry, water quality, temperature, time, liquor ratio and mechanical action before comparing the candidate and reference. A practical sequence to evaluate is:<\/p>\n\n\n\n