{"id":10366,"date":"2026-05-28T02:47:54","date_gmt":"2026-05-28T02:47:54","guid":{"rendered":"https:\/\/fsxchemical.com\/?p=10366"},"modified":"2026-08-08T02:52:32","modified_gmt":"2026-08-08T02:52:32","slug":"troubleshooting-textile-printing-paste-problems","status":"publish","type":"post","link":"https:\/\/fsxchemical.com\/ar\/blog\/troubleshooting-textile-printing-paste-problems\/","title":{"rendered":"Troubleshooting Common Issues with Textile Printing Pastes"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-d1e2ed8a\"><em>Textile printing paste problems rarely have only one cause. This troubleshooting guide explains how to diagnose viscosity drift, lumps, filtration residue, foam, separation, poor transfer, spreading, uneven color and finished-fabric defects.<\/em><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-be086cb7\">A printing paste may look simple in a mixing tank, but it is actually a complex system of thickener, water, dyes or pigments, salts, alkalis, binders, humectants and other auxiliaries. Every component can influence viscosity, rheology, filtration and final printing behavior.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ad56d508\">This is why textile printing problems should not be corrected by changing the thickener immediately. A paste that appears too thin may be caused by incorrect concentration, high temperature, incomplete hydration, electrolyte interaction or an incorrect viscosity test method. A blurred print may come from paste rheology, but it may also come from excessive application, absorbent fabric or unsuitable machine settings.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c2419f9e\">Effective troubleshooting begins by defining the symptom, collecting process data and changing one variable at a time. The objective is to identify the real root cause before modifying the formulation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a78ac0f2\">The following guide provides a practical troubleshooting framework for reactive, disperse, pigment and digital textile printing paste systems.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-b4c72cbb\">Why Printing Paste Problems Require Systematic Diagnosis<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a423a00a\">Textile printing paste performance is affected by several groups of variables at the same time. A visible defect on the fabric is often the final result of interactions that started much earlier in the process.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0ca29d9a\">Raw-material variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9602b06e\">Thickener grade, polymer concentration, moisture, particle profile, batch variation and storage conditions can influence paste preparation and rheology.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9098499e\">Preparation variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3674187e\">Water quality, powder-addition rate, mixer geometry, mixing speed, hydration time, temperature and order of chemical addition can all change the final paste.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-d3821e7a\">Formulation variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-29982bc2\">Dyes, pigments, salts, alkalis, binders, crosslinkers, humectants, surfactants and other polymers can change viscosity and physical stability.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e70a8a72\">Machine variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-be7edde9\">Pumping, circulation, screen condition, squeegee pressure, printing speed, coating gap and application quantity influence how the paste reaches the textile.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0f83d45f\">Fabric variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fc44cf84\">Fibre composition, fabric weight, construction, absorbency and previous finishing treatments influence spreading and penetration.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-4aebad42\">Post-treatment variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bd1bdf97\">Drying, steaming, thermofixation, curing and washing can change shade, definition and fabric handle after printing.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-325b6f95\">Troubleshooting should therefore begin with the complete process rather than with one material in isolation.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-57a866e0\">Start with Five Basic Checks<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ea6c0280\">Before changing the formula, verify five basic areas. These checks solve many apparent thickener problems without introducing additional variables.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-2073efc3\">1. Confirm the correct product<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-87d291cf\">Check the commercial product code, batch number, package label and current TDS. Make sure the material used in production is the same grade that was approved during testing.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5a915ae9\">2. Confirm the preparation method<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-16e4bd9c\">Check concentration, water quantity, powder addition, mixing speed, hydration time and order of chemical addition.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-96ce9395\">3. Confirm temperature<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-59ba3659\">A viscosity difference may be caused by sample temperature rather than a real formulation change.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b319703e\">4. Confirm the viscosity test method<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0edbabed\">Record instrument, spindle or rotor, speed, concentration, temperature and reading time before comparing results.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-77ca233c\">5. Compare with a retained reference<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8f364169\">Where available, prepare a retained sample of the approved product using exactly the same method as the current batch.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-2c2a675c\">1. Lumps and Fish Eyes in the Printing Paste<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6ab9fb6f\">Lumps are common when powdered thickeners hydrate rapidly at the surface before water reaches the inside of the particle cluster.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-c92a1ec8\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Powder added too quickly<\/li>\n\n\n\n<li>Insufficient water circulation before addition<\/li>\n\n\n\n<li>Powder added into one location<\/li>\n\n\n\n<li>Unsuitable mixer or impeller position<\/li>\n\n\n\n<li>Incorrect water temperature<\/li>\n\n\n\n<li>Insufficient hydration time<\/li>\n\n\n\n<li>Moisture-damaged or compacted powder<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9c360ff6\">Recommended checks<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7d901c35\">Prepare a fresh laboratory batch while recording powder-addition time and mixing conditions. Add the thickener gradually into a properly circulating water phase and inspect the paste before and after the defined hydration period.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a8e599f7\">Do not simply increase mixing time<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f091f04\">Persistent lumps may contain dry polymer surrounded by a hydrated outer layer. Additional mixing does not always eliminate them efficiently.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-df5ca432\">When comparing <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d8%a3%d9%84%d8%ac%d9%8a%d9%86%d8%a7%d8%aa-%d8%a7%d9%84%d8%b5%d9%88%d8%af%d9%8a%d9%88%d9%85\/\">\u0623\u0644\u062c\u064a\u0646\u0627\u062a \u0627\u0644\u0635\u0648\u062f\u064a\u0648\u0645<\/a>, <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d9%83%d8%a7%d8%b1%d8%a8%d9%88%d9%83%d8%b3%d9%8a-%d9%85%d9%8a%d8%ab%d9%8a%d9%84-%d8%a7%d9%84%d8%b3%d9%84%d9%8a%d9%84%d9%88%d8%b2-cmc\/\">CMC<\/a> \u0623\u0648 <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d9%86%d8%b4%d8%a7-%d8%a7%d9%84%d9%83%d8%b1%d8%a8%d9%88%d9%83%d8%b3%d9%8a-%d9%85%d9%8a%d8%ab%d9%8a%d9%84-cms\/\">CMS<\/a>, the preparation method should be appropriate for the specific grade.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e3f3bcec\">2. Printing Paste Viscosity Is Too Low<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2d32eb11\">Low viscosity does not automatically mean that more thickener should be added.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f40d9cd5\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incorrect weighing or excessive water<\/li>\n\n\n\n<li>Incomplete polymer hydration<\/li>\n\n\n\n<li>Sample temperature above the reference condition<\/li>\n\n\n\n<li>Incorrect product grade<\/li>\n\n\n\n<li>Different viscosity measurement method<\/li>\n\n\n\n<li>Salt, alkali or another electrolyte reducing viscosity<\/li>\n\n\n\n<li>Prolonged shear in a sensitive system<\/li>\n\n\n\n<li>Microbiological or chemical degradation in stored paste<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-80ce3f63\">Recommended checks<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f20e9ebd\">Verify batch weights first. Then confirm temperature, hydration time and viscosity method. If the stock paste is correct but the complete color paste becomes thin, investigate the formulation rather than immediately increasing polymer dosage.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a3e418db\">Correct carefully<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8cec44b5\">Adding dry thickener directly to a completed color paste can create lumps and local concentration differences. Any correction procedure should be validated for the specific product and formulation.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-95bc1c3c\">3. Printing Paste Viscosity Is Too High<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-279d55fd\">Excessive viscosity can reduce screen transfer, create pumping resistance and produce uneven solid areas.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-48c6bdbb\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excess thickener dosage<\/li>\n\n\n\n<li>Incorrect total batch weight<\/li>\n\n\n\n<li>Water evaporation<\/li>\n\n\n\n<li>Lower measurement temperature<\/li>\n\n\n\n<li>Continued hydration after the first test<\/li>\n\n\n\n<li>Incorrect grade used in production<\/li>\n\n\n\n<li>Different measurement speed or spindle<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5dc36909\">Check before adding water<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-192bbef4\">Confirm the sample temperature and test method. If evaporation is the cause, identify why the tank or container is losing water.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9ed94479\">Why uncontrolled dilution is risky<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a8a94316\">Adding water changes not only viscosity but also the concentration of dyes, salts, binders, alkalis and other auxiliaries. The corrected paste may reach the target viscosity while no longer matching the approved formulation.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-fafb86b9\">4. Viscosity Changes During Holding<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-665d9b37\">A paste may be within specification immediately after preparation and move outside the operating window several hours later.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-094d8bd2\">Viscosity increases may be caused by<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continued polymer hydration<\/li>\n\n\n\n<li>Evaporation<\/li>\n\n\n\n<li>Temperature decrease<\/li>\n\n\n\n<li>Delayed interaction between formulation components<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ece7ba92\">Viscosity decreases may be caused by<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperature increase<\/li>\n\n\n\n<li>Electrolyte interaction<\/li>\n\n\n\n<li>pH change<\/li>\n\n\n\n<li>Prolonged mechanical shear<\/li>\n\n\n\n<li>Polymer incompatibility<\/li>\n\n\n\n<li>Contamination or degradation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-1839d4d6\">Recommended approach<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6a9c13d6\">Measure the paste at defined checkpoints using closed containers and a controlled temperature. Record viscosity together with pH, appearance, filtration and separation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-57135fc4\">A numerical change is most important when it also changes machine behavior or finished-fabric performance.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-0868ecb3\">5. Viscosity Changes After Adding Salt, Alkali or Auxiliaries<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-43085159\">Many printing thickeners are sensitive to ionic strength, pH and local chemical concentration.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e04a4eb4\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electrolyte interaction with the polymer<\/li>\n\n\n\n<li>Rapid local pH change<\/li>\n\n\n\n<li>Highly concentrated chemical added directly<\/li>\n\n\n\n<li>Incorrect addition sequence<\/li>\n\n\n\n<li>Incompatible polymers or auxiliaries<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8b676a86\">Use staged testing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9a94f650\">Prepare the thickener paste first, then add formulation components one at a time while measuring viscosity and observing appearance.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-345aecef\">Identify the critical addition<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e5161829\">When the viscosity changes sharply after one component is introduced, investigate its concentration, dilution and addition sequence before changing the thickener.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-eb423c80\">Application chemistry matters<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6b1007d1\">A product suitable for one reactive, disperse or pigment formula may behave differently under another chemical load.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-cff7e866\">6. Excessive Filter Residue or Poor Screen Passage<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-801c0fba\">Filter residue can interfere with screens, pumps and continuous production. However, its origin should be identified before blaming raw material purity.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9ec7107a\">Possible sources of residue<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incompletely hydrated thickener<\/li>\n\n\n\n<li>Powder lumps<\/li>\n\n\n\n<li>Hydrated gel particles<\/li>\n\n\n\n<li>Chemical precipitation<\/li>\n\n\n\n<li>Polymer incompatibility<\/li>\n\n\n\n<li>Fibres from bags or fabric<\/li>\n\n\n\n<li>Dirty tanks or pipelines<\/li>\n\n\n\n<li>Foreign particles from production equipment<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-cfc4f3e9\">Test the stock paste first<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e3c84aa0\">If the stock thickener paste filters well but the complete formulation does not, the problem probably develops after another chemical is added.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ebd42600\">Inspect the residue<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e74b8575\">Dry or examine the retained material where practical. The appearance of the residue can help distinguish polymer gel from foreign contamination or chemical precipitation.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b8a09481\">Standardize filtration<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-771f1443\">Record filter material, opening size, sample quantity, pressure condition and time so that results remain comparable.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-feb516b6\">7. Excessive Foam and Entrapped Air<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4bfdf3da\">Foam can produce inaccurate viscosity readings, poor transfer, pinholes and uneven printed areas.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ae339da1\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mixer pulling air into the batch<\/li>\n\n\n\n<li>Excessive mixing speed<\/li>\n\n\n\n<li>Surfactant-containing auxiliaries<\/li>\n\n\n\n<li>Air entering through pump seals or return lines<\/li>\n\n\n\n<li>Incorrect tank level or circulation pattern<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-84f4d454\">Observe when foam begins<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a11f6def\">If foam starts during water and thickener preparation, review mixing. If it appears only after an auxiliary is added, review that component.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-91589c4e\">Measure foam decay<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4b9b65b7\">Initial foam volume and the time required for bubbles to disappear can both be useful.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-c043c0a0\">Do not automatically increase defoamer<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b3d87784\">Defoamer can influence wetting, coating and printing behavior. Correct the mechanical cause first where possible.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e20fa682\">8. Paste Separation, Settling or Syneresis<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-098002c1\">A printing paste should remain sufficiently uniform during its approved holding and production period.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-3705731d\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insufficient rheological structure<\/li>\n\n\n\n<li>Incompatible thickener and formulation components<\/li>\n\n\n\n<li>Incorrect pH<\/li>\n\n\n\n<li>High electrolyte load<\/li>\n\n\n\n<li>Poor pigment or dye dispersion<\/li>\n\n\n\n<li>Incorrect solids concentration<\/li>\n\n\n\n<li>Storage beyond the validated holding period<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b10cac36\">Inspect the type of separation<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-00a3d63b\">Clear liquid at the surface, dense sediment at the bottom and visible gel phases can indicate different mechanisms.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-329e8b5d\">Do not rely only on remixing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b11cb472\">A paste that temporarily returns to a uniform appearance after stirring may still be fundamentally unstable.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bc6d61ae\">Print fresh and stored paste<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d74d35e8\">Compare fabric results to determine whether the physical change affects application quality.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e91e05dd\">9. Poor Paste Transfer<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0b165248\">A paste may have acceptable standing viscosity but fail to transfer completely through the printing equipment.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a3e4035f\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Viscosity too high<\/li>\n\n\n\n<li>Unsuitable shear-thinning behavior<\/li>\n\n\n\n<li>Excessive structural recovery<\/li>\n\n\n\n<li>Screen or mesh too restrictive<\/li>\n\n\n\n<li>Low squeegee pressure<\/li>\n\n\n\n<li>Insufficient paste supply<\/li>\n\n\n\n<li>Filter or screen contamination<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-536c3086\">Do not judge from standing viscosity alone<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-40727f84\">Compare viscosity at multiple speeds or use application-relevant rheology data when possible.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-da1ef445\">Check the machine before reformulating<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a72ecf16\">Screen condition, squeegee settings and paste level can create symptoms that resemble excessive viscosity.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-20e8f676\">10. Printed Edges Spread or Lose Definition<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e8df30f7\">Edge spreading is one of the most common reasons printing mills consider changing their thickener.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f94c029a\">Possible paste-related causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Viscosity below the practical operating range<\/li>\n\n\n\n<li>Weak structural recovery after shear<\/li>\n\n\n\n<li>Excessive water or humectant<\/li>\n\n\n\n<li>Excessive paste application<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-49ae025e\">Possible fabric-related causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High absorbency<\/li>\n\n\n\n<li>Open fabric construction<\/li>\n\n\n\n<li>Inconsistent pretreatment<\/li>\n\n\n\n<li>Residual wetting or finishing chemicals<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-4798bd5b\">Possible process-related causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excessive pressure<\/li>\n\n\n\n<li>Slow drying<\/li>\n\n\n\n<li>Incorrect screen conditions<\/li>\n\n\n\n<li>Uncontrolled moisture before fixation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1904cd54\">Increasing viscosity may reduce spreading in some cases, but excessive viscosity can create poor transfer and broken fine lines. Rheology, application quantity and fabric absorbency should be reviewed together.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6f24e251\">11. Fine Lines Break or Small Details Disappear<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-647dc96c\">Broken lines are not always the opposite of edge spreading. The paste can be too structured to transfer through fine design elements.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-74287b6a\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Viscosity too high<\/li>\n\n\n\n<li>Poor flow under shear<\/li>\n\n\n\n<li>Filter residue or gel particles<\/li>\n\n\n\n<li>Screen blockage<\/li>\n\n\n\n<li>Insufficient application pressure<\/li>\n\n\n\n<li>Insufficient paste supply<\/li>\n\n\n\n<li>Unsuitable fabric surface<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ed62a73e\">\u0627\u0633\u062a\u062e\u062f\u0645 \u0646\u0645\u0637 \u0627\u062e\u062a\u0628\u0627\u0631 \u062a\u0634\u062e\u064a\u0635\u064a<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7eb60579\">Include several line widths, small text and dots. This makes it easier to determine the point at which detail begins to fail.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f5a490d5\">Compare screen and paste together<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cb7da693\">If the same paste works through a more open screen, investigate filtration and rheology before changing total viscosity.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e1af6f99\">12. Large Solid Areas Print Unevenly<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ff477bb1\">A formulation can reproduce fine lines but still perform poorly in large solid areas.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-29e0af19\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poor leveling<\/li>\n\n\n\n<li>Excessive paste structure<\/li>\n\n\n\n<li>Foam or entrapped air<\/li>\n\n\n\n<li>Uneven screen transfer<\/li>\n\n\n\n<li>Variable fabric absorbency<\/li>\n\n\n\n<li>Insufficient paste supply<\/li>\n\n\n\n<li>Uneven squeegee or roller pressure<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-723292ac\">Check dark shades<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f3bef59e\">Black, navy and other deep shades often reveal levelness and transfer differences more clearly than light colors.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-d099e048\">Check across the fabric width<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4ad1dbef\">A left-to-right difference may indicate mechanical or fabric variation rather than the thickener itself.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-8012d4e7\">13. Excessive Fabric Penetration or Strike-Through<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-354d3c79\">Too much paste moving through the fabric can reduce surface color concentration and create reverse-side contamination.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-59f1f680\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Low paste structure<\/li>\n\n\n\n<li>Excessive application quantity<\/li>\n\n\n\n<li>High machine pressure<\/li>\n\n\n\n<li>Lightweight or open fabric<\/li>\n\n\n\n<li>High fabric absorbency<\/li>\n\n\n\n<li>Unsuitable wetting behavior<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bfa6e4ac\">Inspect both sides of the textile<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2ec820e5\">Compare surface coverage and back penetration using the same fabric lot and print conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f2e9566a\">Avoid correcting fabric problems only with viscosity<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e736a3ff\">Extremely high viscosity may reduce penetration but create poor transfer. Application quantity and machine settings should also be optimized.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-aa14b0eb\">14. Color Becomes Weak After Fixation or Washing<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-81084196\">When the wet or dried print looks strong but color becomes weak after fixation or washing, the thickener may not be the primary cause.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-20fdb305\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incorrect dye or pigment concentration<\/li>\n\n\n\n<li>Excessive penetration into the fabric<\/li>\n\n\n\n<li>Insufficient alkali or fixation chemistry<\/li>\n\n\n\n<li>Incorrect steaming or curing conditions<\/li>\n\n\n\n<li>Reactive dye hydrolysis<\/li>\n\n\n\n<li>Binder-film failure in pigment printing<\/li>\n\n\n\n<li>Excessive washing or incorrect washing sequence<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9a3144c3\">Check fixation before changing the thickener<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d2c40f91\">Temperature, moisture, dwell time and chemical conditions should be recorded.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-4a424c45\">Compare identical post-treatment<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-25c0ad4e\">Candidate and reference thickener systems must use the same fixation and washing conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-84124ca6\">15. Difficult Wash-Off or Stiff Fabric Handle<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-580b27c3\">Excessive residual polymer or binder can change the final surface feel of the textile.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5ae99d7e\">Possible causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excessive thickener dosage<\/li>\n\n\n\n<li>High paste pickup<\/li>\n\n\n\n<li>Thickener route with unsuitable removal behavior<\/li>\n\n\n\n<li>Insufficient washing<\/li>\n\n\n\n<li>Excessive binder deposition<\/li>\n\n\n\n<li>Incorrect curing conditions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e4984b72\">Evaluate after complete finishing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d30477e9\">Fabric handle should not be judged from the freshly printed material.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bcca07a6\">Compare printed and unprinted areas<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-be4f836d\">This helps determine whether stiffness is related to paste deposition or the fabric finishing process.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9c4b2e42\">Consider total polymer solids<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-60acfc82\">In compound thickener and pigment systems, several polymers may contribute to surface buildup.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-861daf38\">16. Laboratory Results Are Good but Production Fails<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ff19be95\">Scale-up differences are one of the most important causes of failed thickener evaluations.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5de503d5\">Laboratory and production differ in<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tank geometry<\/li>\n\n\n\n<li>Impeller design<\/li>\n\n\n\n<li>Batch volume<\/li>\n\n\n\n<li>Mixing circulation<\/li>\n\n\n\n<li>Heat generation<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u0627\u0644\u062a\u0631\u0637\u064a\u0628<\/li>\n\n\n\n<li>Pump and pipeline shear<\/li>\n\n\n\n<li>Holding time<\/li>\n\n\n\n<li>Fabric quantity and variation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9dd43f6d\">Do not copy mixer RPM directly<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-46dd9b94\">The same rotational speed in a small laboratory mixer and a production tank does not create the same flow pattern.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0b57547e\">Conduct a controlled scale-up<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b3c5a857\">Preserve concentration, addition sequence and QC method while adjusting mixing parameters appropriately for production equipment.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-20b4c513\">Monitor the entire production run<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ed520cba\">Compare fabric from the beginning, middle and end rather than approving only the first metres.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-abe23509\">17. Approved Sample and Bulk Batch Perform Differently<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2736cf10\">A successful laboratory sample must be connected to a controlled commercial product and manufacturing batch.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8991b916\">Check product identity<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4692d650\">Compare the sample code, commercial grade, purchase order, package label and batch COA.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-30719da6\">Check incoming test conditions<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-defe305b\">Verify whether the original sample and bulk product were prepared using the same concentration, water, hydration and viscosity method.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-22f08987\">Check storage and transport<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-30a2f625\">Moisture exposure, damaged packaging or inappropriate storage can change the condition of some thickener products.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-d258590a\">Use retained samples<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-608172c1\">Prepare the approved retained sample and the questioned production batch side by side under identical conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-fa6f24ca\">Verify the first commercial batch<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9d40a696\">First-batch verification reduces the risk of moving directly from a small sample to unrestricted production.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-cd4e65af\">Troubleshooting by Printing Route<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0645\u0633\u0627\u0631 \u0627\u0644\u0637\u0628\u0627\u0639\u0629<\/th><th>Common Paste Issues<\/th><th>Priority Checks<\/th><\/tr><\/thead><tbody><tr><td>\u0627\u0644\u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u062d\u0633\u0627\u0633\u0629 \u0639\u0644\u0649 \u0627\u0644\u0634\u0627\u0634\u0629<\/td><td>Viscosity drift, spreading, filtration, weak color after wash-off<\/td><td>Thickener hydration, alkali and salt compatibility, fabric, steaming and wash-off<\/td><\/tr><tr><td>\u0627\u0644\u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u0645\u062a\u0641\u0631\u0642\u0629<\/td><td>Paste instability, uneven transfer, poor solid areas, surface residue<\/td><td>Thickener route, dye dispersion, rheology, polyester surface and fixation<\/td><\/tr><tr><td>\u0627\u0644\u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u0635\u0628\u063a\u064a\u0629<\/td><td>Binder instability, poor definition, stiff handle and weak rubbing performance<\/td><td>Thickener-binder compatibility, solids, curing and film formation<\/td><\/tr><tr><td>\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062a\u0645\u0647\u064a\u062f\u064a\u0629 \u0627\u0644\u0631\u0642\u0645\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0639\u0644\u064a\u0629<\/td><td>Uneven pickup, ink spreading, viscosity drift and difficult wash-off<\/td><td>Pretreatment rheology, fabric absorbency, chemical distribution and fixation<\/td><\/tr><tr><td>Disperse digital pretreatment<\/td><td>Uneven application, filtration problems and inconsistent color<\/td><td>Polyester preparation, paste stability, coating uniformity and thermal process<\/td><\/tr><tr><td>Pigment digital pretreatment<\/td><td>Spreading, binder interaction, stiff handle and uneven solids<\/td><td>Binder compatibility, pickup, rheology, drying and curing<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d54e3c65\">Digital printing should use an application-specific <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d9%85%d8%b9%d8%ac%d9%88%d9%86-%d8%a7%d9%84%d8%b7%d8%a8%d8%a7%d8%b9%d8%a9-%d8%a7%d9%84%d8%b1%d9%82%d9%85%d9%8a%d8%a9\/\">\u0645\u0639\u062c\u0648\u0646 \u0627\u0644\u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u0631\u0642\u0645\u064a\u0629<\/a> or validated pretreatment route rather than transferring a conventional screen-printing paste directly.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-93bc0549\">A Practical Root-Cause Troubleshooting Workflow<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-48fededa\">Step 1: Describe the symptom precisely<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-68823dcb\">Replace general statements such as \u201cthe paste is bad\u201d with measurable observations such as \u201cviscosity decreases after alkali addition\u201d or \u201cblack fine lines spread after 30 minutes of holding.\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-7fe6f2ed\">Step 2: Identify when the problem first appears<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e2c2da9d\">Determine whether the problem starts during powder preparation, chemical addition, holding, circulation, printing, fixation or washing.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-12f9e83b\">Step 3: Compare with the approved reference<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-98bc2786\">Prepare current and reference products side by side using identical conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-51c232cc\">Step 4: Separate material and process variables<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cb0cca84\">Use the same batch of fabric and chemicals where possible while changing only one suspected variable.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-acdf4158\">Step 5: Test the stock paste<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6eea52e5\">Check hydration, viscosity, filtration, foam and appearance before adding dyes or other chemicals.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-2e5ee5c9\">Step 6: Add formulation components in stages<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6e34125e\">This helps identify whether the problem begins after salt, alkali, binder or another auxiliary is introduced.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-63b784b3\">Step 7: Test fresh and held paste<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-be6903de\">Compare immediately after preparation and after a production-relevant holding period.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8f2f0188\">Step 8: Complete the fabric test<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7f746983\">Evaluate definition, penetration, color uniformity and surface condition.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-1d67149b\">Step 9: Complete fixation and post-treatment<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-29fe3973\">Do not make the final decision from the wet print alone.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e4dcb78c\">Step 10: Conduct a limited production trial<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ef9fb915\">Confirm performance under realistic tank size, circulation, speed and production time before changing bulk supply.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-c3c05fbb\">What Data Should Be Recorded Before Adjusting the Paste?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a0416e7c\">Good troubleshooting depends on good records. Before changing the formulation, collect enough information to reconstruct the batch.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e3c05ab6\">Thickener information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Product and grade<\/li>\n\n\n\n<li>Batch number<\/li>\n\n\n\n<li>TDS and recent COA where available<\/li>\n\n\n\n<li>Dosage<\/li>\n\n\n\n<li>Powder or liquid condition<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e5c8314f\">Preparation information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Total batch size<\/li>\n\n\n\n<li>Water source<\/li>\n\n\n\n<li>Water temperature<\/li>\n\n\n\n<li>Mixing equipment<\/li>\n\n\n\n<li>Powder-addition time<\/li>\n\n\n\n<li>Mixing duration<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u0627\u0644\u062a\u0631\u0637\u064a\u0628<\/li>\n\n\n\n<li>\u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u062c\u0645\u0639<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bdc26f47\">QC information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Viscosity and complete measurement method<\/li>\n\n\n\n<li>\u0627\u0644\u0631\u0642\u0645 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u062c\u064a\u0646\u064a<\/li>\n\n\n\n<li>Filtration<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0638\u0647\u0631<\/li>\n\n\n\n<li>Foam<\/li>\n\n\n\n<li>Holding-time results<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9d9e1f63\">Printing information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fabric composition and weight<\/li>\n\n\n\n<li>Printing equipment<\/li>\n\n\n\n<li>Screen or application conditions<\/li>\n\n\n\n<li>Production speed<\/li>\n\n\n\n<li>Paste application quantity where available<\/li>\n\n\n\n<li>Fixation or curing conditions<\/li>\n\n\n\n<li>Wash-off process<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e7ba6cd7\">Defect information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Photographs<\/li>\n\n\n\n<li>Printed fabric sample<\/li>\n\n\n\n<li>Paste sample<\/li>\n\n\n\n<li>Time when the defect first appeared<\/li>\n\n\n\n<li>Whether the defect is continuous or intermittent<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6e1c2002\">When Should You Change the Thickener?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fe0475d2\">Changing the thickener is appropriate when controlled testing shows that the current polymer route cannot meet the required combination of viscosity, rheology, stability, filtration and finished-fabric quality.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-431198d9\">Consider a different grade when<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The current viscosity range is unsuitable for the equipment<\/li>\n\n\n\n<li>Hydration is consistently incompatible with the production process<\/li>\n\n\n\n<li>Filtration remains unacceptable under controlled preparation<\/li>\n\n\n\n<li>Chemical compatibility is insufficient<\/li>\n\n\n\n<li>Rheology produces poor transfer or excessive spreading<\/li>\n\n\n\n<li>Holding stability does not meet production requirements<\/li>\n\n\n\n<li>Batch consistency cannot be controlled satisfactorily<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-d77e2b55\">Consider a different thickener family when<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f880314\">The application chemistry itself is better suited to another polymer route. For example, conventional reactive printing may begin with <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d8%a3%d9%84%d8%ac%d9%8a%d9%86%d8%a7%d8%aa-%d8%a7%d9%84%d8%b5%d9%88%d8%af%d9%8a%d9%88%d9%85\/\">\u0623\u0644\u062c\u064a\u0646\u0627\u062a \u0627\u0644\u0635\u0648\u062f\u064a\u0648\u0645 <\/a>, while selected disperse or compound systems may evaluate <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d9%86%d8%b4%d8%a7-%d8%a7%d9%84%d9%83%d8%b1%d8%a8%d9%88%d9%83%d8%b3%d9%8a-%d9%85%d9%8a%d8%ab%d9%8a%d9%84-cms\/\">CMS <\/a>, and selected printing or rheology applications may evaluate <a href=\"https:\/\/fsxchemical.com\/ar\/product\/%d9%83%d8%a7%d8%b1%d8%a8%d9%88%d9%83%d8%b3%d9%8a-%d9%85%d9%8a%d8%ab%d9%8a%d9%84-%d8%a7%d9%84%d8%b3%d9%84%d9%8a%d9%84%d9%88%d8%b2-cmc\/\">CMC <\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5086f8f6\">Do not change products without a reference trial<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e097fb28\">A candidate product should be compared with the current grade under the same laboratory and production conditions before commercial conversion.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e929047b\">How FSX Chemical Supports Printing Paste Troubleshooting<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-df091055\">FSX Chemical supplies sodium alginate, CMC, CMS, digital printing paste and related textile thickener routes for printing mills, formulators, importers and distributors.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fc7c272c\">Troubleshooting begins with the customer&#8217;s actual process rather than with an assumption that the thickener must be replaced.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a11ed820\">Buyers can provide<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Current thickener or printing paste name and grade<\/li>\n\n\n\n<li>Current TDS, SDS or COA<\/li>\n\n\n\n<li>Physical powder or paste sample<\/li>\n\n\n\n<li>Viscosity and complete test method<\/li>\n\n\n\n<li>Complete formulation<\/li>\n\n\n\n<li>Preparation and hydration procedure<\/li>\n\n\n\n<li>Fabric composition and construction<\/li>\n\n\n\n<li>Reactive, disperse, pigment or digital route<\/li>\n\n\n\n<li>Printing equipment and production speed<\/li>\n\n\n\n<li>Filtration or stability records<\/li>\n\n\n\n<li>Defect photographs or printed fabric samples<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8ee82c6e\">Technical review may include<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Review of the existing product and test method<\/li>\n\n\n\n<li>Identification of likely root-cause categories<\/li>\n\n\n\n<li>Alignment of viscosity and preparation procedures<\/li>\n\n\n\n<li>Review of chemical compatibility<\/li>\n\n\n\n<li>Selection of an appropriate candidate product family<\/li>\n\n\n\n<li>Provision of relevant TDS and SDS information<\/li>\n\n\n\n<li>Representative sample support<\/li>\n\n\n\n<li>Guidance for controlled side-by-side testing<\/li>\n\n\n\n<li>Review of laboratory and production feedback<\/li>\n\n\n\n<li>First commercial batch verification planning<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-83213f86\">Buyers can submit an existing paste, thickener or TDS through <a href=\"https:\/\/fsxchemical.com\/ar\/%d8%a7%d9%84%d8%ae%d8%af%d9%85%d8%a9\/%d9%85%d8%b7%d8%a7%d8%a8%d9%82%d8%a9-%d8%a7%d9%84%d8%b9%d9%8a%d9%86%d8%a7%d8%aa\/\">FSX Chemical Samples &amp; Matching <\/a>\ud83d\udce7\u00a0<strong>\u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a<a href=\"https:\/\/fsxchemical.com\/ar\/%d8%a7%d8%aa%d8%b5%d9%84-%d8%a8%d9%86%d8%a7\/\">: Service@fsxchemical.com<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-83b39512\">A candidate product remains subject to controlled laboratory and production evaluation. Final suitability depends on the complete formulation, fabric, equipment and post-treatment process.<\/p>","protected":false},"excerpt":{"rendered":"<p>Textile printing paste problems rarely have only one cause. This troubleshooting guide explains how to diagnose viscosity drift, lumps, filtration residue, foam, separation, poor transfer, spreading, uneven color and finished-fabric defects.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Troubleshooting Common Issues with Textile Printing Pastes","_seopress_titles_desc":"Troubleshoot common textile printing paste problems including viscosity drift, lumps, filtration, foam, spreading, poor transfer and uneven printing.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[1382,1379,1388,1386,1117,128,1369,1387],"class_list":["post-10366","post","type-post","status-publish","format-standard","hentry","category-technical-guides","tag-filtration","tag-print-definition","tag-printing-paste-stability","tag-printing-troubleshooting","tag-textile-chemicals","tag-textile-printing-paste","tag-textile-thickener","tag-viscosity-problems"],"acf":[],"_links":{"self":[{"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/posts\/10366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/comments?post=10366"}],"version-history":[{"count":1,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/posts\/10366\/revisions"}],"predecessor-version":[{"id":10368,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/posts\/10366\/revisions\/10368"}],"wp:attachment":[{"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/media?parent=10366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/categories?post=10366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fsxchemical.com\/ar\/wp-json\/wp\/v2\/tags?post=10366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}