{"id":4225,"date":"2026-07-16T18:45:25","date_gmt":"2026-07-16T18:45:25","guid":{"rendered":"https:\/\/fsxchemical.com\/?p=4225"},"modified":"2026-08-05T07:43:46","modified_gmt":"2026-08-05T07:43:46","slug":"%f0%9f%93%a7-email-servicefsxchemical-com","status":"publish","type":"post","link":"https:\/\/fsxchemical.com\/vi\/blog\/%f0%9f%93%a7-email-servicefsxchemical-com\/","title":{"rendered":"C\u00e1ch ch\u1ecdn ch\u1ea5t l\u00e0m \u0111\u1eb7c ph\u00f9 h\u1ee3p cho qu\u00e1 tr\u00ecnh in tr\u00ean v\u1ea3i"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-86bcddef\"><em><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-in-ky-thuat-so\/\" data-type=\"page\" data-id=\"6094\">Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m \u0111\u1eb7c ph\u00f9 h\u1ee3p cho in \u1ea5n tr\u00ean v\u1ea3i kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i v\u1ea3i. Ng\u01b0\u1eddi mua n\u00ean l\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m \u0111\u1eb7c sao cho ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng thu\u1ed1c nhu\u1ed9m ho\u1eb7c b\u1ed9t m\u00e0u, ph\u01b0\u01a1ng ph\u00e1p in, t\u00ednh l\u01b0u bi\u1ebfn mong mu\u1ed1n, y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng r\u1eeda tr\u00f4i v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf t\u1ea1i nh\u00e0 m\u00e1y.<\/a><\/em><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e0272395\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-in-ky-thuat-so\/\" data-type=\"page\" data-id=\"6094\">Choosing a textile printing thickener begins with the printing chemistry, not with a generic viscosity label. Cotton, polyester, viscose and blended fabrics can require very different paste behavior because the dye or pigment, fixation route, machine and washing process are different.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8184f92f\">A useful supplier recommendation should therefore connect the fabric to the complete application. The correct question is not simply \u201cWhich thickener works on cotton?\u201d It is \u201cWhich thickener should be tested for this cotton fabric, this colorant, this machine and this target print result?\u201d<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-ffbfa322\">Start with the Printing System, Not the Product Name<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b674ef28\">Why fabric alone is not enough<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-377bb3b2\">Fabric tells you how the substrate may absorb paste and respond to fixation, but it does not define the whole formulation. Reactive dye printing on cotton, pigment printing on cotton and digital pretreatment on cotton are three different chemical systems even though the fabric may be identical.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8d7f70a7\">The dye or pigment system often has the strongest influence on thickener compatibility. Printing method, screen geometry, machine speed, water quality, auxiliaries and the required wash-off also affect the final choice.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-75ae6c00\">Information to collect before comparing grades<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fabric and fibre composition, including blend ratio when applicable<\/li>\n\n\n\n<li>Colorant system: reactive, disperse, acid, vat, discharge or pigment<\/li>\n\n\n\n<li>Printing method: flat screen, rotary screen, roller, coating or digital pretreatment<\/li>\n\n\n\n<li>Current paste recipe or supplier TDS, if available<\/li>\n\n\n\n<li>Target viscosity with concentration, temperature, instrument or method and unit<\/li>\n\n\n\n<li>Main production issue, such as bleeding, screen blockage, slow dissolution, residue, poor wash-off or viscosity drift<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-35c34b34\">Match the Thickener to Fabric and Coloration Route<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bd4b1844\">Cotton and viscose with reactive dyes<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5ca22f87\"><a href=\"https:\/\/fsxchemical.com\/vi\/product\/alginat-natri\/\">Alginat natri<\/a> is a common benchmark thickener for reactive printing on cotton and viscose. A suitable grade can provide the paste body and flow needed for screen transfer while supporting practical wash-off after fixation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ead62106\">Do not select the grade from an HV, MV or LV label alone. Compare viscosity under the stated test conditions, hydration behavior, insoluble matter, paste filtration, compatibility with alkali and auxiliaries, and the print result in the factory\u2019s own formula.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1.webp\" alt=\"M\u1eabu v\u1ea3i in k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a vi\u1ec1n v\u00e0 \u0111\u1ed9 chi ti\u1ebft c\u1ee7a h\u00ecnh in\" class=\"wp-image-8712\" style=\"width:1022px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1-150x113.webp 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1-1000x750.webp 1000w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-print-edge-sharpness-comparison-1200x900-1-768x576.webp 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-7abab333\">Polyester with disperse dyes or pigments<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3fdd1013\">Polyester printing may use disperse colorants, pigments or digital routes. Depending on the process, the starting thickener route may be a selected CMS, synthetic thickener, compound system or a dedicated digital pretreatment rather than a standard reactive-printing alginate.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7e439979\">The trial should examine paste stability, print penetration, outline definition, fixation conditions and residue after post-treatment. A grade that performs well in reactive cotton printing should not be assumed to work in a disperse polyester process.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8a933f0a\">Blended fabrics<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3dd3ae21\">For cotton-polyester and other blends, first confirm whether the mill uses one colorant route, a combined route or separate process stages. The thickener must remain compatible with the complete recipe and with the fixation conditions required by both fibre components.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-104af67c\">Blends usually require a controlled lab trial because absorption, penetration and color balance can vary across the two fibres. Record results on the actual production fabric rather than relying on a generic blend description.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-544119ae\">Silk, wool and nylon with acid or selected reactive systems<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-94921622\">Protein and polyamide fibres may use acid dyes or other specialized printing routes. Sodium alginate or another dedicated thickener may be evaluated, but the choice should be confirmed against the dye class, pH, fixation method and fabric-handle requirement.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4c7adac3\">Ask for an application-specific recommendation and test the thickener with the exact dye and auxiliaries. Avoid extending a cotton-reactive recommendation to silk, wool or nylon without a separate trial.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-bff7750e\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/\" data-type=\"page\" data-id=\"6091\">How the Main Thickener Families Differ<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-302675c6\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-cua-natri-alginat\/\" data-type=\"page\" data-id=\"6069\">Alginat natri<\/a><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4fd2c627\">Best known as a thickener route for reactive textile printing, sodium alginate is selected around viscosity grade, dissolution, filtration, purity-related specifications, pH, moisture and batch consistency. Its suitability still depends on the complete formulation and process.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display.webp\" alt=\"M\u1eabu ch\u1ea5t l\u00e0m \u0111\u1eb7c in v\u1ea3i t\u1eeb natri alginat k\u00e8m dung d\u1ecbch v\u00e0 \u0111\u00e1nh gi\u00e1 tr\u00ean v\u1ea3i\" class=\"wp-image-9542\" style=\"width:1039px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display.webp 1448w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-150x113.webp 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-1200x900.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-sodium-alginate-website-product-display-16x12.webp 16w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-aa1f6bc4\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-cms\/\" data-type=\"page\" data-id=\"6085\">Carboxymethyl starch (CMS)<\/a><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-91be46d3\"><a href=\"https:\/\/fsxchemical.com\/vi\/product\/tinh-bot-carboxymethyl-cms\/\">Carboxymethyl starch grades<\/a> can be evaluated for selected reactive, disperse, pigment, vat, discharge or compound printing systems, depending on the product design. Buyers should confirm the intended process on the TDS and run a direct comparison against the current paste.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory.webp\" alt=\"M\u1eabu ch\u1ea5t l\u00e0m \u0111\u1eb7c d\u00f9ng trong in \u1ea5n tr\u00ean v\u1ea3i c\u1ee7a CMS k\u00e8m theo TDS, COA, SDS v\u00e0 bi\u00ean b\u1ea3n th\u1eed nghi\u1ec7m \u0111\u1ed9 nh\u1edbt\" class=\"wp-image-9716\" style=\"width:1042px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory.webp 1448w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-16x12.webp 16w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-1200x900.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cms-product-bag-powder-paste-tds-coa-sds-lab-factory-150x113.webp 150w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-cd67c11f\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-cmc\/\" data-type=\"page\" data-id=\"6079\">Carboxymethyl cellulose (CMC)<\/a><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1e3146e3\"><a href=\"https:\/\/fsxchemical.com\/vi\/product\/carboxymethyl-cellulose-cmc\/\">Carboxymethyl cellulose<\/a> is a cellulose-based rheology modifier used in selected pigment formulations, supporting thickener systems and other industrial applications. Degree of substitution, viscosity test conditions, purity, salt content, solubility and compatibility with binders or auxiliaries are important purchasing points.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7403b1bf\">CMC should not be treated as a universal substitute for sodium alginate in reactive dye printing. Use an application-specific grade recommendation and confirm compatibility by testing the full formula.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory.webp\" alt=\"Carboxymethyl Cellulose CMC powder and solution sample for reactive textile printing evaluation\" class=\"wp-image-9615\" style=\"width:1060px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory.webp 1448w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-16x12.webp 16w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-1200x900.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-cmc-carboxymethyl-cellulose-reactive-printing-lab-factory-150x113.webp 150w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0d97e557\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/\" data-type=\"page\" data-id=\"6091\">Synthetic and compound thickeners<\/a><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-af4edee3\">Synthetic and compound systems may provide high thickening efficiency or process-specific rheology, especially in pigment printing and specialized paste routes. Their behavior can change in the presence of electrolytes, binders, defoamers and other auxiliaries, so the complete recipe matters.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-4d0e3153\"><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-in-ky-thuat-so\/\" data-type=\"page\" data-id=\"6094\">Digital printing paste and pretreatment<\/a><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-12af6629\">Digital textile printing requires a separate selection route. Pretreatment viscosity, filtration, coating uniformity, ink chemistry, storage stability and fabric response are usually more important than matching a screen-printing paste by name. Buyers can review the available <a href=\"https:\/\/fsxchemical.com\/vi\/product\/hon-hop-in-ky-thuat-so\/\">h\u1ed7n h\u1ee3p in k\u1ef9 thu\u1eadt s\u1ed1<\/a> route before requesting a grade trial.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c.webp\" alt=\"DP-P pigment digital printing paste sample for fabric fastness and print evaluation\" class=\"wp-image-9372\" style=\"width:1034px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c.webp 1448w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-150x113.webp 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-1200x900.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-digital-printing-dp-p-pigment-printing-fabric-test-4x3_\u526f\u672c-16x12.webp 16w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-7c45c358\">Quick Selection Matrix<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Printing route<\/th><th>Starting thickener direction<\/th><th>What the trial must verify<\/th><\/tr><\/thead><tbody><tr><td>Reactive printing on cotton or viscose<\/td><td><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/\" data-type=\"page\" data-id=\"6091\">Sodium alginate as a common benchmark; selected CMS or compound route only after application review<\/a><\/td><td>Viscosity conditions, screen passing, outline, color response, wash-off and fabric handle<\/td><\/tr><tr><td>Pigment printing on multiple fabrics<\/td><td><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-cmc\/\" data-type=\"page\" data-id=\"6079\">Synthetic, CMC, CMS or compound system according to binder and recipe<\/a><\/td><td>Binder compatibility, storage stability, print definition, rubbing result and handle<\/td><\/tr><tr><td>In ph\u00e2n t\u00e1n tr\u00ean v\u1ea3i polyester<\/td><td><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-cms\/\" data-type=\"page\" data-id=\"6085\">Selected CMS, synthetic or compound thickener; dedicated pretreatment for digital routes<\/a><\/td><td>High-temperature process fit, penetration, residue, shade consistency and machine behavior<\/td><\/tr><tr><td>Acid printing on silk, wool or nylon<\/td><td><a href=\"https:\/\/fsxchemical.com\/vi\/industrial-printing-chemicals\/\" data-type=\"page\" data-id=\"9887\">Application-specific alginate or specialized thickener<\/a><\/td><td>Dye compatibility, pH, fixation, wash-off and fabric handle<\/td><\/tr><tr><td>Digital textile pretreatment<\/td><td><a href=\"https:\/\/fsxchemical.com\/vi\/ung-dung\/ung-dung-in-ky-thuat-so\/\" data-type=\"page\" data-id=\"6094\">Dedicated digital printing paste or pretreatment grade<\/a><\/td><td>Filtration, coating uniformity, storage, ink response, definition and penetration<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-266eb05b\"><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">Specifications Buyers Should Compare<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a6710ab3\">Viscosity with full test conditions<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0a2e566a\">A viscosity number is not comparable unless the concentration, temperature, hydration time, instrument or method and unit are stated. Two suppliers can use the same \u201chigh viscosity\u201d description while testing at different concentrations.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-3896c4fa\">Rheology and recovery after shear<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fea142e1\">Printing paste must flow through the screen or coating system and then recover enough body to hold the pattern. A laboratory viscosity value is useful, but a real paste trial is needed to assess screen behavior, edge definition and spreading.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9a9f2a02\">Dissolution, filtration and insoluble matter<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f06598dd\">Slow hydration, gel particles or insoluble residue can create filtration problems and screen blockage. Compare preparation time, mixing requirements, filtration behavior and the appearance of the prepared paste under the same conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-64da2a28\">pH and compatibility with the full recipe<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-87cf6bd0\">Alkali, salts, binders, fixatives, defoamers and other auxiliaries can change viscosity and stability. Test the candidate thickener in the complete formulation, not only as a solution in water.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-7672c25f\">Batch consistency and documentation<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c8863965\">Request a TDS before comparison, an SDS for handling and storage, and a batch-specific COA for the ordered lot when available. The specification should show the test method and acceptance range for the parameters that matter to production.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-c88ca492\"><a href=\"https:\/\/fsxchemical.com\/vi\/dich-vu\/\" data-type=\"page\" data-id=\"5904\">How to Run a Grade Matching Trial<\/a><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Define the reference:<\/strong> Record the current product, formula, target viscosity, machine, fabric and acceptance criteria before testing a replacement.<\/li>\n\n\n\n<li><strong>Normalize the comparison:<\/strong> Compare candidates at equivalent target paste behavior. Equal dosage is not always a fair comparison when thickening efficiency differs.<\/li>\n\n\n\n<li><strong>Use controlled preparation:<\/strong> Keep water quality, temperature, mixing sequence, speed, hydration time and resting time consistent across samples.<\/li>\n\n\n\n<li><strong>Test the full formulation:<\/strong> Add the actual dye or pigment, alkali, binder and auxiliaries, then monitor viscosity and appearance over the factory\u2019s normal holding period.<\/li>\n\n\n\n<li><strong>Run the print and post-treatment:<\/strong> Evaluate screen or coating behavior, print outline, penetration, color response, wash-off, residue and fabric handle under production-relevant conditions.<\/li>\n\n\n\n<li><strong>Confirm sample-to-bulk controls:<\/strong> Before volume purchasing, agree on the specification, COA parameters, packaging, traceability and the process for handling an out-of-specification batch.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-3106fad0\">Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p trong qu\u00e1 tr\u00ecnh tuy\u1ec3n ch\u1ecdn<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choosing only by fabric name and ignoring the dye or pigment system<\/li>\n\n\n\n<li>Comparing viscosity values measured under different test conditions<\/li>\n\n\n\n<li>Assuming the highest viscosity grade will give the best production result<\/li>\n\n\n\n<li>Testing the thickener in water but not in the full printing formulation<\/li>\n\n\n\n<li>Changing several formulation variables at the same time during a trial<\/li>\n\n\n\n<li>Accepting \u201ceco-friendly,\u201d \u201chigh purity\u201d or compliance claims without product-specific evidence<\/li>\n\n\n\n<li>Placing a bulk order before checking a representative sample and the relevant documents<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-50aed0b1\"><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">N\u00ean g\u1eedi h\u00f3a ch\u1ea5t FSX n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch v\u1ec1 c\u1ea5p \u0111\u1ed9?<\/a><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner.webp\" alt=\"\" class=\"wp-image-10155\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner.webp 1448w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-16x12.webp 16w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-1200x900.webp 1200w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2026\/07\/fsx-chemical-product-sample-quality-review-team-banner-150x113.webp 150w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1abfa15d\"><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">FSX Chemical can review a requirement more effectively when the technical and commercial inputs arrive together. Share as much of the following information as your confidentiality rules allow:<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">Fabric or fibre composition and target end use<\/a><\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng thu\u1ed1c nhu\u1ed9m, b\u1ed9t m\u00e0u ho\u1eb7c m\u1ef1c in<\/li>\n\n\n\n<li>Printing method, machine type and production speed direction<\/li>\n\n\n\n<li>Current product name, TDS, sample or paste formula<\/li>\n\n\n\n<li>\u0110\u1ed9 nh\u1edbt m\u1ee5c ti\u00eau theo ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ea7y \u0111\u1ee7<\/li>\n\n\n\n<li>Main production problem and desired trial outcome<\/li>\n\n\n\n<li>Estimated quantity, packing requirement and destination<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-4bd447e1\"><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">Ask for Grade Matching Before Bulk Purchase<\/a><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9bd6265a\"><a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\" data-type=\"page\" data-id=\"20\">Send your fabric, colorant system, printing process, target viscosity and current product information. FSX Chemical can review whether a sodium alginate, CMC, CMS, compound thickener or digital printing paste route should be considered as the starting point for a control<\/a>led sample trial\ud83d\udce7\u00a0<strong>Email<a href=\"https:\/\/fsxchemical.com\/vi\/lien-he-voi-chung-toi\/\">: Service@fsxchemical.com<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m \u0111\u1eb7c ph\u00f9 h\u1ee3p cho in \u1ea5n tr\u00ean v\u1ea3i kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i v\u1ea3i. Ng\u01b0\u1eddi mua n\u00ean l\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m \u0111\u1eb7c sao cho ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng thu\u1ed1c nhu\u1ed9m ho\u1eb7c b\u1ed9t m\u00e0u, ph\u01b0\u01a1ng ph\u00e1p in, t\u00ednh l\u01b0u bi\u1ebfn mong mu\u1ed1n, y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng r\u1eeda tr\u00f4i v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf t\u1ea1i nh\u00e0 m\u00e1y.<\/p>","protected":false},"author":1,"featured_media":8557,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"How to Choose a Textile Printing Thickener | FSX Chemical","_seopress_titles_desc":"Learn how to match textile printing thickeners to fabric, dye system, printing method, viscosity needs, wash-off and production trial requirements.","_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":[1123,1208,1129,1145,87,1124,1282],"class_list":["post-4225","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guides","tag-carboxymethyl-cellulose","tag-carboxymethyl-starch","tag-pigment-printing","tag-reactive-dye-printing","tag-sodium-alginate","tag-textile-printing-thickener","tag-thickener-selection"],"acf":[],"_links":{"self":[{"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/posts\/4225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/comments?post=4225"}],"version-history":[{"count":7,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/posts\/4225\/revisions"}],"predecessor-version":[{"id":10174,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/posts\/4225\/revisions\/10174"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/media\/8557"}],"wp:attachment":[{"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/media?parent=4225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/categories?post=4225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fsxchemical.com\/vi\/wp-json\/wp\/v2\/tags?post=4225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}