{"id":4356,"date":"2025-11-22T16:04:59","date_gmt":"2025-11-22T16:04:59","guid":{"rendered":"https:\/\/fsxchemical.com\/?p=4356"},"modified":"2026-07-02T09:48:28","modified_gmt":"2026-07-02T09:48:28","slug":"sodium-alginate-for-screen-printing-paste-formulation-application-and-troubleshooting","status":"publish","type":"post","link":"https:\/\/fsxchemical.com\/bn\/blog\/sodium-alginate-for-screen-printing-paste-formulation-application-and-troubleshooting\/","title":{"rendered":"Sodium Alginate for Screen Printing: Paste Formulation, Application, and Troubleshooting"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-ee23f2f9\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">Screen printing with reactive dyes on cotton and cellulosic fabrics requires a printing paste that delivers consistent viscosity, clean pattern transfer, and reliable dye fixation across long production runs. Sodium alginate is the standard thickener for this application \u2014 but getting paste formulation, application, and troubleshooting right requires understanding how the variables interact.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3ec783c8\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">This guide covers the key elements of sodium alginate paste formulation for reactive dye screen printing, how to optimize application for flat and rotary screen processes, and how to diagnose and resolve the most common production problems.<\/a><\/p>\n\n\n\n<div class=\"wp-block-wd-divider wd-style-line wd-5285aba9\"><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e32078b8\">Sodium Alginate Paste Formulation for Reactive Dye Screen Printing<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9c9a777e\">Core Components of a Reactive Dye Printing Paste<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-37aded17\">A standard reactive dye printing paste for screen printing on cotton contains the following core components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\"><strong>\u09b8\u09cb\u09a1\u09bf\u09af\u09bc\u09be\u09ae \u0985\u09cd\u09af\u09be\u09b2\u099c\u09bf\u09a8\u09c7\u099f<\/strong> \u2014 the primary thickener, controlling paste viscosity and rheology<\/a><\/li>\n\n\n\n<li><strong>Reactive dye<\/strong> \u2014 dissolved in the paste at the concentration required for the target color depth<\/li>\n\n\n\n<li><strong>Alkali<\/strong> \u2014 typically sodium carbonate (soda ash) or sodium bicarbonate, required to raise paste pH for reactive dye fixation during steaming<\/li>\n\n\n\n<li><strong>Urea<\/strong> \u2014 a hygroscopic agent that retains moisture during steaming to support dye dissolution and fixation<\/li>\n\n\n\n<li><strong>Anti-reducing agent<\/strong> \u2014 such as sodium m-nitrobenzenesulphonate, used to prevent reduction of certain reactive dyes during steaming<\/li>\n\n\n\n<li><strong>Water<\/strong> \u2014 the solvent medium; water quality (hardness, ionic content) affects paste performance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b473f4a6\">The proportions of each component depend on the dye class, target color depth, fabric type, and steaming conditions. There is no single universal formula \u2014 paste recipes are typically developed for specific dye classes and adjusted based on production experience.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b8505050\">Sodium Alginate Concentration and Viscosity Target<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-80536006\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">Sodium alginate concentration in the finished paste typically ranges from 3% to 6% (w\/w) for reactive dye screen printing, depending on the viscosity grade used and the target paste viscosity. Medium to high viscosity grades are most commonly used for screen printing paste.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5dba188e\">Target paste viscosity for screen printing typically falls in the range of 8,000 to 20,000 mPa\u00b7s (at low shear), though the appropriate value within this range depends on screen mesh count, fabric weight, and printing speed. Higher-count mesh screens (finer mesh openings) generally require lower viscosity paste; lower-count screens can accommodate higher viscosity.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d7a02368\">Prepare the sodium alginate paste base first \u2014 dissolve the alginate in water to your target concentration and confirm viscosity \u2014 before adding dye, alkali, and other components. Adding alkali to a cold alginate base reduces the time window for paste use, as alkali-catalyzed degradation begins immediately after addition.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-5d265a2a\">Alkali Selection and Timing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1e07d293\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">The choice of alkali affects both paste stability and fixation efficiency. Sodium carbonate (soda ash) at typical concentrations (10\u201320 g\/L) provides a higher pH than sodium bicarbonate and supports faster fixation but also accelerates paste degradation \u2014 particularly at elevated ambient temperatures. Sodium bicarbonate gives a lower pH and slower fixation, which can be advantageous for extended print runs where paste stability is a priority.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-28535fc8\">In two-phase printing processes, alkali is applied separately (by padding the fabric before printing, or by post-printing treatment) rather than being included in the print paste. This approach extends paste pot life significantly and is used in some high-volume operations where paste stability across a full shift is important.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e15685d1\">Regardless of which approach you use, alkali should be added to the paste as close to the time of use as practical, and paste containing alkali should not be stored beyond the shift in which it was prepared.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-1024x768.webp\" class=\"wp-image-7959\" style=\"aspect-ratio:1.3333183108747577;width:541px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-1024x768.webp 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-300x225.webp 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-768x576.webp 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-600x450.webp 600w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4-150x113.webp 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/\u7b2c1\u7bc7\u6587\u7ae0A-4.webp 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-wd-divider wd-style-line wd-32a6ec90\"><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-75551f89\"><em><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">Flat Screen vs. Rotary Screen Printing: Paste Requirements<\/a><\/em><\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-fbdf8c0b\">Flat Screen Printing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-11005dd4\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">In flat screen printing, paste is applied to the screen and pushed through the mesh onto the stationary fabric by a squeegee moving across the screen. The screen is then lifted and the fabric advances before the next print stroke.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a653864d\">Flat screen printing typically operates at lower speed than rotary screen printing and allows slightly more flexibility in paste viscosity. The paste needs to flow readily under squeegee pressure but should not spread beyond the screen opening boundaries before the screen is lifted. Medium viscosity sodium alginate grades at concentrations toward the lower end of the typical range (3\u20134%) are commonly used.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4a558b71\">One practical consideration in flat screen printing is paste drying on the screen surface between strokes if the print speed is slow. If this is occurring, check whether paste viscosity is too high (thicker paste dries faster at the surface), whether ambient humidity is very low, or whether the time between strokes is longer than typical.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-1008c65e\">Rotary Screen Printing<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c5f22cfa\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">In rotary screen printing, paste is fed continuously into the inside of a rotating cylindrical screen and pushed through the mesh by an internal squeegee or magnetic bar as the fabric moves beneath. Rotary screen printing operates at much higher speeds than flat screen printing and requires paste that maintains consistent rheology throughout a long production run.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6e8bbca6\">Paste viscosity stability is particularly important in rotary screen printing \u2014 viscosity that drifts during the run causes shade variation across the fabric length. Medium to high viscosity sodium alginate grades at concentrations toward the higher end of the typical range (4\u20136%) are commonly used, and paste is typically prepared in large batches to minimize preparation frequency during a run.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f11f9407\">Rotary screen paste systems are often enclosed or covered to reduce evaporation and viscosity change due to water loss during the run. If viscosity is increasing during a run without other explanation, check whether evaporation is occurring in the paste feed system.<\/p>\n\n\n\n<div class=\"wp-block-wd-divider wd-style-line wd-9de25065\"><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-2320842d\">Common Screen Printing Problems and Paste-Related Causes<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-71a43224\">Color Bleeding and Pattern Edge Sharpness<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fa16ebec\">Color bleeding \u2014 where color spreads beyond the intended pattern boundary \u2014 is one of the most common defects in reactive dye screen printing and is frequently related to paste viscosity. Paste that is too fluid does not hold the dye in place after transfer to the fabric; the dye migrates laterally before fixation, creating soft or blurred pattern edges.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1a0dc88e\">If bleeding is occurring, first check paste viscosity at the time of printing (not just at preparation). If viscosity has dropped during the run, investigate the cause of viscosity loss \u2014 degradation, evaporation, or temperature increase are the most common causes. If viscosity is at the correct level and bleeding is still occurring, consider whether the screen mesh count is appropriate for the pattern fineness, and whether fabric surface preparation is adequate.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a4387834\">Screen Blockage<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-431ccda4\">Screen blockage \u2014 paste drying in or on the screen mesh and preventing clean transfer \u2014 can result from paste with excessive viscosity, paste that contains undissolved particles, paste that dries too quickly at the mesh surface, or inadequate cleaning between runs.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-eb2de942\">For blockage caused by undissolved particles, check sodium alginate dissolution completeness during paste preparation \u2014 filter a sample of the prepared paste base through a fine mesh and check for retained particles. If particles are present, extend mixing time or check water temperature during dissolution.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-38737cba\">For blockage caused by surface drying, check whether paste viscosity is higher than needed, whether ambient humidity is very low, or whether print speed is slow enough that paste is sitting on the mesh surface for extended periods between strokes.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-3945b16b\">Uneven Color Depth Across the Fabric Width<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-665cd0b6\">Uneven color depth across the fabric width \u2014 often showing as darker edges and lighter center, or vice versa \u2014 typically indicates uneven paste transfer rather than a dye or fixation problem. Common causes include uneven squeegee pressure across the screen width, screen tension variation, or paste viscosity inconsistency within the batch.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5101542d\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">Check paste viscosity by sampling from different positions in the paste trough \u2014 front, middle, and back \u2014 to confirm that viscosity is uniform throughout the batch. If viscosity varies within the trough, the paste was not adequately mixed before use or separation is occurring during the run.<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-1024x768.jpg\" class=\"wp-image-7958\" style=\"aspect-ratio:1.3333183108747577;width:571px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-1024x768.jpg 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-300x225.jpg 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-768x576.jpg 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-600x450.jpg 600w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg-150x113.jpg 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test.jpg.jpg 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-dfc0976a\">Paste Transfer Inconsistency Between Early and Late Prints<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8a08985a\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">If color depth is consistent within individual prints but differs between early and late prints in a production run, the cause is usually paste viscosity change during the run rather than an application problem. Measure paste viscosity at regular intervals \u2014 at preparation, mid-run, and end-of-run \u2014 to establish whether viscosity is drifting and at what rate.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7f4dd417\">If viscosity is dropping during the run, refer to the viscosity stability guidance and investigate temperature, mechanical shear, and alkali degradation as potential causes. If viscosity is increasing, check for evaporation from the paste system.<\/p>\n\n\n\n<div class=\"wp-block-wd-divider wd-style-line wd-bfb664b2\"><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-603b88f1\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/digital-printing-application\/\" data-type=\"page\" data-id=\"6094\">Post-Printing Process: Drying, Steaming, and Washing-Off<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-6742037f\">Intermediate Drying Before Steaming<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e4d4ceb3\">After printing, the fabric is typically dried before entering the steamer. Intermediate drying removes surface moisture from the paste film and prevents dye migration during the early part of the steaming process. However, over-drying \u2014 removing too much moisture from the paste film \u2014 reduces the moisture available for dye fixation during steaming and can lower fixation rate.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b1e336a0\">The appropriate drying conditions depend on the paste formulation (particularly urea content, which retains moisture), the steamer type, and the dye class. Confirm drying temperature and time with reference to your paste formulation and steaming system. If fixation rate is lower than expected and steaming conditions are correct, check whether intermediate drying is removing too much moisture before steaming begins.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8b7551de\">Steaming for Reactive Dye Fixation<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0db6911b\">Reactive dye fixation requires steaming in saturated steam \u2014 steam at 100% relative humidity at the steaming temperature. For most reactive dye classes on cotton, steaming at 100\u2013102\u00b0C for 8 to 12 minutes is standard. The sodium alginate paste must retain adequate moisture during steaming to keep the fiber swollen and allow dye molecules to diffuse in and react with hydroxyl groups.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e2754f8f\">If fixation rate is consistently lower than expected despite correct steaming time and temperature, check steam saturation in the steamer \u2014 unsaturated or superheated steam dries the paste film rather than maintaining moisture, reducing fixation. Also confirm that urea content in the paste is adequate for your steaming conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-809480e5\">Washing-Off After Steaming<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ef6aca9c\">After fixation, the fabric must be washed to remove unfixed dye, hydrolyzed dye, and residual sodium alginate from the fabric surface. The standard washing-off sequence for reactive dye printing is: cold rinse, hot wash (80\u201395\u00b0C) with soaping agent, second hot wash, cold rinse.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9ab44985\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">Sodium alginate dissolves readily in hot water and is removed efficiently in the hot wash stage without requiring enzymatic or chemical assistance. If residual paste is detected on the fabric after washing \u2014 by tactile assessment, UV inspection, or chemical test \u2014 extend the hot wash time or increase wash temperature rather than adding chemicals.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1aaab310\">Incomplete washing-off leaves unfixed dye on or near the fiber surface, which reduces wash fastness even when fixation rate was adequate. Ensuring thorough washing-off is as important as optimizing the paste formulation and steaming conditions for achieving target fastness grades.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-1024x768.jpg\" class=\"wp-image-7956\" style=\"aspect-ratio:1.3333183108747577;width:513px;height:auto\" srcset=\"https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-1024x768.jpg 1024w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-300x225.jpg 300w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-768x576.jpg 768w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-600x450.jpg 600w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1-150x113.jpg 150w, https:\/\/fsxchemical.com\/wp-content\/uploads\/2025\/11\/textile-printing-thickener-performance-test-1.jpg-5-1.jpg 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-wd-divider wd-style-line wd-526c6e6a\"><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-60cf1321\">How FSX Chemical Supports Your Screen Printing Process<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-398eaeb8\"><a href=\"https:\/\/fsxchemical.com\/bn\/applications\/sodium-alginate-application\/\" data-type=\"page\" data-id=\"6069\">FSX Chemical supplies sodium alginate grades for reactive dye flat screen and rotary screen printing, across a range of viscosity specifications suited to different fabric types, screen mesh counts, and printing speeds. Technical datasheets, batch certificates of analysis, and sample quantities are available on request.<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-499d27c9\">If you are developing a new paste formulation, troubleshooting a production problem, or evaluating a grade change, our technical team can assist with paste formulation guidance and grade selection based on your specific process conditions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4899f598\"><strong>Next steps:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/fsxchemical.com\/bn\/contact-us\/\" data-type=\"page\" data-id=\"20\"><strong>\u099f\u09bf\u09a1\u09bf\u098f\u09b8 \u0985\u09a8\u09c1\u09b0\u09cb\u09a7 \u0995\u09b0\u09c1\u09a8<\/strong> \u2014 review viscosity, DS, and concentration specifications for your target screen printing application<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/fsxchemical.com\/bn\/contact-us\/\" data-type=\"page\" data-id=\"20\"><strong>\u09a8\u09ae\u09c1\u09a8\u09be \u0985\u09a8\u09c1\u09b0\u09cb\u09a7 \u0995\u09b0\u09c1\u09a8<\/strong> \u2014 run paste preparation and print trials before committing to bulk volume<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/fsxchemical.com\/bn\/contact-us\/\" data-type=\"page\" data-id=\"20\"><strong>\u0997\u09cd\u09b0\u09c7\u09a1 \u09ae\u09bf\u09b2\u09be\u09a8\u09cb\u09b0 \u099c\u09a8\u09cd\u09af \u0985\u09a8\u09c1\u09b0\u09cb\u09a7 \u0995\u09b0\u09c1\u09a8<\/strong> \u2014 share your fabric type, screen mesh, and printing speed for a specific grade recommendation<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/fsxchemical.com\/bn\/contact-us\/\" data-type=\"page\" data-id=\"20\"><strong>\u0986\u09ae\u09be\u09a6\u09c7\u09b0 \u09aa\u09cd\u09b0\u09af\u09c1\u0995\u09cd\u09a4\u09bf\u0997\u09a4 \u09a6\u09b2\u09c7\u09b0 \u09b8\u09be\u09a5\u09c7 \u09af\u09cb\u0997\u09be\u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8<\/strong> \u2014 for paste formulation support or screen printing troubleshoo<\/a>ting\ud83d\udce7 <strong>\u0987\u09ae\u09c7\u0987\u09b2<a href=\"https:\/\/fsxchemical.com\/bn\/contact-us\/\">: Service@fsxchemical.com<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Reactive dye screen printing with sodium alginate requires correct paste formulation, viscosity control, and steaming conditions. This guide covers flat and rotary screen paste requirements, alkali timing, common production defects, and how to diagnose paste-related causes.<\/p>","protected":false},"author":2,"featured_media":8241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Sodium Alginate for Screen Printing: Paste Formulation, Application and Troubleshooting | FSX Chemical","_seopress_titles_desc":"How to formulate and apply sodium alginate printing paste for reactive dye screen printing? This guide covers paste components, flat and rotary screen differences, common defects, and troubleshooting steps.","_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":[1184,1182,1145,1183,1126,87,1114],"class_list":["post-4356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guides","tag-flat-screen-printing","tag-printing-paste-formulation","tag-reactive-dye-printing","tag-rotary-screen-printing","tag-screen-printing","tag-sodium-alginate","tag-textile-printing"],"acf":[],"_links":{"self":[{"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/posts\/4356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/comments?post=4356"}],"version-history":[{"count":4,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/posts\/4356\/revisions"}],"predecessor-version":[{"id":7966,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/posts\/4356\/revisions\/7966"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/media\/8241"}],"wp:attachment":[{"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/media?parent=4356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/categories?post=4356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fsxchemical.com\/bn\/wp-json\/wp\/v2\/tags?post=4356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}