{"id":28583,"date":"2026-04-26T07:12:31","date_gmt":"2026-04-26T07:12:31","guid":{"rendered":"https:\/\/doingcable.com\/?post_type=product&p=28583"},"modified":"2026-05-30T19:20:28","modified_gmt":"2026-05-30T19:20:28","slug":"water-blocking-yarn-water-swellable-yarn","status":"publish","type":"product","link":"https:\/\/doingcable.com\/ar\/product\/water-blocking-yarn-water-swellable-yarn\/","title":{"rendered":"\u062e\u064a\u0648\u0637 \u0645\u0627\u0646\u0639\u0629 \u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u0627\u0621 | \u062e\u064a\u0648\u0637 \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0645\u062f\u062f \u0628\u0627\u0644\u0645\u0627\u0621 \u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0644\u064a\u0629"},"content":{"rendered":"

In modern cable manufacturing, preventing longitudinal water migration is essential to maintaining electrical and optical integrity in wet, underground, submarine, or flooded environments. Water Blocking Yarn<\/strong><\/a> (\u0627\u0644\u0645\u0639\u0631\u0648\u0641 \u0623\u064a\u0636\u064b\u0627 \u0628\u0627\u0633\u0645 Water Swellable Yarn<\/strong>) is a high-performance water-blocking material that combines high-tenacity industrial polyester or nylon filaments with superabsorbent polymers (SAP) and specialized adhesives. When water contacts the yarn, the SAP rapidly absorbs moisture and expands to form a dense, stable gel that seals cable interstices and blocks further longitudinal penetration \u2014 all while preserving mechanical strength and production efficiency.<\/p>\n

As a trusted B2B supplier of complete cable materials and technical solutions with decades of global project experience, we recognize Water Blocking Yarn as a clean, lightweight, and highly effective alternative to traditional flooding compounds, tapes, or powders. It delivers proven swelling performance, excellent processability on high-speed stranding lines, and full compliance with international standards, making it the preferred choice for optical fiber, telecom, control, and power cable manufacturers seeking reliable moisture protection without compromising cable design or splicing ease.<\/p>\n

\"Water<\/p>\n

How Water Blocking Yarn Works: Dual-Structure Design for Reliable Protection<\/h2>\n

Water Blocking Yarn integrates two critical components into a single high-strength filament:<\/p>\n

    \n
  • Reinforcing base<\/strong>: High-tenacity polyester or nylon filament provides excellent tensile strength (typically 20\u201395 N) and elongation (15\u201330%), ensuring smooth processing during stranding, binding, or ripcord applications.<\/li>\n
  • Swelling layer<\/strong>: Superabsorbent polyacrylic ester powder and fibers that expand rapidly upon water contact, swelling up to 50\u201360 ml\/g (or higher in specialized grades) within 1\u20133 minutes to form a cohesive gel barrier.<\/li>\n<\/ul>\n

    This dual design fills gaps between conductors, fibers, tubes, or layers instantly, preventing water treeing, conductor corrosion, and dielectric degradation while maintaining cable flexibility and low weight.<\/p>\n

    \"Water<\/p>\n

    \u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u062a\u0642\u0646\u064a\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0648\u0641\u0648\u0627\u0626\u062f \u0627\u0644\u0623\u062f\u0627\u0621<\/h3>\n

    Rapid & High-Efficiency Swelling<\/strong> Achieves fast swelling kinetics (\u22656\u201312 mm in the first minute) with high gel strength, effectively blocking water migration and passing stringent water penetration tests.<\/p>\n

    Superior Mechanical Properties<\/strong><\/p>\n

      \n
    • Tensile strength: 20\u201395 N (depending on denier)<\/li>\n
    • Elongation: 15\u201330%<\/li>\n
    • Low dust and clean handling compared to loose powder<\/li>\n<\/ul>\n

      These properties support high-speed automated production without tearing or residue.<\/p>\n

      Versatile Configurations<\/strong> Available in a wide range of deniers (286\u20132,150 dtex or higher) and customized SAP loadings to match loose-tube, ribbon, micro-cable, or power cable designs. Both standard and saltwater-resistant grades are offered for submarine applications.<\/p>\n

      Thermal & Environmental Stability<\/strong><\/p>\n

        \n
      • Short-term processing temperature: Up to 230\u00b0C<\/li>\n
      • Long-term service temperature: Up to 90\u2013150\u00b0C<\/li>\n
      • Low moisture content, pH neutral, and full REACH & RoHS compliance<\/li>\n<\/ul>\n

        The gel remains stable over the cable\u2019s service life with minimal syneresis.<\/p>\n

        Clean, Cost-Effective & Splicing-Friendly<\/strong> No messy gels or additional blowing equipment required. The yarn can be cut with standard tools, significantly reducing splicing time and labor compared to flooding compounds.<\/p>\n

        \"Water<\/p>\n

        \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a<\/h3>\n

        Water Blocking Yarn is incorporated during conductor stranding, loose-tube filling, or layer binding in:<\/p>\n

          \n
        • Optical Fiber Cables<\/strong> (loose tube, ribbon, micro-cables, and submarine designs)<\/li>\n
        • Communication, Data & Telecom Cables<\/strong><\/li>\n
        • \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u0627\u0644\u0623\u062c\u0647\u0632\u0629<\/strong><\/li>\n
        • \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629 \u0645\u062a\u0648\u0633\u0637\u0629 \u0648\u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0647\u062f<\/strong> (including fan-shaped conductors)<\/li>\n
        • Submarine, Underwater & Outdoor Cables<\/strong> exposed to moisture risk<\/li>\n<\/ul>\n

          It is particularly effective in dry-core designs and hybrid constructions where lightweight, clean water blocking is required.<\/p>\n

          \"super<\/p>\n

          \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h3>\n

          \"Technical<\/p>\n

          All grades meet the Chinese industry standard YD\/T 1115.2-2001<\/strong>.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
          \u0627\u0644\u0645\u0639\u0644\u0645\u0629<\/th>\n\u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629<\/th>\n\u0634\u0631\u0648\u0637 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \/ \u0627\u0644\u0645\u0639\u064a\u0627\u0631<\/th>\n<\/tr>\n<\/thead>\n
          Water Absorption Capacity<\/td>\nUp to 340 ml\/g<\/td>\nWithin 1\u20133 minutes<\/td>\n<\/tr>\n
          Swelling Speed<\/td>\nRapid<\/td>\nUpon water contact<\/td>\n<\/tr>\n
          \u0642\u0648\u0629 \u0627\u0644\u0634\u062f<\/td>\nHigh (filament base)<\/td>\nDuring stranding process<\/td>\n<\/tr>\n
          \u0627\u0633\u062a\u0637\u0627\u0644\u0629<\/td>\n\u0645\u0645\u062a\u0627\u0632<\/td>\nMaintains flexibility<\/td>\n<\/tr>\n
          Operating Temperature (Short-term)<\/td>\nUp to 230\u00b0C<\/td>\nProcessing stability<\/td>\n<\/tr>\n
          Operating Temperature (Long-term)<\/td>\nUp to 90\u00b0C<\/td>\nService life<\/td>\n<\/tr>\n
          Compliance<\/td>\nYD\/T 1115.2-2001<\/td>\nIndustry standard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          (Custom filament types, SAP loading, and yarn diameters available to match exact cable designs.)<\/p>\n

          Water Blocking Yarn vs. Water Blocking Tape vs. Water Blocking Powder<\/h4>\n\n\n\n\n\n\n\n\n\n\n
          \u0645\u064a\u0632\u0629<\/th>\nWater Blocking Yarn<\/th>\nWater Blocking Tape<\/th>\n\u0645\u0633\u062d\u0648\u0642 \u0645\u0627\u0646\u0639 \u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u064a\u0627\u0647<\/th>\n\u0627\u0644\u0623\u0641\u0636\u0644 \u0644\u0640<\/th>\n<\/tr>\n<\/thead>\n
          Application Method<\/strong><\/td>\nStranding \/ binding (integrated)<\/td>\nLongitudinal \/ helical wrapping<\/td>\nBlown into interstices<\/td>\nHigh-speed automated lines<\/td>\n<\/tr>\n
          Swelling Speed<\/strong><\/td>\nVery fast (gel in 1\u20133 min)<\/td>\nFast<\/td>\nInstant<\/td>\nClean, precise blocking<\/td>\n<\/tr>\n
          Mechanical Strength<\/strong><\/td>\nHigh tensile & elongation<\/td>\n\u0645\u0639\u062a\u062f\u0644<\/td>\nNone<\/td>\nStructural reinforcement needed<\/td>\n<\/tr>\n
          Cleanliness & Splicing<\/strong><\/td>\nVery clean, easy cut & splice<\/td>\n\u0646\u0638\u064a\u0641<\/td>\nPotential dust\/residue<\/td>\nField installation & maintenance<\/td>\n<\/tr>\n
          Weight & Cable Diameter<\/strong><\/td>\nMinimal impact<\/td>\nSlight increase<\/td>\nVery low<\/td>\nLightweight cable designs<\/td>\n<\/tr>\n
          Typical Use<\/strong><\/td>\nFiber optic, power, telecom<\/td>\nOptical & power cables<\/td>\nConductor stranding<\/td>\nVersatile longitudinal protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          This comparison highlights why many manufacturers prefer Water Blocking Yarn for its balance of performance, cleanliness, and ease of integration.<\/p>\n

          \"Water<\/p>\n

          \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0648\u0636\u0645\u0627\u0646 \u0627\u0644\u062c\u0648\u062f\u0629<\/h3>\n

          Water Blocking Yarn complies with YD\/T 1115.2-2001<\/strong> and is widely tested to IEC and GR-20 equivalents for water penetration, ensuring consistent swelling performance, mechanical properties, and long-term gel stability. Every batch undergoes rigorous testing for absorption capacity, tensile strength, thermal stability, and environmental compliance.<\/p>\n

          \u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0648\u0627\u0644\u062a\u063a\u0644\u064a\u0641 \u0648\u0627\u0644\u062e\u062f\u0645\u0627\u062a \u0627\u0644\u0644\u0648\u062c\u0633\u062a\u064a\u0629<\/h3>\n

          Supplied in convenient rolls with inner diameters of 38 mm, 76 mm, or 94 mm and maximum outer diameter of 270 mm. Maximum loading capacity: 5.5\u20136.5 MT per 20-foot container. Robust packaging protects the yarn during sea freight and storage.<\/p>\n

          Clean, Reliable Longitudinal Water Protection for Modern Cable Designs<\/h3>\n

          Water Blocking Yarn (Water Swellable Yarn) combines high mechanical strength with rapid, high-capacity swelling to deliver a clean, efficient, and cost-effective longitudinal water-blocking solution. Its versatility, processability, and proven performance in optical fiber, telecom, control, and power cables make it indispensable for manufacturers producing reliable cables for wet or demanding environments.<\/p>\n

          \u0644\u0645\u0635\u0646\u0639\u064a \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0648\u0645\u0642\u0627\u0648\u0644\u064a \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0648\u0627\u0644\u062a\u0648\u0631\u064a\u062f \u0648\u0627\u0644\u0625\u0646\u0634\u0627\u0621\u0627\u062a \u0627\u0644\u0633\u0627\u0639\u064a\u0646 \u062c\u0648\u062f\u0629 \u0645\u0648\u062b\u0648\u0642\u0629<\/strong>, \u062d\u0644\u0648\u0644 \u062a\u0642\u0646\u064a\u0629 \u0645\u062e\u0635\u0635\u0629<\/strong>, \u060c \u0648 \u0642\u064a\u0645\u0629 \u0627\u0644\u0634\u0631\u0627\u0643\u0629 \u0637\u0648\u064a\u0644\u0629 \u0627\u0644\u0623\u062c\u0644<\/strong>, this material ensures your cables pass stringent water penetration tests while optimizing production efficiency and field performance.<\/p>\n

          \u0627\u0633\u062a\u0641\u0633\u0631 \u0627\u0644\u0622\u0646<\/strong> to request detailed technical data sheets, samples, custom specifications (including high-swell or submarine grades), or competitive bulk quotations tailored to your cable designs and stranding lines. Our expert team provides full technical consultation and one-stop material solutions that strengthen your competitive advantage in global cable markets.<\/p>","protected":false},"excerpt":{"rendered":"

          \u062e\u064a\u0648\u0637 \u0645\u0646\u0639 \u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u0627\u0621\u060c \u0648\u0627\u0644\u0645\u0639\u0631\u0648\u0641\u0629 \u0623\u064a\u0636\u064b\u0627 \u0628\u0627\u0633\u0645 \u062e\u064a\u0648\u0637 \u0627\u0644\u062a\u0645\u062f\u062f \u0627\u0644\u0645\u0627\u0626\u064a\u060c \u0647\u064a \u0645\u0627\u062f\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621 \u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062d\u062f\u064a\u062b\u0629. \u0648\u0647\u064a \u062a\u062c\u0645\u0639 \u0628\u064a\u0646 \u062e\u064a\u0648\u0637 \u0627\u0644\u0628\u0648\u0644\u064a\u0633\u062a\u0631 (\u0623\u0648 \u0627\u0644\u0646\u0627\u064a\u0644\u0648\u0646) \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0645\u062a\u0627\u0646\u0629 \u0645\u0639 \u0628\u0648\u0644\u064a\u0645\u0631\u0627\u062a \u0641\u0627\u0626\u0642\u0629 \u0627\u0644\u0627\u0645\u062a\u0635\u0627\u0635 \u0648\u0645\u0648\u0627\u062f \u0644\u0627\u0635\u0642\u0629 \u0645\u062a\u062e\u0635\u0635\u0629. \u0639\u0646\u062f \u062a\u0639\u0631\u0636\u0647\u0627 \u0644\u0644\u0645\u0627\u0621\u060c \u062a\u0645\u062a\u0635 \u0627\u0644\u062e\u064a\u0648\u0637 \u0627\u0644\u0631\u0637\u0648\u0628\u0629 \u0628\u0633\u0631\u0639\u0629 \u0648\u062a\u062a\u0645\u062f\u062f \u0644\u062a\u0634\u0643\u0644 \u0647\u0644\u0627\u0645\u064b\u0627 \u0643\u062b\u064a\u0641\u064b\u0627 \u064a\u0633\u062f \u0645\u0633\u0627\u0645\u0627\u062a \u0627\u0644\u0643\u0627\u0628\u0644 \u0628\u0641\u0639\u0627\u0644\u064a\u0629\u060c \u0645\u0627\u0646\u0639\u064b\u0627 \u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u0627\u0621 \u0637\u0648\u0644\u064a\u064b\u0627 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0644\u0628 \u0627\u0644\u0643\u0627\u0628\u0644.<\/p>","protected":false},"featured_media":29462,"comment_status":"open","ping_status":"closed","template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[21,93,91],"product_tag":[245,235,242,243],"class_list":{"0":"post-28583","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-all-product","7":"product_cat-auxiliary-material-for-cable","8":"product_cat-cable-material","9":"product_tag-optical-fiber-cable-yarn","10":"product_tag-power-cable-water-blocking","11":"product_tag-water-blocking-yarn","12":"product_tag-water-swellable-yarn","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/comments?post=28583"}],"version-history":[{"count":5,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28583\/revisions"}],"predecessor-version":[{"id":30196,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28583\/revisions\/30196"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media\/29462"}],"wp:attachment":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media?parent=28583"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_brand?post=28583"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_cat?post=28583"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_tag?post=28583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}