{"id":671,"date":"2025-11-28T11:44:48","date_gmt":"2025-11-28T03:44:48","guid":{"rendered":"https:\/\/www.dstpvc.com\/?post_type=products&p=671"},"modified":"2026-01-29T09:59:31","modified_gmt":"2026-01-29T01:59:31","slug":"dst-pvc-granules-for-electric-cables-coating","status":"publish","type":"products","link":"https:\/\/www.dstpvc.com\/vi\/products\/dst-pvc-granules-for-electric-cables-coating\/","title":{"rendered":"H\u1ea1t nh\u1ef1a PVC DST d\u00f9ng \u0111\u1ec3 ph\u1ee7 c\u00e1p \u0111i\u1ec7n"},"content":{"rendered":"

Electric Cable Manufacturing Process Using PVC Granules<\/strong><\/h1>\n

The manufacturing of electric cables with PVC insulation or sheathing typically involves the following eight major steps<\/strong>:<\/p>\n

\n

1. Raw Material Preparation<\/strong><\/h2>\n

PVC Granules Selection<\/strong><\/h3>\n

\"Dst<\/strong><\/h3>\n

Factories choose specific PVC compounds depending on cable type:<\/p>\n

    \n
  • \n

    PVC insulation granules<\/strong> (for conductor insulation)<\/p>\n<\/li>\n

  • \n

    PVC sheathing granules<\/strong> (for outer jacket protection)<\/p>\n<\/li>\n

  • \n

    Specialized PVC compounds<\/strong> (e.g., flame-retardant, low-smoke, high-flexibility, anti-cold)<\/p>\n<\/li>\n<\/ul>\n

    Before use, PVC granules are normally:<\/p>\n

      \n
    • \n

      dried (to remove moisture)<\/p>\n<\/li>\n

    • \n

      pre-mixed with stabilizers or color masterbatch (if needed)<\/p>\n<\/li>\n<\/ul>\n

      \n

      2. Copper\/Aluminum Wire Drawing<\/strong><\/h2>\n

      Large copper or aluminum rods are drawn through a series of dies to reduce the diameter.<\/p>\n

      Process:<\/strong>
      Rod \u2192 Annealing machine \u2192 Multi-die drawing \u2192 Fine wire \u2192 Take-up reel<\/p>\n

      The goal is to produce smooth, uniform strands suitable for conductor stranding.<\/p>\n

      \n

      3. Conductor Stranding<\/strong><\/h2>\n

      Multiple drawn wires are twisted together to form a conductor with:<\/p>\n

        \n
      • \n

        higher flexibility<\/p>\n<\/li>\n

      • \n

        better electrical performance<\/p>\n<\/li>\n<\/ul>\n

        Types of stranding:<\/p>\n

          \n
        • \n

          Tight-stranded<\/p>\n<\/li>\n

        • \n

          Sector-shaped<\/p>\n<\/li>\n

        • \n

          Concentric<\/p>\n<\/li>\n

        • \n

          Compacted (for power cables)<\/p>\n<\/li>\n<\/ul>\n

          \n

          4. PVC Granules Extrusion for Insulation<\/strong><\/h2>\n

          This is the critical stage where PVC granules are melted and applied<\/strong> onto the conductor.<\/p>\n

          Extrusion Steps:<\/strong><\/h3>\n
            \n
          1. \n

            PVC granules fed into the extruder hopper<\/strong><\/p>\n<\/li>\n

          2. \n

            Heated in barrel (160\u2013190\u00b0C depending on formulation)<\/p>\n<\/li>\n

          3. \n

            Melt passes through screw compression<\/p>\n<\/li>\n

          4. \n

            Melted PVC is extruded around conductor<\/p>\n<\/li>\n

          5. \n

            Cooled in water trough<\/p>\n<\/li>\n

          6. \n

            Spark tester checks insulation purity<\/p>\n<\/li>\n<\/ol>\n

            Result:<\/strong>
            A perfectly round PVC-insulated conductor<\/strong>.<\/p>\n

            \n

            5. Twisting \/ Cabling (If Multi-core Cable)<\/strong><\/h2>\n

            For multi-core cables (2, 3, 4, or more insulated wires), the insulated conductors are twisted together.<\/p>\n

            May include:<\/p>\n

              \n
            • \n

              (nh\u01b0 canxi cacbonat) c\u0169ng r\u1ea5t quan tr\u1ecdng; ch\u00fang ph\u1ea3i m\u1ecbn v\u00e0 ph\u00e2n t\u00e1n \u0111\u1ec1u \u0111\u1ec3 tr\u00e1nh l\u00e0m gi\u00e1n \u0111o\u1ea1n hoa v\u0103n b\u1ec1 m\u1eb7t tinh t\u1ebf, \u0111\u1ed3ng th\u1eddi v\u1eabn \u0111\u00f3ng g\u00f3p v\u00e0o \u0111\u1ed9 c\u1ee9ng v\u00e0 t\u00ednh hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed c\u1ee7a \u1ed1ng. C\u00f4ng th\u1ee9c s\u1ebd d\u1ef1a tr\u00ean m\u1ed9t h\u1ee3p ch\u1ea5t<\/p>\n<\/li>\n

            • \n

              binding tape<\/p>\n<\/li>\n

            • \n

              separator layers<\/p>\n<\/li>\n<\/ul>\n

              This ensures cable roundness and mechanical stability.<\/p>\n

              \n

              6. PVC Sheathing Extrusion (Outer Jacket)<\/strong><\/h2>\n

              A second extrusion process applies the outer PVC sheath<\/strong>.<\/p>\n

              PVC sheathing material must provide:<\/p>\n

                \n
              • \n

                abrasion resistance<\/p>\n<\/li>\n

              • \n

                weather and UV resistance<\/p>\n<\/li>\n

              • \n

                flame retardancy<\/p>\n<\/li>\n

              • \n

                mechanical strength<\/p>\n<\/li>\n<\/ul>\n

                Process is similar to insulation extrusion:
                \nPVC granules \u2192 Extruder \u2192 Melt \u2192 Crosshead die \u2192 Cable sheathing \u2192 Cooling \u2192 Printing<\/p>\n

                \n

                7. Printing & Meter Marking<\/strong><\/h2>\n

                The finished cable is printed with:<\/p>\n

                  \n
                • \n

                  cable type<\/p>\n<\/li>\n

                • \n

                  size<\/p>\n<\/li>\n

                • \n

                  voltage rating<\/p>\n<\/li>\n

                • \n

                  length marking<\/p>\n<\/li>\n

                • \n

                  manufacturing date \/ batch<\/p>\n<\/li>\n<\/ul>\n

                  Inkjet printers are used during line operation.<\/p>\n

                  \n

                  8. Winding, Packaging, and Quality Inspection<\/strong><\/h2>\n

                  Final steps include:<\/p>\n

                    \n
                  • \n

                    winding onto coils or drums<\/p>\n<\/li>\n

                  • \n

                    visual inspection<\/p>\n<\/li>\n

                  • \n

                    electrical tests (resistance, dielectric strength, spark testing)<\/p>\n<\/li>\n

                  • \n

                    mechanical tests (tensile, elongation, ageing)<\/p>\n<\/li>\n<\/ul>\n

                    Once approved, cables are packaged and ready for shipment.<\/p>","protected":false},"excerpt":{"rendered":"

                    Our PVC granules feature a precision-designed formulation developed specifically for electric cable manufacturing, ensuring smooth extrusion, stable performance, and reliable long-term durability.<\/p>","protected":false},"featured_media":641,"template":"","adweb_product_categories":[70,19],"adweb_product_tags":[275,277,273,281,282,280,278,279,274,276],"class_list":["post-671","products","type-products","status-publish","has-post-thumbnail","hentry","adweb_product_cat-pvc-extrusion-grade-granules","adweb_product_cat-pvc-granules","adweb_product_tag-buy-dst-pvc-granules-for-electric-cables-coating","adweb_product_tag-cheap-dst-pvc-granules-for-electric-cables-coating","adweb_product_tag-china-dst-pvc-granules-for-electric-cables-coating","adweb_product_tag-dst-pvc-granules-for-electric-cables-coating-factory","adweb_product_tag-dst-pvc-granules-for-electric-cables-coating-for-sale","adweb_product_tag-dst-pvc-granules-for-electric-cables-coating-manufacturer","adweb_product_tag-dst-pvc-granules-for-electric-cables-coating-price","adweb_product_tag-dst-pvc-granules-for-electric-cables-coating-wholesale","adweb_product_tag-high-quality-dst-pvc-granules-for-electric-cables-coating","adweb_product_tag-hot-sale-dst-pvc-granules-for-electric-cables-coating"],"gallery":[650,640,619],"order":"0","acf":[],"_links":{"self":[{"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/adweb_products\/671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/adweb_products"}],"about":[{"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/types\/products"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/media\/641"}],"wp:attachment":[{"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/media?parent=671"}],"wp:term":[{"taxonomy":"adweb_product_cat","embeddable":true,"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/adweb_product_categories?post=671"},{"taxonomy":"adweb_product_tag","embeddable":true,"href":"https:\/\/www.dstpvc.com\/vi\/wp-json\/wp\/v2\/adweb_product_tags?post=671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}