{"id":31074,"date":"2026-08-26T14:03:18","date_gmt":"2026-08-26T14:03:18","guid":{"rendered":"https:\/\/doingcable.com\/?p=31074"},"modified":"2026-08-26T14:03:19","modified_gmt":"2026-08-26T14:03:19","slug":"what-is-high-speed-insulation-extrusion-production-line","status":"publish","type":"post","link":"https:\/\/doingcable.com\/tr\/what-is-high-speed-insulation-extrusion-production-line\/","title":{"rendered":"Y\u00fcksek H\u0131zl\u0131 \u0130zolasyon Ekstr\u00fczyon \u00dcretim Hatt\u0131"},"content":{"rendered":"

A Y\u00fcksek H\u0131zl\u0131 Yal\u0131t\u0131m Ekstr\u00fczyon \u00dcretim Hatt\u0131<\/a><\/strong> is a continuous cable manufacturing system that applies PVC, PE, XLPE, LSZH\/HFFR or nylon insulation (and optional skin\/stripe or jacket layers) onto a moving conductor at line speeds typically from 80 m\/min up to 500\u20131 500 m\/min, depending on conductor size and compound. The line integrates pay-off, conductor preheating, single or multi-extruder crosshead application, closed-loop diameter\/eccentricity control, water cooling, spark testing and dual take-up. Its purpose is to deliver insulation wall thickness, concentricity and surface quality that comply with IEC 60502, IEC 60227, UL 83 and GB\/T building-wire \/ power-cable standards at industrial throughput.<\/p>\n\n\n\n

Typical building-wire lines reach 300\u20131 200 m\/min on 0.5\u20136 mm\u00b2 conductors. Power-cable insulation lines for larger sections run slower (45\u2013180 m\/min) but handle finished diameters up to \u03a680\u2013140 mm. Wall-thickness tolerance of \u00b15 % and concentricity \u226585\u201395 % are standard targets on modern closed-loop lines.<\/p>\n\n\n\n

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inquiry now<\/a><\/div>\n<\/div>\n\n\n\n
\"\"<\/figure>\n\n\n\n

How the Line Works \u2014 Process Sequence and Critical Parameters<\/h3>\n\n\n\n

Conductor (solid or stranded copper\/aluminium) is paid off under controlled tension, optionally drawn and annealed in tandem, then preheated (typically 80\u2013140 \u00b0C) so that insulation bonds without voids. Compound pellets are dried, fed into a single-screw extruder (L\/D 25:1\u201330:1 for PVC; longer, gentler screws for XLPE to avoid premature scorch). Melt is forced through a pressure or tube-type crosshead. For dual-colour, skin\/stripe or XLPE MV constructions, a second (or third) extruder feeds the same crosshead (co-extrusion) or a tandem head.<\/p>\n\n\n\n

After the die the insulated core enters a multi-pass spray \/ immersion cooling trough. A practical sizing rule used by process engineers is approximately 1 m of active cooling length per 1 mm wall thickness per 10 m\/min line speed; high-speed fine-wire lines add air quench or pressurised water. Laser diameter gauges and eccentricity sensors close the loop to screw rpm or haul-off speed. A DC spark tester (typically 5\u201315 kV for LV, higher for MV) detects pinholes before dual automatic take-up.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Typical Line Speeds by Conductor Size and Compound<\/h3>\n\n\n\n
Kondakt\u00f6r<\/th>Insulation thickness (typ.)<\/th>Finished OD (typ.)<\/th>XLPE speed<\/th>LSZH\/HFFR speed<\/th>PVC speed<\/th><\/tr><\/thead>
0.5 mm\u00b2<\/td>0.4 mm<\/td>1.9\u20132.3 mm<\/td>~300 m\/min<\/td>\u2014<\/td>350 m\/min<\/td><\/tr>
1.0 mm\u00b2<\/td>0.4 mm<\/td>2.2\u20132.7 mm<\/td>~300 m\/min<\/td>\u2014<\/td>350 m\/min<\/td><\/tr>
1.5 mm\u00b2<\/td>0.6 mm<\/td>2.6\u20133.2 mm<\/td>~280 m\/min<\/td>\u2014<\/td>320 m\/min<\/td><\/tr>
2.5 mm\u00b2<\/td>0.6 mm<\/td>3.2\u20133.9 mm<\/td>~190 m\/min<\/td>\u2014<\/td>240 m\/min<\/td><\/tr>
4.0 mm\u00b2<\/td>0.8 mm<\/td>3.6\u20134.8 mm<\/td>~120 m\/min<\/td>\u2014<\/td>150 m\/min<\/td><\/tr>
6.0 mm\u00b2<\/td>0.8 mm<\/td>4.1\u20135.6 mm<\/td>~100 m\/min<\/td>\u2014<\/td>130 m\/min<\/td><\/tr>
10 mm\u00b2<\/td>0.8\u20131.0 mm<\/td>5.6\u20137.6 mm<\/td>~80 m\/min<\/td>\u2014<\/td>80 m\/min<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fine-wire \/ automotive \/ data-cable lines with 30\u201360 mm screws routinely exceed 800\u20131 500 m\/min. Large power-cable insulation lines (screw \u03a6100\u2013180 mm) run 45\u2013180 m\/min on 10\u20131 000 mm\u00b2 conductors.<\/p>\n\n\n\n

Extruder and Line Configuration Data<\/h3>\n\n\n\n
Screw \u00d8<\/th>Typical L\/D<\/th>PVC output<\/th>Line speed class<\/th>Conductor range (insulation)<\/th>Finished OD range<\/th><\/tr><\/thead>
\u03a645\u201360 mm<\/td>25\u201326:1<\/td>50\u2013110 kg\/h<\/td>High-speed LV<\/td>0.5\u201310 mm\u00b2<\/td>1.9\u20138 mm<\/td><\/tr>
\u03a670\u201390 mm<\/td>25:1<\/td>130\u2013280 kg\/h<\/td>Building \/ small power<\/td>1.5\u201335 mm\u00b2<\/td>4\u201345 mm<\/td><\/tr>
\u03a6100\u2013120 mm<\/td>25:1<\/td>330\u2013420 kg\/h<\/td>Power \/ control<\/td>8\u201370 mm\u00b2<\/td>8\u201380 mm<\/td><\/tr>
\u03a6150\u2013180 mm<\/td>25:1<\/td>780+ kg\/h<\/td>Large power<\/td>50\u20131 000 mm\u00b2<\/td>up to \u03a6140 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Barrel temperature profiles (indicative): PVC 160\u2013190 \u00b0C; PE 180\u2013210 \u00b0C; XLPE insulation 200\u2013240 \u00b0C (avoid scorch); LSZH requires precise moisture control and often grooved-feed barrels.<\/p>\n\n\n\n

Single-Layer vs Tandem vs Co-Extrusion \u2014 Selection Logic<\/h3>\n\n\n\n
Line type<\/th>Layers<\/th>Typical speed<\/th>Best use<\/th>Control demand<\/th><\/tr><\/thead>
Single-screw<\/td>1<\/td>80\u20131 200 m\/min<\/td>PVC\/PE building wire, general insulation<\/td>Orta<\/td><\/tr>
Tandem (sequential heads)<\/td>2<\/td>30\u2013200 m\/min<\/td>Insulation + jacket, THHN nylon jacket<\/td>Medium\u2013high<\/td><\/tr>
Co-extrusion (one head)<\/td>2\u20133 simultaneous<\/td>20\u2013150 m\/min (MV lower)<\/td>XLPE conductor screen + insulation + insulation screen<\/td>Y\u00fcksek<\/td><\/tr>
Fine-wire high-speed<\/td>1 (+ stripe)<\/td>500\u20132 000 m\/min<\/td>Automotive, telecom, magnet-adjacent<\/td>Very high (temp \u00b11 \u00b0C)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

MV\/HV XLPE with triple-layer dry-cure CCV\/VCV is a different class (line speeds typically 25\u201350 m\/min, towers 16\u201323 m) and is not the same machine as a high-speed LV insulation line.<\/p>\n\n\n\n

Quality Metrics, Standards and Failure Modes<\/h3>\n\n\n\n

Concentricity is calculated as (min wall \u00f7 max wall) \u00d7 100. LV building-wire practice targets \u226585 %; MV XLPE commonly requires \u226580\u201390 %. IEC 62067 discusses eccentricity limits around 10 % for certain HV constructions because thin-side field enhancement accelerates ageing.<\/p>\n\n\n\n

Primary defects and prevention:<\/p>\n\n\n\n

    \n
  • Eccentricity \/ thin wall<\/strong> \u2014 misaligned tip\/die, unstable melt, inadequate closed-loop control. Use self-centering or servo-adjustable crossheads plus 8-point laser eccentricity gauges.<\/li>\n\n\n\n
  • Pinholes \/ spark failures<\/strong> \u2014 moisture in compound, gels, die lines, inadequate cooling. Pre-dry LSZH\/XLPE; polish dies; size trough length to speed and wall.<\/li>\n\n\n\n
  • Melt fracture \/ shark-skin<\/strong> \u2014 excessive shear at the die. Raise die temperature or reduce speed; use processing aids.<\/li>\n\n\n\n
  • Scorch in XLPE<\/strong> \u2014 barrel too hot or residence time too long. Use 30:1 L\/D screws and melt-temperature monitoring before the head.<\/li>\n\n\n\n
  • Diameter drift<\/strong> \u2014 open-loop screw\/haul-off. Laser gauge feedback to PLC (Siemens \/ Mitsubishi class) keeps wall within \u00b15 %.<\/li>\n<\/ul>\n\n\n\n

    Applicable product standards include IEC 60502-1 (1\u20133 kV extruded power cables), IEC 60227 \/ GB building-wire series, and UL 83 for THHN\/THWN constructions common in North America and the Middle East.<\/p>\n\n\n\n

    Uygulamalar<\/h3>\n\n\n\n
      \n
    • Building wire and housing wire (PVC, nylon-jacketed THHN)<\/li>\n\n\n\n
    • Low-voltage power and control cables<\/li>\n\n\n\n
    • Automotive and appliance harness wire<\/li>\n\n\n\n
    • LSZH \/ HFFR public-building and transit cables<\/li>\n\n\n\n
    • Data and instrumentation cores (high-speed fine-wire variants)<\/li>\n<\/ul>\n\n\n\n

      Insulation quality at this stage determines subsequent spark-test yield, high-voltage withstand, fire-performance certification and drawing\/stranding behaviour of multi-core cables.<\/p>\n\n\n\n

      Engineering Notes for Plant Layout and Long-Term Operation<\/h3>\n\n\n\n

      Closed-loop diameter and eccentricity control, gravimetric dosing and dual auto-change take-up are the items that most directly cut scrap on high-speed lines. Cooling-trough length and water temperature stability become the bottleneck above ~400 m\/min. Specify conductor range, compounds (PVC \/ XLPE \/ LSZH), target speeds, bobbin sizes and whether tandem nylon or stripe is required before layout engineering. Utility list typically covers 380\u2013415 V 3-phase, process water, compressed air and compound drying capacity.<\/p>\n\n\n\n

      <\/p>","protected":false},"excerpt":{"rendered":"

      A High Speed Insulation Extrusion Production Line is a continuous cable manufacturing system that applies PVC, PE, XLPE, LSZH\/HFFR or<\/p>","protected":false},"author":1,"featured_media":31077,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[565],"tags":[],"class_list":["post-31074","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-en"],"_links":{"self":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/posts\/31074","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/comments?post=31074"}],"version-history":[{"count":1,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/posts\/31074\/revisions"}],"predecessor-version":[{"id":31078,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/posts\/31074\/revisions\/31078"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/media\/31077"}],"wp:attachment":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/media?parent=31074"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/categories?post=31074"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/tags?post=31074"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}