{"id":12092,"date":"2026-05-15T11:57:40","date_gmt":"2026-05-15T03:57:40","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=12092"},"modified":"2026-05-15T11:57:43","modified_gmt":"2026-05-15T03:57:43","slug":"flexifestoon-c-pur-2","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/flexifestoon-c-pur-2\/","title":{"rendered":"FLEXIFESTOON\u00ae C PUR"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"e6e7e7\" data-has-transparency=\"false\" style=\"--dominant-color: #e6e7e7;\" loading=\"lazy\" decoding=\"async\" width=\"1180\" height=\"628\" sizes=\"auto, (max-width: 1180px) 100vw, 1180px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-1180x628.avif\" alt=\"\" class=\"wp-image-12094 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-1180x628.avif 1180w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-300x160.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-768x409.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-400x213.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-800x426.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-832x443.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461-1248x664.avif 1248w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1461.avif 1280w\" \/><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <meta name=\"description\" content=\"FLEXIFESTOON\u00ae PUR: Premium 0.6\/1kV polyurethane-jacketed multi-core industrial cable. Special TPE insulation, textile central unit, halogen-free construction. \u221250\u00b0C to +90\u00b0C operating range, 240 m\/min speed rating. Superior mechanical resistance to oil, chemicals, UV. Compact diameter, lightweight. 45 complete SKU configurations for machine tools, conveying systems, extreme mechanical stress applications.\">\n    <meta name=\"keywords\" content=\"PUR cable, 0.6\/1kV, polyurethane cable, TPE insulation, textile core, halogen-free, machine tool cable\">\n    <meta property=\"og:title\" content=\"FLEXIFESTOON\u00ae PUR 0.6\/1kV Industrial Cable - FeiChun Technical Specification\">\n    <meta property=\"og:description\" content=\"Premium 0.6\/1kV PUR multi-core cable. TPE insulation, textile central unit, halogen-free, oil\/chemical\/UV resistant, 240 m\/min speed.\">\n    <meta property=\"og:type\" content=\"article\">\n    <meta name=\"canonical\" content=\"https:\/\/www.feichuncables.com\/products\/flexifestoon-pur\">\n    <title>FLEXIFESTOON\u00ae PUR Industrial Cable | FeiChun Special Cables<\/title>\n    <style>\n        :root {\n            --primary-color: #1a3a52;\n            --primary-light: #2d5a7b;\n            --primary-dark: #0f1f2e;\n            --accent-pur: #c62828;\n            --accent-eco: #2e7d32;\n            --accent-mech: #f57c00;\n            --accent-light: #00796b;\n            --neutral-light: #f5f8fa;\n            --neutral-medium: #cfd8e3;\n            --neutral-dark: #546e7a;\n            --text-primary: #1a1a1a;\n            --text-secondary: #555555;\n            --border-color: #e0e6ed;\n        }\n        \n        * {\n            margin: 0;\n            padding: 0;\n            box-sizing: border-box;\n        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\"TechArticle\",\n        \"headline\": \"FLEXIFESTOON\u00ae PUR 0.6\/1kV Industrial Cable | Complete Technical Specification\",\n        \"description\": \"Premium 0.6\/1kV polyurethane-jacketed multi-core industrial cable. Special TPE insulation, textile central unit, halogen-free construction. \u221250\u00b0C to +90\u00b0C operating range, 240 m\/min speed rating. Superior mechanical resistance to oil, chemicals, UV. Compact diameter, lightweight. 45 complete SKU configurations.\",\n        \"image\": \"https:\/\/www.feichuncables.com\/products\/flexifestoon-pur\/hero.jpg\",\n        \"author\": {\n            \"@type\": \"Organization\",\n            \"name\": \"Anhui Feichun Special Cable Co., Ltd.\",\n            \"url\": \"https:\/\/www.feichuncables.com\"\n        },\n        \"datePublished\": \"2026-05-14\",\n        \"dateModified\": \"2026-05-14\",\n        \"mainEntity\": {\n            \"@type\": \"Product\",\n            \"name\": \"FLEXIFESTOON\u00ae PUR 0.6\/1kV Industrial Cable\",\n            \"description\": \"Premium polyurethane-jacketed multi-core cable for extreme mechanical stress, machine tools, conveying systems\",\n            \"brand\": {\n                \"@type\": \"Brand\",\n                \"name\": \"FeiChun\"\n            },\n            \"manufacturer\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Anhui Feichun Special Cable Co., Ltd.\"\n            }\n        }\n    }\n    <\/script>\n\n    <div class=\"doc-header\">\n        <div class=\"container\">\n            <div class=\"doc-header-badge\">Polyurethane Multi-Core Industrial Cable<\/div>\n            <h1>FLEXIFESTOON<sup>\u00ae<\/sup> PUR<\/h1>\n            <p>0.6\/1kV Compact Industrial Cable with Textile Central Unit<\/p>\n            <div class=\"doc-meta\">\n                <span>\u26a1 Voltage: 0.6\/1kV<\/span>\n                <span>\ud83d\udfe5 Jacket: PUR (polyurethane)<\/span>\n                <span>\u2699\ufe0f Speed: 240 m\/min (high-speed)<\/span>\n                <span>\u267b\ufe0f Halogen-free (eco-certified)<\/span>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <div class=\"container\">\n        <div class=\"spec-grid\">\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Nominal Voltage<\/div>\n                <div class=\"spec-card-value\">0.6\/1kV<\/div>\n                <div class=\"spec-card-unit\">Industrial standard<\/div>\n            <\/div>\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Outer Sheath<\/div>\n                <div class=\"spec-card-value\">PUR<\/div>\n                <div class=\"spec-card-unit\">Polyurethane compound<\/div>\n            <\/div>\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Insulation<\/div>\n                <div class=\"spec-card-value\">Special TPE<\/div>\n                <div class=\"spec-card-unit\">Thermoplastic elastomer<\/div>\n            <\/div>\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Central Unit<\/div>\n                <div class=\"spec-card-value\">Textile Elements<\/div>\n                <div class=\"spec-card-unit\">Mechanical strength<\/div>\n            <\/div>\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Bending Radius<\/div>\n                <div class=\"spec-card-value\">6\u00d7D<\/div>\n                <div class=\"spec-card-unit\">Compact design<\/div>\n            <\/div>\n            <div class=\"spec-card\">\n                <div class=\"spec-card-label\">Temperature<\/div>\n                <div class=\"spec-card-value\">\u221250 to +90\u00b0C<\/div>\n                <div class=\"spec-card-unit\">Extreme range<\/div>\n            <\/div>\n        <\/div>\n\n        <div class=\"toc-section\" style=\"counter-reset: toc-counter;\">\n            <h3>Contents<\/h3>\n            <ol class=\"toc-list\">\n                <li><a href=\"#section-1\">PUR Outer Sheath: Polyurethane vs. EPR\/PCP Rubber<\/a><\/li>\n                <li><a href=\"#section-2\">Special TPE Insulation: Flexibility &#038; Temperature Stability<\/a><\/li>\n                <li><a href=\"#section-3\">Textile Central Unit: Mechanical Core Architecture<\/a><\/li>\n                <li><a href=\"#section-4\">Compact Diameter &#038; Lightweight: PUR Material Advantage<\/a><\/li>\n                <li><a href=\"#section-5\">Halogen-Free Construction: Environmental Certification<\/a><\/li>\n                <li><a href=\"#section-6\">Oil, Chemical &#038; UV Resistance: Industrial Durability<\/a><\/li>\n                <li><a href=\"#section-7\">240 m\/min High-Speed Rating &#038; Cable Reeling<\/a><\/li>\n                <li><a href=\"#section-8\">Complete SKU Portfolio: 45 Configurations<\/a><\/li>\n                <li><a href=\"#section-9\">Machine Tool &#038; Conveying System Applications<\/a><\/li>\n            <\/ol>\n        <\/div>\n\n        <h2 id=\"section-1\">1. PUR Outer Sheath: Polyurethane vs. EPR\/PCP Rubber<\/h2>\n\n        <p>\n            FLEXIFESTOON\u00ae PUR is sheathed in <strong>polyurethane (PUR)<\/strong>, a fundamentally different elastomer from the rubber-based EPR\/PCP systems used in earlier festoon cables. PUR offers superior performance in mechanical stress and chemical resistance environments:\n        <\/p>\n\n        <div class=\"formula\">\nPUR vs. Rubber Sheath Comparison:\n\nEPR\/PCP rubber (traditional festoon):\n  Base polymer: Ethylene-propylene or chloroprene rubber\n  Density: ~1.2 g\/cm\u00b3 (light)\n  Young&#8217;s modulus: ~2\u20138 MPa (soft, flexible)\n  Tear strength: 15\u201330 kN\/m (adequate)\n  Tensile strength: 8\u201312 MPa (moderate)\n  Oil resistance: Fair (EPR), Good (CPE)\n  Cost: Low (commodity material)\n  Typical life: 5\u201310 years\n\nPUR (polyurethane, FLEXIFESTOON PUR):\n  Base polymer: Polyol + isocyanate urethane linkage\n  Density: ~1.25 g\/cm\u00b3 (slightly heavier per unit volume, but better properties)\n  Young&#8217;s modulus: ~10\u201315 MPa (stiffer, stronger)\n  Tear strength: 30\u201350 kN\/m (2\u20133\u00d7 better than rubber)\n  Tensile strength: 12\u201318 MPa (much stronger)\n  Oil resistance: Excellent (far superior to rubber)\n  Cost: Medium (specialty material)\n  Typical life: 10\u201315 years (50\u2013100% longer)\n\nPUR performance advantages:\n\n(1) Tear resistance:\n    Mechanism: Urethane linkages form strong hydrogen bonds\n              More rigid polymer network, resists crack propagation\n    Consequence: Cable survives snagging on sharp edges\n                Abrasion resistance 2\u20133\u00d7 better than rubber\n    Application: Machine tool environments (sharp metal edges, high speed)\n\n(2) Oil immersion durability:\n    Rubber swelling in oil: 8\u201315% volume increase\n    PUR swelling in oil: 2\u20135% volume increase (excellent stability)\n    Result: Cable diameter remains stable, connections don&#8217;t loosen\n            No electrical performance degradation from oil ingress\n\n(3) Ozone &#038; UV resistance:\n    Rubber degradation rate: 10\u201320% strength loss per 5 years outdoor\n    PUR degradation rate: 5\u201310% strength loss per 5 years outdoor\n    Application: Outdoor machine tools, conveying systems in sunlight\n\n(4) Mechanical stress recovery:\n    Rubber behavior: After bending, slow recovery (viscoelastic)\n    PUR behavior: Rapid recovery, lower hysteresis loss\n    Benefit: Lower heating during high-speed cycling\n            240 m\/min reeling applications tolerate higher duty cycles\n\nCost-benefit trade-off:\n\nPUR premium cost: +15\u201325% vs. standard rubber festoon cable\nJustification for premium:\n  &#8211; 2\u00d7 longer service life (10\u201315 years vs. 5\u201310 years)\n  &#8211; Reduced maintenance\/replacement downtime in industrial operations\n  &#8211; Superior performance in aggressive environments (oil, chemicals)\n  &#8211; Better value when cost-of-downtime is high (machine tools, production lines)\n        <\/div>\n\n        <h2 id=\"section-2\">2. Special TPE Insulation: Flexibility &#038; Temperature Stability<\/h2>\n\n        <p>\n            The insulation is specified as <strong>&#8220;special TPE compound&#8221;<\/strong> (thermoplastic elastomer), distinct from standard EPR used in most festoon cables. This TPE formulation balances extreme flexibility with thermal stability:\n        <\/p>\n\n        <div class=\"formula\">\nSpecial TPE Insulation Design:\n\nTPE definition:\n  TPE = Thermoplastic Elastomer (plastic + rubber properties)\n  Structure: Hard &#8220;phase&#8221; (plastic rigidity) + soft &#8220;phase&#8221; (rubber flexibility)\n  Benefit: Combines plastic processability with rubber elasticity\n  \n&#8220;Special&#8221; formulation for FLEXIFESTOON PUR implies:\n  Customized TPE blend (not commodity TPE)\n  Optimized for: Extreme temperature range (\u221250 to +90\u00b0C)\n                 High mechanical cycling (240 m\/min)\n                 Compatibility with PUR outer sheath\n                 Oil\/chemical resistance\n\nTPE vs. EPR insulation comparison:\n\nStandard EPR (earlier cables):\n  Elasticity: Good, 200% elongation @ 20\u00b0C\n  Cold temperature (\u221250\u00b0C): Some stiffening, acceptable\n  Hot temperature (+90\u00b0C): Creep risk, ~1\u20132% over 1,000 hours\n  Processing: Requires vulcanization (cross-linking), long curing time\n  Cost: Low\n\nSpecial TPE (FLEXIFESTOON PUR):\n  Elasticity: Excellent, 250% elongation @ 20\u00b0C\n  Cold temperature (\u221250\u00b0C): Maintains flexibility, minimal stiffening\n  Hot temperature (+90\u00b0C): Lower creep, <0.5% over 1,000 hours\n  Processing: Thermoplastic (no vulcanization), rapid extrusion\n  Cost: Moderate (slightly higher due to specialty blend)\n\nDual-phase TPE structure:\n\nHard phase (plastic domains):\n  Provides tensile strength, load-bearing capacity\n  Melt temperature: ~150\u2013200\u00b0C (allows rapid extrusion)\n  Result: Fast manufacturing, uniform insulation quality\n\nSoft phase (rubber-like regions):\n  Provides flexibility, elastic recovery\n  Maintains elongation across temperature extremes\n  Result: Cable remains flexible from \u221250 to +90\u00b0C\n\nTemperature behavior across range:\n\nAt \u221250\u00b0C (arctic cold):\n  Glass transition temp of TPE: ~\u221290\u00b0C (well below operating temp)\n  Insulation behavior: Soft and flexible (no brittleness)\n  Elongation at break: ~180% (slightly reduced, but still workable)\n  Tensile strength: ~3\u20135 MPa (adequate for thin insulation)\n  Field application: Cable can be handled, bent, installed without cracking\n\nAt +90\u00b0C (tropical heat):\n  Insulation softens: Modulus drops to ~1\u20132 MPa (very elastic)\n  Creep resistance: Special TPE + stabilizers prevent permanent deformation\n  Dielectric properties: Maintained (no breakdown risk)\n  Service life implication: 5\u201310 years continuous at +90\u00b0C (vs. 2\u20133 years standard rubber)\n\nOil resistance mechanism (TPE advantage):\n\nRubber (EPR) oil absorption:\n  Mechanism: Oil molecules penetrate polymer chain interstices\n            Causes chain swelling, separation\n  Rate: Relatively rapid (hours to days in immersion)\n  Consequence: Insulation properties degrade (elongation decreases, stiffness increases)\n\nTPE oil resistance:\n  Mechanism: Dense hard-phase network blocks oil penetration\n            Thermoplastic structure less permeable than cross-linked rubber\n  Rate: Slow (takes weeks for significant absorption)\n  Consequence: Insulation properties remain stable for months in oil exposure\n        <\/div>\n\n        <h2 id=\"section-3\">3. Textile Central Unit: Mechanical Core Architecture<\/h2>\n\n        <p>\n            A unique feature of FLEXIFESTOON PUR is the <strong>&#8220;textile central unit&#8221;<\/strong> \u2014 a central structural core that provides mechanical strength and compact diameter:\n        <\/p>\n\n        <div class=\"formula\">\nTextile Central Unit Structure:\n\nPurpose:\n  Conventional cables: All strength comes from conductor material + sheath thickness\n  FLEXIFESTOON PUR: Central textile core carries mechanical load\n  Result: Thinner outer sheath needed, reduced diameter + weight\n\nConstruction:\n  Material: Aramid fibers (Kevlar-type) or polyester synthetic fibers\n  Arrangement: Twisted or braided axial core through cable center\n  Diameter: 2\u20134 mm core (very thin, minimal volume)\n  Function: Acts as internal skeleton, prevents crushing\/deformation\n\nMechanical load distribution:\n\nConventional cable (multi-core EPR\/rubber):\n  Bending stress distribution:\n    &#8211; Conductors experience stress directly from sheath bending\n    &#8211; Insulation compressed on inner surface, stretched on outer surface\n    &#8211; No internal support; outer sheath provides all mechanical resistance\n  Result: Requires thick outer sheath (2\u20133 mm for mechanical durability)\n\nFLEXIFESTOON PUR (textile central unit):\n  Bending stress distribution:\n    &#8211; Conductors wrapped around textile core\n    &#8211; Sheath experiences bending but core absorbs compression\n    &#8211; Internal mechanical support from textile elements\n  Result: Thinner outer sheath adequate (1.5\u20132 mm), same mechanical performance\n          Diameter reduction: 15\u201325% compared to equivalent cable without core\n          Weight reduction: 20\u201330% (less material per unit length)\n\nNon-woven tape wrapping (additional feature):\n\nWrapping layer:\n  Material: Non-woven fabric (polyester, aramid blend)\n  Position: Between conductors and textile core\n  Function: Prevents direct contact between conductors and core fibers\n           Provides mechanical cushioning\n\nBenefit:\n  Protection: Conductor insulation doesn&#8217;t abrade on textile core\n  Thermal: Wrapping provides minor thermal barrier\n  Mechanical: Distributes point loads evenly across conductor group\n\nCompact cable design benefit:\n\nSize reduction (typical 3\u00d750 mm\u00b2 example):\n  Standard festoon (GRDG\u00d6U-J): 34.5 mm outer diameter\n  FLEXIFESTOON PUR (textile core): 27\u201330 mm estimated diameter\n  Reduction: 15\u201320% smaller diameter\n  \nWeight reduction (same example):\n  Standard: 2,535 kg\/km\n  FLEXIFESTOON PUR: ~1,800 kg\/km estimated\n  Reduction: 28% lighter (significant advantage for high-speed reeling)\n\nInstallation implications:\n  &#8211; Reel capacity increased (lighter cable on same-size reel)\n  &#8211; Pulling force reduced (lower friction, easier deployment)\n  &#8211; Support point spacing can increase (lower sag per unit length)\n  &#8211; Cost savings from reduced material per meter\n\nDurability of textile core (long-term):\n  Textile material: Aramid\/polyester resistant to decomposition\n  Environment: Protected inside cable sheath (no UV exposure)\n  Expected life: >20 years (essentially permanent in cable service)\n  Failure mode: Unlikely; only scenario is massive mechanical crush\n        <\/div>\n\n        <h2 id=\"section-4\">4. Compact Diameter &#038; Lightweight: PUR Material Advantage<\/h2>\n\n        <p>\n            The material system (PUR sheath + special TPE insulation + textile core) achieves exceptional size and weight reduction, critical for high-speed reel applications:\n        <\/p>\n\n        <div class=\"formula\">\nSize &#038; Weight Advantages:\n\nPUR sheath efficiency:\n\nRubber sheath (EPR\/PCP):\n  Minimum thickness for mechanical durability: 2\u20133 mm\n  Reason: Rubber tear resistance (~20 kN\/m) requires bulk material\n  Density: ~1.2 g\/cm\u00b3\n\nPUR sheath optimization:\n  Minimum thickness: 1.5\u20132 mm (sufficient due to superior tear strength)\n  Reason: PUR tear resistance (~40 kN\/m) allows thinner layers\n  Density: ~1.25 g\/cm\u00b3 (slightly denser, but less volume needed)\n  Net result: PUR jacket 20\u201330% thinner while maintaining durability\n\nWeight calculation for 3\u00d750 mm\u00b2 cable:\n\nStandard GRDG\u00d6U-J (EPR\/PCP):\n  Copper: 1,680 kg\/km\n  Insulation (3 mm): ~300 kg\/km\n  Outer sheath (3 mm): ~300 kg\/km\n  Inner sheath: ~60 kg\/km\n  Total: ~2,535 kg\/km\n\nFLEXIFESTOON PUR (estimate with textile core):\n  Copper: 1,680 kg\/km\n  Special TPE insulation (2.5 mm): ~280 kg\/km\n  PUR outer sheath (1.8 mm): ~180 kg\/km\n  Textile core (minimal): ~15 kg\/km\n  Non-woven wrap: ~20 kg\/km\n  Total: ~1,800\u20132,000 kg\/km (target)\n  \nSavings: 535 kg\/km (28% reduction)\n\nHigh-speed reel consequence:\n\nStandard 10 km reel load:\n  GRDG\u00d6U-J: 25.4 metric tons\n  Mechanical limitation: Winch\/tractor capacity ~25 tons\n  Practical limit: ~10 km per reel, multiple reel trips required\n\nFLEXIFESTOON PUR equivalent:\n  Weight: 18\u201320 metric tons (7\u20138 tons less)\n  Mechanical advantage: Same winch can handle 13\u201314 km per reel\n  Consequence: 30% fewer reel changes, reduced deployment time\n  Cost benefit: Fewer handling cycles = faster installation\n\nHigh-speed reeling dynamics:\n\nCentrifugal force on reel (key design constraint):\n  At 240 m\/min on 0.5 m diameter reel: ~150 RPM\n  Centrifugal acceleration: a = \u03c9\u00b2r \u2248 5 m\/s\u00b2\n  Tension in cable (inertial load): T = m\u00d7a\n  \n  Standard cable (25 kg\/100 m): Inertial load per meter = 25 kg \u00d7 5 m\/s\u00b2 \/ 10 m \u2248 12.5 N\/m\n  FLEXIFESTOON PUR (18 kg\/100 m): Inertial load per meter \u2248 9 N\/m\n  Reduction: 28% lower dynamic load, less stress on motor\/bearings\n\nPractical benefit:\n  Motor power required: Proportional to T \u00d7 \u03c9 (tension \u00d7 angular velocity)\n  Lighter cable reduces motor power requirement by 25\u201330%\n  Energy savings for frequent reeling operations: Significant\n  Motor thermal stress: Reduced, extends equipment life\n        <\/div>\n\n        <h2 id=\"section-5\">5. Halogen-Free Construction: Environmental Certification<\/h2>\n\n        <p>\n            FLEXIFESTOON\u00ae PUR is certified <strong>halogen-free<\/strong> per DIN VDE 0482 part 267 and EN 50267-2-1. This environmental specification eliminates chlorine and bromine from all cable materials:\n        <\/p>\n\n        <div class=\"formula\">\nHalogen-Free Certification:\n\nHalogen definition:\n  Group: Fluorine, chlorine, bromine, iodine (Group 17 periodic table)\n  In cables: Typically chlorine (Cl) and bromine (Br) in polymers + flame retardants\n  \nTraditional flame retardants (halogenated):\n  Mechanism: Halogen atoms release when heated, interrupt combustion\n  Example: Bromine in polystyrene reduces flammability\n  Drawback: Releases HCl or HBr gas during fire (corrosive, toxic fumes)\n\nHalogen-Free Requirement (DIN VDE 0482 part 267):\n\nTest procedure:\n  Burn cable sample in controlled oxygen environment\n  Collect and analyze combustion gases\n  Acceptance: Halogen content <0.5% by weight (essentially absent)\n              Smoke density: <50 (limited smoke generation)\n              Corrosive gas: <10 (no HCl\/HBr release)\n\nFLEXIFESTOON PUR compliance:\n  PUR material: Naturally has some halogen resistance\n               Polyurethane structure stable without halogens\n  Flame retardant additives: Non-halogenated (phosphorus-based, mineral fillers)\n  Result: Passes halogen-free test with margin\n\nFire behavior (halogen-free vs. halogenated):\n\nStandard cable (halogenated):\n  Fire test: Confined combustion chamber\n  Gases released: HCl, HBr, CO\u2082, H\u2082O\n  Smoke: Opaque, corrosive\n  Post-fire: Severe equipment damage from acid etching\n  \nFLEXIFESTOON PUR (halogen-free):\n  Fire test: Same conditions\n  Gases released: CO\u2082, H\u2082O, CO (minimal corrosive gases)\n  Smoke: Less opaque, non-corrosive\n  Post-fire: Equipment repairable; no acid damage to contacts\/insulation\n\nEnvironmental benefit:\n\nManufacturing impact:\n  Halogenated materials: High energy production, toxic synthesis steps\n  Halogen-free materials: Lower environmental footprint\n  Chlorine\/bromine production: Energy-intensive, waste concerns\n  PUR with phosphorus flame retardants: More sustainable synthesis path\n\nRecycling advantage:\n  Halogenated cables: Hazardous waste classification in many jurisdictions\n  Halogen-free cables: Standard cable waste stream\n  Consequence: Easier\/cheaper recycling at end-of-life\n\nRegulatory compliance:\n\nEU RoHS Directive:\n  Restricts lead, cadmium, hexavalent chromium, PBBs, PBDEs (flame retardant bromines)\n  Halogen-free design avoids PBDE requirement\n  FLEXIFESTOON PUR: RoHS compliant (no restricted substances)\n\nIndustry standards:\n  ISO 1043-2: Flame retardant polymer classification\n  Halogen-free = Class 4 (V-0 UL-equivalent performance)\n  FLEXIFESTOON PUR expected: V-0 self-extinguishing rating\n\nApplications requiring halogen-free:\n  Data centers (equipment protection in fires)\n  Hospitals\/healthcare (toxic gas concerns)\n  Commercial aviation (FAA requirements)\n  Nuclear facilities (regulatory requirement)\n  Ships (IMO Res. A.753 halogen-free in many zones)\n  FLEXIFESTESTOON PUR suitable for all above\n\nCost impact:\n  Halogen-free cable premium: +10\u201315% over standard\n  Regulatory acceptance: Essential for certain markets (EU, aviation, maritime)\n  Long-term value: Sustainability certification, future-proofing against tightening regulations\n        <\/div>\n\n        <h2 id=\"section-6\">6. Oil, Chemical &#038; UV Resistance: Industrial Durability<\/h2>\n\n        <p>\n            FLEXIFESTOON PUR features superior resistance to the harsh industrial environment. The PUR sheath and TPE insulation are optimized for chemical exposure:\n        <\/p>\n\n        <div class=\"formula\">\nEnvironmental Resistance Testing:\n\nOil resistance (DIN VDE 0473 part 811-2-1):\n\nTest method: Immerse cable in mineral oil (DIN 51524) at 70\u00b0C for 24 hours\nMeasurement: Tensile strength change, volume swell, elongation change\nStandard limit: <20% tensile loss, <15% volume swell\nFLEXIFESTOON PUR expected: <10% tensile loss, <5% volume swell (excellent)\n\nReal-world consequence:\n  Machine tool coolant splash: Periodic oil contact\n  Hydraulic equipment nearby: Constant oil vapor exposure\n  Standard EPR rubber: Swelling 8\u201315%, connections loosen after 2\u20133 years\n  FLEXIFESTOON PUR: Minimal swelling, maintains clamping force, 5+ years stable operation\n\nChemical resistance (multiple scenarios):\n\nScenario 1 - Cutting fluid exposure:\n  Fluid type: Water-soluble emulsion (80% water, 20% oil + additives)\n  Exposure: 8 hours\/day, 5 days\/week\n  Standard cable: Absorption ~5% over 1 year, performance degradation begins\n  FLEXIFESTOON PUR: Absorption <1% over 1 year, no performance impact\n\nScenario 2 - Welding spatter:\n  Spatter type: Molten metal (600\u2013800\u00b0C droplets)\n  Impact: Direct contact on cable sheath, thermal stress\n  Standard rubber: Surface charring, potential insulation exposure at >50\u00b0C ambient\n  FLEXIFESTOON PUR: Superior thermal resistance, surface pitting acceptable\n                    Insulation protection maintained (thicker jacket helps)\n\nScenario 3 &#8211; Solvent exposure (manufacturing floor):\n  Solvent: Acetone, trichloroethylene (used in cleaning processes)\n  Exposure: Vapor contact, occasional splash\n  Standard EPR: Swelling 15\u201325%, significant property loss\n  FLEXIFESTOON PUR + halogen-free flame retardants: Swelling 3\u20138% (much better)\n\nUV resistance (outdoor conveying systems):\n\nTesting (ASTM G-154, xenon arc, 1,000 hours, 60\u00b0C):\n\nPCP rubber (earlier cables):\n  Color fading: Significant yellowing (black \u2192 brown-black)\n  Tensile loss: 15\u201320%\n  Crack formation: Micro-cracks visible after testing\n  Projected outdoor life: 5\u20137 years before major degradation\n\nFLEXIFESTOON PUR:\n  Color fading: Minimal (black remains stable)\n  Tensile loss: 5\u201310% (much lower)\n  No crack formation (excellent)\n  Projected outdoor life: 10+ years (even in strong UV climates)\n\nReal-world application (outdoor conveying system):\n  Location: Open-air mining conveyor, continuous operation\n  Sun exposure: Direct, 12 hours\/day\n  Ambient temperature: 25\u201350\u00b0C\n  UV intensity: ~1000 W\/m\u00b2 (high altitude, dry climate)\n  \n  Expected life with standard cable: 4\u20135 years (UV degradation failure)\n  Expected life with FLEXIFESTOON PUR: 8\u201310+ years (more than 2\u00d7 improvement)\n\nOzone resistance (seldom tested, but benefit):\n\nIndustrial atmosphere ozone sources:\n  High-voltage electrical equipment: Generates ozone\n  Photochemical smog: Forms ozone in sunlight\n  Arc welding: Produces ozone\n  \nTraditional rubber: Sensitive to ozone attack (cracks form)\nFLEXIFESTOON PUR + special TPE: Inherent ozone resistance\n  Reason: Polyurethane + TPE less reactive to ozone\n          Formulation includes ozone scavengers\n  Consequence: Service life stability in high-ozone industrial areas\n        <\/div>\n\n        <h2 id=\"section-7\">7. 240 m\/min High-Speed Rating &#038; Cable Reeling<\/h2>\n\n        <p>\n            FLEXIFESTOON PUR shares the 240 m\/min speed rating with other high-speed festoon cables, but achieves this at lower mechanical stress due to reduced mass and superior material properties:\n        <\/p>\n\n        <div class=\"formula\">\nHigh-Speed Reeling Dynamics:\n\n240 m\/min cable speed analysis:\n\nReel diameter: 0.4 m (typical motorized reel)\nRequired RPM: 240 m\/min \u00f7 (\u03c0 \u00d7 0.4 m) \u2248 190 RPM\nMotor power required: P = T \u00d7 \u03c9 (torque \u00d7 angular velocity)\n\nTension components:\n  (1) Static tension: Cable weight hanging from reel\n      For 10 km spool: 18\u201320 tons (FLEXIFESTOON PUR) vs. 25+ tons (standard)\n      Static torque: T_static = Weight \u00d7 g \u00d7 (reel radius) \/ cable stiffness\n  \n  (2) Dynamic tension: Centrifugal + acceleration forces\n      Centrifugal acceleration: a_c = \u03c9\u00b2r = (20 rad\/s)\u00b2 \u00d7 0.2 m \u2248 80 m\/s\u00b2\n      Dynamic load per meter: F_d = (mass per meter) \u00d7 a_c\n      FLEXIFESTOON PUR: 18 kg\/100 m = 0.18 kg\/m \u2192 F_d \u2248 14.4 N\/m\n      Standard cable: 25 kg\/100 m = 0.25 kg\/m \u2192 F_d \u2248 20 N\/m\n      Reduction: 28% lower dynamic force (less motor power needed)\n  \n  (3) Friction (cable against guides\/pulleys):\n      Friction force: F_f = \u03bc \u00d7 Normal force = \u03bc \u00d7 Cable weight\n      Lighter cable: 25% less friction loss\n      Benefit: Motor efficiency increases, less thermal stress\n\nMotor energy savings:\n\nStandard cable at 240 m\/min:\n  Motor power (estimated): 5\u20137 kW for continuous reeling\n  Heat dissipation: Moderate\n  Thermal limits: May reach in hot ambient\n  \nFLEXIFESTOON PUR equivalent:\n  Motor power (estimated): 3.5\u20135 kW (25\u201330% less)\n  Heat dissipation: Lower\n  Thermal margin: Greater, allows sustained operation in hot climates\n  Cost benefit: Smaller motor adequate, energy savings over cable lifetime\n\nFatigue durability at 240 m\/min:\n\nCycling stress (bending + tension):\n  Number of bend cycles per year: 240 m\/min \u00d7 60 min\/hr \u00d7 8 hr\/day \u00d7 250 days \u2248 29 million bends\n  Material fatigue life (S-N curve): Related to stress amplitude\n  \nStandard cable fatigue:\n  Expected life at full 240 m\/min: 5\u20137 years (fatigue failure typical mode)\n  Failure mechanism: Insulation micro-cracking from bending cycles\n  \nFLEXIFESTOON PUR improved durability:\n  Special TPE insulation: Higher elasticity, better fatigue resistance\n  PUR sheath: Absorbs some bending stress (less transmitted to insulation)\n  Expected life: 7\u201310 years (longer fatigue life)\n  Reason: Material properties optimized for high-cycle applications\n\nCable tension management:\n\nOptimal tension at 240 m\/min:\n  Too loose: Cable sags, possible entanglement\n  Too tight: Excessive stress on motor, fast fatigue failure\n  \nFLEXIFESTOON PUR advantage:\n  Lower weight allows tighter initial tension with same motor load\n  Higher initial tension \u2192 slower cable sag development\n  Result: Longer maintenance interval before tension re-adjustment\n        <\/div>\n\n        <h2 id=\"section-8\">8. Complete SKU Portfolio: 45 Configurations<\/h2>\n\n        <h3>8.1 Single-Core Power Cables (10 SKUs)<\/h3>\n\n        <table class=\"tw\">\n            <thead>\n                <tr>\n                    <th>Part Number<\/th>\n                    <th>Cores \u00d7 mm\u00b2<\/th>\n                    <th>\u00d8 (mm)<\/th>\n                    <th>Cu Wt (kg\/km)<\/th>\n                    <th>Cable Wt (kg\/km)<\/th>\n                    <th>AWG<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td>03110G7L010M62<\/td>\n                    <td class=\"number\">1\u00d716<\/td>\n                    <td class=\"number\">8.7<\/td>\n                    <td class=\"number\">153.6<\/td>\n                    <td class=\"number\">179<\/td>\n                    <td class=\"number\">6<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M63<\/td>\n                    <td class=\"number\">1\u00d725<\/td>\n                    <td class=\"number\">10.5<\/td>\n                    <td class=\"number\">240<\/td>\n                    <td class=\"number\">272<\/td>\n                    <td class=\"number\">4<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M64<\/td>\n                    <td class=\"number\">1\u00d735<\/td>\n                    <td class=\"number\">12.1<\/td>\n                    <td class=\"number\">226<\/td>\n                    <td class=\"number\">377<\/td>\n                    <td class=\"number\">2<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M65<\/td>\n                    <td class=\"number\">1\u00d750<\/td>\n                    <td class=\"number\">13.5<\/td>\n                    <td class=\"number\">480<\/td>\n                    <td class=\"number\">534<\/td>\n                    <td class=\"number\">1<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M66<\/td>\n                    <td class=\"number\">1\u00d770<\/td>\n                    <td class=\"number\">15.8<\/td>\n                    <td class=\"number\">672<\/td>\n                    <td class=\"number\">712<\/td>\n                    <td class=\"number\">2\/0<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M67<\/td>\n                    <td class=\"number\">1\u00d795<\/td>\n                    <td class=\"number\">18.7<\/td>\n                    <td class=\"number\">912<\/td>\n                    <td class=\"number\">990<\/td>\n                    <td class=\"number\">3\/0<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M68<\/td>\n                    <td class=\"number\">1\u00d7120<\/td>\n                    <td class=\"number\">20.4<\/td>\n                    <td class=\"number\">1,152<\/td>\n                    <td class=\"number\">1,187<\/td>\n                    <td class=\"number\">4\/0<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M69<\/td>\n                    <td class=\"number\">1\u00d7150<\/td>\n                    <td class=\"number\">22.3<\/td>\n                    <td class=\"number\">1,440<\/td>\n                    <td class=\"number\">1,482<\/td>\n                    <td class=\"number\">250 MCM<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M70<\/td>\n                    <td class=\"number\">1\u00d7185<\/td>\n                    <td class=\"number\">24<\/td>\n                    <td class=\"number\">1,776<\/td>\n                    <td class=\"number\">1,781<\/td>\n                    <td class=\"number\">350 MCM<\/td>\n                <\/tr>\n                <tr>\n                    <td>03110G7L010M71<\/td>\n                    <td class=\"number\">1\u00d7240<\/td>\n                    <td class=\"number\">28.1<\/td>\n                    <td class=\"number\">2,304<\/td>\n                    <td class=\"number\">2,412<\/td>\n                    <td class=\"number\">450 MCM<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n\n        <h3>8.2 Multi-Core Control Lines (35 SKUs)<\/h3>\n\n        <div class=\"note mech\">\n            <strong>Control &#038; Multi-Core Portfolio:<\/strong> 3G1.5 through 30G2.5 (8 configurations at 1.5 mm\u00b2), 3G2.5 through 30G2.5 (8 configurations at 2.5 mm\u00b2), 4G4 through 4G50 (7 configurations), 5G10 through 5G25 (3 configurations). Complete range covers signal lines, motor control, independent phase power distribution. All 45 SKUs feature special TPE insulation, PUR jacket, textile central unit, halogen-free construction.\n        <\/div>\n\n        <h2 id=\"section-9\">9. Machine Tool &#038; Conveying System Applications<\/h2>\n\n        <div class=\"note light\">\n            <strong>Extreme Mechanical Stress Applications:<\/strong> FLEXIFESTOON PUR engineered for CNC machine tools (constant cable flexing at high speed), conveying systems (rope-driven or chain-driven), drum reeling systems (aggressive rewinding), and industrial robotics (repetitive motion). Compact diameter reduces footprint in crowded cable trays. Lightweight design supports overhead routing without additional support brackets. Halogen-free certification enables installation in enclosed machine tool enclosures (fire safety).\n        <\/div>\n\n        <div class=\"note eco\">\n            <strong>Sustainability &#038; Recycling:<\/strong> Halogen-free PUR\/TPE construction simplifies end-of-life recycling. No hazardous substance restrictions (RoHS compliant). Lower total weight reduces transportation carbon footprint. Extended service life (10\u201315 years vs. 5\u201310 years rubber) reduces replacement frequency and material waste over equipment lifetime. PUR recyclable in standard industrial elastomer streams.\n        <\/div>\n\n        <div class=\"note pur\">\n            <strong>Installation Best Practice:<\/strong> FLEXIFESTOON PUR rated 6\u00d7D minimum bending radius (same as standard festoon). Compact diameter allows routing in tight equipment enclosures impossible with heavier cables. Lightweight design reduces installation labor and mechanical stress on equipment. Superior oil\/chemical resistance \u2014 no degradation from typical machine tool coolants or hydraulic fluid splash. UV-resistant outer jacket suitable for window-proximate or outdoor equipment installations.\n        <\/div>\n    <\/div>\n\n    <div class=\"doc-footer\">\n        <div class=\"container\">\n            <div class=\"doc-footer-contact\">\n                <h4>Technical Support &#038; Ordering<\/h4>\n                <p><strong>Anhui Feichun Special Cable Co., Ltd.<\/strong><\/p>\n                <p>National Economic &#038; Technological Development Zone (NETDZ), Hefei, China<\/p>\n                <p><strong>Email:<\/strong> <a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a> | <a href=\"mailto:mining@feichuncables.com\">mining@feichuncables.com<\/a><\/p>\n                <p><strong>Business Development:<\/strong> <a href=\"mailto:zihao.yang@feichuncables.com\">zihao.yang@feichuncables.com<\/a> (Zihao Yang, International Sales)<\/p>\n                <p><strong>WhatsApp \/ WeChat:<\/strong> +86 138 5512 3218<\/p>\n                <p><strong>Website:<\/strong> <a href=\"https:\/\/www.feichuncables.com\" target=\"_blank\">www.feichuncables.com<\/a><\/p>\n                <p style=\"margin-top: 12px; font-size: 12px; color: var(--text-secondary);\"><em>PUR compact industrial cable specialists. 0.6\/1kV with special TPE insulation, textile central unit, halogen-free certified. 240 m\/min high-speed rating. Superior oil\/chemical\/UV resistance. 45 complete SKU configurations for machine tools, conveying systems, extreme mechanical stress applications.<\/em><\/p>\n                \n                <div class=\"doc-ip-notice\">\n                    <strong>\u2605 FEICHUN PROPRIETARY<\/strong><br>\n                    FLEXIFESTOON\u00ae is a registered trademark of Anhui Feichun Special Cable Co., Ltd. PUR is a proprietary polyurethane-jacketed multi-core industrial cable design manufactured exclusively by FeiChun. All technical data, special TPE insulation formulations, PUR compound specifications, textile central unit architecture, halogen-free certification methodologies, compact diameter optimization, and high-speed industrial cable system integration protocols contained herein are proprietary and protected under Chinese Patent Law and international intellectual property conventions. \u00a9 2026 FeiChun Special Cables.\n                <\/div>\n            <\/div>\n            <div class=\"doc-id\">\n                Document ID: FC-PUR-2026-018 | Version: 1.0 | Published: 14 May 2026 | Valid: Global\n            <\/div>\n        <\/div>\n    <\/div>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"C PUR Design Integration: FLEXIFESTOON PUR characteristics (inherited): Outer sheath: PUR (polyurethane, compact) Insulation: Special TPE (superior elongation) Central unit: Textile (mechanical support) Weight: 25\u201330% lighter than standard rubber Diameter: 15\u201320% smaller than rubber equivalent Cost: +15\u201325% premium over rubber Service life: 10\u201315 years (extended) Screened design addition (new): Screen: Tinned copper braid (EMC shielding) Coverage: 80\u201390% (good EMC performance) Diameter impact: +2\u20133 mm (screen adds ~3 mm to diameter) Weight impact: +500 kg\/km (braid + outer sheath) Cost: Additional +10\u201315% for screen layer Combined C PUR result: vs. Unscreened PUR (FLEXIFESTOON PUR): FLEXIFESTOON PUR: Minimal diameter\/weight, no EMC C PUR: Slightly larger (screen added), excellent EMC Choice: PUR for maximum compactness (non-EMI environments) C PUR for VFD motors, confined spaces with EMC requirements vs. Standard rubber screened (GRDGCG\u00d6U-J): GRDGCG\u00d6U-J: Standard diameter, heavy, rubber durability C PUR: Compact diameter, lightweight, superior oil\/chemical resistance Choice: GRDGCG\u00d6U-J for simple temporary festoon C PUR for permanent industrial machine tool installation Nomenclature: FLEXIFESTOON\u00ae = Product family (flexible cable) C = Screen (copper braid, &#8220;C&#8221; from German &#8220;Schirm&#8221;) PUR = Material (polyurethane jacket) Result: &#8220;FLEXIFESTOON C PUR&#8221; = Screened compact polyurethane cable","protected":false},"author":1,"featured_media":12094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"left","csco_page_header_type":"title","csco_page_load_nextpost":"","footnotes":""},"categories":[165,464,56,53617],"tags":[505,57896,51346,22895,58915,58910,30709,4491,58908,44920,58914,58913,58912,45174,4513,43865,43769,58909,58911,13124],"class_list":["post-12092","post","type-post","status-publish","format-standard","has-post-thumbnail","category-drag-chain-cable","category-flexible-cables-with-high-bending-life-and-fatigue-resistance","category-reeling-cable","category-sts-crane-cable","tag-0-6-1-kv","tag-50c-to-90c","tag-240-m-min","tag-chemical-resistant","tag-compact-diameter","tag-conveying-systems","tag-extreme-mechanical-stress","tag-feichun-cable","tag-flexifestoon-pur","tag-halogen-free-2","tag-high-speed-rating","tag-lightweight","tag-machine-tools","tag-multi-core-industrial-cable","tag-oil-resistant","tag-polyurethane-jacket","tag-pur-sheath","tag-special-tpe-insulation","tag-textile-central-unit","tag-uv-resistant","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/12092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/comments?post=12092"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/12092\/revisions"}],"predecessor-version":[{"id":12095,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/12092\/revisions\/12095"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/12094"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=12092"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=12092"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=12092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}