{"id":321,"date":"2018-04-19T02:38:38","date_gmt":"2018-04-19T02:38:38","guid":{"rendered":"http:\/\/www.fhopepack.com\/videos\/?p=321"},"modified":"2026-10-26T15:15:00","modified_gmt":"2026-10-26T15:15:00","slug":"coil-wrapping-machine-and-pipe-coil-packing-machine-for-steel","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/coil-wrapping-machine-and-pipe-coil-packing-machine-for-steel\/","title":{"rendered":"Coil Wrapping Machine and Pipe Coil Packing Machine for Steel: Engineering Selection &#038; Load Sizing Guide"},"content":{"rendered":"<blockquote>\n<p><strong>Executive Summary<\/strong>\nAn economic steel coil wrapping machine and a plastic\/hose pipe coil packing machine share a nearly identical orbital ring design, yet their internal drive trains and mechanical chassis are engineered for entirely different load regimes. While their structural envelopes overlap across coil outer diameter (OD: 500\u20131,200 mm) and width (100\u2013300 mm), dynamic load capacity dictates machine selection: the economic steel coil wrapper handles 20\u20131,000 kg, whereas the FPH-300N pipe coil wrapper is strictly limited to 10\u2013100 kg. Sizing a packaging station requires verifying core inner diameter (ID) fitment and calculating coil mass before requesting engineering proposals.<\/p>\n<\/blockquote>\n<iframe loading=\"lazy\" width=\"940\" height=\"535\" src=\"https:\/\/www.youtube.com\/embed\/kxV_8ouRWiQ\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<hr \/>\n<h2>Table of Contents<\/h2>\n<ul>\n<li><a href=\"#how-the-orbital-coil-wrapper-works\">How the Orbital Coil Wrapper Works<\/a><\/li>\n<li><a href=\"#steel-coil-wrapper-vs-pipe-coil-packing-machine\">Steel Coil Wrapper vs. Pipe Coil Packing Machine<\/a><\/li>\n<li><a href=\"#calculating-coil-weight-from-physical-dimensions\">Calculating Coil Weight from Physical Dimensions<\/a><\/li>\n<li><a href=\"#carrier-rollers-and-coil-surface-protection\">Carrier Rollers and Coil Surface Protection<\/a><\/li>\n<li><a href=\"#packaging-materials-and-core-roll-sizes\">Packaging Materials and Core Roll Sizes<\/a><\/li>\n<li><a href=\"#utility-connections-and-operational-safety\">Utility Connections and Operational Safety<\/a><\/li>\n<li><a href=\"#machine-selection-checklist\">Machine Selection Checklist<\/a><\/li>\n<li><a href=\"#engineering-faq\">Engineering FAQ<\/a><\/li>\n<li><a href=\"#next-step-sizing--inquiry-workflow\">Next Step: Sizing &amp; Inquiry Workflow<\/a><\/li>\n<li><a href=\"#related-engineering-documentation\">Related Engineering Documentation<\/a><\/li>\n<li><a href=\"#technical-references--norms\">Technical References &amp; Norms<\/a><\/li>\n<\/ul>\n<hr \/>\n<h2>How the Orbital Coil Wrapper Works<\/h2>\n<p>Both machines operate on the orbital through-the-eye wrapping principle: dynamic carrier rollers rotate the coil around its horizontal axis while an independently driven shuttle ring rotates wrapping media circumferentially through the eye of the coil. This synchronous compound motion applies an overlapping helical wrap across the entire toroidal surface.<\/p>\n<pre><code class=\"lang-text language-text text\">       [ Rotating Shuttle Ring ]\n           \/                \\\n          |    Wrap Film     |\n          |       v          |\n    ======|==== [Coil] ======|======  (Coil eye passes through ring)\n          |                  |\n           \\                \/\n     [Polyurethane Carrier Rollers] (Drive coil rotation)<\/code><\/pre>\n<p>The machine mainframe features vertical height adjustment to center the ring aperture with the coil cross-section. Precise vertical centering is critical: an eccentric coil position causes the packaging film web length to oscillate cyclically on every revolution, generating erratic tension spikes, film neckdown, and uneven overlap pitch.<\/p>\n<p>Ring rotation and roller peripheral speeds are governed by separate variable frequency drives (VFDs). Adjusting the ratio between ring RPM and roller feed speed allows operators to precisely set film overlap between 10% and 90%. Control architectures support both manual jog controls for coil alignment and single-key semi-automatic cycles, allowing a single operator to complete loading, wrapping, and unloading safely.<\/p>\n<hr \/>\n<h2>Steel Coil Wrapper vs. Pipe Coil Packing Machine<\/h2>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Specification Parameter<\/th>\n<th style=\"text-align: left\">Economic Steel Coil Wrapper (FPS-300 Series)<\/th>\n<th style=\"text-align: left\">Light Pipe Coil Wrapper (FPH-300N)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Coil Inner Diameter (ID)<\/strong><\/td>\n<td style=\"text-align: left\">508\u2013610 mm (Standard steel core expansion)<\/td>\n<td style=\"text-align: left\">300\u2013700 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Coil Outer Diameter (OD)<\/strong><\/td>\n<td style=\"text-align: left\">600\u20131,200 mm<\/td>\n<td style=\"text-align: left\">500\u20131,000 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Coil Width \/ Axial Length<\/strong><\/td>\n<td style=\"text-align: left\">100\u2013300 mm<\/td>\n<td style=\"text-align: left\">100\u2013300 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Rated Load Capacity<\/strong><\/td>\n<td style=\"text-align: left\">20\u20131,000 kg<\/td>\n<td style=\"text-align: left\">10\u2013100 kg<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Coil Loading Method<\/strong><\/td>\n<td style=\"text-align: left\">Floor roll-in \/ ramp entry \/ light crane<\/td>\n<td style=\"text-align: left\">Manual benchtop loading<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Drive Power Consumption<\/strong><\/td>\n<td style=\"text-align: left\">1.5 kW (Heavy-duty geared motors)<\/td>\n<td style=\"text-align: left\">1.9 kW (High-speed ring drive)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Primary Material Suitability<\/strong><\/td>\n<td style=\"text-align: left\">Steel slit coils, cold-rolled strip, wire bundles<\/td>\n<td style=\"text-align: left\">Corrugated PE\/PVC pipes, flexible garden hose<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The geometric envelopes of these two systems overlap significantly in OD and coil face width, which frequently causes plant buyers to treat them as interchangeable. However, structural mass ratings define a hard operational boundary:<\/p>\n<ol>\n<li><strong>Lower ID Boundary:<\/strong> Small corrugated pipe coils with an ID below 508 mm physically cannot mount onto the steel coil wrapper&#8217;s heavy-duty roller bed, as the roller center distance and chassis geometry require a minimum 508 mm bore.<\/li>\n<li><strong>Structural Weight Boundary:<\/strong> A slit steel coil wound on a standard 508 mm core fits inside the FPH-300N pipe wrapper&#8217;s 300\u2013700 mm ID window geometrically. However, loading a half-tonne steel coil onto the FPH-300N will yield the cantilevered support rollers, bend the chassis frame, and burn out the 100 kg rated transmission within cycles.<\/li>\n<\/ol>\n<hr \/>\n<h2>Calculating Coil Weight from Physical Dimensions<\/h2>\n<p>Never size a coil wrapper using average batch estimates; sizing must be verified against the densest product run on your slit line. Steel mass is calculated from hollow cylinder geometry and nominal density (7,850 kg\/m\u00b3):<\/p>\n<p><em>Plain-text engineering formula:<\/em>\n<code>W (kg) = (&pi; \/ 4) &times; [OD (m)&sup2; &minus; ID (m)&sup2;] &times; Width (m) &times; 7,850 kg\/m&sup3;<\/code><\/p>\n<h3>Worked Example: Standard Slit Strip Coil<\/h3>\n<ul>\n<li><strong>Core ID:<\/strong> 508 mm (0.508 m)<\/li>\n<li><strong>Coil OD:<\/strong> 900 mm (0.900 m)<\/li>\n<li><strong>Face Width:<\/strong> 150 mm (0.150 m)<\/li>\n<\/ul>\n<ol>\n<li><strong>Cross-Sectional Ring Face Area:<\/strong>\n<code>A = (&pi; \/ 4) &times; (0.900&sup2; &minus; 0.508&sup2;) = 0.7854 &times; (0.8100 &minus; 0.2581) = 0.4335 m&sup2;<\/code><\/li>\n<li><strong>Total Steel Volume:<\/strong>\n<code>V = 0.4335 m&sup2; &times; 0.150 m = 0.0650 m&sup3;<\/code><\/li>\n<li><strong>Total Solid Mass:<\/strong>\n<code>W = 0.0650 m&sup3; &times; 7,850 kg\/m&sup3; = 510.4 kg<\/code><\/li>\n<\/ol>\n<p>At ~510 kg, this payload operates comfortably within the economic steel wrapper&#8217;s 1,000 kg capacity limit, but exceeds the FPH-300N&#8217;s 100 kg limit by over 400%. Conversely, a coiled high-density polyethylene (HDPE) conduit of the same external dimensions weighs less than 70 kg due to polymer wall thickness and internal air space, making the FPH-300N the optimal machine choice.<\/p>\n<hr \/>\n<h2>Carrier Rollers and Coil Surface Protection<\/h2>\n<p>Cold-rolled steel coils, galvanized strips, and precision-slit stock require scratch-free surface handling. The steel coil wrapper integrates carrier and side guide rollers lined with heavy-duty <strong>polyurethane (PU) elastomeric sleeves (90\u201395 Shore A)<\/strong>. This prevents metal-to-metal contact, dampens rotational vibration, and resists abrasion.<\/p>\n<pre><code class=\"lang-text language-text text\">       [Slit Steel Strip]\n              ||\n   (Burr) --&gt; || &lt;-- (Sheared Edge)\n         ============  &lt;- High-durometer Polyurethane (90 Shore A)\n         |  Steel   |  &lt;- Heavy-wall Steel Core Tube\n         |  Roller  |\n         ============<\/code><\/pre>\n<h3>Slit Edge Burr Inspection &amp; Maintenance<\/h3>\n<p>Slit coils cut by mechanical rotary shear knives feature razor-sharp burrs along their edges. When rotating under heavy downforce on carrier rollers, these burrs act as continuous cutting teeth.<\/p>\n<ul>\n<li><strong>Maintenance Rule:<\/strong> Inspect roller PU coatings weekly on slit coil lines.<\/li>\n<li><strong>Failure Mode:<\/strong> Once burrs slice through the polymer down to the steel roller core, bare steel contact causes gouging on coil flanks, resulting in secondary customer rejections.<\/li>\n<li><strong>Handling Constraints:<\/strong> Slit coils below 300 kg can roll into the wrapper via entry ramps. For coils approaching 1,000 kg or wider than 200 mm, rolling by hand presents severe crush hazards; these require overhead crane loading via C-hook or an integrated hydraulic coil-car loading deck.<\/li>\n<\/ul>\n<hr \/>\n<h2>Packaging Materials and Core Roll Sizes<\/h2>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Machine Platform<\/th>\n<th style=\"text-align: left\">Compatible Wrapping Media<\/th>\n<th style=\"text-align: left\">Roll Dimension Constraints<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Economic Steel Coil Wrapper<\/strong><\/td>\n<td style=\"text-align: left\">Stretch film (LLDPE), woven HDPE tape, crepe paper, VCI anti-corrosion film<\/td>\n<td style=\"text-align: left\">Core ID: 50 mm<br>Roll OD: 100\u2013450 mm<br>Film Width: 100\u2013150 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>FPH-300N Pipe Wrapper<\/strong><\/td>\n<td style=\"text-align: left\">Cast stretch film (LLDPE); paper or PE knit optional<\/td>\n<td style=\"text-align: left\">Core ID: 50 mm<br>Roll OD: 100\u2013180 mm<br>Film Width: 90\u2013100 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Overlap ratio is adjustable between 10% and 90% via independent inverter speed matching.<\/p>\n<p>Slit steel coil packaging demands tear-resistant, barrier-grade media. Standard 15\u201320 \u00b5m cast stretch film will easily puncture against sheared slit edges during transit. As a result, the steel wrapper utilizes heavy 100\u2013150 mm wide woven HDPE tape, creped Kraft paper, or VCI-impregnated barrier wraps mounted on mechanical friction-plate tensioning dispensers. The FPH-300N uses lighter 90\u2013100 mm stretch film rolls, which wrap lightweight, flexible pipe coils smoothly without causing deformation or edge folding.<\/p>\n<hr \/>\n<h2>Utility Connections and Operational Safety<\/h2>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Utility \/ Compliance<\/th>\n<th style=\"text-align: left\">Economic Steel Coil Wrapper<\/th>\n<th style=\"text-align: left\">FPH-300N Pipe Wrapper<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Connected Electrical Load<\/strong><\/td>\n<td style=\"text-align: left\">1.5 kW<\/td>\n<td style=\"text-align: left\">1.9 kW<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Factory Supply Voltage<\/strong><\/td>\n<td style=\"text-align: left\">380 V, 50 Hz, 3-Phase (60 Hz available)<\/td>\n<td style=\"text-align: left\">380 V, 60 Hz, 3-Phase (50 Hz available)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Pneumatic Supply Pressure<\/strong><\/td>\n<td style=\"text-align: left\">0.4\u20130.6 MPa (4\u20136 bar), clean dry air<\/td>\n<td style=\"text-align: left\">0.4\u20130.6 MPa (application specific)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Primary Safety Standards<\/strong><\/td>\n<td style=\"text-align: left\">ISO 12100:2010, EN 415-10:2014<\/td>\n<td style=\"text-align: left\">ISO 12100:2010, EN 415-10:2014<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Safety Circuit Integration<\/strong><\/td>\n<td style=\"text-align: left\">Category 3 \/ PL d E-stop, safety interlocks<\/td>\n<td style=\"text-align: left\">Category 3 \/ PL d E-stop, safety interlocks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Plant frequency matching must be confirmed prior to build dispatch. Running a 50 Hz motor-gearbox configuration on 60 Hz without VFD compensation increases rotational speed by 20%, resulting in mechanical wear and incorrect overlap ratios.<\/p>\n<p>From a machinery safety perspective, rotating through-the-eye rings represent severe pinch and nip points:<\/p>\n<ul>\n<li>Emergency stops (E-stops) must be wired through dual-channel safety relays.<\/li>\n<li>Perimeter interlocks, optical safety light curtains, or hard mesh fencing must satisfy <strong>EN 415-10:2014<\/strong> guarding distances to isolate operators from the rotating ring assembly during automatic cycles.<\/li>\n<\/ul>\n<hr \/>\n<h2>Machine Selection Checklist<\/h2>\n<p>Before issuing a specification sheet or tender, audit the following six physical production parameters:<\/p>\n<ol>\n<li><strong>Coil Material &amp; Surface Class:<\/strong> Hot-rolled carbon steel, cold-rolled slit strip, copper alloy, or extruded plastic pipe.<\/li>\n<li><strong>Dimension Envelope:<\/strong> Minimum and maximum Coil ID, Coil OD, and axial Width.<\/li>\n<li><strong>Maximum Unit Weight:<\/strong> Compute solid metal weight using <code>W = &pi;\/4 &times; (OD&sup2; &minus; ID&sup2;) &times; Width &times; 7,850 kg\/m&sup3;<\/code>; size for the peak weight, never the nominal average.<\/li>\n<li><strong>Material Handling Method:<\/strong> Floor ramp push-in, overhead crane with C-hook, or upstream walking-beam coil car.<\/li>\n<li><strong>Primary Protective Packaging Media:<\/strong> Single-layer stretch film, multi-layer VCI paper wrap, or laminated woven HDPE tape.<\/li>\n<li><strong>Throughput Target:<\/strong> Required wrapped coils per hour or per shift to match upstream slitting line cycle time.<\/li>\n<\/ol>\n<hr \/>\n<h2>Engineering FAQ<\/h2>\n<h3>Can one wrapper handle both slit steel coils and plastic pipe coils?<\/h3>\n<p>Only if all targeted coils fall inside a unified physical envelope. If your steel coils weigh 300\u2013800 kg, you must select the steel coil wrapper regardless of any pipe coils in your plant; the light pipe coil machine will fail mechanically under steel loads.<\/p>\n<h3>What causes packaging film to tear on the slit edges of a steel coil?<\/h3>\n<p>Film tearing is typically caused by unmitigated slitting burrs cutting through thin gauge (15\u201320 \u00b5m) stretch film, or excessive unwind tension causing film neckdown over sharp coil edges. Remedy this by upgrading to reinforced woven HDPE tape or heavy Kraft paper, and calibrate dispenser tension to eliminate film stretching over sharp corners.<\/p>\n<h3>What is the maximum weight threshold for an economic roll-in coil wrapper?<\/h3>\n<p>The standard floor roll-in model handles up to 1,000 kg. However, manual floor rolling becomes an ergonomic and safety hazard above 300\u2013400 kg. Coils exceeding 500 kg should be handled using crane loading or automated coil-car platforms.<\/p>\n<h3>How does the machine control film overlap?<\/h3>\n<p>Film overlap percentage is governed by the speed ratio between the orbital ring VFD and the carrier roller VFD:<\/p>\n<p><em>Plain-text formula:<\/em>\n<code>Overlap % = [1 &minus; (Roller Surface Speed \/ (Film Width &times; Ring Rotational Speed))] &times; 100<\/code>\nVarying the roller drive frequency alters product advance per revolution, adjusting overlap between 10% and 90%.<\/p>\n<h3>How do I protect delicate galvanized or polished strip coil finishes from roller marks?<\/h3>\n<p>Ensure the machine uses 90 Shore A high-purity polyurethane-lined rollers, keep roller surfaces clean of metal shavings, and install soft-start ramp profiles on the roller inverter drives to prevent slippage during acceleration.<\/p>\n<hr \/>\n<h2>Next Step: Sizing &amp; Inquiry Workflow<\/h2>\n<p>To receive an engineering specification sheet and layout proposal, follow our three-step integration process:<\/p>\n<ol>\n<li><strong>Submit Coil Schedule:<\/strong> Email your dimensional matrix (ID range, OD range, max width, max solid mass) and line throughput requirements to our packaging engineering team at <strong>info@fhopepack.com<\/strong>.<\/li>\n<li><strong>Receive 48-Hour Technical Proposal:<\/strong> We deliver a tailored proposal detailing frame sizing, roller coating specifications, and drive motor kW ratings.<\/li>\n<li><strong>Line Integration &amp; Safety Review:<\/strong> Finalize floor layout drawings, feeding deck elevations, and optical safety curtain zones to integrate the packaging station directly with your slitting line.<\/li>\n<\/ol>\n<hr \/>\n<h2>Related Engineering Documentation<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/Steel-coil-wrapping-machine\/Steel-coil-wrapping-machine-FPS-300.html\">Economic Steel Coil Wrapping Machine (FPS-300 Model Specifications)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/Hose-packaging-machine\/Hose-wrapping-machine-FPH-300.html\">Lightweight Hose &amp; Pipe Coil Wrapping Machine (FPH-300N Series)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/Steel-coil-wrapping-machine\/\">Industrial Master Coil Wrapping Systems Portfolio<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/coil-packing-machine-for-copper-and-alloy-steel-strip\/\">Application Note: Wrapping Copper Strip and High-Alloy Slit Coils<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/economic-wire-wrapping-machine-for-steel\/\">Heavy Wire Coil &amp; Rod Packaging Machine Specifications<\/a><\/li>\n<\/ul>\n<hr \/>\n<h2>Technical References &amp; Norms<\/h2>\n<ul>\n<li><strong>ISO 12100:2010:<\/strong> Safety of machinery \u2014 General principles for design \u2014 Risk assessment and risk reduction.<\/li>\n<li><strong>EN 415-10:2014:<\/strong> Safety of packaging machines \u2014 Part 10: General requirements.<\/li>\n<li><strong>EN 10130:2006:<\/strong> Cold rolled low carbon steel flat products for cold forming \u2014 Technical delivery conditions.<\/li>\n<li><strong>OSHA 29 CFR 1910.212:<\/strong> General requirements for all machines (Point of operation &amp; power transmission guarding).<\/li>\n<\/ul>\n<p><em>Engineering documentation reviewed and approved by Senior Applications Engineering Group.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Executive Summary An economic steel coil wrapping machine and a plastic\/hose pipe coil packing machine share a nearly identical orbital ring design, yet their internal drive trains and mechanical chassis are engineered for entirely different [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2336,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Coil Wrapping Machine for Steel and Pipe Coils: One or 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