{"id":274,"date":"2018-04-19T02:12:07","date_gmt":"2018-04-19T02:12:07","guid":{"rendered":"http:\/\/www.fhopepack.com\/videos\/?p=274"},"modified":"2026-11-06T13:22:20","modified_gmt":"2026-11-06T13:22:20","slug":"aluminum-rod-material-wrapper-mvi-1379","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/aluminum-rod-material-wrapper-mvi-1379\/","title":{"rendered":"Aluminum Rod Material Wrapper: Engineering Sizing and Horizontal Orbital Packaging Guide"},"content":{"rendered":"<blockquote>\n<p><strong>Executive Summary<\/strong><\/p>\n<p>An aluminum rod material wrapper is an automated horizontal orbital stretch wrapping system designed to protect extruded, drawn, or polished aluminum bars from mechanical galling, surface abrasion, and atmospheric moisture during handling and transit. The aluminum rod advances linearly on non-marking support conveyors without rotation while an orbital ring rotates circumferentially around it, laying a continuous, overlapping spiral of protective stretch film. On standard configurations like the E300 and E400, typical pass-through capacities span 100\u2013400 mm outer diameter (OD) and 15\u2013100 kg standard roller payloads. Because the density of structural aluminum alloys is approximately 2,700 kg\/m\u00b3, solid bar mass scales quadratically with diameter, making cross-sectional weight capacity and deflection limits the primary engineering checkpoints over clearance envelope dimensions.<\/p>\n<\/blockquote>\n<iframe loading=\"lazy\" width=\"940\" height=\"535\" src=\"https:\/\/www.youtube.com\/embed\/3MB8gYDxn6s\" title=\"Aluminum rod material wrapper in operation\" frameborder=\"0\" allow=\"accelerometer; autoplay; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<hr \/>\n<h2>Why Aluminum Rods Require Full-Length Spiral Wrapping<\/h2>\n<p>Structural, aircraft, and architectural aluminum alloys (such as 6061, 6082, and 7075) feature sensitive surface finishes vulnerable to contact damage during transit and storage:<\/p>\n<ul>\n<li><strong>Surface Galling and Metal Transfer:<\/strong> Bare aluminum rubs readily against rack steel, forklift tines, or adjacent bundles, creating mechanical scratches, friction gouging, and abrasive cosmetic defects.<\/li>\n<li><strong>Moisture and Oxidation Staining:<\/strong> Exposed to temperature cycling in transit, trapped humidity condenses in inter-rod contact zones, triggering galvanic oxidation, water stains, and white-rust corrosion on precision-turned or mill-finish stock.<\/li>\n<li><strong>Uniformity Over Spot Strapping:<\/strong> Spot banding concentrates clamping stress at isolated contact lines, risking edge denting while leaving bar spans unprotected. Continuous horizontal spiral wrapping encapsulates the full bar length under a constant radial film tension set for the bar surface and film grade. Polyethylene stretch film, VCI (Vapor Corrosion Inhibitor) film, paper, or woven tape can be applied to meet specific corrosion-inhibition and freight requirements.<\/li>\n<\/ul>\n<hr \/>\n<h2>How Horizontal Orbital Rod Wrappers Operate<\/h2>\n<p>The orbital wrapping process isolates linear product feed from ring rotation, ensuring the rod does not twist during packaging:<\/p>\n<p>[Infeed Conveyor (PU-Coated)] &#8212;&gt; [Orbital Ring Carriage] &#8212;&gt; [Outfeed Conveyor]\n(Linear Feed: v_c) (Rotational Speed: \u03c9) (Sealed Discharge)<\/p>\n<ul>\n<li>Film Carriage &amp; Core<\/li>\n<li>Dual Polyurethane Drive<\/li>\n<\/ul>\n<ol>\n<li><strong>Non-Rotational Linear Advance:<\/strong> The aluminum rod travels on polyurethane-lined conveyor rollers that isolate finished surfaces from steel contact. The motorized roller conveyor moves the rod through the center of the rotating ring assembly.<\/li>\n<li><strong>Balanced Orbital Ring Motion:<\/strong> Driven by a balanced dual polyurethane friction-wheel system, the structural alloy ring rotates smoothly around the passing bar. The onboard carriage dispenses continuous film web under mechanically or pneumatically regulated tension.<\/li>\n<li><strong>Independent Frequency Inverter Control:<\/strong><\/li>\n<\/ol>\n<ul>\n<li><strong>Conveyor Drive Inverter:<\/strong> Controls linear product advance speed (<code>v_c<\/code>, 5\u201315 m\/min on E300; 5\u201325 m\/min on E400).<\/li>\n<li><strong>Ring Drive Inverter:<\/strong> Controls orbital rotational speed (<code>&omega;<\/code>, 20\u201390 r\/min).<\/li>\n<li>The ratio between conveyor speed and ring speed sets the spiral pitch and overlap percentage (10\u201390%).<\/li>\n<\/ul>\n<ol start=\"4\">\n<li><strong>Automated Cut &amp; Clamp Integration:<\/strong> In fully automatic installations, pneumatic mechanical clamping and hot-wire or blade cut-off systems grasp and sever the film tail automatically, enabling uninterrupted inline packaging. In contrast, batch operations utilizing semiautomatic units rely on manual film attachment and cut operations.<\/li>\n<\/ol>\n<hr \/>\n<h2>E300 and E400 Orbital Wrapper Engineering Specifications<\/h2>\n<p>Choosing between horizontal orbital packaging models depends on the cross-sectional envelope, packaging linear speed, and material selection:<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Engineering Parameter<\/th>\n<th style=\"text-align: left\">E300 Standard Platform<\/th>\n<th style=\"text-align: left\">E400 Heavy-Duty Platform<\/th>\n<th style=\"text-align: left\">S300 Semiautomatic Platform<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Target Operation Mode<\/strong><\/td>\n<td style=\"text-align: left\">Fully Automatic Inline<\/td>\n<td style=\"text-align: left\">Fully Automatic High-Speed<\/td>\n<td style=\"text-align: left\">Semiautomatic Offline Batch<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Pass-Through Outer Diameter (OD)<\/strong><\/td>\n<td style=\"text-align: left\">100\u2013300 mm (50 mm with support)<\/td>\n<td style=\"text-align: left\">100\u2013400 mm<\/td>\n<td style=\"text-align: left\">50\u2013300 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Minimum Workpiece Length<\/strong><\/td>\n<td style=\"text-align: left\">1,000 mm<\/td>\n<td style=\"text-align: left\">1,200 mm<\/td>\n<td style=\"text-align: left\">1,000 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Standard Maximum Payload<\/strong><\/td>\n<td style=\"text-align: left\">15\u2013100 kg (standard roller bed)<\/td>\n<td style=\"text-align: left\">15\u2013100 kg (custom structure if &gt;100 kg)<\/td>\n<td style=\"text-align: left\">15\u2013100 kg<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Conveyor Feed Velocity<\/strong><\/td>\n<td style=\"text-align: left\">5\u201315 m\/min (VFD controlled)<\/td>\n<td style=\"text-align: left\">5\u201325 m\/min (VFD controlled)<\/td>\n<td style=\"text-align: left\">Manual or fixed indexing<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Orbital Ring Rotational Speed<\/strong><\/td>\n<td style=\"text-align: left\">20\u201390 r\/min<\/td>\n<td style=\"text-align: left\">20\u201390 r\/min<\/td>\n<td style=\"text-align: left\">100 r\/min<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Infeed \/ Outfeed Conveyor Length<\/strong><\/td>\n<td style=\"text-align: left\">2,000 mm + 2,000 mm standard<\/td>\n<td style=\"text-align: left\">Configurable to bar length<\/td>\n<td style=\"text-align: left\">2,000 mm + 2,000 mm standard<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Applicable Film Material<\/strong><\/td>\n<td style=\"text-align: left\">PE stretch film<\/td>\n<td style=\"text-align: left\">PE, Paper, PP, Woven film<\/td>\n<td style=\"text-align: left\">PE stretch film<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Film Roll Geometry<\/strong><\/td>\n<td style=\"text-align: left\">Width: 100\u2013200 mm; Core ID: 50 mm; Roll OD: 100\u2013200 mm<\/td>\n<td style=\"text-align: left\">Width: 100\u2013200 mm; Core ID: 50\/76 mm; Roll OD: 100\u2013200 mm<\/td>\n<td style=\"text-align: left\">Width: 120 mm; Core ID: 50 mm; Roll OD: 250 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Installed Power Supply<\/strong><\/td>\n<td style=\"text-align: left\">Approx. 2.5 kW, 380V, 3-Phase, 60Hz<\/td>\n<td style=\"text-align: left\">Approx. 2.5 kW, 380V, 3-Phase, 60Hz<\/td>\n<td style=\"text-align: left\">Approx. 1.5 kW, AC 380V, 60Hz<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Adjustable Film Overlap<\/strong><\/td>\n<td style=\"text-align: left\">10\u201390%<\/td>\n<td style=\"text-align: left\">10\u201390%<\/td>\n<td style=\"text-align: left\">Operator paced \/ manual setting<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Machine Selection Boundaries<\/h3>\n<ul>\n<li><strong>Standard E300 Boundary:<\/strong> For single rods or bundles where outer diameter is \u2264300 mm and total workpiece mass is \u2264100 kg, the <a href=\"https:\/\/www.fhopepack.com\/Horizontal-orbital-stretch-wrapper\/E300.html\">E300 Horizontal Orbital Wrapper<\/a> is the standard engineering selection, delivering ring speeds of 20\u201390 r\/min and wrapping feed speeds of 5\u201315 m\/min.<\/li>\n<li><strong>E400 High-Capacity Envelope:<\/strong> For product diameters spanning 300\u2013400 mm, the <a href=\"https:\/\/www.fhopepack.com\/Horizontal-orbital-stretch-wrapper\/E400.html\">E400 Horizontal Orbital Wrapper<\/a> provides the necessary clearance and offers higher throughput (5\u201325 m\/min wrapping speed). However, its standard load rating remains 100 kg. If solid aluminum bars or bundles exceed 100 kg, reinforced roller bearings, drive motors, and frame supports must be engineered and confirmed by project quotation; higher load capacity must not be assumed.<\/li>\n<li><strong>S300 Semiautomatic Consideration:<\/strong> For standalone extrusion cells, maintenance facilities, or low-volume custom batches, the <a href=\"https:\/\/www.fhopepack.com\/Horizontal-orbital-stretch-wrapper\/S300.html\">S300 Semiautomatic Orbital Wrapper<\/a> (OD 50\u2013300 mm, 100 r\/min ring speed, ~1.5 kW, 120 mm film width) provides an economical alternative. Throughput is governed by manual product handling rather than continuous line speed.<\/li>\n<\/ul>\n<hr \/>\n<h2>Weight &amp; Structural Sizing for Solid Aluminum Bars<\/h2>\n<p>Aluminum at <strong>\u03c1 \u2248 2.70 g\/cm\u00b3 (2,700 kg\/m\u00b3)<\/strong> makes rod mass grow with the square of the radius, so bearing and drive limits are usually reached before ring clearance becomes restrictive.<\/p>\n<ul>\n<li><strong>Volume (3,000 mm, \u00d850 mm):<\/strong> <code>V &asymp; 5.89 &times; 10\u2076 mm&sup3; &asymp; 5,890 cm&sup3;<\/code><\/li>\n<li><strong>Solid aluminum mass (3,000 mm):<\/strong> <code>M_al &asymp; 5,890 cm&sup3; &times; 2.70 &asymp; 15.9 kg<\/code><\/li>\n<li><strong>Same bar in steel (\u03c1 = 7.85):<\/strong> <code>M_steel &asymp; 46.2 kg<\/code><\/li>\n<\/ul>\n<h3>Engineering Implications of Length and Deflection<\/h3>\n<p>While a 3,000 mm solid \u00d850 mm aluminum rod (15.9 kg) fits within the 15\u2013100 kg payload rating of both the E300 and E400, extending this same bar to 6,000 mm doubles the mass to ~31.8 kg. If transitioning to solid steel round bars on the same production line, a 6,000 mm bar reaches 92.4 kg, immediately approaching the 100 kg structural threshold.<\/p>\n<p>A slender bar also deflects across open roller spans, dipping into the ring throat and feeding off-centre. Where the deflection check shows this, the line needs closer roller spacing or hold-down guides, sized from the actual bar section and span.<\/p>\n<hr \/>\n<h2>Kinematic Sizing Calculation: 3,000 mm Solid Rod<\/h2>\n<p>The calculation below demonstrates the relationship between line advance, ring speed, and cycle duration on an inline orbital wrapping machine:<\/p>\n<h3>Workpiece &amp; Film Baseline<\/h3>\n<ul>\n<li><strong>Bar Geometry:<\/strong> \u00d850 mm solid aluminum bar, Length <code>L<\/code> = 3,000 mm<\/li>\n<li><strong>Material Density:<\/strong> 6000-series aluminum (<code>&rho;<\/code> = 2,700 kg\/m\u00b3)<\/li>\n<li><strong>Packaging Film:<\/strong> Cast PE stretch film, web width <code>W<\/code> = 150 mm<\/li>\n<li><strong>Programmed Spiral Overlap:<\/strong> 50%<\/li>\n<\/ul>\n<h3>Kinematic Breakdown<\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Step<\/th>\n<th style=\"text-align: left\">Formula &amp; Input<\/th>\n<th style=\"text-align: left\">Engineering Output<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>1. Volume &amp; Mass<\/strong><\/td>\n<td style=\"text-align: left\"><code>V = &pi; &times; (0.025 m)&sup2; &times; 3.0 m = 0.00589 m&sup3;<\/code><br><code>M = 0.00589 m&sup3; &times; 2,700 kg\/m&sup3;<\/code><\/td>\n<td style=\"text-align: left\">Volume = 0.0059 m\u00b3<br><strong>Mass = 15.9 kg<\/strong> (Comfortably inside the E300 15\u2013100 kg payload)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>2. Linear Advance per Ring Turn<\/strong><\/td>\n<td style=\"text-align: left\"><code>Advance = Film Width &times; (1 &minus; Overlap %)<\/code><br><code>Advance = 150 mm &times; (1 &minus; 0.50)<\/code><\/td>\n<td style=\"text-align: left\"><strong>Advance = 75 mm \/ revolution<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>3. Required Ring Revolutions<\/strong><\/td>\n<td style=\"text-align: left\"><code>Turns = Rod Length \/ Advance<\/code><br><code>Turns = 3,000 mm \/ 75 mm<\/code><\/td>\n<td style=\"text-align: left\"><strong>40 revolutions<\/strong> (mid-body wrapping)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>4. Matched Conveyor Feed Velocity<\/strong><\/td>\n<td style=\"text-align: left\">At maximum ring rotation (<code>&omega;_max<\/code> = 90 r\/min):<br><code>v_c = 90 r\/min &times; 0.075 m\/rev<\/code><\/td>\n<td style=\"text-align: left\"><strong>v_c = 6.75 m\/min<\/strong> (Within 5\u201315 m\/min VFD range)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>5. Net Spiral Wrapping Duration<\/strong><\/td>\n<td style=\"text-align: left\"><code>t = Length \/ v_c<\/code><br><code>t = 3.0 m \/ (6.75 m \/ 60 s)<\/code><\/td>\n<td style=\"text-align: left\"><strong>Wrap Time \u2248 26.7 seconds<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>6. Film Path per Orbital Turn<\/strong><\/td>\n<td style=\"text-align: left\"><code>Circumference = &pi; &times; 0.050 m = 0.157 m<\/code><br><code>Length\/Turn = &radic;[(0.157)&sup2; + (0.075)&sup2;]<\/code><\/td>\n<td style=\"text-align: left\"><strong>0.174 m film \/ ring turn<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>7. Total Net Film Consumption<\/strong><\/td>\n<td style=\"text-align: left\"><code>L_film = 40 turns &times; 0.174 m<\/code><\/td>\n<td style=\"text-align: left\"><strong>\u2248 6.96 m unexpanded film<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Kinematic Constraint Evaluation<\/h3>\n<p>Attempting to run the infeed conveyor at 15 m\/min while maintaining a 50% overlap on 150 mm film requires a rotational ring speed of:\n<code>&omega;_required = 15,000 mm\/min \/ 75 mm\/rev = 200 r\/min<\/code><\/p>\n<p>This significantly exceeds the 90 r\/min design limit of the industrial friction drive. Therefore, <strong>orbital ring dynamics govern packaging cycle time<\/strong>, not the maximum forward conveyor speed. If cycle acceleration is mandatory, wider film rolls (e.g., 200 mm web) must be utilized to increase linear pitch per revolution.<\/p>\n<hr \/>\n<h2>Engineering Sizing &amp; Procurement Checklist<\/h2>\n<p>When preparing design parameters for an automated aluminum bar packaging system, provide the following operational specifications:<\/p>\n<ol>\n<li><strong>Dimensional Envelope:<\/strong> Minimum and maximum outer diameters (mm), bar length ranges (mm), and cross-section profiles (solid round, square, or hex bundle).<\/li>\n<li><strong>Unit and Bundle Mass:<\/strong> Individual bar weight (kg) and maximum master bundle weight. (Identify whether loads exceed the 100 kg standard roller threshold).<\/li>\n<li><strong>Surface Sensitivity Grade:<\/strong> Mill extruded, centerless ground, anodized, or mirror polished (determines roller sleeve elastomer formulation and hold-down roller pressure).<\/li>\n<li><strong>Protective Wrapping Media:<\/strong> Standard PE stretch film, VCI anti-corrosion barrier film, creped paper, or woven synthetic tapes (defines film roll core requirements: 50 mm vs. 76 mm).<\/li>\n<li><strong>Line Integration &amp; Throughput:<\/strong> Required rods or bundles per hour; continuous in-line feed from cut-off tables vs. crane-loaded offline staging.<\/li>\n<li><strong>Automation Level:<\/strong> Semiautomatic manual film initiation vs. fully automated pneumatic clamp, cut, and tail-wiping units.<\/li>\n<\/ol>\n<hr \/>\n<h2>Safety Compliance: EN 415-10 and ISO 12100<\/h2>\n<p>Horizontal orbital wrappers are guarded against the two hazards that matter on this machine type: the rotating ring and the driven roller nips.<\/p>\n<ul>\n<li><strong>EN 415-10:2014<\/strong> sets the general safety requirements for packaging machines. On this machine it is applied through perimeter guarding and interlocked access to the ring zone.<\/li>\n<li><strong>ISO 12100:2010<\/strong> provides the risk-assessment method: identify the ring, carriage and conveyor hazards, then reduce them by design before adding guarding.<\/li>\n<\/ul>\n<p>The final guard layout, interlock arrangement and access-control devices are set by the site risk assessment and confirmed with the plant safety engineer before acceptance. Do not treat a catalogue machine as pre-certified for a specific plant layout.<\/p>\n<hr \/>\n<h2>Engineering FAQ<\/h2>\n<h4>Q: Does the aluminum rod rotate on the conveyor during wrapping?<\/h4>\n<p><strong>A:<\/strong> No. The rod advances purely along a linear path. The orbital ring rotates around the centerline of the workpiece, dispensing film circumferentially. This non-rotational feed prevents friction against conveyor rollers and eliminates surface galling on polished bars.<\/p>\n<h4>Q: How is a minimum 50 mm OD rod supported on machines with wider openings?<\/h4>\n<p><strong>A:<\/strong> While the standard E300 envelope is 100\u2013300 mm, rigid solid rods down to 50 mm OD can pass through when fitted with intermediate bridge rollers and overhead hold-down stabilizers that prevent bar drop within the center gap of the ring.<\/p>\n<h4>Q: What governs whether an application needs an E300 or E400?<\/h4>\n<p><strong>A:<\/strong> Cross-sectional clearance is the primary differentiator: products under 300 mm OD utilize the E300. Profiles or bundles spanning 300\u2013400 mm OD require the E400. Both share a 100 kg standard load limit; any requirement above 100 kg mandates customized structural reinforcement regardless of machine frame size.<\/p>\n<hr \/>\n<h2>Next Step &amp; Technical Inquiry<\/h2>\n<ol>\n<li><strong>Transmit Workpiece Specifications:<\/strong> Send your bar diameter ranges, lengths, bundle cross-sections, and piece weights to our packaging engineering team at <a href=\"mailto:info@fhopepack.com\">info@fhopepack.com<\/a>.<\/li>\n<li><strong>Kinematic &amp; Structural Review:<\/strong>\u539f\u5382 applications engineers will calculate cycle feasibility, ring-to-load clearance margins, and conveyor payload structures.<\/li>\n<li><strong>Turnkey Layout Proposal:<\/strong> Receive a complete 2D\/3D integration layout, cycle time simulation, and commercial quotation within 24\u201348 hours.<\/li>\n<\/ol>\n<p><strong>Last reviewed:<\/strong> 2026-11-05<\/p>","protected":false},"excerpt":{"rendered":"<p>Executive Summary An aluminum rod material wrapper is an automated horizontal orbital stretch wrapping system designed to protect extruded, drawn, or polished aluminum bars from mechanical galling, surface abrasion, and atmospheric moisture during handling and [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2250,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Aluminum Rod Material Wrapper: Orbital Film Wrapping | FHOPE","_seopress_titles_desc":"How an orbital ring wrapper covers aluminum rod in stretch film: E300 data, rod weight check, ring speed limit and a worked 3,000 mm rod 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