{"id":1073,"date":"2018-06-11T03:58:17","date_gmt":"2018-06-11T03:58:17","guid":{"rendered":"http:\/\/www.fhopepack.com\/videos\/?p=1073"},"modified":"2026-11-05T18:01:36","modified_gmt":"2026-11-05T18:01:36","slug":"automatic-rotary-arm-pallet-wrapping-machine-with-top-sheet-covering","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/automatic-rotary-arm-pallet-wrapping-machine-with-top-sheet-covering\/","title":{"rendered":"Rotary Arm Pallet Wrapper with Top Sheet Covering"},"content":{"rendered":"<h3>Executive Summary<\/h3>\n<p>A rotary arm pallet wrapper secures palletized goods by circulating a counterbalanced film carriage around a completely stationary load, eliminating the centrifugal forces and destabilization inherent in turntable wrapping. When integrated with an automatic top sheet covering unit, the system applies a protective water-resistant and dustproof top barrier, mechanically anchoring the sheet edges beneath subsequent horizontal stretch film layers. Engineered directly for inline conveyor flows, this packaging configuration handles unstable, oversized (such as loads up to OD 1400 mm \u00d7 1400 mm on heavy-duty systems), or ultra-heavy goods up to 4000 kg without stopping line momentum or demanding fork truck transfers at the wrapping station.<\/p>\n<iframe loading=\"lazy\" width=\"358\" height=\"636\" src=\"https:\/\/www.youtube.com\/embed\/9Mx0xkXaOZc\" title=\"Rotary Arm Pallet Wrapper with Top Sheet Covering\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<hr \/>\n<h2>Overview<\/h2>\n<p>A rotary arm pallet wrapper winds stretch film around a unitized load while the pallet rests motionless on the floor or an automated conveyor bed. Instead of revolving the pallet mass as a traditional turntable wrapper does, an overhead motorized boom revolves along an orbital path around the load perimeter. This operational profile makes rotary arm systems the standard solution for heavy, extra-tall, or gravitationally unstable products that would fracture, telescope, or topple if spun on a rotating base.<\/p>\n<p>Designed for automated warehousing, contract packaging, and modern manufacturing lines, this equipment family incorporates overhead wrapping and optional top-surface sheet dispensers into a unified packaging cell. The following guide details the kinematic cycle of the arm wrapper, its mechanical operating sequence, top sheet dimensioning calculations, integrated safety controls, and critical specification parameters required for technical inquiry.<\/p>\n<h2>Arm Wraps, Load Stands Still<\/h2>\n<p>In a rotary arm packaging cycle, the unit load never leaves its transport conveyor centerline. The pallet moves smoothly into the envelope of the wrapping cell along powered rollers, comes to a controlled stop, and remains static while the film carriage circulates around it at adjustable speeds (typically 10 to 14 r\/min on high-throughput units such as the RAS100, or 3 to 12 r\/min on standard cells like the RAS200).<\/p>\n<p>Because the pallet platform itself does not rotate, there is no risk of shifting loose goods or stressing the lower layers of the pallet stack. After the wrap sequence concludes and the film tail is cut and wiped, the pallet discharges directly downstream.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Engineering Aspect<\/th>\n<th style=\"text-align: left\">Rotary Arm Wrapper<\/th>\n<th style=\"text-align: left\">Turntable Wrapper<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Load Dynamics<\/strong><\/td>\n<td style=\"text-align: left\">Static; load remains stationary while carriage orbits<\/td>\n<td style=\"text-align: left\">Dynamic; pallet rotates directly on motorized turntable disk<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Load Suitability<\/strong><\/td>\n<td style=\"text-align: left\">Heavy (up to 4000 kg), tall, light, or unstable loads<\/td>\n<td style=\"text-align: left\">Concentrated, balanced, rotationally stable pallet loads<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Material Handling<\/strong><\/td>\n<td style=\"text-align: left\">Inline roller\/chain conveyor with zero-transfer dwell<\/td>\n<td style=\"text-align: left\">Dedicated forklift drop-off or conveyor-fed turntable platform<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Centrifugal Hazard<\/strong><\/td>\n<td style=\"text-align: left\">Zero centrifugal force applied to packaged goods<\/td>\n<td style=\"text-align: left\">Risk of product shifting or layer collapse at higher rotational speeds<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Line Integration<\/strong><\/td>\n<td style=\"text-align: left\">Direct in-line integration across high-speed packaging corridors<\/td>\n<td style=\"text-align: left\">Often configured as stand-alone cells or intermediate index stations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Conveyor pass-line heights, line orientations, and physical perimeter safety guarding layouts are fully engineered to match site-specific floor layouts rather than fixed baseline dimensions.<\/p>\n<h2>What the Machine Does<\/h2>\n<p>The automatic rotary arm wrapping system executes an automated, multi-stage containment cycle coordinated by centralized PLC logic:<\/p>\n<ol>\n<li><strong>Infeed Indexing:<\/strong> The pallet enters the machine via the infeed powered conveyor (standard sections typically 1.5 m operating at approximately 12 m\/min) governed by optical sensors that register arrival and establish accurate wrapping alignment.<\/li>\n<li><strong>Top Barrier Application (Optional Module):<\/strong> If configured with an automatic top-sheet dispenser, the system rolls out and cuts an engineered length of protective polyethylene film over the exposed upper face of the pallet before or during the initial wrapping stage. The sheet overhang drapes downward along the pallet shoulders.<\/li>\n<li><strong>Orbital Film Wrapping:<\/strong> The rotary arm accelerates around the stationary load. Powered pre-stretch rollers dispense film under controlled tension, winding the film down and up the load height. Upper wrap cycles intentionally bind the draped edges of the top sheet against the product sides, sealing the package against moisture penetration and ambient contaminants. Bottom and top wrap revolutions can be set independently from 0 to 99 cycles.<\/li>\n<li><strong>Pneumatic Cut and Clamp:<\/strong> Upon completing the programmed containment wraps, a pneumatic film clamp secures the active web, an automatic hot-wire or mechanical blade cuts the film tail, and a brush-down mechanism wipes the loose film tail flat against the side of the pallet.<\/li>\n<li><strong>Outfeed Discharge:<\/strong> The wrapped pallet is released by the cell control logic and transfers automatically along the outfeed roller conveyor to downstream staging or strapping operations.<\/li>\n<\/ol>\n<h2>Top Sheet, Film and Sizing<\/h2>\n<p>Standard side wrapping leaves the top of a pallet load open to the environment. In multi-tier storage racking, bulk maritime transit, or open yard staging, an unsealed top surface invites dust deposition, industrial dirt, and water damage. Adding a top sheet transforms the unit load into a five-sided moisture-resistant pack.<\/p>\n<p>To ensure weather resistance, top sheet dimensioning must cover the maximum load footprint plus adequate overhang on all four sides. The overhang ensures that the rotary arm carriage catches and binds the sheet edges during the initial high-level film revolutions. Film consumption per pallet depends on load perimeter, total wrap turns, film overlap ratios, and carriage pre-stretch parameters.<\/p>\n<p>Sheet length equals load length plus twice the edge overhang, and sheet width equals load width plus twice the same overhang.<\/p>\n<p>Because motorized film pre-stretch systems extend the film elastically (such as 200% to 300%), the length of film applied to the load is significantly greater than the raw linear film drawn from the parent roll.<\/p>\n<p>To determine machine envelope and conveyor drive sizing, supply the following parameters during technical consultation:<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Input Specification<\/th>\n<th style=\"text-align: left\">System Subsystem Determined<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\"><strong>Load footprint (L \u00d7 W \u00d7 H) &amp; max weight<\/strong><\/td>\n<td style=\"text-align: left\">Rotary arm clearance diameter (e.g., 1500 mm ring on RAS200), drive power, frame gauge<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Top sheet requirement &amp; overhang depth<\/strong><\/td>\n<td style=\"text-align: left\">Dispenser roll carriage width, positioning arm stroke, station layout<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Wrap layers (Bottom, Middle, Top: 0\u201399)<\/strong><\/td>\n<td style=\"text-align: left\">Stretch film volume, cycle duration, total throughput capacity<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Conveyor height &amp; material transfer speed<\/strong><\/td>\n<td style=\"text-align: left\">Upstream\/downstream integration, transfer drives (e.g., standard 12 m\/min)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Target capacity (Pallets per hour)<\/strong><\/td>\n<td style=\"text-align: left\">Rotational drive tuning (e.g., 10\u201330 pallets\/h up to 40\u201350 pallets\/h), arm r\/min<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\"><strong>Facility safety layout &amp; operator access<\/strong><\/td>\n<td style=\"text-align: left\">Interlocked optical curtains, safety perimeter fencing, gate interlock logic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>For specific application benchmarks within this equipment series:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/www.fhopepack.com\/Rotary-arm-wrapping-machine\/Rotary-stretch-wrapper-RAS100.html\">RAS100 Automatic Rotary Arm Stretch Wrapper<\/a>:<\/strong> Handles loads up to OD 1400 mm \u00d7 1400 mm, weight capacity up to 4000 kg, arm speed 10\u201314 r\/min variable frequency drive, film specification LLDPE 0.25 mm (500 mm roll width, 76 mm core, 15 kg roll weight), complete with automatic pneumatic film clamping, cutting, and wiping.<\/li>\n<li><strong><a href=\"https:\/\/www.fhopepack.com\/Rotary-arm-wrapping-machine\/Rotary-arm-wrapper-RAS200.html\">RAS200 Rotary Arm Stretch Wrapper<\/a>:<\/strong> Accommodates loads up to 1200 mm \u00d7 1200 mm \u00d7 2000 mm, maximum load 2000 kg, rotation diameter 1500 mm, arm speed 3\u201312 r\/min, 3.0 kW installed power (220V 50Hz single phase), pneumatic pressure 4\u20136 kgf\/cm\u00b2, rated for capacities up to 40\u201350 pallets\/h with automatic optical height detection.<\/li>\n<\/ul>\n<h2>Controls and Safety<\/h2>\n<p>The arm sweeps an open envelope at speed while pallets index on the conveyor, so the cell is contained. Operators stay outside the fence while the machine is powered, and opening an access door suspends motion through monitored interlocks.<\/p>\n<ul>\n<li><strong>Standards:<\/strong> the cell is designed to ISO 12100 risk-assessment practice and the EN 415-10 packaging-machinery framework.<\/li>\n<li><strong>Access:<\/strong> fencing, safety switches and interlocked gates keep people out of the arm path while letting pallets through; the arrangement follows the site risk assessment.<\/li>\n<li><strong>Pre-delivery test:<\/strong> each unit runs a validation sequence before dispatch, checking cut-and-clamp timing, E-stop response and drive interlocks.<\/li>\n<\/ul>\n<h2>FAQ<\/h2>\n<p><strong>Q: Why add an automatic top sheet if the pallet sides are already stretch wrapped?<\/strong>\nA: Side wrapping closes the vertical walls but leaves the top open. The sheet covers that face against dust and water, and the upper arm wraps fold the overhang down into a five-sided barrier.<\/p>\n<p><strong>Q: Does the pallet rotate while the stretch film is applied?<\/strong>\nA: No. The pallet stays still on the conveyor while the counterbalanced arm revolves around it, which suits unstable, top-heavy, tall or heavy loads.<\/p>\n<p><strong>Q: How is the correct top sheet roll width and cut length determined?<\/strong>\nA: Footprint plus the overhang you want on all four edges, usually 100\u2013200 mm per side, matched to the dispenser stock width so the carriage can bind the edge.<\/p>\n<p><strong>Q: Is the top sheet dispenser standard equipment on all rotary arm wrappers?<\/strong>\nA: No. The dispenser is a modular option: order side-wrap only, or add the overhead applicator where transit and storage demand it.<\/p>\n<h2>Next Step<\/h2>\n<ol>\n<li><strong>Provide System Parameters:<\/strong> Send your facility layout drawings along with maximum pallet dimensions (L \u00d7 W \u00d7 H), minimum\/maximum unit weights, and conveyor line speed requirements to info@fhopepack.com.<\/li>\n<li><strong>Define Packaging Scope:<\/strong> Indicate whether your operation requires the integrated top-sheet moisture barrier, specific conveyor heights, and the direction of material infeed and outfeed.<\/li>\n<li><strong>Receive Engineering Proposal:<\/strong> The FHOPE packaging engineering team will deliver a comprehensive proposal detailing system layout, film containment calculations, and integration drawings within 24 to 48 hours.<\/li>\n<\/ol>\n<h2>Related Resources<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/rotary-arm-wrapping-machine\/\">Rotary Arm Stretch Wrapping Machine Series<\/a> \u2014 Engineering portal and system specifications for the five-model series including RAS200, RAS100, R300, R200, and R100.<\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/Rotary-arm-wrapping-machine\/Rotary-stretch-wrapper-RAS100.html\">Automatic Rotary Arm Stretch Wrapper RAS100<\/a> \u2014 Specifications for 4-ton heavy-duty conveyorized wrapping installations with automatic cut and wipe.<\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/Rotary-arm-wrapping-machine\/Rotary-arm-wrapper-RAS200.html\">Rotary Arm Stretch Wrapper RAS200<\/a> \u2014 High-throughput pallet unitization wrapper featuring optical height detection and 40\u201350 pallets\/hour capability.<\/li>\n<\/ul>\n<p><strong>Last reviewed:<\/strong> 2026-11-05<\/p>","protected":false},"excerpt":{"rendered":"<p>Executive Summary A rotary arm pallet wrapper secures palletized goods by circulating a counterbalanced film carriage around a completely stationary load, eliminating the centrifugal forces and destabilization inherent in turntable wrapping. When integrated with an [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2390,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Rotary Arm Pallet Wrapper with Top Sheet Covering","_seopress_titles_desc":"How our rotary arm wrapper with top sheet covering takes a box-shaped load on a roller conveyor, covers and wraps it in film and sends it on down the 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