{"id":1353,"date":"2018-07-27T07:16:48","date_gmt":"2018-07-27T07:16:48","guid":{"rendered":"https:\/\/www.fhopepack.com\/videos\/?p=1353"},"modified":"2026-10-27T08:15:08","modified_gmt":"2026-10-27T08:15:08","slug":"automatic-pallet-turntable-stretch-wrapper-wrapping-machine","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/automatic-pallet-turntable-stretch-wrapper-wrapping-machine\/","title":{"rendered":"Inline Turntable Pallet Stretch Wrapper with Roller Conveyor Integration: Operation, Film Calculation, and Engineering Layout"},"content":{"rendered":"<blockquote>\n<p><strong>Executive summary<\/strong>\nIntegrating an inline motorized roller turntable wrapper eliminates repetitive forklift staging from every palletizing cycle.\nThe heavy-duty inline wrapping system documented below receives pallet loads via upstream motorized roller conveyors, executes automated optical height detection and multi-layer tension wrapping on the integrated turntable, and discharges stable unit loads directly to downstream outfeed logistics.\nTrue film consumption per pallet load is determined by the <strong>load perimeter<\/strong>, <strong>wrap cycle turns<\/strong>, and the mechanical <strong>film carriage pre-stretch ratio<\/strong>.<\/p>\n<\/blockquote>\n<hr \/>\n<h2 id=\"table-of-contents\">Table of Contents<\/h2>\n<ul>\n<li><a href=\"#video\">What the video shows<\/a><\/li>\n<li><a href=\"#how-it-works\">How a load goes through the wrapper<\/a><\/li>\n<li><a href=\"#film\">Film per load<\/a><\/li>\n<li><a href=\"#safety\">Controls and safety<\/a><\/li>\n<li><a href=\"#selection-checklist\">Selection checklist for a conveyor-fed turntable wrapper<\/a><\/li>\n<li><a href=\"#engineering-faq\">Engineering FAQ<\/a><\/li>\n<li><a href=\"#next-step\">Next step<\/a><\/li>\n<li><a href=\"#related-reading\">Related reading<\/a><\/li>\n<li><a href=\"#sources\">Sources<\/a><\/li>\n<\/ul>\n<h2 id=\"video\">What the video shows<\/h2>\n<p>The video demonstrates a fully automated, conveyor-integrated turntable pallet stretch wrapper operating within an end-of-line packaging cell.<\/p>\n<p>A high-profile pallet load transfers from the plant&#8217;s motorized infeed roller bed directly onto the motorized roller turntable embedded within a rigid structural steel chassis. Once dual retro-reflective photo-eyes confirm central alignment, the turntable initiates a VFD-controlled (Variable Frequency Drive) ramped acceleration, rotating smoothly while the vertical mast film carriage applies multi-layer LLDPE stretch film from base to crown.<\/p>\n<p>Upon cycle completion, a pneumatic clamp-and-cut unit secures and severs the film tail, the turntable accurately indexes to home position flush with the line, and the wrapped pallet discharges seamlessly onto the downstream staging conveyor without manual intervention or forklift transfer.<\/p>\n<h2 id=\"how-it-works\">How a load goes through the wrapper<\/h2>\n<p>The operational cycle coordinates mechanical transfer, variable-frequency turntable kinematics, and powered vertical carriage traversal:<\/p>\n<table>\n<thead>\n<tr>\n<th>Operational Step<\/th>\n<th>Kinematic &amp; Mechanical Sequence<\/th>\n<th>Cycle Phase (Video Reference)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Infeed &amp; Induction<\/strong><\/td>\n<td>Upstream accumulation conveyor releases unit load; powered rollers index the pallet across the frame interface.<\/td>\n<td>approx. 0\u20134 s<\/td>\n<\/tr>\n<tr>\n<td><strong>Optical Indexing &amp; Centering<\/strong><\/td>\n<td>Load reaches the centerline stop sensor; PLC decodes optical position, halts turntable rollers, and confirms load footprint.<\/td>\n<td>approx. 4\u20138 s<\/td>\n<\/tr>\n<tr>\n<td><strong>Rotary Tension Wrap<\/strong><\/td>\n<td>Turntable accelerates via S-curve profile (0\u201312 RPM); powered pre-stretch carriage tracks vertically via chain drive to apply bottom reinforcement, helical body, and top containment wraps.<\/td>\n<td>approx. 12\u201348 s<\/td>\n<\/tr>\n<tr>\n<td><strong>Cut, Wipe &amp; Outfeed Discharge<\/strong><\/td>\n<td>Pneumatic clamp-and-cut trims the film tail; turntable decelerates to exact roller line-up; powered rollers discharge the finished pallet to the outfeed conveyor.<\/td>\n<td>approx. 52\u201356 s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Because the rotary turntable incorporates its own driven roller deck, pallet movement remains strictly horizontal and co-planar, preventing load destabilization, pallet runner scuffing, or hydraulic lifting delays.<\/p>\n<h2 id=\"film\">Film per load<\/h2>\n<p>Estimating film consumption per cycle requires accounting for both the exterior geometric perimeter of the unit load and the mechanical gear ratio of the powered pre-stretch carriage.<\/p>\n<h3>Geometric Laydown vs. Actual Resin Consumption<\/h3>\n<ol>\n<li><strong>Nominal Film Laid on Load (L_laid):<\/strong>\n<code>L_laid = Perimeter &times; Total Ring Turns<\/code><\/li>\n<li><strong>Actual Film Roll Dispensed (L_consumed):<\/strong>\n<code>L_consumed = L_laid \/ (1 + Pre-stretch Ratio)<\/code><\/li>\n<\/ol>\n<h3>Engineering Calculation Example (EUR Standard Pallet Profile)<\/h3>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Metric Value<\/th>\n<th>Engineering Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Load Footprint (W \u00d7 L)<\/td>\n<td>1,200 \u00d7 800 mm<\/td>\n<td>Standard EUR Pallet Profile<\/td>\n<\/tr>\n<tr>\n<td>Load Perimeter<\/td>\n<td>2 \u00d7 (1,200 + 800) = 4,000 mm (4.0 m)<\/td>\n<td>Outer wrapping surface<\/td>\n<\/tr>\n<tr>\n<td>Load Height \/ Turntable Turns<\/td>\n<td>1,800 mm \/ 10 Total Turns<\/td>\n<td>3 bottom + 4 body + 3 top wraps<\/td>\n<\/tr>\n<tr>\n<td>Total Nominal Film Laid<\/td>\n<td>10 \u00d7 4.0 m = 40.0 m<\/td>\n<td>Total linear film on load<\/td>\n<\/tr>\n<tr>\n<td>Powered Pre-Stretch Ratio<\/td>\n<td>250% (Elongation factor = 3.5\u00d7)<\/td>\n<td>Standard dual-motor pre-stretch carriage<\/td>\n<\/tr>\n<tr>\n<td>Actual Linear Film Dispensed<\/td>\n<td>40.0 m \/ 3.5 = 11.43 m<\/td>\n<td>True film drawn from roll core<\/td>\n<\/tr>\n<tr>\n<td>Film Weight per Load (23 \u00b5m film)<\/td>\n<td>approx. 125.7 g<\/td>\n<td>500 mm web width at 0.92 g\/cm\u00b3 density<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>By utilizing dynamic powered pre-stretch rollers rather than friction brakes, the automated packaging cell delivers 250% stretch, reducing actual film consumption from 40.0 linear meters down to just 11.43 meters per pallet.<\/p>\n<h2 id=\"safety\">Controls and safety<\/h2>\n<p>Inline conveyor-fed wrappers handle heavy dynamic payloads (up to 2,000 kg) rotating at tangential edge speeds exceeding 1.2 m\/s. Safe autonomous integration requires strict compliance with international functional safety standards.<\/p>\n<ul>\n<li><strong>Harmonized Standards:<\/strong>\n<ul>\n<li><strong>EN 415-6:<\/strong> Specific European safety requirements for pallet stretch wrapping machinery, defining minimum mechanical perimeter fencing and interlocked service access.<\/li>\n<li><strong>ISO 12100 \/ EN 415-10:<\/strong> General principles for packaging machinery risk assessment, fail-safe emergency stop circuits, and hazard zone mitigation.<\/li>\n<\/ul><\/li>\n<li><strong>Physical Safety Perimeters:<\/strong> Full-height steel mesh safety fencing (minimum 2,000 mm) around the rotation radius to safeguard personnel against pinch points or thrown fragments.<\/li>\n<li><strong>Active Light Curtains:<\/strong> Category 4 optical safety light curtains positioned across the conveyor infeed and outfeed openings with PLC mute-sensor timing to distinguish between moving pallets and human intervention.<\/li>\n<li><strong>LOTO Integration:<\/strong> OSHA-compliant Lockout\/Tagout pneumatic isolation dump valves and pad-lockable main electrical disconnects for maintenance within the rotation envelope.<\/li>\n<\/ul>\n<h2 id=\"selection-checklist\">Selection checklist for a conveyor-fed turntable wrapper<\/h2>\n<p>Engineers and plant managers planning an inline integration should define the following operational boundary conditions:<\/p>\n<ul>\n<li><strong>Pallet Profile:<\/strong> Length \u00d7 Width \u00d7 Height (maximum and minimum allowable dimensions, including overhang).<\/li>\n<li><strong>Payload Dynamics:<\/strong> Maximum gross weight (e.g., 1,500 kg or 2,000 kg) and bottom deck board configuration (2-way vs. 4-way runner orientation).<\/li>\n<li><strong>Conveyor Interface:<\/strong> Top-of-roller (TOR) elevation (standard 400 mm\u2013650 mm), roller pitch\/center distance, and transport speed (standard 12\u201315 m\/min).<\/li>\n<li><strong>Throughput Demands:<\/strong> Target pallet rate (e.g., 25\u201340 loads\/hour), specifying wrap patterns (bottom\/top wrap counts, overlap %).<\/li>\n<li><strong>Film Specification:<\/strong> Roll core diameter (76 mm), roll outer diameter (max 250 mm), film gauge (17\u201335 \u00b5m), and target pre-stretch gear ratio (200%, 250%, or 300%).<\/li>\n<li><strong>Containment Requirements:<\/strong> Inclusion of an integrated top-sheet dispenser for dust\/splash protection, or a vertical load stabilizing top platen for light\/unstable products.<\/li>\n<li><strong>Control Architecture:<\/strong> PLC preference (Siemens S7-1200\/1500 or Allen-Bradley CompactLogix) and fieldbus integration (EtherNet\/IP, PROFINET) with upstream accumulation systems.<\/li>\n<\/ul>\n<h2 id=\"engineering-faq\">Engineering FAQ<\/h2>\n<p><strong>Q: What is the primary operational advantage of an inline turntable over a standalone stretch wrapper?<\/strong>\nA: An inline motorized roller wrapper directly couples with production conveyors, eliminating manual forklift staging and cycle wait times. The forklift operator only deposits raw pallets at line infeed or retrieves secured unit loads at outfeed racks, cutting palletizing labor by up to 80%.<\/p>\n<p><strong>Q: How does turntable positioning accuracy affect conveyor discharge?<\/strong>\nA: The turntable utilizes a high-resolution proximity encoder and variable frequency drive (VFD) braking. It decelerates along a parabolic ramp to stop within \u00b13 mm of the stationary conveyor rollers, preventing pallet hang-ups, roller bearing shock, and transfer jams.<\/p>\n<p><strong>Q: Can this machine stabilize extremely light or fragile stacked boxes?<\/strong>\nA: Yes. For unstable, tall, or lightweight loads subject to centrifugal forces during turntable acceleration, the unit can be equipped with an overhead pneumatic stabilizing platen (press-top plate) and soft-start VFD acceleration ramps down to 3 RPM.<\/p>\n<p><strong>Q: How do we calculate actual film cost per wrapped pallet?<\/strong>\nA: Divide the nominal film laydown length by your machine&#8217;s pre-stretch factor (e.g., divide by 3.5 for 250% pre-stretch). Multiply the resulting dispensed length by the film web width, thickness, and resin density (approx. 0.92 g\/cm\u00b3) to yield exact weight in grams, then apply your bulk polymer resin cost per kilogram.<\/p>\n<p><strong>Q: How does the automatic film tail management system function?<\/strong>\nA: At the end of the wrapping program, a pneumatically actuated mechanical clamp captures the film web against the pallet while a heated nichrome wire or serrated air-driven blade severs the film. A motorized soft brush or pneumatic wiper seals the film tail smoothly to the load body.<\/p>\n<h2 id=\"next-step\">Next step<\/h2>\n<p>Our packaging automation engineering team reviews plant layouts and designs turn-key inline wrapping cells through an efficient 3-step qualification process:<\/p>\n<ol>\n<li><strong>Submit Facility Engineering Data:<\/strong> Send your layout CAD drawings (DXF\/DWG\/PDF), maximum pallet envelope, conveyor TOR elevations, and line throughput requirements to <strong>info@fhopepack.com<\/strong>.<\/li>\n<li><strong>48-Hour Technical Proposal:<\/strong> Receive a comprehensive engineering proposal detailing line clearance drawings, cycle rate simulations, power\/pneumatic drops, and film consumption ROI calculations within 48 business hours.<\/li>\n<li><strong>Engineering Layout Review &amp; On-Site Alignment:<\/strong> Schedule an engineering consultation with our project managers to finalize upstream\/downstream conveyor handshakes, fieldbus I\/O signals, and safety fence layouts.<\/li>\n<\/ol>\n<h2 id=\"related-reading\">Related reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/Automatic-pallet-wrapping-machine\/\">Automatic Pallet Wrapping Machine Systems<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/automatic-turntable-pallet-wrapping-machine-line\/\">Video: Fully Automatic Turntable Pallet Wrapping Machine Line Integration<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/turntable-stretch-wrapper-b200\/\">Video: Industrial Heavy-Duty Turntable Stretch Wrapper B200 Series<\/a><\/li>\n<\/ul>\n<h2 id=\"sources\">Sources<\/h2>\n<ul>\n<li>Mechanical Engineering Specifications: FHOPE Packaging Automation Division, 2026-10-04<\/li>\n<li>Safety of Packaging Machines \u2014 Pallet Wrapping Machines: EN 415-6<\/li>\n<li>Safety of Machinery \u2014 General Principles for Design and Risk Assessment: <a href=\"https:\/\/www.iso.org\/standard\/51528.html\">ISO 12100:2010<\/a><\/li>\n<li>General Safety Requirements for Packaging Machines: <a href=\"https:\/\/www.nen.nl\/en\/nen-en-415-10-2014-en-191845\">EN 415-10:2014<\/a><\/li>\n<li>Reference Video Demonstration: <a href=\"https:\/\/www.youtube.com\/@fhopepack\">FHOPE Industrial Pallet Handling Channel<\/a><\/li>\n<\/ul>\n<p><strong>Last reviewed:<\/strong> 2026-10-04<\/p>\n<iframe loading=\"lazy\" width=\"940\" height=\"535\" src=\"https:\/\/www.youtube.com\/embed\/6HUMww3OMiU\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>","protected":false},"excerpt":{"rendered":"<p>Executive summary Integrating an inline motorized roller turntable wrapper eliminates repetitive forklift staging from every palletizing cycle. 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