Horizontal Orbital Stretch Wrapper for Pallet Loads

Executive summary The horizontal pallet orbital wrapper is engineered to secure unitized pallet loads by conveying them continuously through a motorized rotating ring. Unlike conventional stretch wrappers, this orbital configuration drives the film web continuously through the load cross-section and directly beneath the pallet runners, physically locking the cargo to its wooden or plastic base. Supported by heavy-duty chain conveyors and a synchronized mid-ring transfer bridge, our standard systems accommodate cargo profiles from 800 × 800 mm up to 1,500 × 1,500 mm, operating at linear wrapping speeds of 2–9 m/min.

Table of Contents

• How pallet orbital wrapping works
• Size window
• Time per pallet
• Conveyors and film
• Low-volume option
• Utilities and safety
• Selection checklist
• Engineering FAQ
• Next step
• Related reading
• Sources

How pallet orbital wrapping works

While conventional pallet packaging relies on rotary turntable or rotary arm wrappers, the horizontal orbital stretch wrapper applies an axial wrapping motion. The pallet moves forward along a conveyor while passing directly through the aperture of a dynamic rotating ring. As the ring revolves, the film carriage dispenses stretch film around the top, sides, and through the bottom runner structure of the pallet.

By running film layers directly beneath the pallet baseboards, the orbital wrapper forms an integrated structural bond between the payload and the transport pallet.

       [ Rotating Orbital Ring ]
           ┌──────────────┐
           │   ┌──────┐   │  <-- Stretch Film Trajectory
==== Pallet ===>│ Cargo│========> Straight-line Conveyance (No Rotation)
 Conveyor  │   └──────┘   │       (Ties load & pallet together)
           └──────────────┘

The load moves in a strict linear path and is never subjected to centrifugal acceleration, eliminating the risk of toppling associated with high-speed turntable systems handling unstable, light, or offset loads.

Because film wraps exclusively along the travel axis, the front and rear faces of the pallet load remain accessible by default. If your transport protocol demands full five-sided or six-sided moisture and dust barriers, our engineering proposals integrate an automated top/end-sheet applicator prior to the wrapping station. In fully automated end-of-line systems, the unit wraps purely with high-yield stretch film. For heavy lumber, masonry, or sheet metals requiring extreme vertical containment, automated steel or PET strapping systems can be installed directly upstream.

At cycle completion, a pneumatic clamp-and-cut mechanism captures the film tail and seals it against the pallet profile with a thermal wire or mechanical impulse pad. Line speed and ring velocity are digitally synchronized through variable frequency drives (VFD).

Size window

While standard industrial pallets measure 1,200 mm in length, the horizontal through-feed envelope easily accommodates long materials (up to 6,000 mm) such as stacked panel boards, extrusions, and composite assemblies.

The sizing of the orbital ring is determined by the maximum load diagonal rather than linear dimensions alone:

D_ring ≥ √(Width² + Height²) + 2 × C_clearance

Where C_clearance (typically 150–200 mm) provides absolute dynamic clearance for the rotating film pre-stretch carriage. For example, a 1,200 × 1,000 mm pallet loaded to 1,400 mm height oriented with its 1,000 mm face forward presents a cross-section of 1,000 × 1,400 mm. Its calculated diagonal is √(1,000² + 1,400²) ≈ 1,720 mm, which operates smoothly within our standard 2,000–2,200 mm ring diameter window.

Time per pallet

The pure wrapping transit time through the ring is calculated as:

Transit Time = Load Length ÷ Linear Conveying Speed

For a standard 1,200 mm (1.2 m) pallet:

• At maximum linear speed (9 m/min): 1.2 ÷ 9 = 0.13 min (approx. 8 seconds).
• At minimum linear speed (2 m/min): 1.2 ÷ 2 = 0.60 min (approx. 36 seconds).

Achieving higher layer overlap requires moderating the linear convey speed relative to ring RPM. The linear pitch advance per ring rotation is defined as:

Advance Pitch = Linear Conveying Speed ÷ Ring RPM

• At 9 m/min conveyor speed and 30 r/min ring speed, the advance pitch is 9 ÷ 30 = 0.30 m (300 mm) per revolution.
• At 2 m/min conveyor speed and 60 r/min ring speed, the advance pitch drops to 2 ÷ 60 ≈ 0.033 m (33 mm) per revolution, generating a heavy, multi-layer reinforced wrap.

Overlap represents the percentage of film roll width covered on each subsequent rotation. Infeed positioning, conveyor bridging, cycle stabilization, and film cut-and-wipe routines add 10–15 seconds per load. Actual pallets-per-hour (PPH) rates are calculated against your exact unit profile prior to contract sign-off.

Conveyors and film

Standard roller conveyors cannot pass through the rotating plane because the film loop must envelope the pallet bottom. The system uses hardened triple-strand chain tracks supporting the structural pallet runners.

At the ring throat, a synchronized central bridging transfer system supports loads up to 2,000 kg as they transition across the ring gap, preventing tip-in or jolting of delicate stacks while keeping the circular orbit path unobstructed.

Low-volume option: wrapping from the forklift

For production facilities without inline conveyor automation, our cantilevered forklift orbital wrapper eliminates the requirement for infeed/outfeed transport tracks:

1. The forklift operator drives the palletized load into the cantilevered machine frame.
2. The operator initiates the wrapping cycle via radio-frequency remote control without dismounting.
3. The rotating ring assembly traverses horizontally on precision ground guide rails back and forth along the stationary load, applying the pre-selected overlap pattern.
4. The cycle cuts the film automatically, allowing the truck operator to immediately transfer the secured pallet into rack storage.

Utilities and safety

Operating high-inertia rotating rings at 60 RPM requires comprehensive machine safety zoning:

• CE Compliance: Full adherence to ISO 12100:2010 (Risk assessment and risk reduction) and EN 415-10:2014 (General safety requirements for packaging machines).
• Physical Guarding: 2.0-meter perimeter industrial mesh guarding conforming to ISO 14120.
• Access Safety: Dual-channel safety interlock switches (ISO 14119) on all maintenance gates and Type 4 optical safety light curtains across conveyor infeed and outfeed portals.

Selection checklist for a pallet orbital wrapper

• Load Dimensions: Footprint (W × L), maximum stacked height, and diagonal calculation √(W² + H²).
• Payload Dynamics: Minimum and maximum pallet weight (up to 2,000 kg) and center-of-gravity stability.
• Throughput Demands: Target pallets per hour (PPH) and line integration velocity.
• Barrier Specification: Film containment only, or integrated top-sheeting / strapping upstream.
• Line Layout: Fully automated continuous chain conveyors vs. stationary forklift docking cell.
• Consumable Formulation: LLDPE standard wrap (150–300% pre-stretch), vented wrap for condensation-prone goods, or anti-corrosion VCI films.

Engineering FAQ

Q: Why choose a horizontal orbital wrapper over a traditional pallet turntable? A: Turntables rotate the entire load, exposing high or unstable goods to centrifugal displacement. Furthermore, turntables cannot wrap beneath the pallet blocks. The orbital wrapper carries the pallet along a straight linear vector while circulating film through the pallet underside, mechanically locking payload and skid into a unified block.

Q: What maximum load envelope can pass through the standard ring? A: Standard machinery supports width and height combinations from 800 × 800 mm up to 1,500 × 1,500 mm, with cargo lengths from 1,000 mm up to 6,000 mm and gross weights up to 2,000 kg.

Q: What is the cycle duration for a standard 1,200 mm pallet? A: Pure transit wrapping time ranges from 8 seconds (at 9 m/min convey speed) to 36 seconds (at 2 m/min convey speed for maximum overlap). Total cycle time, including indexing and auto-cut, typically clocks between 22 and 50 seconds.

Q: How does the conveyor maintain pallet stability without severing the film web? A: The conveyor splits into isolated infeed and outfeed chain modules spaced by a central bridging transfer. The load is cantilevered and transferred synchronously across the ring opening while the film passes freely through the mechanical gap.

Q: Is continuous conveyor integration mandatory for this system? A: No. Facilities with low-to-medium throughput (under 20 PPH) can select the forklift-loaded orbital station, where the ring traverses linearly over a stationary pallet held on the truck forks.

Next step

To receive an engineered proposal for an automated pallet orbital wrapping system:

1. Submit Line Specifications: Send your pallet footprint, stack height distributions, and target throughput to info@fhopepack.com.
2. Review Layout Drawing & Cycle Calculation: Receive a detailed equipment layout drawing, complete with cycle-time simulations and ring clearance verifications, within 48 hours.
3. Line Integration Audit: Schedule a technical coordination meeting with our engineering team to review conveyor transfers, electrical controls, and safety protocols.

Related reading

• Horizontal orbital wrapper for pallets
• Forklift orbital pallet wrapper
• Horizontal orbital stretch wrapping machine
• Automatic pallet wrapping machines
• Video: fully automatic pallet wrapping machinery line

Sources

• Pallet orbital wrapping, chain conveyors, and automatic film cutoff: Fhopepack Pallet Orbital Solutions
• Machine envelope, ring drive parameters, and utility specs: Horizontal Orbital Stretch Wrapping Engineering Data
• Cantilevered truck-docked wrapping systems: Forklift Orbital Wrapper Technical Specs
• Machinery safety standards and risk mitigation: ISO 12100:2010 Safety of Machinery
• Packaging machine safety compliance: EN 415-10:2014 Safety Requirements

Last reviewed: 2026-10-04