Horizontal Orbital Ring Wrapper for Sheet Metal Bundles

Name: Horizontal Orbital Ring Stretch Wrapper for Sheet Metal Building Materials
Uploaded: 2018-04-19T02:56:30+00:00
Duration: 1 min 46 s
Description: > **Executive summary** > Our horizontal orbital ring stretch wrapper secures wide, flat bundles of sheet metal, sandwich panels, and decorative boards as they pass continuously through a rotating aluminum cast ring. Two heavy-duty models cover the vast majority of industrial requirements: the **E1400** for bundle cross-sections up to **1,400…

Executive summary Our horizontal orbital ring stretch wrapper secures wide, flat bundles of sheet metal, sandwich panels, and decorative boards as they pass continuously through a rotating aluminum cast ring. Two heavy-duty models cover the vast majority of industrial requirements: the E1400 for bundle cross-sections up to 1,400 mm wide, and the E1800 for extra-wide panels up to 1,800 mm wide. Sizing the correct installation requires verifying three primary mechanical metrics: physical bundle width and stack height, true corner diagonal relative to ring internal clearance, and film consumption per linear metre under active pre-stretch.

How the wrapper handles flat bundles
Choosing E1400 or E1800
Ring clearance
Film use per metre
Protecting the sheet surface
Utilities and safety
Selection checklist
Engineering FAQ
Next step
Related reading
Sources

How the wrapper handles flat bundles

In this automated packaging installation, the horizontal orbital ring wrapper encapsulates stacked sheet bundles for the architectural and building materials industries. An automated infeed conveyor transfers the palletized or batten-supported panel stack directly through the center of the rotating ring frame.

As the bundle traverses the wrapping zone at a regulated line speed, the ring rotates circumferentially around the product. This coordinated motion applies linear low-density polyethylene (LLDPE) stretch film in a continuous, tight spiral overlap. Once the stack passes through, an integrated pneumatic clamp-and-cut unit severs the film tail, and the outfeed conveyor transports the protected package to downstream strapping or dispatch staging.

The wrapping station integrates seamlessly into continuous continuous production lines (such as roll forming or sandwich panel lines) or operates offline as an independent packaging cell. Optical photoelectric sensors detect the bundle leading and trailing edges to trigger the wrapping cycle, soft start, dynamic overlap, and cut cycles. The resulting multi-layer film cocoon seals the stack against airborne dust, water ingress, and transit vibration, locking individual sheets firmly together.

Horizontal orbital stretch wrapper E1400 with large wrapping ring and infeed and outfeed conveyors for wide flat packages — **Horizontal orbital stretch wrapper E1400.** Engineered for wide, flat products including sheet metal, insulated panels, doors, and flooring boards.

Choosing E1400 or E1800

Parameter	E1400 Specification	E1800 Specification
Bundle width range	300–1,400 mm	400–1,800 mm
Bundle height range	50–1,000 mm	50–1,500 mm
Minimum bundle length	1,000 mm	1,200 mm
Ring inner aperture (ID)	1,600 mm	2,100 mm
Conveyor line speed	4–15 m/min (VFD controlled)	4–15 m/min (VFD controlled)
Ring rotation speed	10–60 RPM (Inverter driven)	10–50 RPM (Inverter driven)
Film roll width	300 mm or 500 mm	250 mm, 300 mm, or 500 mm
Connected load	Approx. 4.5 kW	Approx. 5.5 kW

Maximum width and height limits cannot be utilized simultaneously at their maximum parameters. A stack measuring 1,400 mm wide by 1,000 mm high exhibits a diagonal cross-section of approximately 1,720 mm, which exceeds the clear envelope of an E1400 ring once the film carriage swing path is taken into account.

For standard panel dimensions, an illustrative bundle of 1,250 mm wide sheets stacked 300 mm high fits cleanly inside the E1400 aperture. Conversely, structural wall panels measuring 1,500 mm wide require the larger E1800 chassis to maintain required physical clearances.

Ring clearance

Because rectangular bundles pass through a circular rotating ring, the critical sizing dimension is always the bundle’s diagonal cross-section rather than its raw width. The envelope must also factor in the thickness of edge protection boards and an engineering operating clearance:

Diagonal calculation: D = √(Width² + Height²)

Minimum required usable ring inner diameter: Ring ID_min ≥ D + (2 × C_clearance)

Where C_clearance represents the minimum dynamic safety margin (typically 100–150 mm) between the bundle corner and the rotating film carriage structure.

Standard Sheet Stack (1,250 × 300 mm): D = √(1250² + 300²) ≈ 1,285 mm. Adding a 2 × 120 mm dynamic clearance establishes a minimum ring aperture of 1,525 mm, fitting safely within the E1400 (1,600 mm ID).
Wide Composite Bundle (1,500 × 400 mm): D = √(1500² + 400²) ≈ 1,552 mm. Factoring in corner protection boards and safety clearance pushes the envelope to 1,800+ mm, requiring the E1800 (2,100 mm ID).

Every application layout undergoes a full CAD clearance simulation to verify corner clearance before the ring diameter is locked in manufacturing.

Film use per metre

Every rotation of the orbital ring wraps stretch film around the bundle perimeter. Material consumption per linear metre is determined by stack dimensions, overlap percentage, and the mechanical pre-stretch ratio.

Take an illustrative bundle measuring 1,250 mm wide by 300 mm high:

Bundle perimeter per wrap: Perimeter = 2 × (1,250 mm + 300 mm) = 3,100 mm (3.1 m).
Spirals required per linear metre: Using standard 500 mm wide film set to a 50% overlap, the conveyor advances 500 mm × (1 - 0.50) = 250 mm per ring revolution. Turns per metre = 1,000 mm / 250 mm = 4 turns/m.
Applied film length: 4 turns × 3.1 m = 12.4 m of film applied onto each linear metre of the bundle.
True raw film roll consumption: Because our power pre-stretch carriage elongates the film at a calibrated ratio (typically 200% pre-stretch, yielding a 3:1 stretch ratio), actual film drawn from the supply roll is calculated as: Roll consumption = 12.4 m / 3.0 ≈ 4.13 m of un-stretched film per linear metre of wrapped bundle.

The film overlap ratio can be adjusted between 10% and 90% via the HMI touchscreen by modulating conveyor drive speed relative to ring RPM, balancing transit puncture resistance against raw consumable costs.

Protecting the sheet surface

Pre-painted steel coils, mirror-finish stainless steel, and composite architectural panels are vulnerable to scratches and surface scuffing. The machine architecture incorporates dedicated protective systems:

Polyurethane-coated rollers: All conveyor contact rollers and lateral alignment guides are covered in high-durability, non-marking polyurethane (Shore 75°–80° A) to eliminate metal-to-metal contact.
Pneumatic vertical press-down units: Overhead stabilizing rollers exert regulated downward pressure on top of the stack, preventing individual upper sheets from fluttering or shifting due to film wrapping tension.
Side guide centralizers: Low-friction lateral guide wheels keep the sheet stack centered along the conveyor centerline, eliminating snaking or corner collisions with the wrapping ring ring chassis.
Dual-ring friction drive: The rotating assembly utilizes dual solid alloy rings driven by heavy-duty polyurethane friction wheels. Variable frequency drive (VFD) soft-start and soft-stop parameters eliminate jerky rotational torque, preventing sudden tension spikes that could buckle thin gauge sheet edges.

Utilities and safety

Utility / Safety System	Engineering Requirement
Electrical service	AC 380 V ±10%, 50/60 Hz, 3-Phase + Neutral + PE
Total connected load	4.5 kW to 5.5 kW (depending on model and conveyor run)
Compressed air supply	0.5–0.7 MPa (5.0–7.0 bar), clean and dry shop air
Air consumption	Approx. 150–200 NL/min (intermittent clamp and press actuation)
Film core specifications	Standard core inner diameter 76 mm (3 in); roll outer diameter up to 250 mm
Safety compliance	ISO 12100:2010 risk assessment, EN 415-10:2014 packaging machinery safety
Enclosure & Interlocks	Perimeter mesh guarding, optical infeed/outfeed light curtains, Cat-4 E-stop loop

All high-speed rotating components operate within an interlocked enclosure. Access panels feature safety limit switches wired into a central safety relay circuit, preventing machine startup whenever guards are opened.

Selection checklist

Before finalizing an orbital wrapping system quote, evaluate your production parameters:

Minimum and maximum bundle dimensions: Width, Height, and Length.
Maximum calculated corner diagonal (including corner boards and skid timbers).
Sheet material characteristics: Bare mill finish, prepainted, embossed, or plastic-masked.
Packaging throughput requirement: Linear metres per minute or finished bundles per hour.
Conveyance specification: Powered roller bed, modular plastic chain, or PVC flat belt.
Integration mode: Fully automated online in-line link with PLC handshakes, or manual forklift staging offline.
Environmental protection target: Basic dust-proofing (30% overlap) versus water-resistant weather seal (70%+ overlap).

Engineering FAQ

Q: Which orbital wrapper model fits a 1,250 mm wide sheet stack? A: The E1400 model accommodates product widths between 300 mm and 1,400 mm. For a stack 1,250 mm wide and 300 mm high, the cross diagonal is approximately 1,285 mm. This allows adequate dynamic clearance within the E1400’s 1,600 mm inner aperture.

Q: Why must sizing be based on the stack diagonal rather than width alone? A: As a rectangular package traverses a circular opening, the extremities of the cross-section swing across the inner radius of the ring. The ring inner aperture must accommodate the hypotenuse √(Width² + Height²) plus the clearance envelope needed by the rotating film dispenser arm.

Q: How much raw stretch film is consumed per linear metre of bundle? A: For a 1,250 × 300 mm bundle with 500 mm film at a 50% overlap, 12.4 metres of film covers the bundle surface per linear metre. Utilizing an integrated 200% pre-stretch system, the machine draws only about 4.13 metres of raw un-stretched film from the supply roll.

Q: How does the system prevent scratching on polished or prepainted sheet surfaces? A: Protection is achieved through non-marking polyurethane-sleeved conveyor rollers, controlled-pressure pneumatic overhead stabilizing clamps that eliminate sheet-on-sheet vibration, and closed-loop electronic film tension regulation.

Q: Can this wrapper function without tying into a primary production line? A: Yes. The machine can operate offline as an autonomous wrapping station equipped with foot-switch or remote control activation, alongside standalone gravity or powered infeed/outfeed accumulation tables.

Next step

Implement an automated wrapping solution tailored to your sheet dimensions in three structured phases:

Submit stack specifications: Email your cross-sectional bundle dimensions, product weights, and line cycle speeds to info@fhopepack.com.
Receive engineering proposal (within 48 hours): Obtain a comprehensive specification package complete with 2D/3D CAD layout clearance verifications, conveyor motor sizing, and film consumption estimates.
Finalize integration and line sign-off: Confirm factory footprint, roller centers, and upstream/downstream safety interlocking interfaces for manufacturing release.