Wire coils — copper, aluminum, galvanized steel strand, and welding wire — are dense, often eye-through, and vulnerable to corrosion, abrasion, and moisture during storage and transit. A FPW-300 eye-through orbital coil wrapping machine automates the entire line from coiling and strapping to wrap coating and stacking. The system winds wire into coils, applies strapping bands, then feeds each coil through an orbital eye-through wrapper that applies stretch film or paper packaging around the coil’s cross-section before stacking for dispatch. This integrated approach eliminates manual wrapping, ensures uniform protection, and achieves cycle times measured in seconds per coil.
Executive Summary
This machine class is one option within the broader family of coil packing machines. Depending on coil geometry, throughput, and line integration, alternatives include turntable-style and horizontal ring systems. The eye-through orbital design is specifically suited for narrow, eye-through wire coils where spinning a loose coil on a turntable could cause layer slippage.
Working Principle
The FPW-300 line operates in a continuous sequence:
- 1. Wire coiling. The uncoiled wire is fed through a tensioner and coiler, which winds it into a tight coil of specified outer diameter (450–850 mm) and inner diameter (300–700 mm). The coiler controls winding speed and tension to ensure consistent coil density.
- 2. Strapping. Once a coil reaches the target size, strapping bands (steel or plastic) are applied automatically at regular intervals around the coil’s circumference to maintain structural integrity during handling and wrapping.
- 3. Eye-through wrapping. The strapped coil is conveyed into the wrapping station. A toroidal ring passes through the coil’s eye, and the ring rotates around the coil’s cross-section while the coil remains stationary. Stretch film or paper is applied from a roll (50 mm core, 100–250 mm OD, 100–120 mm wide) with controlled pre-stretch (typically up to 250%). The orbital ring travels along the coil’s width (100–300 mm), applying overlapping layers from one end to the other — wrapping the outer diameter, inner diameter, and both end faces in one continuous motion.
- 4. Film cut and tail sealing. When the ring completes its traverse, the film is cut automatically at the end of the wrap. A clamp grips the film tail and secures it against the coil surface, preventing the wrap from loosening or unraveling during discharge, stacking, and transit.
- 5. Stacking and discharge. The wrapped coil is conveyed to a stacking area where finished packages are stacked for labeling, strapping (if required), and palletizing. The line can handle coils weighing 10–250 kg at a rate suitable for continuous production.
The key advantage of the eye-through design is that the wrapping ring traverses the coil’s cross-section rather than rotating around a turntable. This is essential for wire coils where spinning a loosely wound coil on a turntable could cause layer slippage, and where the coil geometry (narrow width, large diameter relative to width) makes traditional pallet-wrapping approaches impractical.
Published Specifications
The FPW-300 is designed for the following wire coil dimensions and packaging parameters:
Because wire coil dimensions and throughput requirements vary between operations, final specifications are confirmed against the manufacturer’s datasheet. When evaluating an FPW-300 or equivalent eye-through orbital wrapping line, verify the following parameter groups with the supplier:
| Parameter group | What to confirm |
|---|---|
| Coil dimensions | Minimum and maximum coil OD, ID, width, and weight handled |
| Wrapping material | Compatible film/paper types, core size, roll OD, and width |
| Pre-stretch capability | Maximum pre-stretch ratio for the wrapping film |
| Overlap settings | Programmable overlap range (typically 10–90%) |
| Cycle time | Coils per hour at your specified dimensions |
| Line integration | Conveyor heights, upstream coiler/strapper compatibility, downstream stacking |
| Power supply | Electrical requirements and control voltage |
| Footprint | Machine envelope, loading direction, and clearance |
Request the manufacturer’s datasheet for your specific configuration and confirm each value against your coil drawings.
Engineering Calculation: Sizing Film and Wrap Coverage
A practical sizing exercise you can perform before specifying the machine:
Wrap coverage per revolution. The orbital ring travels along the coil’s width *W* while applying film with overlap ratio *r* and film width *w*. The number of ring passes *N* to cover the width is:
N ≈ W / (w × (1 − r))
*Example:* For a coil width of 200 mm, 120 mm film, and 30% overlap: N ≈ 200 / (120 × 0.7) ≈ 2.4 → 3 passes per layer.
Film consumption. Total film length per coil = π × OD × N × number of layers, adjusted for pre-stretch. If the film is pre-stretched by factor *s*, the delivered film length per roll increases accordingly. Confirm actual pre-stretch values from the machine datasheet.
Cycle time estimation. Total cycle time = coiling time + strapping time + ring traverse time + film cut-and-clamp time + discharge time. Use your target output (coils per hour) to back-calculate required ring speed and confirm the machine’s rated performance covers it with margin.
These calculations give you a defensible basis for comparing quotations and for estimating annual film consumption and cost per coil.
Selection Checklist
Before committing to an FPW-300 line:
- – Coil data confirmed: OD range, ID range, width, weight, winding type (rigid core vs. open).
- – Wrapping material specified: film or paper type, core size, roll dimensions, UV/inhibitor requirements.
- – Pre-stretch capability required: confirm the machine can deliver the pre-stretch ratio needed for your film.
- – Throughput verified: coils per hour at your largest coil size, matched against calculated cycle time.
- – Line integration checked: upstream coiler/strapper compatibility, conveyor heights, downstream stacking area.
- – Safety documentation requested: risk assessment per ISO 12100:2010 and CE compliance per EN 415-10.
- – Supplier verification: request the manufacturer’s full datasheet and confirm dimensions against your coil drawings.
- – Alternatives evaluated: compare against horizontal ring wrappers and turntable systems to confirm the eye-through orbital design is optimal for your wire coil geometry.
Safety
The FPW-300 line must be designed and operated in accordance with recognized safety standards:
- – EN 415-10 covers safety requirements for palletizing and wrapping machinery, including guarding of moving orbital rings, interlocked access points, and emergency stop provisions.
- – ISO 12100:2010 defines the risk assessment methodology — the process through which hazards such as rotating rings, pinch points, coil handling zones, and material feed points are identified and mitigated.
Operationally, ensure:
- – Perimeter guarding or safety distance is maintained around the orbital ring during the cycle.
- – Interlocks are never bypassed, and access doors stop the ring before opening.
- – Operators are trained on coil handling procedures, especially for crane- or forklift-loaded coils.
- – Film and paper feed points are only accessed with the machine isolated.
- – Routine checks of emergency stops, light barriers, and interlocks are logged.
Request the supplier’s risk assessment and confirm it addresses your specific coil handling method — this is where coil-specific hazards (e.g., coil slippage during loading) most often appear.
FAQ
Why an eye-through orbital wrapper instead of a turntable?
Eye-through orbital wrappers rotate a ring around the coil’s cross-section while the coil remains stationary. This is essential for wire coils where spinning a loosely wound coil on a turntable could cause layer slippage and deformation.
What materials can the FPW-300 wrap?
The machine handles PVC, LLDPE, PE, paper, and HDPE film or paper rolls with a 50 mm core, 100–250 mm OD, and 100–120 mm width. Overlap is programmable from 10% to 90%.
Can the line handle different coil sizes?
Yes — the FPW-300 accommodates coil OD 450–850 mm, ID 300–700 mm, and width 100–300 mm. Confirm your full coil matrix against the manufacturer’s datasheet.
How is film consumption controlled?
Through programmable overlap, number of passes, and pre-stretch settings. The engineering calculation above helps estimate consumption per coil and validate supplier figures.
Does the system include automatic strapping?
Yes — the FPW-300 line includes an integrated coiler and strapping station. The coil is formed, strapped, then wrapped in one continuous process.
What safety standards apply?
EN 415-10 (wrapping machinery safety) and ISO 12100:2010 (risk assessment). Request the supplier’s risk assessment documentation for your specific loading method.
Next Step
If wire coil packaging consistency, corrosion protection, or throughput is a current pain point, start by documenting your coil size matrix (OD, ID, width, weight) and target output (coils per hour). Then compare machine configurations — eye-through orbital wrapper, horizontal ring, or turntable system — against those numbers. For related wrapping technology, explore our automatic rotary arm pallet wrapping machine and packing machine, the FHPE R100 rotary arm pallet wrapper with film cutter, or the double rotary arm stretch wrapping machine. For a demonstration of the complete FPW-300 line, watch the video below.
!FPW-300 eye-through orbital coil wrapping machine in operation
Related Reading
- – Automatic Rotary Arm Pallet Wrapping Machine and Packing Machine — rotary arm wrapping for stable, heavy loads
- – FHPE R100 Rotary Arm Pallet Wrapper with Film Cutter — automatic film cut-and-clamp tail sealing in action
- – Double Rotary Arm Stretch Wrapping Machine — high-throughput wrapping for continuous production lines
