Executive summary
What kind of stretch film fits a coil package depends on how the coil is wrapped: the film must hold to the annular coil edge, resist punctures from its sharp edges, and stay stable in storage and transit. A coil packing machine applies the film automatically as the coil rotates, so film width and grade suit the coil size and the wrap plan. Film choice is confirmed per project. This guide sets out how FHOPE matches film to the coil.
Table of Contents
- Why coil film matters
- How the film is applied
- Film width and grade for coils
- Wrap pass and overlap plan
- What the footage shows
- Typical configuration
- Selection checklist
- Operation and safety
- Engineering FAQ
- Next step
- Related reading
- Sources and standards
Why coil film matters
Coils are heavy annular metal rolls, and their edges are sharp enough to cut a thin film. The film around a coil has to stretch over the outer edge, cling to the surface, and resist puncture when the coil is handled or stacked.
The right film keeps dust and moisture from the metal while the package stays intact through storage and sea freight. The film grade is confirmed per project.
How the film is applied
A coil wrapping machine applies the film automatically: a film-carrying arm lowers over the coil, the coil rotates on the conveyor, and film unwinds around the outer edge in even passes.
Because the machine controls the motion, the film tension and the number of layers stay consistent from coil to coil. Coil size and wrap profile are confirmed per project.
Film width and grade for coils
Film width should cover the coil edge in the planned number of wraps, so wider coils need wider film or more passes. The film grade, in turn, balances cling, stretch and puncture resistance for the coil edge.
Film width, thickness and grade are all confirmed per project with the coil dimensions you send.
Wrap pass and overlap plan
The wrap plan defines how many times the film passes around the coil and how far each pass overlaps the previous one. More passes add protection and use more film; the right setting depends on how far the coil travels and how it is handled.
Wrap passes and overlap are confirmed per project with the coil and route details.
What the footage shows
Our footage shows a flat annular metal coil on a roller conveyor at the wrap station of an automatic coil wrapping machine. A film-carrying arm lowers from above while the coil rotates, and stretch film is laid over the coil edge in even passes, after which the wrapped coil moves downstream.
A mesh safety fence encloses the moving parts, and a control cabinet sits at the side of the line. It is a general demonstration, so your coil size, film grade and wrap plan are confirmed with us per project.
Typical configuration
Figures below list functional design boundaries rather than numeric values, and are confirmed per project.
| Parameter | Typical range, confirmed per project |
|---|---|
| Load | flat annular metal coil on the wrapping conveyor |
| Coil geometry | outer diameter and width in mm, center eye size |
| Film apply | arm lowers and lays film over the coil edge |
| Film | stretch film grade, width and gauge |
| Wrap | passes around the coil and overlap per pass |
| Rotation | coil rotates on the conveyor during wrapping |
| Transfer | downstream conveyor for the wrapped coil |
| Electrical supply | 380 V three phase 50 Hz, or 220 V single phase for light machines, selected per project |
Selection checklist
| Question | Confirm per project |
|---|---|
| Film purpose | dust and moisture protection, or rust protection with VCI grade film |
| Coil size | outer diameter, width and eye size of the coil |
| Film width | width matched to the coil edge and wrap plan |
| Wrap passes | number of passes around the coil and overlap |
| Handling | storage indoors or outside, distance of transit |
| Electrical supply | voltage, phase and frequency on site |
Operation and safety
Load a coil on the wrapping conveyor, set the film roll on the arm, and start the cycle so the coil is wrapped before it moves downstream. Keep clear of the arm travel, the rotating coil and the film reel while the machine runs.
Routine checks cover the film feed, the tension unit and the safety fence, per the machine manual. Confirm the coil is centered and the film roll is seated before each wrap.
Engineering FAQ
Q: Why does a coil need stretch film at all? A: The film holds dust and moisture off the metal edge and keeps the package intact through handling and transit.
Q: What stretch film suits a coil? A: The film needs stretch, cling and puncture resistance over the sharp coil edge; the grade is selected per project.
Q: Does the film protect against rust? A: Standard film gives dust and moisture protection; a VCI grade can add rust protection, selected per project for your transit and climate.
Q: How is the film applied to the coil? A: An arm carries the film over the coil, and the coil rotates so film lays over the edge in even passes.
Q: What electrical supply does it need? A: The machine runs on 380 V three phase 50 Hz as standard, and light machines can be arranged for 220 V single phase, selected per project.
Next step
- Email us at info@fhopepack.com with your coil size and shipping distance.
- We send a film and wrap proposal within 48 hours.
- We confirm the film grade, width and wrap passes for your coils.
Related reading
- What Kind Of Stretch Film Fit For Coil Packing
- Steel Coil and Copper Coil Packaging Machine for Eye-Through Film Wrapping
- Steel Coil Packing with Paper and Stretch Film: Eye-Through Wrap, Eye Up
- FHOPE packing machinery product lines
Sources and standards
- ISO 12100:2010 Safety of machinery, general principles for design and risk assessment
- EN 415-10:2014 Safety of packaging machines, general requirements
- EN ISO 13849-1:2023 Safety of machinery, safety-related parts of control systems
FHOPE coil film wrapping demonstration video. Reviewed as a general demonstration; coil size, film grade and wrap passes confirmed per project.
Last reviewed: 2026-10-12
