> **Executive summary**
>
> A PET wrapping machine packs rolls of PET strapping band in a spiral of film through the eye, so each roll ships clean, tight and protected from dust, sunlight and edge damage. Strap manufacturers ask for it because loose PET rolls unwind, collect dirt and get their edges crushed in transit. Our eye-through roll wrapper covers rolls of 300–700 mm ID, 500–1,000 mm OD, 100–300 mm wide and 10–100 kg in film or paper. Below: why rolls are wrapped, the cycle, the data and a worked example.
Table of Contents
- Why strap makers wrap PET rolls
- How a PET roll is wrapped
- Roll wrapper data
- Worked example: one PET strap roll
- Film or laminated paper
- Selection checklist
- Safety: EN 415-10 and ISO 12100
- Engineering FAQ
- Next step
- Related reading
- Sources
Why strap makers wrap PET rolls
A PET strap roll is a tightly wound band on a core. Unwrapped, the outer turns loosen, dust and grit settle between them, and the side faces get dented when rolls are stacked or dropped. A dented edge makes the strap feed badly in the customer's strapping tool, and dirt wears the tool's feed wheels.
A film wrap through the eye covers the outside, the inside and both faces. It holds the turns tight, keeps the roll clean and gives a neat, stackable pack with room for a label. This is why strap manufacturers ask us for a wrapper that covers each roll in film or laminated paper.
How a PET roll is wrapped
1. **Load.** The operator sets the strap roll on the machine with the wrapping ring through its eye.
2. **Start.** The film end is fixed to the roll and the cycle starts from the panel.
3. **Wrap.** The ring spirals clear film over the roll's cross-section while the roll turns, so the film covers it all round.
4. **Finish.** After the last turn the ring stops; the film is cut and the tail pressed down.
5. **Unload.** The wrapped roll is lifted off and stacked.
The machine sits on a blue base inside a yellow mesh fence. Overlap and film tension are set at the panel. Keep tension moderate on PET rolls: enough to hold the turns, not so much that the film pulls the side faces in or loads the core; an automatic cutter and feeder is an option.
Roll wrapper data
| Item | Value |
| :--- | :--- |
| Roll ID | 300–700 mm |
| Roll OD | 500–1,000 mm |
| Roll width | 100–300 mm |
| Roll weight | 10–100 kg |
| Cycle | 23–35 s per roll |
| Ring speed | up to 120 r/min |
| Overlap | 10%–90% |
| Wrap | stretch film; paper or HDPE optional |
| Film roll | OD 100–180 mm, core 50 mm, width 90–100 mm |
| Power | 1.9 kW |
These are the figures of our FPH-300N eye-through wrapper; for strap rolls outside this range the ring and rollers are built to your roll.
Worked example: one PET strap roll
Illustrative roll: 600 mm OD, 400 mm ID, 150 mm wide, 100 mm film at 50% overlap, so each ring turn advances 50 mm round the outside.
| Check | Calculation | Result |
| :--- | :--- | :--- |
| Outer circumference | π × 600 | ≈ 1,885 mm |
| Ring turns | 1,885 ÷ 50 | ≈ 38 |
| Time at 120 r/min | 38 ÷ 120 | ≈ 0.32 min ≈ 19 s |
| Radial wall | (600 − 400) ÷ 2 | 100 mm |
| Film per turn | 2 × (100 + 150) | 500 mm |
| Film per roll, relaxed | 38 × 0.5 | 19 m |
**Result.** About 19 s of wrapping and 19 m of film per roll, measured relaxed on the roll; actual payout from the reel is lower once the tension brake stretches the film; with loading and unloading, the page cycle of 23–35 s per roll is realistic.
Film or laminated paper
| Wrap | Strength |
| :--- | :--- |
| Clear stretch film | shows the strap colour and label; seals against dust |
| Laminated paper | printable, more rigid edge protection |
| HDPE | tough outer layer |
A logo tape option lays printed brand tape with the film.
Selection checklist
1. Roll ID (core), OD, width and weight.
2. Film, paper or HDPE, and logo tape.
3. Rolls per hour.
4. Manual or automatic cut.
5. Stacking or palletising after wrapping.
Safety: EN 415-10 and ISO 12100
Eye-through wrappers are built to EN 415-10, with the risk assessment done to ISO 12100. The hazards are the turning ring and the driven rollers. A mesh fence with warning signs surrounds the machine, and the ring is stopped before anyone reaches in to cut or press down the film.
Engineering FAQ
Q: Can it wrap PP strap rolls too?
A: Yes, any strap roll inside the size range.
Q: How long does one roll take?
A: 23–35 s, depending on size and overlap. With manual loading and cutting, the operator's load, cut and unload time is a large share of that; the automatic cutter and feeder option shortens it.
Q: Can the wrap carry our brand?
A: Yes, with the logo tape option.
Q: Paper instead of film?
A: Paper or HDPE are options. Laminated paper gives stiffer edge protection and a printable surface; film is cheaper and lets the buyer see the strap.
Next step
1. **Send roll sizes, weights and output** to info@fhopepack.com.
2. **We set** the ring, wrap and options.
3. **We reply within 24 hours** with a proposal and quotation.
Related reading
- [Hose coil wrapping machine FPH-300 (product)](https://www.fhopepack.com/Hose-packaging-machine/Hose-wrapping-machine-FPH-300.html)
- [How coil wrapping machine for hose/pipe coils packing](https://www.fhopepack.com/videos/coil-wrapping-machine-for-hose-pipe-coils/)
- [Wire coil wrapping machine](https://www.fhopepack.com/videos/wire-coil-wrapping-machine-2/)
- [Hose coil wrapping machine FPH-300](https://www.fhopepack.com/videos/hose-coil-wrapping-machine-fph-300/)
Sources
- FHOPE product page: eye-through wrapper FPH-300N
- FHOPE enquiry records on strap roll wrapping
- Our PET roll wrapping machine shown above
- Worked example: illustrative figures
- Standards: EN 415-10; ISO 12100:2010
Last reviewed: 2026-10-19
