Executive summary A protective film application machine presses a self-adhesive film onto the face of a flat sheet as the sheet passes between rollers. Our machine does this in one pass on a roller conveyor, so each sheet leaves with its face covered and ready to stack. The film width follows from the sheet width, and the roll yield from the sheet length. Both are set per project to your sheet.
Table of Contents
- What the video shows
- How sheet film application works
- Sizing the film width
- Working out roll yield
- Controls and safety
- Selection checklist for a sheet film applicator
- Engineering FAQ
- Next step
- Related reading
- Sources
What the video shows
A white rectangular sheet lies flat on the infeed of our blue and white laminator, with an operator standing at the side. The sheet is carried forward under a green roll of protective film. As it passes through the rollers, the green film is pressed onto its top face.
The film goes on continuously from the front edge to the back edge. Red air lines run to the roller section. The covered sheet then leaves at the far end, flat and fully covered in green film.
How sheet film application works
| Step | What happens |
|---|---|
| Infeed | The sheet is laid flat on the infeed and carried forward |
| Film feed | Film unwinds from the roll above the sheet |
| Nip | A pair of rollers presses the film onto the sheet face |
| Separation | The film is parted between one sheet and the next |
| Discharge | The covered sheet leaves on the outfeed |
The pressure at the nip is what makes the film stick evenly. Too little pressure leaves air bubbles, and too much can mark a soft surface. Set it by trial on your sheet and film.
Sizing the film width
The film is usually a little wider than the sheet, so the edges are fully covered and can be trimmed. Illustrative example for a 1,220 mm wide sheet with 10 mm left at each edge:
| Item | Value |
|---|---|
| Sheet width | 1,220 mm |
| Edge allowance, 2 × 10 mm | 20 mm |
| Film width, 1,220 + 20 | 1,240 mm |
Some users prefer the film slightly narrower than the sheet, so no film hangs over the edge. Tell us which you need when you send your sheet sizes.
Working out roll yield
Each sheet uses its own length of film. Illustrative example for 2,440 mm long sheets and a 500 m roll:
| Item | Value |
|---|---|
| Sheet length | 2,440 mm |
| Roll length (illustrative) | 500 m |
| Sheets per roll, 500 ÷ 2.44 | about 204 |
| Film per sheet, 1.24 m × 2.44 m | about 3.0 m² |
A longer roll means fewer roll changes per shift. Count the roll change time when you plan output.
Controls and safety
The nip rollers are the main hazard: fingers can be drawn in with the sheet. Keep hands clear of the nip while the machine runs, and stop it before you clear a jam or thread a new roll.
The standards that apply depend on the destination market. For CE markets, ISO 12100 sets the risk-assessment method and EN 415-10 sets general requirements for packaging machines.
Selection checklist for a sheet film applicator
- Sheet width, length and thickness, smallest to largest.
- Sheet material and surface finish.
- Film on one face or both faces.
- Film type and roll size you use now.
- Sheets per hour.
- How sheets reach the infeed and leave the outfeed.
Engineering FAQ
Q: What sheets suit this machine? A: Flat sheets that can lie on the conveyor, such as plastic, composite or metal sheet. The video shows white sheets covered with green film.
Q: How wide should the film be? A: About the sheet width plus a small edge allowance. Our 1,220 mm example uses 1,240 mm film.
Q: How many sheets does a roll cover? A: The roll length divided by the sheet length. Our example gives about 204 sheets from a 500 m roll.
Q: Why do air bubbles appear? A: Usually the nip pressure is too low or the film tension is uneven. Adjust both by trial on your sheet.
Q: Can it cover both faces? A: A second film roll can be added for the lower face. Tell us if you need it.
Next step
We plan your sheet film applicator in three steps:
- Submit your layout drawing with sheet sizes and output to info@fhopepack.com.
- Receive a proposal within 48 hours, with the film width and roll plan.
- Book a site survey to check the infeed and outfeed layout.
Related reading
- Video: protective foil application machine on sheet
- Video: automatic cutting of film covering machine on sheets
- Automatic strapping machines
Sources
- Machine content: FHOPE engineering team, 2026-10-04
- Film width and roll yield: our worked examples, illustrative values
- Machine in action: our video on YouTube
- Standards scope: ISO 12100:2010, EN 415-10:2014
Last reviewed: 2026-10-04
