Sintesi
Paper rolls are heavy and round, and moisture, dust and crushed ends ruin them in storage and transit.
Our paper roll wrapper lays the roll on a turntable with powered cradle rollers. The table turns while the rollers spin the roll, so stretch film covers the body and both ends. This page covers how it works, a film-use check and what to send us for a quote.
The machine is a large low turntable with a pair of cradle rollers set into its deck, and a film carriage on a vertical mast beside it. The roll lies on its side across the rollers. As the turntable rotates, film from the mast wraps over the roll and its two ends.
At the same time the cradle rollers turn the roll on its own axis. Each pass lands in a new position until the whole roll is sealed in film.
Sommario
- Perché i rotoli di carta sono difficili da proteggere
- How the roll wrapper works
- Punti di progettazione
- Turntable clearance and wrap indexing
- Lista di controllo per la selezione
- Sicurezza
- FAQ di ingegneria
- Passo successivo
- Lettura correlata
- fonti
Perché i rotoli di carta sono difficili da proteggere
Paper takes up moisture from the air, and the outer layers and edges absorb it first. A wet edge cockles and breaks on the printing press or converter. The ends are also where clamp trucks and stacking cause damage. A wrap that covers only the body leaves both weak points open.
Wrapping the roll lying down, with the ends covered, closes the roll against dust and humidity and holds the outer layers so the tail cannot unwind.
How the roll wrapper works
- Caricare: a forklift or crane sets the roll across the cradle rollers on the turntable.
- Inizio: the operator fixes the film tail to the roll and starts the cycle from the panel; tail clamping and cutting can be manual or automatic, confirmed at quote.
- Avvolgere: the turntable turns, and the film from the mast passes over the roll body and both ends.
- Indice: the cradle rollers spin the roll slowly, so the next pass overlaps the last one.
- Fine: after the set number of turns, the film is cut and the tail wiped down.
- Scaricare: the wrapped roll is lifted off; a capovolgitore di rotoli di carta can stand it on end for storage.
Punti di progettazione
- Two motions: turntable rotation and roller spin together give full coverage, ends included, without a person walking the film round.
- Trasporto della pellicola: a powered pre-stretch carriage on the mast sets film tension; the height is set for the roll diameter.
- Low deck: the low turntable makes loading by forklift or crane easy.
- Velocità del rullo: roller speed against table speed sets the overlap; heavier overlap is used for export rolls.
- ricette: turns, overlap and film tension are stored per roll size on the panel.
Turntable diameter, roll weight and size range, and wrapping time are matched to your rolls and confirmed at quote.
Turntable clearance and wrap indexing
Check: the roll must turn inside the table without hitting the mast. Roll length L and diameter D: diagonal √(L² + D²) + clearance ≤ turntable working diameter.
Solo a titolo di esempio:
| Articolo | Valore (esempio) |
|---|---|
| Roll diameter D | 1,000 mm |
| Roll width (length) L | 1,500 mm |
| Diagonal √(1,500² + 1,000²) | 1,803 mm |
| Clearance to mast | circa 200 millimetri |
| Working diameter needed | circa 2,000 millimetri |
| Larghezza del film | 500 mm |
| sovrapposizione | 50% |
| Advance per pass | 250 mm |
| Roll circumference π × D | 3,142 mm |
| Passes for full coverage | 3,142 ÷ 250 ≈ 13 |
Film length (estimate) = film needed per pass ÷ pre-stretch ratio × passes × layers. The real film use and cycle time are confirmed at quote.
Lista di controllo per la selezione
- Roll diameter, width and weight range?
- Rolls per hour?
- Body only, or body and both ends?
- Number of film layers and film type?
- Loading by forklift, clamp truck or crane?
- Inline with conveyors, or standalone?
- Power supply at the site?
Sicurezza
We design roll wrappers to EN ISO 12100:2010 for risk assessment, EN 415-10 for packaging machine safety and EN 60204-1 for electrical equipment. The turntable zone is fenced or watched by sensors, and an E-stop is on the panel.
FAQ di ingegneria
Q: Does it wrap the roll ends? A: Yes. Film crosses the ends on every turntable turn while the rollers index the roll.
Q: Can it wrap rolls standing on end? A: This design wraps rolls lying down. Rolls on end are wrapped on a turntable wrapper with a top sheet.
Q: Will the film mark the paper? A: No. Stretch film clings to itself and leaves no residue on the paper.
Q: Can one machine run several roll sizes? A: Yes, within its range, by recipe on the panel.
Passo successivo
- Send your roll sizes, weights and output a info@fhopepack.com.
- Noi misuriamo the turntable, rollers and film carriage.
- Rispondiamo entro 24 ore con una proposta e un preventivo.
Lettura correlata
- FHOPE packaging machine catalog
- Paper roll upender and tilter (video)
- Fabric roll stretch wrapping machine (video)
fonti
- FHOPE paper roll wrapper shown above
- EN ISO 12100:2010; EN 415-10; EN60204-1
- Geometry: diagonal and circumference checks
Ultimo aggiornamento: 20/10/2026
