Macchina per l'imballaggio dell'alluminio: tecnologia e migliori pratiche

Sintesi

An aluminum packing machine has to protect a soft, bright, non-magnetic metal that marks easily and stains when moisture is trapped against it. For aluminum coils our horizontal eye-through wrapper lays the coil flat on a roller table, supports its full face and wraps it through the eye. The FPC-300 takes coils of 10–1,000 kg, OD 700–1,200 mm and width 10–300 mm, with a ring speed of 5–100 r/min.

On this line, a narrow coil lies flat on yellow rollers while the ring wraps it in white material through the eye. The wrapped coil then runs out on a powered roller conveyor past a label station, and finished coils are placed on wooden bearers.

Sommario

Why aluminum needs different packing

Aluminum differs from steel in four ways that change the packing machine.

Proprietà Effect on packing Machine answer
Superficie morbida Rollers, clamps and forks leave marks Coil supported flat; covered rollers and friction wheels
Finitura lucida Scratches and fingerprints are visible defects Wrap applied without hand contact
Non magnetico Magnet heads cannot lift or stack it Vacuum head or gripper arm for stacking
Light for its size More coils per pallet for the same weight Stacking pattern set by height, not only weight

Trapped moisture is the other risk. Water held between turns or under a loose wrap leaves stains on the surface. A tight, fully overlapped wrap applied to a dry coil keeps moisture out.

The technology: horizontal eye-through wrapping

The coil lies flat, eye-vertical, on a roller table. The ring passes through the eye and turns, laying film, paper or woven belt around the coil section, while the rollers turn the coil so each pass covers the next band. Ring height adjusts automatically or manually to the coil OD, and the ring runs on polyurethane friction wheels.

Lying flat matters for aluminum. The full bottom face is supported, so a thin, narrow coil does not bend or deform while it turns. The same horizontal design wraps strip as narrow as 8 mm.

Best practices for aluminum coils

  1. Wrap dry. Pack only dry coils, so no water is sealed in.
  2. Overlap fully. Set the overlap so there are no gaps at the outer face, where bands spread furthest apart.
  3. Seal the tail. Automatic tail sealing by tape or heat leaves no loose end to catch and tear.
  4. Tape the OD. Automatic taping round the coil OD holds the outer turn before wrapping.
  5. Stack without magnets. Use a vacuum head or gripper arm, and place coils on bearers so forks do not touch the metal.

FPC-300 data

Articolo FPC-300
peso della bobina 10-1,000 kg
Larghezza della bobina 10–300 mm
coil OD 700–1,200 mm
coil ID 400–900 mm
OD meno ID <600 mm
Velocità del rullo 2–4 metri/min
Velocità dell'anello 5–100 giri/min
Alimentazione 380 V 50/60 Hz trifase
Materiale woven belt, paper, stretch film; roll ID 50/76 mm, OD 150–450 mm, width 90–120 mm

Worked example: an aluminum slit coil

Take an aluminum coil with OD 1,000 mm, ID 508 mm and width 200 mm, wrapped with 100 mm film at 50% overlap. Aluminum density is 2,700 kg/m³.

step Calcolo Risultato
Area del viso π/4 × (1.0² − 0.508²) 0.583 m²
Volume 0.583 × 0.20 0.117 m³
Aluminum weight 0.117 × 2,700 circa 315 kg
Same coil in steel 0.117 × 7,850 circa 915 kg
Fits FPC-300? 10–1,000 kg; OD 700–1,200; ID 400–900; OD − ID = 492 < 600 sì
circonferenza esterna π × 1,000 circa 3,142 millimetri
L'anello gira 3,142 50 ÷ circa 63
Coil surface speed at 60 r/min 50 mm × 60 3 m/min, inside 2–4 m/min
Tempo di confezionamento 63 60 ÷ circa 63 s

Uscita di linea. On a complete slit coil line with wrapping, labelling and stacking, our rating is 20–40 coils per hour for narrow coils, so the 63 s wrap fits inside a 90–180 s line cycle. The label is printed and applied on the exit conveyor before stacking.

Risultato. The aluminum coil weighs about a third of the same steel coil, so a pallet carries more coils before reaching its weight limit. The ring and roller speeds both sit inside the FPC-300 ranges at 60 r/min.

Lista di controllo per la selezione

  1. Alloy, temper and surface finish.
  2. Peso della bobina, diametro esterno, diametro interno e larghezza.
  3. Wrap material: stretch film, paper or woven belt.
  4. Taping, tail sealing and labelling needs.
  5. Stacking method and pallet or bearer layout.
  6. Coils per hour and line connections.

Sicurezza: EN 415-10 e ISO 12100

The coil wrapper and its line integration are built to EN 415-10, the general safety requirements for packaging machines, with the risk assessment done to ISO 12100. Guard fencing closes the ring zone, and coils are positioned before the cycle starts.

FAQ di ingegneria

Q: Why not stand the aluminum coil upright to wrap it? A: An upright coil rests on a short arc of the rollers. A flat coil is supported over its full face, so a soft or narrow coil does not deform.

Q: Can magnets stack aluminum coils? A: No. Aluminum is not magnetic, so we use a vacuum head or a gripper arm.

Q: Is the film tail sealed automatically? A: Yes, by taping or heat sealing after wrapping.

Q: What coil range does the FPC-300 take? A: 10–1,000 kg, OD 700–1,200 mm, ID 400–900 mm and width 10–300 mm.

Passo successivo

  1. Send your aluminum coil sizes and surface finish a info@fhopepack.com.
  2. Noi combiniamo the wrapper, stacking and labelling.
  3. Rispondiamo entro 24 ore con una proposta e un preventivo.

fonti

  • FHOPE product pages: horizontal coil wrapper FPC-300; slit coil handling and packaging line
  • FHOPE engineering replies on coil stacking methods
  • EN 415-10; ISO 12100:2010

Ultimo aggiornamento: 19/10/2026

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