Overview
Our coil packaging solution for slitting lines takes coils of 80–5,000 kg from a 40 t cross arm, down-ends them, straps with PET, wraps, weighs, labels and stacks them on a 6-station turntable — so several pallets build at once and one slit set’s coils go to different orders. This guide for slitting service centres plans a full slit set across straps, stacks and stations.
The video shows the demonstration line:
The packing problem after a slitter
A slitter delivers a whole set of narrow coils at once, often for several customers. Each coil needs straps, a protective wrap, a weight, a label, and a place on the right pallet. Manual handling by crane means slow lifts, mixed-up pallets and damaged edges; our line does it coil by coil, sorting onto pallets as it goes.
What the line does on the shop floor
A green down ender tilts a slit coil onto a yellow roller conveyor; the coil travels to the wrapping station, where an arm wraps it in white film beside a yellow mesh fence. Further along, an automatic unit marks it, then the coil runs to the end of the conveyor.
Modules from cross arm to turntable
Cross arm. The slit set goes on a rotating cross arm, 10 t per arm, 40 t total; it turns to present the next set.
Down ender. Takes one coil at a time off the arm and lays it on the conveyor.
PET strapper. Eye-through PET straps go on automatically at 3, 4 or 6 points, in a 15 s cycle.
Wrapper. Film, paper or woven fabric goes on through the eye for 360° protection.
Weighing and labelling. Net and gross weight are captured; a barcode label is applied.
Centring table, stacker and turntable. The coil is centred, picked by the stacker (electromagnetic or vacuum lifter) and set on one of six pallet stations.
System data
| Item | Value |
|---|---|
| Coil weight | 80–5,000 kg |
| Coil OD / ID | 750–1,400 mm / 508 mm |
| Cross arm | 10 t per arm, 40 t total, automatic rotation |
| Strapping | PET, 3, 4 or 6 straps, 15 s cycle |
| Wrapping media | stretch film, paper, VCI film, woven fabric |
| Stacking | stacking machine, 6-station turntable, centring table |
| Stack limits | up to 1,000 mm high with pallet; 3,000 kg per coil; 6,000 kg per stack |
| Controls | Profinet, ERP integration |
Why a 6-station turntable
A single stacking point must stop while a full pallet is removed. A six-station turntable keeps going: one pallet fills while another is discharged or set down, and each station can hold a different order — so coils of one slit set go straight to the right pallet, removing the usual restacking step.
Weighing, labels and ERP
Every coil is weighed on the line; net and gross weight go onto a barcode label. Over Profinet, the line receives order data and sends back weights, so the packing list matches what is actually on each pallet.
Worked example: one slit set from arm to pallets
A service centre slits a 1,200 mm OD, 508 mm ID master coil, 1,000 mm wide, into 8 strips of 120 mm plus 40 mm trim; five strips go to one order, three to another (illustrative figures).
Arm load. Cross-section π ÷ 4 × (1.2² − 0.508²) = 0.928 m², so the master coil weighs 0.928 × 1.0 × 7,850 = 7,285 kg — inside the 10 t per arm.
One strip. Each 120 mm coil weighs 0.928 × 0.12 × 7,850 = 874 kg, inside the 80–5,000 kg range; 8 coils weigh 6,992 kg, and 293 kg leaves as trim.
Strapping. At 4 straps × 15 s, that is 60 s per coil; with 3 straps, 45 s.
Stacks. The first order’s 5 coils weigh 4,370 kg and stand 600 mm; with a 150 mm pallet, 750 mm — within the 1,000 mm / 6,000 kg limits. The second order’s 3 coils use another station; one slit set uses two of six, so pallets for up to three slit sets can build at once.
General rule. Coils per stack = the smaller of 6,000 ÷ coil weight and (1,000 − pallet height) ÷ coil width.
Selection checklist: what to send us
- Master coil size/weight and strip widths.
- Orders per slit set.
- Strap material and count.
- Wrapping media.
- Pallet size and stack limits.
- ERP and label data.
- Specifications: FHOPE slitting coil line product pages (turntable stacker, slit coil packing).
- Machine video: our slit coil packaging line, embedded above.
- Worked example: illustrative coil figures for straps, stacks and stations.
- Standards: EN 415-10; ISO 12100:2010.
Safety
For CE markets we follow EN 415-10 as the reference, assessed to ISO 12100. The hazards are the rotating cross arm, the down ender, the strapping head, the wrapping ring, the stacker and the turntable. Fence and gate-interlock the line as on our demonstration line; keep operators out of the heavy-load zones during production.
Engineering FAQ
Can it handle copper and stainless coils? Yes — steel, copper and aluminium. Soft-touch contact parts (coated rollers, non-marking pads) are specified against the surface finish.
Why PET strap rather than steel? PET strapping runs automatically at 3, 4 or 6 points; tell us if customers require steel strap.
Can the line talk to our ERP? Yes — it integrates over Profinet for order data and weights.
Which standards do you build to? EN 415-10 as the CE reference, with an ISO 12100 assessment.
Next step
Email your coil range, slit layouts and pallet rules to info@fhopepack.com for a proposal with the line layout and turntable plan.
