| Types | Shrink wrap, wrap-around carton, carton packing, tray |
| Rate | Matched to the filler; usually the line bottleneck |
| Key control | Film tension, seal temperature, case squareness |
| Contact material | PE film, corrugated board, tray board |
| Key decision | Shrink, carton or tray |
| Line position | After labelling, before palletizing |
Shrink wrap is the cheapest per case and the fastest, and it suits retail where the pack is the display unit. A wrap-around carton gives print area and stack strength for distribution. A tray with shrink is a compromise used where the pack needs both protection and visibility.
When the market needs print on the case, when the pack has to stack high in a warehouse, or when the product is sold through distribution rather than direct to retail. A carton costs more per case, and it protects the bottles and carries the brand where shrink film cannot.
| Pack format | Cost per case | What it protects |
|---|---|---|
| Shrink wrap | Lowest | Retail display, short distribution |
| Tray + shrink | Middle | Stacking and visibility |
| Wrap-around carton | Higher | Print area and long distribution |
| Regular slotted carton | Highest board use | Fragile packs and export |
Site requirements, air and power consumption sit with the Wrap-round Film Shrink Wrapping.
From the pack footprint plus the wrap allowance and the tunnel shrinkage. A film that is too narrow leaves the base exposed; too wide and the pack gets a double layer at the seam. Width is a per-format setting, like the lane guides.
The unit behind this configuration is the Carton Packing.
Consistent board thickness, a stable score line and a flat stack. A board that varies in caliper jams the magazine and produces wonky cases. The packer is set for one board specification, and a cheaper board is not a saving.
The same question is worked through from another angle in How Palletizers Streamline Packaging in High-Speed Lines.
At 24 bottles per case, 1,000 cases per hour. The packer, the palletizer and the label supply all have to carry that number, and the line rating is the lowest of them.
With different lane guides and a film width change, yes. The changeover is mechanical on a semi-automatic packer, so a plant selling both formats usually accepts a scheduled stop between runs.
It is rated in packs or cases per hour and must exceed the filler output in cases. The limiting factor is normally the tunnel dwell time, not the wrapping speed.
Too much heat, too little tension, or a film that is too thin for the pack weight. A pack that sags after cooling was sealed outside its window.
Country:Kazakhstan
Product: PET Bottled Sparkling Water, Canned Soft Drink, Canned Tea
Capacity: 25000CPH (250ml)
Solution:Three Lines,7000BPH(1.5L), 15000CPH(330ml),15000CPH(450ml)
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