| 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 |
| Wetted parts | 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.
A filler is rated on bottles per hour at a steady state; a packer is rated on cases per hour including film roll changes, seal cooling and pattern changes. Buyers compare the filler rating and forget that a packer rated below it sets the line rating for the whole shift.
| 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 |
Rated output, change parts and services are listed on the Wrap-round Film Shrink Wrapping page.
In cases per hour, at the same format, with margin for film changes and seal cooling. A packer rated below the filler sets the line rating, and the shortfall appears as bottles accumulating before the packer rather than as a machine fault.
Reference unit for this duty: the Carton Packing.
It reaches the pallet, the film width and the truck. A pattern that does not fit the pallet footprint wastes cube, and a pattern that does not match the retail unit costs the customer a repack. Pattern is a commercial decision as much as an engineering one.
The same question is worked through from another angle in How Palletizers Improve High-Speed Packaging.
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.
Usually insufficient wrap around the base or a seal that opened. Check the film width, the lap position and the seal temperature together, because changing one alone moves the failure elsewhere.
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.
Not without a change of the packing module. Shrink and wrap-around carton are different machines with different board or film paths, so a plant running both normally has two packers.
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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