Bottled water is one of the most demanding applications for PE shrink film. Products are heavy, packs are high-volume, and margins are thin — so every roll needs to run cleanly, look good, and protect the product through distribution.
Why Bottled Water Uses PE Shrink Film
Bottled water multipacks (6-pack, 12-pack, 24-pack) require film that:
- Holds heavy PET bottles securely through palletizing and transport
- Shrinks tightly in high-speed tunnels
- Performs on automatic bundling machines
- Costs less per pack than cardboard boxes
Recommended Thickness
| Pack Type | Bottle Size | Recommended Thickness |
|---|---|---|
| 6-pack | 500ml | 45-55 microns |
| 12-pack | 500ml | 50-65 microns |
| 24-pack | 500ml | 60-80 microns |
| 12-pack | 1.5L | 65-85 microns |
| 6-pack | 1.5L | 55-70 microns |
These are starting points. Exact thickness depends on your shrink tunnel temperature, conveyor speed, and bottle design.
Film Width
Film width depends on the bundle dimensions:
- Measure the circumference of the bundled bottles
- Add 20-40 mm for seal overlap and side fin
- The film should cover the bundle tightly without excessive overhang
For a standard 12-pack of 500ml bottles, typical film width is 380-450 mm in layflat format.
Shrink Requirements
Bottled water bundles need:
- TD shrinkage of 15-25% to hug the bottle sides
- MD shrinkage of 8-15% for tight top and bottom
- Shrink temperature of 150-180°C in the tunnel
Roll Length and Core
For high-speed bottling lines:
- Roll length: 1,500-3,000 meters to minimize changeovers
- Core: 3 inch (76 mm) standard
- Jointless rolls available for uninterrupted production
Common Problems in Bottled Water Packaging
Loose bundles after shrinking — Insufficient shrink ratio, tunnel temperature too low, or line speed too fast.
Film breaks on high-speed lines — Thickness inconsistency, weak film edges, or sharp product contact points.
Excessive side fins — Film width too wide for the bundle size.
Cloudy appearance — Film thickness too low or tunnel temperature too high causing over-shrink.
Quality Checklist for Water Film
- [ ] Clear, transparent appearance
- [ ] Consistent thickness across web
- [ ] Clean roll edges, no telescoping
- [ ] No odor or contamination
- [ ] Proper shrink at tunnel temperature
- [ ] Good seal strength
- [ ] Runs without breaks at production speed
Request a Sample for Your Line
Every bottling line is different. The best way to confirm a specification is to test a sample roll on your actual machine.
[Contact us](/contact/) with:
- Your bottle size and pack configuration
- Current film specification (if any)
- Shrink tunnel temperature and line speed
We will recommend the right PE shrink film and send a sample for evaluation.
