UHT Milk Processing Line
A UHT milk line built for ambient shelf life, where steriliser design, aseptic filling and CIP validation together decide whether the product reaches nine months.
Key Specifications
| Capacity | 2,000 / 5,000 / 10,000 / 20,000 L per hour |
|---|---|
| Sterilisation | 135-150 degrees C for 2-5 seconds |
| Steriliser type | Tubular (standard) or plate for low-viscosity |
| Shelf life | 6-9 months at ambient |
| Aseptic filling | Tetra-style carton, bottle or pouch |
| Heat recovery | Up to 90 percent on tubular units |
| CIP | Validated aseptic CIP with sterility test points |
Why tubular beats plate above a certain viscosity
Plate sterilisers are compact and recover heat well, but they foul quickly on high-protein milk and cannot handle viscosity above about 200 cP. Tubular units tolerate fouling longer and handle milk with added cream or stabiliser, which is why they dominate UHT milk lines.
The steriliser is only half of aseptic
Aseptic filling and the aseptic buffer between steriliser and filler decide whether the product stays sterile. A perfect steriliser feeding a filler that draws in air at the seam produces spoiled packs at the end of shelf life, not at the start, which is the worst failure mode.
CIP validation
Aseptic lines require documented CIP with temperature, flow and concentration records, plus periodic sterility trials. This is the part most often underestimated in project planning.
Typical Applications
- Milk for warm-climate distribution — Where cold chain cannot be guaranteed to retail, UHT is the only route to six months or more.
- Export markets — Ambient stable milk avoids reefer containers and cuts freight cost per litre substantially.
- Flavoured and fortified milk — Tubular sterilisers handle added stabilisers and cocoa that would foul a plate unit.
Related Equipment
Frequently Asked Questions
What capacity should I start with?
5,000 L per hour is the common entry point for a regional dairy; below 2,000 L per hour the aseptic line cost per litre rises steeply.
Does UHT change the taste?
Some cooked note is unavoidable at 135-150 degrees C. Indirect tubular sterilisation with high heat recovery minimises it compared with direct steam injection.
What is the shelf life?
Six to nine months at ambient, provided the package is aseptic and undamaged.
Explore more: All Products · Industry News. Ready to discuss your project? Request a quote.