How Volumetric Fillers Maintain Consistency in Juice Bottling

Views: 1568 Author: Howie SUN Publish Time:
Juice is a product-first decision: acidity, pulp and heat sensitivity choose the filling temperature, and the temperature chooses the bottle.
Key facts at a glance
Filling systemHot-fill, up to 85 C
Rated output6,000-36,000 BPH at 0.2-2 L
PackageHeat-resistant PET geometry, or glass
LineHot-fill monobloc with tunnel pasteuriser
ProductsJuice, tea, nectar, functional drinks
Key controlFill temperature, hold time, cap seal

What breaks first on a hot-fill line?

Cap seals and filling valve O-rings, because they see the highest temperature every cycle. A seal that is fine on a water line at 20 C will harden in weeks at 85 C. The spare parts list should carry those two items in proportion to the number of valves, not as a single set.

How do you compare a hot-fill line with a cold-fill line?

Compare them on the product, not on the machine. Hot fill suits acidic juice and tea in heat-resistant PET. Cold fill needs a preservative system or a separate sanitising step, but it protects heat-sensitive flavours and vitamins and uses a lighter bottle. The decision is a product decision with a packaging cost attached.

RouteTemperatureWhat it costs
Hot fillUp to 85 CHeat-resistant bottle and a cooling tunnel
Cold fill with preservativeAmbientFormulation constraint, not a machine constraint
Cold fill with in-line pasteuriserProduct-side onlySeparate pasteuriser and a closed filling zone
Hot fill in glassUp to 85 CGlass mass, slower line, higher transport cost

Rated output, change parts and services are listed on the Juice By Volumetric Filler page.

What does a tea line need that a juice line does not?

Tea usually needs finer filtration, deaeration to protect aroma, and a fill temperature that does not strip the volatile notes. Tea also clouds after cooling, so the clarification step is part of the product design, not a filling detail.

Rated output, change parts and services are listed on the Hotfill Type Filling Machine for Juice page.

What does a glass juice line change?

Glass brings mass, breakage and a slower line. It also brings a closure decision: crown, lug or screw. A glass hot-fill line usually runs at a lower rate than the same filler on PET, and the difference is handling and inspection, not the valve.

The same question is worked through from another angle in How to Troubleshoot Volumetric Fillers for Pulpy Juice.

How to read the numbers. The capacity tab on the specification sheet gives ranges; treat them as such. Pasteuriser heat-up, hold and cooling sit outside a rated BPH, so plan on 0.65-0.85.

Frequently asked questions

What temperature is juice hot-filled at?

Up to 85 C, set per product and per bottle. The exact set point and tolerance belong in the product specification, because acidity, pulp content and bottle wall thickness all move it.

Why does the bottle panel after filling?

Usually fill temperature above the bottle rating, or a vacuum that forms as the product cools. Check the fill temperature against the bottle specification and the cap seal before changing the cooling profile.

Can one line run juice and tea?

Yes, if the filler, the recipe and the downstream cooling are specified for both. Tea usually needs a finer filtration step and a different deaeration setting, so the changeover is a recipe and filter change, not just a new label.

Can a hot-fill line run clear juice and pulp juice?

With a filter change and a different valve bore for the pulp, yes. Clear juice needs finer filtration, and pulp needs agitation in the bowl so the fibre does not settle.

Key takeaways
  1. Fill temperature is a product and package number, not a machine setting.
  2. Pulp needs bore and agitation, not more pressure.
  3. Cold filling moves the microbial control from the filler to the product and the plant.
  4. Colour loss is a temperature and hold-time decision.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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