Olive Oil Bottling: Specialised Requirements
Olive oil — particularly extra virgin olive oil (EVOO) — is a high-value, viscous, and oxidation-sensitive product that demands specialised bottling equipment. Unlike water or carbonated beverages, olive oil filling requires volumetric or mass flow measurement for accuracy, materials compatible with edible oils, and packaging that protects against light and oxygen.
The olive oil industry is highly seasonal, with production concentrated in the 3–4 months following harvest (October–January in the Northern Hemisphere). This seasonality makes used equipment particularly attractive, as machines may accumulate relatively few running hours per year despite their calendar age.
Filling Technology for Olive Oil
Volumetric Piston Fillers
Piston fillers are the traditional choice for olive oil. Each filling cycle draws a precise volume through a cylinder and piston mechanism. Used piston fillers from manufacturers such as Bertolaso, Enoberg, Fimer, Perrier, and MBF are widely available. Key evaluation points: piston seal condition, cylinder bore wear, and check valve functionality.
Mass Flow Fillers
Modern mass flow (weight-based) fillers use load cells or Coriolis meters to fill by weight rather than volume. This provides consistent accuracy regardless of temperature-related viscosity changes. Manufacturers including Krones, KHS, and Serac offer these systems. Used mass flow fillers are regularly available but deliver better filling consistency.
Gravity and Overflow Fillers
For standard olive oil grades (not EVOO), gravity fillers with heated product tanks can be used. The oil is heated to 25–30°C to reduce viscosity and improve flow characteristics. Overflow fillers provide consistent cosmetic fill levels but are less common for oil due to the cleaning challenges of oil residue in overflow return circuits.
Container Options for Olive Oil
Olive oil is packaged in various container types, each requiring different equipment configurations:
- Glass bottles (250ml–1L): Premium positioning, requires careful handling. Dark glass preferred for light protection
- PET bottles (500ml–5L): Lightweight, lower cost, but limited oxygen barrier without special coatings
- Tin cans (1L–5L): Excellent light and oxygen protection, traditional in Mediterranean markets
- Bag-in-box (3L–20L): Growing segment for food service and bulk retail
- Stainless steel containers: Premium and speciality market
What Oil Producers Search For
- Used olive oil filling machine — volumetric or weight-based filler for edible oils
- Used oil bottling line — complete line for olive oil, sunflower oil, or seed oils
- Used edible oil capping machine — screw capper for oil bottle closures
- Used oil labelling machine — front-back labeller for oil bottles
- Used tin can filling machine for oil — can filling and seaming for oil
- Used bag-in-box filling machine — aseptic or standard BIB filler for oils
- Used oil filtration equipment — plate filter, cartridge filter for olive oil
- Used stainless steel tanks for oil storage — food-grade oil storage vessels
Material Compatibility and Cleaning
Oil residue is notoriously difficult to clean from equipment surfaces. All product-contact materials must be oil-compatible: PTFE or EPDM gaskets (not silicone, which can absorb oil), stainless steel AISI 304 or 316L for all wetted parts, and CIP systems capable of removing oil films with appropriate alkaline detergents at elevated temperatures. When evaluating used oil filling equipment, inspect for oil residue in dead legs, gasket deterioration, and CIP system effectiveness.
Frequently asked questions
How much does a used olive oil filling line cost?
Small used olive oil filling lines (500–1,500 BPH) typically cost €25,000–€60,000. Medium lines (2,000–4,000 BPH) range from €60,000–€150,000. Prices depend heavily on filling technology (piston vs mass flow), condition, and included format parts.
Can I use the same filling machine for olive oil and vinegar?
Generally no without modifications. While both are liquids, vinegar is highly acidic and corrosive, requiring acid-resistant materials (316L stainless steel, PTFE gaskets). An oil filler may work for vinegar if all product-contact materials are verified as acid-compatible, but dedicated lines are recommended.
What filling accuracy should I expect for olive oil?
Modern piston fillers achieve ±0.5–1% accuracy by volume. Mass flow fillers achieve ±0.2–0.5% by weight. For regulatory compliance and cost control, accuracy within ±1% is generally acceptable for commercial olive oil production.
Do I need special equipment for extra virgin olive oil?
EVOO requires the same filling equipment as standard olive oil, but with additional attention to oxygen management (nitrogen blanketing of tanks and headspace), temperature control (filling below 25°C to preserve polyphenols), and clean-in-place procedures to prevent flavour carryover.