Why choose Flottweg equipment for the production of natural unfiltered juices?

Article

Insights

April 4, 2025 / 3 min read time

Obtaining high-quality unfiltered juices requires precise control at every stage of production – from pulp extraction to the separation of fine solids. In addition, juice producers must find the balance between consumer expectations, operational requirements, and profitability markers. In this context, choosing efficient equipment plays an essential role in optimizing production lines for natural juices.

 

Flottweg, one of the most renowned manufacturers of mechanical separation equipment globally, offers modern solutions for the extraction, separation, and clarification of fruit juices, in order to preserve natural fibers, flavors, and colors.

 

 

What differentiates unfiltered fruit juice from filtered juice?

 

Unfiltered fruit juices are gaining more and more ground on the market, being perceived by consumers as “natural” products, less processed and with superior nutritional benefits. These juices retain part of the fruit’s fine pulp, contain soluble and insoluble dietary fiber, polyphenols, vitamins, and volatile compounds responsible for flavor and taste.

 

Unlike clear juices, where full clarification and visual stability are priorities, unfiltered juices require a balanced technical approach: they must retain the desired turbidity, avoid instability over time (sediment, stratification), be nutritious, microbiologically stable, and comply with strict hygiene and safety requirements from the food industry.

 

This is where the essential role of mechanical separation equipment comes in – presses, decanters, separators – which must ensure:

 

  • Delicate extraction: to avoid emulsifying the pulp or oxidizing volatile compounds.
  • Controlled separation: to maintain the pulp content within a stable range, without the product becoming unstably turbid.
  • Hygienic and energy-efficient operation, in a continuous and easy-to-clean flow (integrated CIP systems).

 

In addition, unfiltered juices are more perishable and more sensitive to fermentation or contamination, which makes hygiene and processing speed critical. That is why the natural juice production equipment brought to the market by Flottweg is built in closed systems, with hygienic design and automatic cleaning, minimizing risks and increasing the shelf life of the product.

 

 

The Flottweg trifecta for unfiltered juice production

 

Flottweg solutions are designed precisely with these requirements in mind. For example, a decanter centrifuge with adjustable impeller can adapt in real time the depth of the liquid layer depending on the consistency of the fruit pulp, maintaining the desired balance between the liquid and solid phase. In parallel, self-cleaning separators finely control the content of fine particles that could affect the juice’s stability or appearance, avoiding the need for additional filtration.

 

  • Belt press – ideal for the primary extraction of juice from pulp-rich fruits (apples, pears, carrots), with gentle pressing and high yield. It delivers a dry pomace and a juice rich in flavor, without emulsions or coarse impurities.
  • Centrifugal decanters – perfect for the separation of fine particles, including post-extraction, or for processing juices from soft or tropical fruits. They allow automatic adjustment of the process based on the consistency of the mash, maintaining an optimal level of pulp.
  • Disc stack centrifuges – used in the final stabilization stage, to finely control turbidity and prevent sedimentation. They ensure a uniform appearance of the juice without compromising the fiber content.

 

Flottweg also offers cascade configurations (press + decanter + separator) that enable continuous processing and extraction yields of over 90%. Additionally, the systems are fully cleanable (CIP), compliant with food standards, and can be quickly adapted for different fruits depending on the season or recipe.

 

 

Flottweg and Consultech – a partnership for industrial efficiency in juice production and beyond

 

In a beverage & dairy sector where every percentage of yield counts, choosing the right equipment is equivalent to implementing a correct, efficient solution calibrated to the specific needs of the product and the existing technological line.

 

As a Flottweg partner, we provide you with applied industry expertise, assistance in configuring the technological flow, installation, commissioning, and local service. The solutions we distribute are designed to support long-term performance, thus reducing losses, energy consumption, and downtime.

 

Whether you produce unfiltered juices from apples, pears, berries, or vegetables, Flottweg equipment can be optimized to deliver a stable, tasty, and competitive final product. From extraction to stabilization, every stage is handled with German precision – and we are here to ensure the result lives up to expectations.

 

Contact us for a free audit and to discover how we can integrate Flottweg equipment into your unfiltered fruit juice production line.

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