1. Applications
  2. Food Dehumidification
  3. Dehumidification in the confectionery manufacturing

How chocolate and sugar remain processable

Dehumidification in the confectionery manufacturing

The fact that humidity and sugar form a sticky compound poses a problem for the confectionery industry. The same goes for chocolate blooming in moist surroundings. Dehumidifiers are employed in order to reduce the humidity level during the entire production process: during transportation of the raw materials, inside the sugar silo, in the sugar-coating pan, the drying chamber, the chocolate moulding machines as well as during packing, cooling and storage.

As part of the quality assurance dehumidifiers belong into every confectionery and chocolate factory: The devices ensure dry ambient air in the entire production chain. All of the production stages and room sizes can be equipped with dehumidification systems and the corresponding measuring technology. Sector-specific problems are prevented as follows:

  • At a relative humidity of less than 60 per cent chocolate is protected from both fat bloom and sugar bloom.
  • Raw materials containing sugar do not stick together and remain processable and storable.
  • The drying time for sweets, chocolate or fruit gums is reduced.
  • Confectionery in cooling tunnels is protected against condensation.
  • Confectionery has better protection with respect to microbial contamination.
  • Cardboard packaging remains dry and stable.

From the hauling paths to sugar silo, production and packing right up into storage

A good dehumidification concept starts with the delivery of the powders and granules and then takes the transport route into consideration. This ensures that sugar, cocoa, dye and flavouring powders arrive at the silo in a free-flowing state. Within the silo, too, the hygroscopic powders and granules have to be kept dry by means of pre-dehumidified air to ensure their processability. Further typical dehumidification tasks in the confectionery industry include the generation of dry air curtains above the machinery and the deliberate pre-dehumidification of process air for e.g. sugar-coating machines or drying tunnels. In the areas of packing and dispatch warehouses dehumidifiers protect sweets and cardboard boxes from sticking together and chocolate from blooming.

Securing product quality with dehumidifiers of the TTR and the DH series

For the confectionery industry the Trotec Group provides both mobile and stationary desiccant dehumidifiers of the TTR series in various performance classes. Also in stainless steel. These dehumidifiers feature two separate air flows (TTR Trisorp Dual principle of operation) and are hence characterized by an especially simple adjustability. Besides, TTR desiccant dehumidifiers are ideal for the production of ice cream, for they also effectively dehumidify at sub-zero temperatures of as low as -20 degrees. The particularly hardwearing stationary or mobile DH condenser dryers from the Trotec Group are also suited for dehumidification in the confectionery manufacturing. They are f.i. eligible for the pre-dehumidification of the supply air for the sugar-coating pan, the chocolate moulding machines or the drying chamber. As they are working based on the principle of condensation, DH dehumidifiers not only impress with an extremely high performance, but also with their economic efficiency. Each dehumidification concept developed by the Trotec Group for confectionery manufacturers is further equipped with the data loggers of the DL series, produced in Germany, for tamper-proof monitoring.

Well-founded dehumidification calculation in the production of confectionery

Which dehumidifier is right for a confectionery manufacturer, the one using the principle of condensation or else the desiccant principle, depends on different factors: The room size matters just as much as the ambient temperature. Is a compact mobile dehumidifier sufficiently dimensioned for the fruit gums in the drying chamber or do you need large stationary desiccant dehumidifiers in the storeroom for filled chocolates? Our consultants of the industrial services team are on hand with help and advice when calculating the capacities, the operating costs and selecting the required devices.

Further solutions


Upon request, we also produce customized desiccant dehumidifiers as special models

Upon request, we will readily produce tailor-made desiccant dehumidifiers as special models “made in Germany” perfectly geared to your needs, e.g.:

  • TTR industrial desiccant dehumidifiers with hygienic design
  • TTR industrial desiccant dehumidifiers for PWIS-free dry air
  • TTR industrial desiccant dehumidifiers with extremely low dew point

Makes use of the possibility of having special models with tailored components for your individual needs planned, designed and manufactured in close consultation with our specialists.
Click here to find out more ...

Further application examples for air dehumidification

  • Dehumidification when filling & packing

    The humidity level during filling and packing in the chemical and pharmaceutical production must be precisely controlled. After all, the damage would be immense should hygroscopic products go lumpy, start to stick or their shelf life decrease. Using our adsorption dryers, process air conditioning is no problem.

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  • Dehumidification in the meat industry

    Especially in meat processing and sausage production, optimal hygiene is paramount. This is the only way to guarantee a good product quality. Therefore, strict hygienic requirements have to be met when handling meat – particularly in cooling areas where raw products are processed. But due to the low temperatures and high humidity levels, this is exactly where to expect the greatest dangers:...

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  • Dehumidification and meat aging

    Dry aging is certainly an art in itself. Meat lovers appreciate the complex and time-consuming procedure involved in the making of this outstanding type of beef. It is not without reason that dry-aged beef is considered to be the best type of steak in the world. It not only calls for an excellent beef quality. Also vital for the aging facilities is the ideal technical equipment. Experts check the...

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  • Dehumidification for pig breeding

    Excessive humidity values and high temperatures are anything but agreeable climate conditions for the pigs kept on such farms. Be it breeding or fattening: The animals need an optimized stable climate in order to stay healthy and productive. The application of professional dehumidifiers ensures agreeable temperatures and an improved air quality, consequently immensely enhancing the pigs'...

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  • Humidity regulation in cheese dairies

    The ripening of young cheese may be the most important step in cheese production. For soft cheese, the ripening process takes several days or weeks. For sliced and hard cheese, this process even takes several months or years. The climate plays a significant role in the development of cheese and the assurance of product quality. Usually, the temperature ranges from 7 to 15 degrees Celsius and the...

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  • Lyophilisation tunnels and frozen storage

    The food industry is facing a paradox: On the one hand, turning water into ice is the raison d'être of lyophilisation tunnels and cold stores. On the other hand, icing is a major problem in this process. Ice, hoarfrost and fog in the cooled production infrastructure lead to costly accidents and malfunctions right up to production losses. Setting up additional industrial dryers prevents icing by...

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  • Dehumidification in supermarkets

    A supermarket has various sections requiring different climate conditions. For instance there are fresh food areas holding fruit and vegetables which need to be cooled constantly to keep the goods fresh for as long as possible. It gets even colder at fresh meat counters and in the frozen food section. A run-of-the-mill air-conditioning system can usually not efficiently cater to such a wide...

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