Temperature Sensitivity
Chocolate softens with heat – pieces lose their shape and stick together.
- Our solution
- Storage conditions and site requirements reviewed with you before the design.
- Your benefit
- Chocolate pieces that arrive in shape.
Solutions · Chocolate Storage
Chocolate chips and drops are heat-sensitive, can stick together under load, and should arrive at the mixer intact. PW Silo Systems designs aluminum and stainless steel silos with gentle mass-flow discharge for bakeries, confectioners, and food producers.
Chocolate Storage at a Glance
A chocolate silo stores chocolate in pieces – such as chips, drops, chunks, or callets – close to production for cookies, cereals, ice cream, or confectionery. It protects the chocolate from contamination and feeds it in a controlled way to dosing and mixing.
Chocolate is sensitive to temperature, and pieces can stick together under the weight of the silo content. Storage conditions, silo height, and discharge are designed with you for your chocolate.
Why Chocolate Is Demanding
Chocolate is a high-value ingredient. Its quality at the mixer depends on how it is stored and discharged.
Chocolate softens with heat – pieces lose their shape and stick together.
The weight of the silo content can press chocolate pieces together.
Uneven flow and long drops break chips and create fines.
In coated carbon steel silos, flaking paint and steel particles can end up in the chocolate.
In funnel flow, chocolate can stay in the silo for a long time while fresh product passes through the center.
Dark, milk, and white chocolate – and products with allergens such as milk or nuts – must not be mixed by accident.
Silo Materials
Aluminum and stainless steel silos are widely used for flour, sugar, starch, and other food ingredients. Both materials offer high corrosion resistance, good hygiene, and a long service life.
Carbon steel is not an option for us: its coating is the only protection against corrosion. Once it wears, paint particles and steel can get into the product. Which of our two materials fits your chocolate silo depends on your product, your process, your cleaning requirements, and your site – we review it with you.
Your Chocolate Silo System
Silo, discharge, blending, filtration, and safety equipment are engineered as one system. That means fewer interfaces for your team and components that are designed to work together.
Storage
Concentric mass-flow discharge without asymmetric flow zones – as standard, site-assembled, indoor, or multi-compartment silos.
Learn moreBlending
Gravity blending and homogenizing with four technologies, including PW ConeBlend with a hopper that is quick to clean.
Learn moreDischarge
Air fluidization for uniform discharge of poorly flowing products – prevents bridging and can be retrofitted to existing silos.
Learn moreDischarge
Vibration from unbalanced motors breaks up cohesive forces, resolves caking, and keeps the outlet clear.
Learn moreFiltration
Dust separation during filling and conveying, in a hygienic design for the food industry.
Learn moreSafety & Monitoring
Rupture discs or explosion vents for combustible dust, level measurement for reliable monitoring of the silo content.
Learn moreChocolate Products
Products marked “Tested in our lab” are on our list of bulk materials. The others we review with you based on your material data before designing the silo.
Tested in our lab
Chocolate
Chocolate is on our list of bulk materials tested in our lab. Storage conditions are reviewed with you for your product.
Tested in our lab
Chocolate chips, chocolate drops
Chocolate chips and drops are used in cookies, cereals, and ice cream. Mass-flow discharge supports gentle handling.
Tested in our lab
Chocolate callets, chocolate buttons, chocolate coins
Callets and buttons are used for melting and confectionery. Silo and discharge are designed for their flat shape.
Review with us
Chocolate chunks
Larger, irregular chunks need outlets matched to their size. We review your product data with you.
Review with us
Compound coating, compound chocolate drops
Compound coatings use vegetable fats instead of cocoa butter. We review your product data with you.
Review with us
Chocolate powder, grated chocolate
Grated and powdered chocolate is fine and cohesive. We review your product data with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Chocolate Check
Type in your chocolate product or any other bulk material to see whether it has already been tested in our lab. The list covers 287 bulk materials.
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Service in the U.S.
With more than 40 years of experience in silo engineering, we support your chocolate silo project from the first design discussion to commissioning. We deliver to every U.S. state and install with our own qualified personnel.
FAQ
Answers to the questions plant managers, engineers, and buyers ask most often about storing chocolate in silos.
Yes. Chocolate is on our list of bulk materials tested in our lab. Chocolate chips, drops, and callets can be stored in a properly designed silo. Chocolate chunks, compound coatings, and chocolate powder we review with you based on your material data.
Chocolate is sensitive to heat and can stick together under the weight of the silo content. We review storage conditions, site requirements, silo height, and throughput with you before we design the silo.
Both. Aluminum and stainless steel silos are widely used for chocolate and other food ingredients because they offer high corrosion resistance, good hygiene, and a long service life. Which material fits your project depends on your product, your process, your cleaning requirements, and your site. We review the options with you.
In a carbon steel silo, the coating is the only protection against corrosion. If it wears or flakes off, paint particles and steel can end up in your chocolate. That is why we build silos exclusively in aluminum and stainless steel.
Concentric mass-flow discharge moves the entire silo content evenly instead of pulling pieces through a fast central channel. Filling and discharge are planned with you for gentle handling.
We recommend a dedicated silo per product – or PW StoreLine multi-compartment silos that keep several products separate in one silo.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your chocolate leaves the silo in the order it came in (first in, first out), and no product is left behind in dead zones where it could age or cake. Our PW StoreLine silos are designed for concentric mass-flow discharge without asymmetric flow zones.
Hygiene starts with the materials: aluminum and stainless steel offer good hygiene and corrosion resistance. In addition, our flat-roof designs support high cleanliness standards, PW SpeedBlow uses high air flow for cleaning, and the PW ConeBlend blending silo has a hopper that is quick and easy to clean – well suited to frequent product changes.
The right size depends on your daily consumption, delivery intervals, the number of products, and the space available at your site. PW StoreLine silos are available in a wide range of sizes and diameters, and silos too large for road transport are assembled on site. We size the system with you – without oversized investment.
Yes. We deliver to every U.S. state and support your project with silo transport, field assembly, silo installation and supervision, and site relocation of existing systems.
Very likely. Our silo systems are designed for nearly all free-flowing, granular, and powdered bulk solids. Send us your material details – kernel size, moisture, and how the product is filled and discharged – and we will review the right storage solution with you.
Tell us about your products, required storage capacity, how the silo is filled and discharged, and your site conditions. Based on this, we work out the material, silo type, and configuration with you and send you a detailed quote.
Your Project
Whether you need a single chocolate silo, several silos for different products, or a complete system with blending and discharge, tell us about your requirements. We'll develop a solution that fits your product, your process, and your site.
Send a Request NowWhat Happens Next
Tell us about your bulk material, your process, and your site conditions.
We work with you on material, silo type, and configuration – based on a bulk material analysis if needed.
You receive a custom-engineered solution with a detailed quote.