Solutions · Polymer Powder Storage
Polymer powders such as PVB, acrylic powder, and emulsion PVC are fine, light, and combustible. They dust, can bridge, and must stay clean. PW Silo Systems designs aluminum and stainless steel silos for polymer powders with you – with the right discharge, dust collection, and explosion protection.
Polymer Powder Storage at a Glance
A polymer powder silo stores PVB powder, acrylic powder, emulsion PVC, polyethylene or polypropylene powder close to production – for coatings, adhesives, plastisols, films, rotational molding, compounding, or other processes. It keeps the powder clean and contained and feeds it in a controlled way to weighing and mixing.
Polymer powders are fine and light. They dust during filling, some grades bridge, and polymer dust is combustible. Silo geometry, discharge, dust collection, and explosion protection are therefore designed together with you for your powder and your site.
Why Polymer Powders Are Demanding
Fine particles, dust, and explosion protection decide whether a polymer powder silo runs reliably.
Polymer dust is combustible. Filling, venting, and filtration must be part of a safety concept.
During pneumatic filling and conveying, fine polymer dust spreads quickly and settles on equipment and surroundings.
Fine grades such as emulsion PVC can compact and build bridges or rat-holes above the outlet.
Coatings, films, and adhesives react to contamination. Flaking coating or rust must not end up in the powder.
Different polymer powders and grades look alike – and must not be mixed by accident.
Particle size and properties can vary from lot to lot – and show up in your end product.
Silo Materials
We build silos exclusively in aluminum and stainless steel. Carbon steel is not an option for us: its coating is the only protection against corrosion – and flaking coating or rust can end up in your powder.
Which of our two materials fits your polymer powder silo depends on the product, your process, your quality requirements, and your site. We select the material and the design with you – together with the explosion protection concept.
Your Polymer Powder Silo System
Silo, discharge, blending, filtration, and monitoring 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 pneumatic filling and conveying – sized for fine powders.
Learn moreMonitoring
Level measurement for reliable monitoring of the silo content – so you know when to reorder.
Learn morePolymer Powders
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
Polyvinyl butyral powder, PVB
PVB powder is on our list of bulk materials tested in our lab. Discharge and dust collection are planned for this fine powder.
Tested in our lab
Acrylic powder, PMMA powder, acrylic resin powder
Acrylic powder is on our tested list. Silo and discharge are designed for its particle size.
Tested in our lab
Emulsion PVC, paste PVC, plastisol PVC
Emulsion PVC powder is on our tested list. Discharge aids are planned for this fine, cohesive powder.
Tested in our lab
Polyethylene powder, PE powder, rotomolding powder
Polyethylene powder is on our tested list. Venting and filtration are matched to its fine particles.
Review with us
Redispersible polymer powder, RDP, VAE powder
Redispersible powders are used in dry mortars and adhesives. We review your product data with you before designing the silo.
Review with us
Polyamide powder, nylon powder
Polyamide powders differ in particle size and flow behavior. We review them with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Powder Check
Type in your powder 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 polymer powder 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 PVB, acrylic, E-PVC, and other polymer powders in silos.
Dry polymer powders can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Redispersible powders, polyamide powder, and other polymer powders we review with you based on your material data.
Polymer dust is combustible. Explosion protection, venting, and filtration are reviewed with you for your powder, your process, and your site.
Emulsion PVC is a fine, cohesive powder. It compacts under the weight of the silo content and can build bridges or rat-holes above the outlet. A mass-flow hopper geometry, PW SpeedBlow air fluidization, and bin activators keep it moving.
Integrated filters and PW FilterLine dust collectors separate dust during pneumatic filling and conveying. Filter size and venting are matched to your filling rate and your powder.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your polymer powders leaves the silo in the order it came in (first in, first out), and no product is left behind in dead zones. Our PW StoreLine silos are designed for concentric mass-flow discharge without asymmetric flow zones.
We build silos exclusively in aluminum and stainless steel – never in coated carbon steel, so no flaking coating or rust can contaminate your powder. Which of our two materials fits depends on the product, your process, and your site. We select it with you.
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 – particle size, bulk density, 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.
