Solutions · PET Storage
From virgin PET pellets and chips to flakes from bottle recycling: PW Silo Systems designs aluminum and stainless steel silos for PET – with storage, blending silos for consistent quality, and process silos for drying and deodorizing.
PET Storage at a Glance
A PET silo stores PET pellets, chips, or flakes between production or recycling and processing into bottles, fibers, film, or sheet. It protects the material from contamination and feeds it reliably to the next step.
PET is often dried before processing, and flakes from recycling vary in quality and odor. PW Silo Systems combines storage silos, blending and homogenizing silos, and PW ProcessLine process silos into one system.
Why PET Is Demanding
Moisture, recycled quality, and consistency decide how a PET silo system is built.
PET takes up moisture from the air, and many processes require dried material.
PET flakes from bottle recycling can carry odors and vary from batch to batch.
Flakes are light and irregular and do not flow like pellets.
Production lots differ, and a silo filled in batches forms layers of different quality.
In coated carbon steel silos, flaking paint and rust particles can end up in the PET.
Polymer production and compounding need large storage capacities – often more than a road-transportable silo can hold.
Silo Materials
We build silos exclusively in aluminum and stainless steel. Both materials offer high corrosion resistance and a long service life – without a coating as the only protection against corrosion.
Which of our two materials fits your PET silo depends on your product, your process, and your site. We review it with you.
Your PET Silo System
Storage silos, panel silos, blending silos, process silos, filtration, and safety equipment are engineered as one system. That means fewer interfaces for your team.
Storage
Concentric mass-flow discharge without asymmetric flow zones – as standard, site-assembled, indoor, or multi-compartment silos.
Learn moreLarge Volumes
Seal-welded panel silos up to 53,000 ft³ for petrochemicals, plastics, and recycling.
Learn moreBlending
Blending and homogenizing of polymer pellets with PW PipeBlend and PW CentralPipeBlend.
Learn moreProcess
Process silos for deodorizing, degassing, and drying.
Learn moreFiltration
Dust separation during filling and conveying.
Learn moreSafety & Monitoring
Rupture discs or explosion vents for combustible dust, level measurement for reliable monitoring of the silo content.
Learn morePET 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
PET pellets, PET granules, polyethylene terephthalate
PET pellets are on our list of bulk materials tested in our lab.
Tested in our lab
PET chips
PET chips are on our tested list.
Tested in our lab
PET flakes, bottle flakes
PET flakes are on our tested list. Process silos for deodorizing are reviewed with you.
Review with us
Recycled PET pellets, rPET
Recyclates are on our tested list. rPET pellets we review with you based on your material data.
Review with us
PET regrind from production
Regrind is on our tested list. PET regrind we review with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Material Check
Type in your polymer 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 PET 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 PET in silos.
These PET products are on our list of bulk materials tested in our lab:
rPET pellets, PET regrind, and PET powder we review with you based on your material data.
PW ProcessLine process silos are designed for deodorizing, degassing, and drying. Which solution fits depends on your PET product and your process. We review your requirements with you.
PW ProcessLine process silos are designed for deodorizing. Together with PW BlendLine silos for homogenizing, they help make recycled flakes more consistent. We review your material and process with you.
PW BlendLine silos blend and homogenize polymer pellets – with PW PipeBlend or PW CentralPipeBlend, depending on your product and throughput.
Seal-welded PW PanelLine silos reach capacities of up to 53,000 ft³. Their prefabricated components travel in standard containers or on curtain-side trucks – no oversize transport permits – and are assembled on site.
Both are possible. Which material fits your PET silo depends on your product, your process, and your site. We review the options with you.
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 PET grades, 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 PET silo, a large panel silo, or a complete system with blending and process silos, 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.
