Solutions · Plastic Recycling
Regrind, flakes, and agglomerate behave differently from virgin pellets: irregular particles, varying quality, and sometimes odors. PW Silo Systems designs aluminum and stainless steel silos for plastic recycling – with discharge, blending, and deodorizing planned for your material.
Regrind Storage at a Glance
A regrind silo stores ground production waste, post-consumer recyclate, agglomerate, or flakes between grinding, washing, extrusion, and reuse. It buffers the material and feeds it reliably to the next step.
Recycled materials vary in particle shape, bulk density, and quality. PW Silo Systems combines storage silos, seal-welded panel silos, blending silos, process silos, and discharge solutions into one recycling system.
Why Regrind Is Demanding
Particle shape, quality, and odor decide how a regrind silo system is built.
Regrind and flakes are irregular and light and can bridge in the silo.
Recycled material differs from batch to batch.
Post-consumer recyclates can carry odors.
Grinding produces fines that release dust during filling and conveying.
Polymer production and compounding need large storage capacities – often more than a road-transportable silo can hold.
Different regrind grades and colors must not be mixed by accident.
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 regrind silo depends on your product, your process, and your site. We review it with you.
Your Regrind 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 moreRecycled Materials
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
Plastic regrind, ground production waste
Regrind is on our list of bulk materials tested in our lab.
Tested in our lab
Recyclate, recycled plastic pellets
Recyclate is on our tested list.
Tested in our lab
Agglomerate, densified film
Agglomerate is on our tested list.
Tested in our lab
PET flakes, bottle flakes
PET flakes are on our tested list. More on our PET silo page.
Review with us
Film flakes, shredded film
Loose film flakes we review with you based on your material data.
Review with us
Mixed plastic regrind
Mixed plastics we review with you based on your material data.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Material Check
Type in your material 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 regrind 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 regrind and recyclate in silos.
These products are on our list of bulk materials tested in our lab:
Film flakes, mixed plastics, and other recycled materials we review with you based on your material data.
PW FlowLine adds tailored discharge solutions for poorly flowing bulk solids – such as PW SpeedBlow air fluidization and bin activators. Which solution fits depends on your material. We review it with you.
PW ProcessLine process silos are designed for deodorizing, degassing, and drying. We review your material and process requirements with you.
PW BlendLine silos blend and homogenize – with PW PipeBlend or PW CentralPipeBlend, depending on your material 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 regrind 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.
Tell us about your regrind 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 regrind 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.
