Solutions · Engineering Plastics Storage

Silos for Engineering Plastics – PC, POM, PMMA & TPU

Engineering plastics are used for demanding parts – and they are demanding in storage, too. Many grades must be dried before processing, and each one must stay separate. PW Silo Systems designs aluminum and stainless steel silos for PC, POM, PMMA, TPU, PBT blends, and polyamide.

  • Aluminum & StainlessNo coated carbon steel
  • Process SilosDegassing & drying
  • 6 Product GroupsTested in our lab
  • Every U.S. StateDelivery and installation

Engineering Plastics Storage at a Glance

What is a silo for engineering plastics?

A silo for engineering plastics stores pellets such as polycarbonate, POM, PMMA, or TPU between delivery, compounding, and injection molding or extrusion. It protects the material from contamination and moisture and feeds it reliably to the machine.

Engineering plastics are processed in many grades and colors, often in smaller volumes than commodity plastics. PW Silo Systems plans storage, drying, and product separation around your product range.

Why Engineering Plastics Are Demanding

Six challenges in storing engineering plastics – and how we solve them

Moisture, purity, and product separation decide how a silo system for engineering plastics is built.

Translucent plastic pellets in close-up

Moisture

Many engineering plastics such as PC, PBT, and polyamide are dried before processing.

Our solution
A closed silo in aluminum or stainless steel – plus PW ProcessLine process silos for drying where your process requires it.
Your benefit
Material that reaches the machine as your process requires.
White plastic pellets with a metal pipe

Large Storage Volumes

Polymer production and compounding need large storage capacities – often more than a road-transportable silo can hold.

Our solution
Seal-welded PW PanelLine silos with up to 53,000 ft³, shipped in standard containers and assembled on site.
Your benefit
Large capacity without heavy-haul logistics.
Translucent plastic pellets in close-up

Visible Contamination

Transparent grades such as PC and PMMA show every foreign particle in the finished part.

Our solution
Silos built exclusively in aluminum and stainless steel – no coating as the only corrosion protection.
Your benefit
Lower contamination risk for your product.
Polymer pellets with test tubes

Many Grades

Engineering plastics come in many grades and colors that must not be mixed by accident.

Our solution
Dedicated silos or PW StoreLine multi-compartment silos that keep each grade separate.
Your benefit
Clear product separation in a compact footprint.
White plastic granules

Lot-to-Lot Variation

Production lots differ, and a silo filled in batches forms layers of different quality.

Our solution
PW BlendLine blending and homogenizing silos – with PW PipeBlend or PW CentralPipeBlend.
Your benefit
Consistent product quality for processing.
White polymer pellets in close-up

Indoor Installation

Smaller quantities of many products are often stored close to the machines.

Our solution
PW StoreLine indoor silos and multi-compartment silos sized for your consumption.
Your benefit
Storage where your production needs it.

Silo Materials

Aluminum or stainless steel silos for engineering plastics

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 engineering plastic silo depends on your product, your process, and your site. We review it with you.

Compare Silo Materials

Engineering Plastics

Silos for engineering plastics

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

Polycarbonate Silo

Polycarbonate pellets (PC)

Polycarbonate pellets are on our list of bulk materials tested in our lab.

Tested in our lab

POM Silo

POM pellets (acetal, polyoxymethylene)

POM pellets are on our tested list.

Tested in our lab

PMMA Silo

PMMA pellets (acrylic)

PMMA pellets are on our tested list.

Tested in our lab

TPU Silo

TPU pellets, thermoplastic polyurethane

TPU pellets are on our tested list.

Tested in our lab

ASA/PBT Silo

ASA/PBT pellets

ASA/PBT pellets are on our tested list.

Tested in our lab

Polyamide Silo

Polyamide pellets (PA, nylon)

Polyamide pellets are on our tested list. More on our polyamide silo page.

Review with us

PBT Silo

PBT pellets

PBT on its own we review with you based on your material data.

Review with us

TPE Silo

TPE pellets, thermoplastic elastomers

TPE grades we review with you based on your material data.

Related products we store

Also tested in our lab:

  • ABS pellets
  • PET pellets
  • Plastic compound
  • Plastic additives
  • Regrind

Other engineering plastics – let’s review them together

Send us your material data and we will review the right solution with you:

  • PPS
  • PEEK
  • PC/ABS blends
  • Glass-filled grades

Material Check

Is your engineering plastic on our tested list?

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.

Try: , ,

How it works

  1. 1Type the name of your bulk material – suggestions appear as you type.
  2. 2See right away whether it is on our list of tested materials.
  3. 3Not on the list? Send us your material details – we will review it with you.

Service in the U.S.

From planning to installation – across the U.S.

With more than 40 years of experience in silo engineering, we support your engineering plastic silo project from the first design discussion to commissioning. We deliver to every U.S. state and install with our own qualified personnel.

View Our Services

  • Silo TransportDelivery to every U.S. state – by truck, ship, or rail.
  • Field AssemblyModular assembly on site for larger storage capacities.
  • Installation & SupervisionTrained, qualified installation personnel.
  • Site RelocationExisting silos documented, dismantled, and reassembled.
  • Custom EngineeringSilo systems engineered around your polymers and process.

FAQ

Engineering plastics silo FAQ

Answers to the questions plant managers, engineers, and buyers ask most often about storing engineering plastics in silos.

Which engineering plastics can you store?

These products are on our list of bulk materials tested in our lab:

  • Polycarbonate pellets (PC)
  • POM pellets (acetal)
  • PMMA pellets (acrylic)
  • TPU pellets
  • ASA/PBT pellets
  • Polyamide pellets (PA, nylon)

PBT, TPE, and high-performance plastics we review with you based on your material data.

Can engineering plastics be dried in the silo?

PW ProcessLine process silos are designed for deodorizing, degassing, and drying. Which solution fits depends on your product and your process. We review your requirements with you.

We use many grades in small quantities. Does a silo make sense?

PW StoreLine multi-compartment silos keep several products separate in one silo, and indoor silos bring storage close to your machines. We plan the configuration with you based on your product range and consumption.

How do you even out lot-to-lot variation in engineering plastics?

PW BlendLine silos blend and homogenize polymer pellets – with PW PipeBlend or PW CentralPipeBlend, depending on your product and throughput.

Aluminum or stainless steel – which is right for a engineering plastic silo?

Both are possible. Which material fits your engineering plastic silo depends on your product, your process, and your site. We review the options with you.

Do you deliver and install engineering plastic silos in the U.S.?

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.

My polymers are not on your tested list. Can you still store them?

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.

What information do you need for a engineering plastic silo quote?

Tell us about your engineering plastic 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

Let's plan your engineering plastics silo.

Whether you need a single engineering plastic 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 Now

What Happens Next

  1. Share your requirements

    Tell us about your bulk material, your process, and your site conditions.

  2. Define the design together

    We work with you on material, silo type, and configuration – based on a bulk material analysis if needed.

  3. Receive your solution and quote

    You receive a custom-engineered solution with a detailed quote.