Keeping Resin Moving— A Silo Venting Project

Not every project is about adding more equipment. Sometimes it’s about fixing what happens during one specific moment in the process.

In this case, it came down to filling a silo with plastic resin through a cyclone—and what happens to the air while that’s going on.

What Was Happening

When you’re moving resin into a silo, especially pneumatically through a cyclone, you’re not just dealing with material. You’re moving a lot of air at the same time.

If that air doesn’t have a controlled way to escape, a few things start to happen:

Pressure builds up inside the silo

Dust and fines don’t separate the way they should

Filling efficiency drops

Equipment takes on more stress than it needs to

It’s one of those things that doesn’t always show up right away, but over time it creates problems.

What Needed to Be Solved

The focus here was pretty specific:

vent the silo properly during filling without disrupting the process.

That means managing airflow, protecting the system from pressure issues, and keeping material handling clean and controlled.

The Approach

MIXSYS worked on a venting setup that allowed the system to breathe the way it should while resin was being transferred through the cyclone.

It’s not the most visible part of a system, but it’s one of the more important ones.

Done right, it helps:

Maintain stable pressure inside the silo

Improve separation at the cyclone

Reduce dust and material loss

Protect equipment during loading

Why It Matters

Plastic resins don’t always behave the same way. Different types can carry fines differently, flow differently, and react differently during pneumatic transfer.

That’s why something as straightforward as venting still needs to be thought through.

Where This Fits In

This project is a good example of the kind of work that doesn’t always get highlighted.

It’s not a full plant build. It’s not a complete system overhaul.

It’s a focused solution to a specific part of the process that, when handled correctly, makes everything around it run better.

And that’s usually where the biggest improvements come from.