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Rethinking Water in EPS Manufacturing

One young sustainability colleague ever asked a simple question:“How much water do you waste to make EPS?”

EPS may be 98% air but the 2% that remains? It takes precision, steam, and yes, water.

In the pre-expansion phase, we use steam to puff the raw polystyrene beads.
During maturation, temperature and humidity must be carefully balanced.
Even in molding, water indirectly helps maintain form, pressure, and consistency.

The water we use is mostly recycled.
-How?
Closed-loop condensation systems collect and reuse steam

Cooling water recirculation helps regulate temperature with minimal waste

Smart moisture controls reduce excess use in pre-expansion chambers
Digital monitoring flags leaks or inefficiencies in real time
In fact, in our plant, over 85% of the water used in the EPS process never leaves the system.

We often say:
“Every drop has a job. And when it’s done it comes back for another shift.”
Because circularity isn’t just about plastics.
It’s about energy.
It’s about water.
It’s about doing more with less without compromising quality, safety, or performance.
Next time someone thinks foam is wasteful, ask them how we treat our water.
They might be surprised by what they learn.

Myaid Machinery supply EPS foam machine,CNC cutter and foam recycling machine from China.

#EPS #Sustainability #HarmonyChemical

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