How EPS and EPP Molds Are Made: 3D Design to Trial Run

Crafting the Magic Molds Behind EPS Foam: A Peek Into the Factory’s “Metal Chefs”

Step 1: Designing the Blueprint

It all starts with a 3D digital sketch for EPS molding. Engineers use professional drawing software to draft the mold’s shape, down to the tiniest curve. 

Step 2: Choosing the Metal “Canvas”

EPS& EPP Molds are carved from aluminum or steel, metals prized for their durability and heat resistance.

Step 3: Carving the Mold – Meet the Robot Sculptors

Next, CNC machines (think: robot sculptors with drill bits) carve the mold’s shape from a solid metal block.

Step 4: Adding the “Steam Highway”

EPS molds aren’t just hollow shapes—they’re steam-powered marvels. Tiny channels are drilled into the metal to let steam flow through the mold during production.

Step 5: Polishing to Perfection

The mold’s interior is polished until it gleams like a mirror. Why? A smooth surface prevents the sticky foam from clinging to the mold—like greasing a baking pan.