M/s R V Chumble

Since 1983

Manufacturing Excellence

The Vacuum Forming Process

In vacuum forming, a plastic sheet is heated until it becomes pliable, then it is sucked onto a mold using vacuum to take its shape. Discover our 5-step methodology.

The Process
STEP 01

Tooling & Preparation

We start by creating a precision aluminum or epoxy mold based on CAD designs. The mold is engineered with proper draft angles and cooling channels to ensure a perfect release.

STEP 02

Heating the Sheet

A sheet of thermoplastic is clamped and shuttled into the heating oven. Quartz heaters precisely raise the temperature of the plastic until it reaches its optimal pliability.

STEP 03

Pre-blow (Bubble)

To prevent webbing and ensure even material distribution, compressed air is blown beneath the heated sheet, creating a large, pre-stretched bubble.

STEP 04

Vacuum Forming

The tool is raised into the bubble, and a high-powered vacuum instantly sucks the air out, snapping the heated plastic tightly against the contours of the mold.

STEP 05

Cooling & Trimming

The formed plastic cools and solidifies. It is then ejected from the mold and moved to our 5-axis CNC routers where excess material is precisely trimmed away.

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