How Does the Vacuum Molding Process Work and its principle?
How Does the Vacuum Molding Process Work?
Ever heard of the process of vacuum molding?
If you’re not too sure exactly what vacuum molding or vacuum casting is, then let us explain.
Vacuum molding is a copying technique used to create a small series of functional plastic parts. The process involves using two-component polyurethanes and silicone molds for fast production of high-quality prototypes or end-use products.
This highly versatile manufacturing technique suits low volume batch production when injection molding isn’t suitable due to costs. Typically, one mold can be used to produce up to twenty parts before any re-tooling is necessary.
The Principle of Vacuum Molding
First of all, let’s understand the whole principle of using vacuum molding as a process.
Vacuum molding involves shooting material into a pre-prepared silicone mold. This clever technology makes it possible to obtain multiple parts from one single mold. Therefore, the process results in significant economies of scale.
However, one disadvantage is that one mold can only be used a limited number of times. How many times depends on various factors like the geometry and complexity of the casted part, the material selected (and if it is charged), the color in case of a mass-tainted part, etc.
As these silicone molded parts are comparable to injection-molded parts, they are especially suitable for a number of purposes.
For example, fit and function testing, marketing purposes such as pre-launch product testing, as a series of final parts in limited quantities, or as concept models and prototypes.
Likewise, vacuum molding also lends itself well to a range of finishing degrees. The finish you need can be easily matched for your parts!
Post time: Aug-10-2020