Mould Release Agents, Sealers & Dispensers

When you're using casting methods to create specific products, the right sealer and release agent can make the difference between success and failure. A release agent (also known as a mould release agent, mould release coating, or release coating) is simply a chemical that will prevent your chosen product materials from sticking and bonding to surfaces. A release agent is used in a wide range of processes, including:

  • Mould release
  • Die-cast release
  • Adhesive release
  • Tire/web release
  • Plastic release

When you're using mould making or casting projects for your designs and products, using the right mould release agent and sealer is critical.

How Are Sealers Used?

This will be a material that will seal any small holes or pores so that your chosen liquid mould material won't be able to penetrate the surface of your products. There are three categories of sealer:

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  • Permanent
  • Semi-permanent
  • Removable

You won't always need to use a sealer. But if your designs require it, then you should always remember to apply it before you get to the release agent application stage. Of course, sealing those small holes and pores means that you reduce the chances of your casting resins sticking to your mould or mechanically locking into your mould.

What that means is that you don't always have to use a sealer and a release agent on the same product. In some cases, using a sealer will remove the need for a release agent entirely. The most important thing to remember when using a sealer is that using too much can drastically affect your mould quality.

What is a Release Agent?

This is the product that you will apply to your liquid rubber and resins so that you can prevent those materials from sticking to moulds and surfaces. In some instances, you can use the same release agent for both mould making and for resin casting. But in most cases, you’ll need to use variations.

A concrete release agent will have slightly different properties to a urethane release agent! You must use the appropriate release agent when casting resins and other materials. Especially when mould release is such an important step in the manufacturing process. When you want your finished products to look and feel as the designer intended, then a mould release spray or coating is the solution that you need.

A mould release agent is essential in certain urethane applications. With silicone rubber moulds, a release agent can double the life of your production mould. And simply make life much easier!

Using A Release Agent

Before you start to look at the different types of release agent, you need to make sure that you need one. There are many situations where a mould release spray or alternative release agent is simply not necessary.

For example, most waxes and gypsum plasters will rarely require a release agent of any kind. Concrete moulding can require the use of a specifically targeted concrete release agent, but this will depend on your concrete mix.

Types of Release Agent

We offer several release agents in different forms. Including aerosol sprays, wax, and liquid formulas that you can paint or spray to suit the needs of your unique project. Below you'll find different types of release agent for various applications with pouring and mould materials such as:

  • Urethane plastic
  • Urethane rubber
  • Silicone rubber
  • Urethane resins
  • RTV silicones
  • And much more!

If you're working with a urethane rubber mould and urethane casting resin, a release agent is crucial for removing your finished product. In other situations, professionals rely on release agents to condition and protect their moulds and finished products for a long production life. To protect your projects and your moulds, using both sealers and a release agent is often a vital component of the manufacturing process.

Everything below is made from only the highest-quality products and raw materials available. Some are odourless or non-toxic for your FX needs. Start browsing now to find the perfect sealing or release agents for your project!

If you're unsure about the best type of sealer or release agent for your materials, contact the team at Rowe Trading today. We offer expert advice.

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