Reduce Scrap: How to Properly Apply Release Agent in 6 Steps

Reduce Scrap: How to Properly Apply Release Agent in 6 Steps

Reduce Scrap: How to Properly Apply Release Agent in 6 Steps

Sticky parts, trapped air pockets, collapsed foam surfaces - they all lead to the common problem of increased scrap rate for polyurethane manufacturers. The solution? Proper application of a mold release agent, which can help eliminate mold buildup and its many costly consequences. At Chem-Trend, our experts recommend a simple process for effective application of a release agent onto foam-forming molds.

Step 1: Clean Your Mold
Start with a clean canvas. Before applying a release agent, it's important to clean your mold thoroughly. Any remaining product or buildup on the mold surface can negatively affect the quality of your molded polyurethane parts production.

Step 2: Dry Your Mold
After cleaning, use a clean cloth or towel to dry the mold. Follow by wiping with a clean solvent and let air dry. Completing these first two steps will guarantee a proper mold surface to apply the release agent.

Step 3: Apply Your Release Agent
Release agents can be applied via a variety of methods. While Chem-Trend products are accompanied by product data sheets that provide specific instructions, there are some overall recommendations for proper application using a few different methods:
Cotton cloths - Wet the surface of the cloth with the release agent and evenly wipe all areas of the mold surface.
Conventional spray equipment - Once mixed properly, spray should be constantly agitated in the drum to maintain a consistent spray. Hold tip 6-16 inches from the mold surface and apply evenly.
Aerosol - Position spray 12 inches from mold surface and apply a light, uniform coating using a sweeping motion. Each side should take a few seconds to complete.

Step 4: Allow Film to Form
After applying the release agent using your preferred method, it's important to have a dry mold surface, especially before pouring foam. Allow the release agent to evaporate to form a film on the mold surface.

Step 5: Reapply Release Agent
It's important to reapply the release agent to the mold after a couple of cycles have been completed. This will ensure a high-quality foam product and keep your production efficient.

Step 6: Store Release Agents with Care
Release agents work more effectively when stored correctly. Containers should be tightly sealed to prevent evaporation and/or contamination that can affect your final product. If stored in cold temperatures, allow the product to warm to room temperature prior to use.

While proper application alone doesn't guarantee productivity, it can transform your operation when combined with advanced technology and expert service. Partnering with Chem-Trend to find innovative solutions for your polyurethane molding processes can help you meet your goals and boost your bottom line.

Chem-Trend has solutions for a variety of molding or pressing challenges. Try our Solution Finder today.