Many supplement manufacturers assume that a "pre-gel" setting step, where the capsule or gummy is partially cooled or dried before demolding, is always necessary to prevent distortion or sticking. This assumption often stems from poor release performance with standard mold release agents. If you switch to a properly formulated mold release agent designed for your material, such as a food-grade lecithin-based spray or a silicone-based lubricant, or use a non-stick surface such as a PTFE-coated or silicone mold, the pre-gel step may become unnecessary. With these alternatives, demolding can often proceed immediately after gelation or cooling, saving production time and reducing risk of damage to the product.
The key variables are the release agent's coating uniformity and the surface's slip properties. A high-quality release agent eliminates mechanical adhesion, while a non-stick surface reduces the frictional force during demolding. This means the product can be demolded as soon as it reaches sufficient rigidity, without needing a lengthy "pre-gel" stage. In gummy manufacturing, a non-stick silicone mold often lets you demold at room temperature as soon as the gummy sets, while an inadequate release agent causes tearing or sticking if you demold early. In capsule production, a properly applied release agent allows demolding right after the capsule shell cools, skipping a separate stabilization hold.
A quick comparison shows the potential change:
- With standard release agent (inadequate): A pre-gel step is required to let the product shrink slightly and harden, reducing sticking and surface damage.
- With optimized mold release agent: Minimal or no pre-gel step; the product can be demolded once firm, often within seconds of reaching set temperature.
- With non-stick surface (e.g., PTFE, silicone): No pre-gel step; the product releases as soon as it holds its shape, even if still slightly warm.
Setting time also controls texture and moisture
A clean demold is not the same as a finished product. Release agents and non-stick molds solve adhesion, but they do not change how fast a gelatin or pectin gel builds internal structure or sheds surface moisture. In a traditional starch mogul line, pieces stay in the starch for a day or more while they lose moisture, and a gummy that leaves the mold without tearing can still slump, bead with moisture, or lose its shape on the tray if it comes out too early. The setting window firms the surface while the gel network finishes forming and moisture migrates, which sets final texture and shelf stability. Before you remove the setting step, run a trial that checks demolding yield and also measures firmness, weight, and moisture after 24 hours. A few minutes of saved cycle time is not worth a batch that releases cleanly but fails a texture or water-activity spec.
At KorNutra, we focus on providing precise release solutions for your production needs. Always test your specific formulation and mold release combination to confirm the optimal timing, as factors like ingredient viscosity and mold geometry can still influence results. In many cases, the assumption that pre-gel is mandatory is incorrect, especially when you upgrade your release agent or mold surface. That change can speed up your process, reduce cycle times, and improve yield.