Gummy supplements come in all shapes and sizes, but making them that way takes some know-how. The process blends food science and engineering to deliver consistent, high-quality products. At KorNutra, we use advanced molding technologies to match your specs, from simple bears to custom shapes.
Primary Gummy Molding Processes
Two main processes dominate gummy supplement manufacturing: starch molding and silicone molding. Each has its own strengths.
Starch Molding
This traditional method is highly versatile, and the industry name for it is starch mogul. It uses trays filled with corn starch. The starch is imprinted with cavities in the desired shape using precision molds.
- The Process: A hot gummy solution (containing gelatin, pectin, or other gelling agents, along with flavors, colors, and active ingredients) is deposited into the starch cavities.
- Cooling & Setting: The trays move to a cooling chamber where the gummies set and solidify. The surrounding starch also draws moisture out of the deposited mix, which firms the pieces and helps them release cleanly.
- Finishing: The trays are then dumped, and the starch is brushed away from the formed gummies. The starch is dried and recycled for future use.
- Best For: This method is excellent for high-volume production and allows for intricate, three-dimensional shapes with fine detail.
Silicone Molding
Silicone molding is the newer approach. It uses reusable food-grade silicone molds instead of starch. Starchless lines can also run metal or polycarbonate molds, but silicone is the common choice for flexible, detailed cavities.
- The Process: The gummy solution is deposited directly into the flexible silicone cavities.
- Cooling & Demolding: After cooling, the flexible molds pop the gummies out easily, with no starch dusting needed.
- Best For: This method is great for smaller batches, prototypes, and products where minimal dust or residue is a priority. It also makes it easier to create complex, undercut shapes.
Factors Influencing Shape and Size
The mold sets the outline, but other factors decide how well a piece holds it and how consistent it stays.
- Depositor Technology: Computer-controlled depositors fill the molds with the gummy mix, controlling portion size and keeping things consistent.
- Gelation System: The gelling agent, whether gelatin, pectin, or agar, changes the texture, clarity, and shape-holding ability.
- Recipe & Cooling Profile: The formula and cooling time have to be dialed in so the gummy sets without losing definition or getting surface flaws.
Shape and Size Set the Dose per Piece
For a candy gummy, the mold sets the look. For a supplement gummy, it also sets the dose. The cavity volume sets how much slurry, and therefore how much of each active ingredient, lands in one piece. A larger or deeper cavity delivers more actives per gummy; a smaller one delivers less.
That is why depositor precision and fill weight matter more for supplements than for confectionery. If the fill weight drifts between cavities, the potency per piece drifts with it, and the label stops matching the product. Dietary supplement labels state potency per gummy. That declared amount has to survive cooking, depositing, demolding, and drying. Manufacturers validate finished-piece potency against the full production process under 21 CFR Part 111 rather than assuming the mixing tank was uniform.
When a brand picks a shape, it's also committing to a dose per piece. A bear at 3 grams and a bear at 5 grams are two different label decisions, even if the recipe is identical.
Picking the right molding process is a big decision, since it affects design, efficiency, and quality. Work with a manufacturer who knows how to match the method to your vision for appearance, texture, and scale.