How Early Industrial Gummy Machines Deposited Shapes
In the 1960s, the first industrial gummy machines revolutionized candy manufacturing by using a clever, starch-based molding system. Rather than relying on complex metal molds, these machines deposited hot liquid gummy mixture - typically a gelatin, sugar, and flavor blend - into pre-formed impressions in trays filled with cornstarch. The starch acted as a non-stick, absorbent mold that held the shape while the gummies set and dried. This method allowed for intricate shapes like bears, worms, and fruit pieces by simply creating different starch impressions, which were made by pressing a template into the starch bed. The deposit head was designed to automatically fill hundreds of these cavities at once, ensuring consistent weight and shape across each batch.
Modern Problems Those Early Machines Avoided
By using this starch molding technique, early gummy machines sidestepped several challenges that later faced other manufacturing methods:
- Sticking and release issues: The starch provided a natural release agent, eliminating the need for chemical mold releases or expensive coating steps that could clog machinery or alter product taste.
- Shape distortion during cooling: The starch support kept each gummy perfectly formed as it cooled and set, preventing deformation from shrinkage or handling, which was a major problem with early metal molds that couldn't accommodate the gel's contraction.
- Complex tooling costs: Creating one starch impression board could produce thousands of identical cavities, whereas metal molds required expensive, custom machining for each new shape or product line.
- Uneven drying and texture problems: The starch wicking action helped remove surface moisture uniformly, preventing sticky or tacky exteriors that plagued early attempts using solid molds without absorbent material.
- Contamination between runs: Starch was discarded and replaced after each use, while metal molds needed rigorous cleaning to avoid flavor carryover or bacterial growth, which was far more labor-intensive in the 1960s.
These early innovations set the stage for modern starchless mogul systems, but the core principle - depositing into a supportive, absorbent bed - remains the foundation of efficient gummy production today at KorNutra.