It’s a frustrating reality: stickiness is consistently one of the top consumer complaints about gummy supplements, yet there’s no universal standard for measuring it. The core reason is that “adhesiveness” is a complex, multi‑faceted property that doesn’t lend itself to a single, simple test. Unlike hardness (which can be measured with a durometer) or moisture content (which has standard analytical methods), stickiness depends on several interacting variables. These include the gummy’s surface tack, its internal cohesiveness, the ambient temperature and humidity, and even the specific materials the gummy contacts (e.g., fingers, packaging, storage containers).
A standardized test would require agreeing on all these variables, which is difficult across different manufacturing environments. At KorNutra, we take a practical approach: we don’t chase a hypothetical universal standard. Instead, we focus on robust, empirically‑driven in‑process controls to ensure our gummies meet the consistently low‑stickiness performance our customers expect. Our team evaluates adhesiveness through validated internal methods that control for:
- Temperature and humidity: We test gummies under both ambient and accelerated storage conditions.
- Surface contact: We measure adhesion to common packaging films and to human touch (using tactile evaluations).
- Time after production: We track stickiness changes during curing and shelf‑life.
Why no universal standard exists
The food and supplement industries have not coalesced around a single “stickiness test” for three main reasons:
- Diverse formulations: Gummy recipes vary widely-different gelatin ratios, pectin types, starches, and sugar alcohols all affect adhesiveness. A test valid for one formulation may not transfer to another.
- Conflicting priorities: Manufacturers may want to minimize stickiness for packaging, while consumers may associate a certain “tack” with freshness. There’s no industry consensus on what an “acceptable” stickiness level is.
- Measurement complexity: Adhesiveness is not a single metric. It involves tack (instant stickiness), peel strength (force to remove a gummy from a surface), and cohesiveness (internal resistance to deformation). Each requires different test equipment and conditions.
What this means for you
When choosing a gummy supplement manufacturer, avoid those who cite a generic “standard” for stickiness. Instead, ask for specific data: internal test results under defined conditions, stability data showing stickiness over shelf‑life, and packaging compatibility tests. At KorNutra, we provide this information transparently-because we know that consistent, non‑sticky gummies are a mark of quality.
In short, the lack of a universal standard is not a flaw; it’s a reflection of the complexity of gummy manufacturing. The best solution is a manufacturer with rigorous, validated internal methods-and that’s exactly what KorNutra delivers.