Thermal retention is essential for on-the-go lifestyle convenience. This feature ensures that containers minimize heat transfer, keeping beverages and food at their desired temperature for extended periods, providing a benchmark for high-performance functionality.
The Science of Vacuum Insulation
In the kitchenware industry, insulation performance is primarily achieved through Double-Wall Vacuum Insulation technology. A container is constructed with an inner and outer wall, usually made of high-grade 18/8 stainless steel, with the air evacuated from the space between them. Since a vacuum contains no molecules, it eliminates heat transfer by conduction and convection. To further reduce heat loss by radiation, high-performance flasks often feature a copper or silver coating on the outside of the inner wall, which reflects thermal energy back into the liquid. This ensures that the exterior of the flask remains cool to the touch (or condensation-free) while the interior stays thermally stable for 6 to 24 hours or more.
Validation through the High Performance Mark
By meeting selected technical benchmarks, your kitchenware products become eligible for the Intertek High Performance (HP) Mark’s Insulation Performance. We apply EN 12546-1. The tests involve filling the container with boiling water (95°C) or ice water (0°C) and placing it in a climate-controlled chamber at a steady room temperature (20°C to 25°C). Technicians measure the temperature at specific intervals (e.g., 6, 12, and 24 hours).
This mark serves as a ‘proof of performance’ by validating that your product meets the High-Performance Mark standards. You can display the mark on product tags, brochures, packaging, websites, and in both online and offline stores across multiple channels, confidently signal to consumers that the performance claims of your products are verified.
