Illinois-based Kraft Foods is seeking packaging developers to come forward with materials that minimise or prevent melting of chocolate bar confections in warm or hot climates.
The food giant has appointed a US-based consultancy to find an innovative material that can stop chocolate melting at temperatures of up to 40 degrees celsius, reports PackagingNews.
Ohio-based, Nine Sigma has published a tender document looking for packaging material developers and has set a deadline of 10 September for submissions for the material. The material should perform at temperatures between 24 and 40 degrees celsius and through multiple changes in temperature.
It should also be only incrementally larger than existing packaging, be compatible with consumer pricing in full production runs and be single-use, disposable and above all environmentally-friendly.
The document states that the solution could involve novel insulating materials, phase change materials, thin film approaches that can store energy and repurpose it or packaging technologies that are triggered by temperature or light.