Bio-based rigid polyurethane foam packaging for frozen food insulation

Overview

This solution offers rigid polyurethane foam packaging designed specifically for frozen food insulation and storage. The foam formulation incorporates micro/nano fillers that enhance thermal resistance within the polymer matrix, resulting in higher thermal stability and improved mechanical performance. By adjusting the formulation, foams can be tailored to deliver specific mechanical and thermal properties suited to different packaging requirements. The inclusion of bio-based content contributes to sustainability and biodegradability, making the packaging an environmentally conscious choice for cold-chain applications.

Technical specifications

• Bio-based polyurethane formulation: Foams can be produced from up to 100% renewable content, supporting sustainability goals
• Micro/nano filler loading: Fillers are incorporated to improve thermal resistance, thermal stability, and mechanical strength
• Tailorable properties: Mechanical and thermal characteristics can be adjusted by varying the formulation and filler content
• Validated characterization methods: Thermal conductivity, scanning electron microscopy, and mechanical property testing have confirmed improved performance
• Thermal cycle and durability testing: Material performance under thermal cycling and other relevant parameters is evaluated for end-use suitability
• Mould-based prototyping: Thermal insulation boxes will be developed using moulds and tested under relevant frozen-storage environments

Technology readiness level

The technology is currently at a mid-stage development level. Initial laboratory work has successfully demonstrated foam synthesis from 100% renewable content and validated the effect of varying filler and renewable content on physical-cellular and thermo-mechanical properties. Further development over an estimated 12 months will focus on optimizing filler and bio-based content to achieve the required thermal conductivity for long-duration frozen food storage, followed by mould-based production of insulation boxes and environment-specific testing.