Invention Reference Number
Vacuum insulation panels (VIPs) are crucial for applications requiring low thermal conductivity, such as refrigeration systems and building materials. These panels typically include a core material enclosed within a gas-tight barrier film. However, the fragility and high cost of these films have limited their broader adoption. A scalable, cost-effective method to produce durable, self-healing barrier films could revolutionize multiple industries by enhancing the durability and performance of VIPs and other products.
Description
The disclosed technology offers an advanced method for manufacturing continuous, self-healing barrier films using a roll-to-roll slot-die coating process. This method involves coating both sides of a separator substrate with a curing agent slurry and a curable resin slurry. The process utilizes either single-sided or tandem coating lines. Protective layers are interleaved during the coating process to create a multi-layered barrier film.
The films produced by this method can be formed into barrier envelopes, which, when combined with an insulating core material, can be evacuated and sealed to create a self-healing vacuum insulation panel. This innovative manufacturing process allows the barrier film to automatically repair itself if punctured, thereby maintaining its insulating properties and extending the service life of the product.
Benefits
- Self-healing properties: The barrier film repairs itself when damaged, ensuring long-term insulation performance.
- Scalability: The roll-to-roll process supports high-volume production, reducing costs.
- Versatility: Suitable for various applications, including building materials, refrigeration, tires, roofing, cargo containers, food packaging, and pharmaceutical packaging.
- Durability: Enhanced film strength reduces the likelihood of damage during handling and use.
- Cost-effective: Lower production costs make high-performance insulation more accessible for various industries.
Applications
- Building insulation: Improved vacuum insulation panels for energy-efficient buildings.
- Refrigeration: Durable insulation for refrigerators, freezers, and refrigerated transport.
- Packaging: Enhanced barrier properties for food and pharmaceutical packaging.
- Automotive: Self-healing films for tires and other automotive components.
- Roofing: Durable and insulating films for roofing applications.
- Cargo containers: Protection and insulation for shipping containers.
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
