Composite cans are typically made of multiple layers of materials to provide strength, durability, and protection to the packaged products. The primary components of composite cans include:
1. Paperboard: The innermost layer of the composite can is usually made of paperboard. Paperboard provides stability to the can and acts as a barrier to moisture and light.
2. Aluminum Foil: To enhance the can’s barrier properties, an aluminum foil layer is often added. Aluminum foil provides excellent protection against moisture, oxygen, and light, ensuring the freshness and quality of the contents.
3. Adhesive: Adhesive layers are used to bond the various layers of the composite can together. The adhesive is carefully chosen to ensure strong adhesion and maintain the integrity of the can.
4. Outer Coating: The outermost layer of the composite can is often coated with a protective material, such as polymer or lacquer. This coating provides additional protection against moisture, abrasion, and external elements.
By combining these materials, composite cans offer a robust packaging solution that can withstand various handling and transportation conditions while keeping the contents safe and secure.