Alcoa Double-Lok Beverage Closures

Consumers demand package security. For that reason, Alcoa CSI offers the Double-Lok closure. Our unique patented tab design is the highest tamper evidence available for carbonated products. 

Consumers demand package security. For that reason, Alcoa CSI offers the Double-Lok closure. Our unique patented tab design is the highest tamper evidence available for carbonated products. When consumers open the Double-Lok closure they both hear and see the band separation, providing the highest level of product quality assurance. You can also be assured your brand trademark is protected with the security of Double-Lok.