US Patent 8434643 Dual chamber dispenser

A disposable dual chamber dispenser that contains separate products until a time of use. The disposable dual chamber dispenser includes an outer dispenser encapsulating an inner dispenser, where the outer dispenser is compliant and the inner dispenser is substantially less compliant than the outer dispenser and configured to break at a failure zone. The outer dispenser may be formed of a single material that is suitable for a blow-fill-seal process and the inner dispenser may be formed of another single material, different than the single material forming the outer dispenser, that is also suitable for a blow-fill-seal process.