The Clean Lock cap, developed by France’s Global Closure Systems (GCS), is a headstand bi-injected transparent closure incorporating a silicon valve.
The valve was designed to control and stop the flow of product so that the cap stays clean. The valve has been specified to provide the best dispensing performance and a clean cut off across the range of viscosities.
Stability of the upside down bottle is achieved by the design of the transparent external areas. The clarity of the closure brings focus to the clean spout and highlights the cleanness of the cap. The shape of the spout emphasizes control for Unilever's consumers.
In addition GCS has developed a live hinge which springs the lid all the way open in order to allow a one-hand opening operation and to ensure the consumer has maximum clearance for dispensing.