A patent assigned to KHS GmbH relates to treating containers with a digitally inkjet-printed dye or ink colorant before irradiating the containers with non-thermal energy radiation to dry or cure the colorant, preferably resulting in crosslinking. This same energy-including ultraviolet (UV), microwave or electron radiation-can be used to disinfect or sterilize the containers. The company describes the benefits of performing both functions simultaneously, as well as a preferred preprint step for improved adhesion. Containers may be cans, bottles, tubes or pouches made of plastic, metal or glass suitable for filling with liquid or viscous products.
Method for shaping metal containers
A patent from Alcoa Inc., Pittsburgh, relates to a method for shaping metal containers by turning outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section. The original diameter of a metal container can be expanded at least 5 percent and up to 50 percent in a single stroke of a single expansion die without first narrowing the metal container. Expanding the metal container can be done by any means including inserting the working surface of an expansion die into an open end of the metal container. The metal container may be any type including beverage cans, bottles and cups, aerosol cans and food containers made of aluminum, aluminum alloys or steel.
Controlling the oxygen intake in a cap closure
Systems and methods for controlling oxygen ingress in cap closures are disclosed, including one version that comprises a cap and a cap liner that includes a primary oxygen barrier layer and a first diffusive layer. One side of a first diffusive layer is adjacent to a first side of the primary oxygen barrier layer while the other side contacts the sealing surface of a bottle. The oxygen transmission rate of the cap liner is controlled by varying a thickness of the first diffusive layer. The application is said to be suitable for wine, where one embodiment of the invention matches the oxygen permeation of bark cork.