This is called the rigid wall aluminium containers made from extrusion from high purity aluminium ingot. These are monobloc containers with one opening, the ends can be processed to a curved flange to fit a plastic closure. The package can be used as tube containers for tablets, or pills. One can run multi-colour print inks on the surface, while inner surface can be lacquered to better fit for the intended products which come in contact.
Tubular glass containers are made in two-steps: tube making and converting to containers. The 2 steps are not necessary finished under one roof, so it requires two expertise to perfect the tubes and the containers. It is a challenge to achieve an ultimate HC1 in hydrolytic resistance in tubular containers. Tubular glass containers are widely used because of its superb clarity, small sizes, thin wall thickness and flat bottom to ensure even heat transfer during lyophilisation.