Concerning the “increase of knowledge of the product”, because of the impact it has had in the main markets, attention should be drawn to the publication of another article on the comparative permeability of synthetic stoppers, aluminium capsules and natural cork stoppers, where there are clear advantages in the use of cork stoppers:
The year 2006 saw the beginning of far-reaching studies on the impact of the type of bottle (bottleneck) and the importance of the composition of the stopper, in the performance of champagne stoppers.
