There is no stopper in red wine. What can be substituted for?
Many companies use the rubber stopper; in the vacuum pump will bottle too much air discharged to prevent wine becomes stale when the rubber stopper is very effective. But does the use of these materials as stoppers provide the benefits of a cork like biodiversity? Not to mention, it is impossible for them to produce the benefits of cork oak trees as mentioned above, for animals and plants.
There are still many people working on the use of other materials to achieve the ecological value of cork, so the birth of the stone bottle stopper. It is metallic, covered with a new England marine stone manual acquisition (access to the relevant departments permission from local rivers and beaches to collect) or other after years of water erosion and become very smooth stones. This is a very lovely idea, but stone is only a decoration on the cork, and its main material is still metal.
Many artists use recycled objects to create strange art objects on cork: Richard Kolb uses recycled spoons and cork; Guenter Scholz uses recycled steel and bronze decorations to create it. But in fact, the main part of the bottle stopper is still cork. Of course, you can also use the screw cap. Screw caps are gaining popularity in companies eager to avoid the cost of cork mold and high import of cork. However, unless the metal used for making cork can be recycled and used in a sustainable way, it can not achieve the additional role of cork for the environment.
