Why is cork used for bottle plug of wine?
Superior cork is soft and elastic and springs back to seal the
bottleneck after being squeezed into bottleneck by pressure. The cork will be
expanded after contact with the wine and tightens the interspace of the
bottleneck further so as to prevent wine leakage. Owing to many small exquisite
holes on the cork, only very small amount of air is allowed to gradually enter the
bottle and the wine contacts with micro-air for fulfillment of breathing and development,
which can facilitate the slow maturity of wine, make the wine mellower and
prolong the life of wine. In addition, cork is endowed with such functions as
heat insulation and bacteria isolation to protect the wine.