Cork (material) Guide, Meaning , Facts, Information and Description
for a wine bottle]]Cork material is a subset of generic cork tissue, harvested for commercial use primarily from the Cork oak tree, Quercus suber, with Portugal producing most cork worldwide.
Cork's elasticity combined with its near-impermeability makes it suitable as a material for bottle stopperss, especially for wine bottles. Its low density makes it a suitable material for fishing floats and buoys. Sheets of cork, often the byproduct of more lucrative stopper production, are used to make floor tiles and bulletin boards.
Cork demand has increased due to a larger proportion of wine being sealed with cork rather than being sold in bulk. Since a tree's bark can only be harvested once a decade or so, supply is highly inelastic. Top quality corks are quite expensive, so cheaper brands have switched to lower quality cork, synthetic plastic stoppers, screwcaps, or other closures. These also eliminate cork taint. The synthetic stoppers also do not dry out and shrink so the bottles do not have to be on thier sides to prevent the wine from oxidizing.
Recently cork has also been used in rocket technology due to its fire resistance. It can also be used as bricks for the outer wall of a house. (This was seen at the Portugal Pavilion Expo 2000.)
Cork contamination with harmless but foul-smelling trichloroanisole is one of the primary causes of cork taint in wine.
Note that the cork oak is unrelated to the family of "cork trees", which are not used for cork product:
- Phellodendron amurense - Amur cork tree or Chinese cork tree
- Phellodendron japonicum - Japanese cork tree
- Phellodendron lavallei
- Phellodendron sachalinense
See also
- APCOR, Portuguese Cork Association
External link
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