Although the packaging of modern wines, regardless of their grades, is becoming more and more exquisite, we can still see some information about the quality of the wine from the details of the outer packaging of the wine bottle.
Shrinkwrap Seal
The shrink wrap is the outer seal of the bottle, which is a coat that seals the wine cork and the bottle opening. The most important shrink wrap materials on the market are plastic, aluminum foil, and wax seal. Some are even double-layered plastic and aluminum foil, or double-layer aluminum foil. Basically, when we see the aluminum foil and wax-sealed wine caps, we can infer that this wine is better than plastic wine caps at least in terms of ageing. Generally speaking, plastic wine caps are common in some entry-level wines. In France, they are table wine or regional wines. So when everyone sees the wine covered with a plastic wine cap, you can probably judge that this is a more basic wine that is suitable for drinking now and should not be kept for long. Generally, the drinking period of this kind of wine is 2-3 years. If you see more than this period, it is very likely that the wine has lost its freshness and the drinking period has passed.