Packaging of Wine

Most wine are sold in glass bottles and are sealed using corks (50% of production comes from Portugal). An increasing number of wine producers have been using alternative closures such as screwcaps, or synthetic plastic "corks". In addition to being less expensive, alternative closures prevent cork taint, although they have been blamed for other problems such as excessive reduction.

Some wines are packaged in heavy plastic bags within cardboard boxes, and are called box wines, or cask wine. These wines are typically accessed via a tap on the side of the box. Box wine can maintain an acceptable degree of freshness for up to a month after opening, while bottled wine will more rapidly oxidize, and is considerably degraded within a few days.

Environmental considerations of wine packaging reveal benefits and drawbacks of both bottled and box wines. Glass used to make bottles has a decent environmental reputation, as it is completely recyclable, whereas plastics as used in box wines are typically considered to be much less environmentally friendly. However, wine bottle manufacturers have been cited for Clean Air Act violations. A New York Times editorial suggested that box wine, being lighter in package weight, has a reduced carbon footprint from its distribution. Boxed wine plastics, even though possibly recyclable, can be more labor-intensive (and therefore expensive) to process than glass bottles. And while a wine box is recyclable, its plastic wine bladder most likely is not.

Source : wikipedia


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