Skruvkork

Skruvkork, or screw cap, is a bottle closure consisting of a metal cap that threads onto the neck of a bottle to seal its contents. It is widely used on wine, beer and spirits, and has become especially common for wines produced in New World regions and in countries seeking reliable, low-taint closures.

Most skruvkorks are aluminum with a plastic liner (propylene, polyethylene, or elastomer) to form a seal and to regulate oxygen transfer. The closure may be a simple twist-off design or a higher-resistance version used for sparkling wines.

Advantages: Consistent seal, low risk of cork taint, easy opening and resealing, lower cost, and predictable aging behavior at scale. Limitations: Perceived prestige can be less than natural cork, aging outcomes depend on liner and oxygen transmission, and some winemakers worry about long-term aging potential.

Environmental note: Aluminum closures are recyclable; liners affect recycling streams. Usage: In many regions, skruvkork has become the default closure for many bottled beverages.

Etymology: In Swedish and Norwegian, skruvkork literally translates to screw cap.