Rullförslutningar

Rullförslutningar, often translated as roll closures or crimped seals, are a type of packaging closure commonly used for glass bottles, particularly those containing beverages such as wine and spirits. This method involves deforming the metal cap around the neck of the bottle, creating a secure seal. Unlike screw caps which require a threaded neck, rullförslutningar rely on the mechanical interlocking of the cap and bottle rim.

The process typically involves a capping machine that applies pressure to the cap, causing it to fold and crimp inwards, forming a tight seal against the bottle's opening. This technique is effective in preventing leakage and maintaining the integrity of the contents. Rullförslutningar are often favored for their aesthetic appeal, as they can provide a clean, seamless look on the bottle. They are also generally considered easy to open, often requiring just a simple twist or pull to break the seal. The materials used for these closures are usually aluminum or tinplate, chosen for their malleability and corrosion resistance. The design of the rullförslutning can vary slightly depending on the specific application and the manufacturer's requirements.