wine natural cork

What is a natural cork?

Harvesting: Mature cork oak trees are harvested. Only the bark is stripped off while the tree itself is left intact, allowing the cork oak to regenerate.

Bark treatment: The stripped cork bark is air-dried and boiled. Air-drying helps remove excess moisture and impurities, while boiling softens the bark and kills any microorganisms.

Cutting and sorting: The processed cork bark is cut into small pieces and sorted based on size. Different-sized cork pieces are used to produce cork stoppers of various specifications.

Processing and manufacturing: The cork pieces are placed in rotating machines for processing. These machines saw the cork pieces into cylindrical shapes and shape them to the desired form of the cork stopper. Further processing, such as polishing and lubrication, is carried out to ensure a smooth surface and easy insertion into the bottle neck.

Quality control: Manufactured cork stoppers undergo rigorous quality control checks. These checks include measurements of size, density, structure, and other key parameters to ensure they meet quality standards.

Packaging and grading: Qualified cork stoppers are graded and packaged accordingly. Grading is typically based on factors such as appearance, elasticity, and the extent of defects.

Through this manufacturing process, natural cork is produced and used to seal wine bottles, ensuring the quality and preservation of the wine. Natural cork is widely used in the wine industry due to its renewable nature, breathability, and elasticity.

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