Kopparkapslar

Kopparkapslar are small sealed vessels made from copper or copper alloy, designed to protect contents from moisture, air, and light. They are typically cylindrical or capsule-shaped, with a removable or screw-on cap. To prevent direct contact between reactive contents and the metal, an inner lining of wax, resin, or inert plastic is sometimes used.

Design and materials vary, but the common features are a tight seal and a thin copper shell that provides corrosion resistance and malleability. Some versions are made with a threaded cap, while others use a friction-fit closure. The size can range from a few millimeters to a couple of centimeters in diameter.

Uses of kopparkapslar have spanned several fields. In early pharmacy and perfumery, tiny copper capsules were used to transport powders and volatile substances. In geology and mineralogy, they served as small sample containers for field work. Archaeological contexts sometimes reveal copper capsules that were placed with offerings or messages during burial rites, taking advantage of copper’s durability underground. In modern craft and art, copper capsules are used for secure storage of pigments, powders, or micro-sculptures.

Manufacturing involves forming a thin copper shell, sometimes drawing or stamping, followed by sealing the contents with a cap and an inner lining to prevent reaction. With the rise of plastics and glass containers, the use of kopparkapslar has declined, though they remain of interest for archival, historical, or specialty applications.

Safety and handling focus on avoiding reaction with acids, and ensuring a proper seal to prevent oxidation or leakage.