Smooth cover aluminum cover oil bottle perfume bottle aluminum ring
Quality aspect
Light weight: The low density of aluminum makes aluminum caps light in weight. This not only reduces costs during transportation, but for some portable products, such as the lid of a small cosmetic bottle, it is also easier to carry and use, and will not add too much burden to the overall product.
Strength and durability: Although aluminum is light, its strength and hardness can be significantly improved by alloying treatment (such as adding copper, magnesium, manganese and other elements to make aluminum alloys). Such aluminum cover is not easy to deform or damage during normal use and transportation, can maintain good appearance and function for a long time, and improve the service life of the product.
Purity effect: The purity of aluminum is different, and the quality is also different. Higher purity aluminum, better corrosion resistance, but relatively low strength; And aluminum containing certain alloying elements, although corrosion resistance may be slightly reduced, but the overall performance is better. Therefore, according to different use scenarios, it is important to choose the appropriate purity and alloy composition of aluminum.
Performance aspect
Corrosion resistance: Aluminum in the air surface will quickly form a layer of dense alumina protective film, this film can effectively prevent aluminum from further oxidation and corrosion. Therefore, the aluminum cover is suitable for packaging some environmentally sensitive products, such as food, drugs, cosmetics, etc., to ensure that the product is not eroded by external substances during storage and use, and to extend the shelf life of the product.
Sealing: Good material ductility enables aluminum caps to be machined into a variety of precise shapes to meet different sealing needs. For example, the high fit with the bottle mouth can effectively prevent the leakage of the contents or the entry of outside air and water, which is particularly critical for liquid or powdered products that need to be sealed.