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The internal and external structural characteristics of the aluminum-plastic gland can be described in detail as follows:
1. Internal structural features:
Material: The inner cover is made of plastic. The plastic material is significantly lighter, which makes the entire aluminum-plastic gland more convenient to carry and use without placing any additional burden on the user. Whether faced with chemical ingredients in cosmetics or acid-base substances in the external environment, the plastic inner cover can show good stability and ensure product safety. This corrosion resistance not only extends the service life of the aluminum-plastic gland, but also ensures that the quality of the interior products is not compromised.
Sealing: The plastic inner cap is carefully designed to fit tightly into the bottle mouth, forming a solid sealing barrier. This barrier effectively prevents the intrusion of external air, moisture, dust and other impurities, creating a safe and stable storage environment for the interior products. The plastic inner cap undergoes precise size control and surface treatment during the manufacturing process to ensure a perfect match with the bottle mouth. At the same time, the softness and elasticity of the material itself also provide it with good sealing performance. When the plastic inner cap is screwed onto the bottle mouth, it can generate enough pressure to completely seal the gap between the bottle mouth and the inner cap, thereby preventing any impurities from entering.
2. External structural features:
Material: covered with aluminum oxide cover. The aluminum oxide cover has excellent corrosion resistance, heat resistance and aesthetics. It can resist the erosion of chemical substances such as acids and alkalis, protect the internal products from chemical corrosion, and at the same time improve the quality and appeal of the product.
Oxidation treatment: The surface of the aluminum cover of the aluminum-plastic gland has been oxidized to form a dense oxide film. This oxide film not only improves the corrosion resistance and heat resistance of the aluminum cover, but also enhances its hardness and wear resistance. In daily use, even if it is slightly scratched or bumped, it will not easily leave marks or damage. Because the aluminum oxide cover itself has strong anti-oxidation ability, coupled with the protective effect of the oxide film, the aluminum-plastic gland can better maintain product quality and extend the service life of the product.
Aesthetics: The colors of the aluminum oxide covers are beautiful and diverse, and can be personalized according to customer needs. Whether it is a simple solid color design or a complex pattern decoration, it can be achieved through different printing processes and coating treatments. This makes the aluminum-plastic gland more fashionable and novel in appearance, and can better meet the aesthetic needs of consumers.
Summary: The internal and external structural characteristics of the aluminum-plastic gland are mainly reflected in its material, sealing and aesthetics. The inner cover is made of plastic, which is lightweight, corrosion-resistant and has strong sealing properties; the outer cover is covered with aluminum oxide, which has been oxidized and has excellent corrosion resistance, heat resistance and aesthetics. This design of internal and external structures allows the aluminum-plastic gland to effectively protect the interior products while improving the product's sense of class and appeal.