Bottle closer caps are used to seal plastic bottles, forming a protective barrier to prevent contamination and maintain product freshness. They are cost-effective, lightweight, and versatile, with popular types like polypropylene (PP) and polyethylene (PE). Caps are designed for easy opening and reclosing, often include tamper-evident features, and are typically recyclable. Common applications include water, soft drinks, condiments, and pharmaceuticals. Key Functions • Contamination Prevention: Caps create a seal that shields the contents from dust, dirt, and microorganisms. • Leak Prevention: They form a tight barrier to prevent the liquid from leaking out of the bottle. • Product Preservation: The seal helps preserve the freshness and integrity of the product inside.