Zip lock bag, also known as Zipper bag, self-sealing bag and dense bag, are a modern packaging solution that combines traditional bags with a convenient zip design. It is usually made of multi-layer film materials such as polyethylene (PE), polypropylene (PP), nylon, aluminium foil, etc. through a lamination process, and is equipped with a reclosable zip seal at the bag opening. This design not only facilitates the filling and removal of contents, but also greatly enhances the sealing and freshness retention capability of the package.
Features
- Self-supporting: Especially for self-supporting zip-lock bags, the bottom design allows the bag to stand on its own without support, which is convenient for display and storage, and enhances the attractiveness of the product on the shelf.
- Strong sealing: The zip design ensures tight sealing of the package, effectively preventing the intrusion of air, moisture, dust and external pollutants, prolonging the shelf life of the product, especially for food, pharmaceuticals and other commodities requiring high sealing requirements.
- Repeated opening: Users can easily open and reseal it for multiple use, which is both convenient and economical.
- Anti-theft performance: compared with ordinary plastic bags, the seal of stand-up zip bags is more difficult to be opened illegally, increasing the safety of products.
- Barrier performance: Multi-layer composite materials provide excellent oxygen and water vapour barrier, which is especially important for products that need to be protected from oxidation or kept dry.
- Durability: strong resistance to puncture and tear, can withstand a certain degree of external impact without easy to break, suitable for long-distance transport and storage.
- Temperature adaptability: some of the materials of the zip-lock bags can withstand high or low temperature environment, suitable for frozen food or products that require heat treatment.
- Aesthetics: the surface can be printed, used for brand promotion and product information labelling, to enhance the brand image.
Applications
- food industry: such as beef jerky, nuts, baked goods, coffee beans, etc., not only to ensure the freshness of the food, but also easy to use for consumers.
- medicine and health: used in the packaging of drugs, health products, medical devices, to ensure the health and safety of the product and the stability of the utility.
- daily chemical products: shampoo, shower gel, cosmetic samples, etc., easy to travel and carry, and good sealing to prevent leakage.
- Electronic products: moisture-proof and dust-proof packaging for small accessories, circuit boards, data lines and other sensitive electronic devices.
- Agriculture: encapsulation of agricultural materials such as seeds, fertilisers, pesticides, etc. to prevent moisture deterioration.
- Industrial products: packaging of parts, tools and instruments to protect products from physical damage and environmental factors.
- Special industries: aerospace, military and other areas with special requirements for packaging to meet their needs for sealing and temperature resistance.
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