Because of its unique advantages and a wide range of application scenarios,aluminium foil ziplock bag has become the most popular bag type of this bag is usually aluminum foil and other materials composite, with good barrier, preservation and sealing, suitable for the packaging of a variety of products. It has the following advantages:
（1）Good barrier performance: aluminum foil layer can effectively block air, moisture, light, etc., reduce the oxidation and corruption of food or other sensitive products, extend the shelf life.
（2） Long service life: Due to the good sealing performance of the trilateral sealing design, it can effectively prevent the external air and microorganisms from entering the interior of the vacuum bag, thus extending the service life of the vacuum bag. This is very important for products such as food and medicine that require long storage.
（3）Excellent sealing: The three-sided sealing design means hot sealing at three edges, leaving only one opening to fill the product, and then closing the opening after the product is filled. Such a design ensures the high sealing of the package, further preventing the intrusion of air and moisture. Compared with the unilateral sealing method or the bilateral sealing method, the sealing effect of the tripartite sealing design is more reliable.
（4）Flexible customization: the three-sided sealing aluminum foil bag can customize the size, shape and thickness according to the need to meet the packaging needs of different products. In addition, the surface can also be printed to facilitate the brand promotion and product information transmission.