In the beginning, the mask foil pouch packaging using mainly reflected demand-driven functionality. The back of the mask usually have such words "avoid direct sunlight, placed in a dry place at room temperature and ventilation", which is also reflected in order to maintain the activity and the effect of the mask, the mask packaging must meet the following basic functions, a light-shielding property; 2. . barrier; 3 moisture resistance; 4 cooling properties. Overall mask bag manufacturers, aluminum foil bags can basically meet the requirements of the above points. But in the specific one respect, than aluminum bags aluminum bags have a greater advantage, such as aluminum bags has completely dark nature, aluminum bags only certain shading; and cooling of the barrier, the pure aluminum bag also has obvious advantages. In addition, aluminum foil bags also possesses a variety of characteristics: 1. Air barrier performance, oxidation resistance, waterproof, moisture-proof. 2. High mechanical properties, high blasting performance, strong anti-puncture tear resistance. 3. High temperature (121 ℃), low temperature (-50 ℃), oil, Paul Hong good performance. 4. Non-toxic, tasteless, with food, pharmaceutical packaging hygiene standards. 5. The heat-sealing performance, flexibility, good barrier properties. No wonder, structural changes in aluminum bags aluminum bags to the transition began to appear on the market recently. Intense competition in the mask market has spread to mask bag manufacturers packaging industry. Structural change driven by high-end mask has become a trend now, in addition to excellent performance foil bags reflect the most intuitive is reflected texture. Relative to aluminum, aluminum has a good metallic, silvery-white, anti-luster property; aluminum characteristic soft, according to the requirements of different material and thickness of the composite products, high-end products in line with the pursuit of the thick texture, so that the high-end mask from the packaging to be reflected. Mask bags from basic functional requirements of the beginning, but now the high-end performance and texture of synchronization requirements, aluminum bags aluminum bags to change, structural change is part of the requirements of the new era mask packaging industry.