It is self-evident how important the mask packaging bag is to the mask. Compared with the fancy decoration on the surface, the storage and protection functions of the packaging bag are actually more important. But in fact, many people neglect this point. To a large extent, this is because they don't understand the packaging bag itself. First of all, let's learn about the relevant knowledge of aluminum foil bags
. Aluminum foil bags are divided into two types: aluminum-plated bags and pure aluminum bags. The aluminum-plated bag is to coat high-purity metal aluminum uniformly on the plastic film under high-temperature vacuum state. The pure aluminum bag is made of pure metal aluminum, and combined with the plastic, it can improve the plastic's barrier properties, sealing properties, fragrance retention, shielding properties and other functions. Aluminum foil bags and aluminum-plated bags can be distinguished in the following ways: 1. Watching: Because the brightness of aluminum foil is not as bright as aluminum-plated, the reflectivity of aluminum foil is not as good as aluminum-plated film. Aluminum-plated bags can illuminate people's shadows, but Except for the matte film aluminized. The appearance of aluminized matting film is very similar to that of aluminum foil. You can block the mouth of the bag and look inside the bag through strong light. The inside of the aluminum foil bag does not transmit light, and the light-transmissive one is the aluminum-plated bag. 2. Hand feeling: The hand feeling of the aluminum foil bag is thick and stiff, harder and heavier. The hand feeling of the aluminum foil bag is lighter and softer than that of the aluminum foil bag. 3. Folding: The aluminum foil bag is easy to fold to produce dead folds and dead marks, and the aluminum-plated bag will not fold into dead folds and dead marks, and it will rebound soon. 4. Twisting: After the aluminum foil bag is twisted, it is not easy to coalesce and rebound, and the aluminum layer will break. After the aluminum-plated bag is twisted, the kinks will bounce away quickly, and the aluminum layer will not have obvious cracks. 5. Fire: Aluminum foil is not easy to burn with a fire point, and the aluminum layer will be rolled back. After burning, the aluminum foil packaging will leave gray aluminum slag. When the aluminized film is fired, different plastic films can be burnt, and there is no residue of aluminum slag. Function-driven mask packaging In the beginning, the use of aluminum foil bags in mask packaging was mainly reflected in functional demand-driven. The back of the mask usually has the words 'Avoid direct sunlight, place it at room temperature and in a ventilated and dry place. Barrier property; 3 moisture resistance; 4 cooling property. Generally speaking, aluminum foil bags can basically meet the above requirements. However, in a specific aspect, pure aluminum bags have greater advantages than aluminum-plated bags. For example, pure aluminum bags have complete light-proof properties, while aluminum-plated bags have only a certain degree of light-shielding; in terms of barrier properties and cooling properties, pure aluminum Aluminum bags also have obvious advantages. In addition, aluminum foil bags also have a variety of characteristics: 1. Strong air barrier performance, anti-oxidation, waterproof, and moisture-proof. 2. Strong mechanical properties, high blast resistance, strong puncture and tear resistance. 3. High temperature resistance (121℃), low temperature resistance (-50℃), oil resistance and good fragrance retention performance. 4. Non-toxic and tasteless, in line with food and drug packaging hygiene standards. 5. Good heat sealing performance, flexibility, and high barrier performance. No wonder, the structural changes from aluminum-plated bags to pure aluminum bags have recently begun to appear on the market. The fierce competition in the mask market has spread to the packaging industry. Structural transformation driven by high-end Nowadays, high-end facial masks have become a trend. In addition to excellent performance reflection on aluminum foil bags, the most intuitive thing is the reflection of texture. Relative to aluminum plating, pure aluminum has a good metallic texture, silvery white, and has anti-gloss properties; aluminum has soft characteristics, and products with different composite materials and thicknesses can be customized according to requirements, which meets the pursuit of high-end products for heavy textures and makes high-end masks This is reflected in the packaging. From the initial basic functional requirements to today's high-end requirements for performance and texture, it is the transformation from aluminized bags to pure aluminum bags, which is a structural transformation requirement of the mask packaging industry in the new era.
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