Full introduction to aluminium 8000 series

  Classification of 8000 series aluminium foil

  Aluminium foil is a hot stamping material which is directly calendered into a thin sheet of metal aluminum. Its hot stamping effect is similar to that of pure silver foil stamping, so it is also called fake silver foil. According to the thickness, the aluminum foil can be divided into a thick foil (thickness of 0.1 to 0.2 mm), a single zero foil (thickness of 0.01 mm and less than 0.1 mm/), and a double zero foil (0.005 to 0.009 mm of aluminum foil); According to the shape, the aluminum foil can be divided into a rolled aluminum foil and a sheet aluminum foil; according to the state, it can be divided into a hard foil, a semi-hard foil and a soft foil. According to the surface state, the aluminum foil can be divided into a light aluminum foil and a double-sided aluminum foil. According to the alloy series, it can be divided into 1 series, 3 series, 8 series, among which the most widely used are 8011, 8079 and 8021 aluminum foil products.

  8000 series aluminum foil features

  8021, 8079 and 8011 aluminum foil for sale is a key product of aluminium 8000 series. Due to its excellent sealing, plasticity and corrosion resistance, it is widely used in food and beverage, cigarette medicine, household daily use and other fields.

  The appearance of aluminum foil is beautiful, the gloss is high, and it has the advantages of being clean and hygienic. After printing as a packaging material, the printing effect is better than other materials. As a packaging material, aluminum foil can block the growth of microorganisms such as bacteria, is non-toxic and harmless, has no volatility, does not deform in high temperature or low temperature environment, can also isolate sunlight line irradiation, aluminum foil has high tensile strength, but tear strength is small. Therefore, it is extremely convenient to use in the opening of some daily packaging.

  8 series aluminum foil application

  8079, 8011 and 8021 aluminum foil processing applications are very wide, such as beer labels, cables, pharmaceutical packaging, household foil food packaging, bottle cap materials, heat sealing foil, etc., almost everywhere in daily life. Especially after the aluminum foil and the paper are processed by the composite, the packaging performance of the 8000 series aluminum foil is further improved, and the application market of the aluminum foil is broadened, especially in the outer packaging of the popular cooked food in recent years, the composite material is introduced once. Well received.

  With the improvement of living standards and the increasing number of modern consumer goods, the requirements for new and modern packaging are increasing. The 8xxx series aluminum foil and other materials are processed together to develop higher quality packaging materials, which is the next growth in aluminum foil consumption. direction. As a perfect packaging material, aluminum foil will have a broader prospect in many future fields.

Why food is packed in aluminium foils

Why food is packed in aluminium foils? Traditionally, tin foil was the main food packaging foil, but now it is replaced with aluminum foil. This is because most of the aluminium foil papers nowadays are manufactured using vacuum coating technology. The cost is relatively low and the chemical properties are relatively stable. Most of the foil papers are manufactured by mechanical calendering. The price is higher and the use is far less extensive than that of aluminum foil paper. A food packed in aluminium foil is protected against light, moisture and heat. Let’s take chocolate for example.

food packaging aluminium foil manufacturers

Chocolates should be eaten immediately after being unpacked. If you want to save them, it is best to place it at a temperature of 12~18 degrees to avoid light, water and odor. Under such conditions, the oil crystals in the chocolate can be kept stable, the product is firm and brittle, and the appearance maintains a bright color. The storage time is generally more than 4 weeks, and the quality dark chocolate can be stored for a longer period of time than milk chocolate and white chocolate.

The chocolates produced in the factory usually have a shelf life of about 1 year, and those hand-made fresh chocolate desserts are best eaten as soon as possible. Although chocolate is not prone to spoilage, when the temperature reaches 20 degrees Celsius, the composition of the cocoa butter inside will melt and begin to separate. Once frozen, it will condense a white creamy substance on the surface, affecting the flavor. Therefore, chocolate is usually wrapped in food packaging foil paper and kept in a refrigerator.

Second, food packaging aluminium foil manufacturers says that aluminium foil packaging provides chocolates with a perfect environment with a maximum relative humidity of 65%. The water vapor in the air has a great influence on the quality of the chocolate. The special storage time is long. The chocolate products that have not reached the seal are prone to the so-called frosting phenomenon, and even deteriorate after the water vapor is absorbed. Winter is the best season for chocolate tasting. If the temperature is below 20 degrees Celsius, just store it in a cool, ventilated place.

When the summer temperature is high, put chocolate packed in food packaging foil in the lower refrigerator compartment of the refrigerator and do not put chocolates in the freezer. Also, when you just remove the chocolate from the refrigerator, do not open it immediately, let it warm back to room temperature and then open it. The outer layer of the chocolate will not condense the water mist to affect the appearance and taste.

Aluminium foil for cigarette packaging

  An aluminium foil for cigarette packaging is the most commonly used composite film, usually containing pure aluminum (AL) and aluminum (VMPET). Its characteristics are as below.

  1. The aluminium as packaging material has a good mechanical strength, light weight, no thermal adhesion, good metallic luster, good light-shielding property, strong reflection ability to light, not easy to be corroded, good barrier property, moisture-proof and waterproof, airtight and nice fragrance.

  2. The packaging aluminium foil for cigarettes are metallic luster, gas barrier property, and low adhesion viscosity. After the composite processing, the aluminum plating layer transfer phenomenon is likely to occur.

  3. The aluminium foil for cigarette packaging has basically replaced asphalt moisture-proof paper because of its high softness, decoration and protection. It has become the leading packaging material for cigarette packaging, and will gradually withdraw the newly emerging aluminum-plated paper from the field of cigarette packaging.

  The combination of cigarette aluminium foil rolls adopts the wet bonding process, which has a better production efficiency, economy and environmental protection than the dry method and the hot melt bonding. It uses a water-soluble or water-dispersible adhesive to bond aluminum foil to a porous, highly hygroscopic liner, eliminating the problems associated with the use of enamel solvents in dry-laid applications, such as environmental pollution, residual solvents, additional waste gas recovery and discharge devices etc., so that the production process and products are more hygienic and safe.

Features of excellent packaging aluminium foil

  Aluminium foil packaging and packing are more and more popular in industries like food process, pharmaceutics and cosmetics. Feature of excellent packaging aluminium foil are as below.

  First, the surface cleanliness of an aluminium foil packing should be high, and the surface should be free from oily dust, and the surface tension should be high. When using a simple method, that is, when testing with distilled water, it should be completely wetted, and the surface tension should be above 72 mN/m. If the oil is severe, the composite fastness will not be high, especially after high temperature cooking, delamination will occur.

aluminium foil packaging

  Second, the number of pinholes should be small. Originally, aluminium foil rolls should be the best barrier material, but if there is a pinhole, the barrier effect will be greatly reduced. Gas, moisture, and light will penetrate directly and quickly, and the contents will deteriorate quickly. In general, the thicker the aluminum foil, the less the number of pinholes.

  Third, the texture of the aluminum foil packaging should be soft, not easy to break when folded, and have good toughness. Purchased aluminum foil should be stored in a dry state, and should not be placed for too long, should be used as fresh as possible to prevent aluminum foil from absorbing moisture and deterioration.