In the rapidly evolving field of packages, performance and accuracy are important. Among them, ultra-thin aluminum foil, especially aluminum foil with 6-MICRON and 7-micron, is the key material for industry innovation. The balance of blocking, material efficiency, and continuity is ideal for packs manufacturers. This article will take a detailed look at the technical superiority of 6 micrometer and 7 Micrometer Aluminum Foil, its manufacturing cautions, and its use in the market.
Is the importance of aluminum foil in 6 micrometers and 7 micrometers
Aluminum Foil is a key material in the field of packaging for a long time because of its excellent performance in blocking water vapor, oxygen, light and pollutants. Traditionally, the typical aluminum foil in packages has a thickness of 9 to 12 microns. However, advances in rolling mill technology have made it possible to commercialize 6 micron or 7 micron aluminium foil. These flat specifications can reduce aluminum consumption by 30 to 40 percent compared to aluminum foil of 10 micrometers, directly reducing material costs and reducing environmental impacts.
6 Microns is about one-tenth the diameter of a human hair. As long as the manufacturing process is properly controlled despite being very thin, the number of pinholes in aluminum foil of 6 micrometers and 7 micrometers can meet most requirements of high barrier applications. Well.
What is the performance of aluminum foil
The first feature of the aluminum foil provides an absolute block. The thickness of 6 micrometers to 7 micrometers is shown below.
Oxygen transmittance, reasonable compound is close to zero. Suitable for products sensitive to oxygen, such as coffee, nuts, dried fruits and medicines.
Transmittance of water vapor: equally negligible, effectively protect the product from moisture easy to absorb moisture.
Light blocking: completely free from light, protecting light-sensitive content in supplements, medical devices, some food products, etc.
Maintenance of fragrance and flavor: CONTINUOUS metal layer can prevent fragrance departure and flavor loss. This is especially important for the package of gourmet coffee or food products.
7 Micron Aluminium Foil for Packaging Pouch
To fabricate 6 micrometers and 7 micrometers of aluminum foil into packaging, the following technical challenges need to be paid attention to.
Compound process: the thin aluminum foil must accurately control the glue dosage and compound tension. Whether solderless or solderless composites, the amount of adhesion should be managed strictly to prevent the occurrence of rolls or bubbles. Extrusion compound (using LDPE) is also common, but thin aluminum foil close, the parallelogram of Laura is very demanding.
Needle hole management: It is difficult to completely avoid needle hole even though modern rolling desk can produce 6 or 7 micrometers of aluminum foil with stable quality. The manufacturer shall prescribe the maximum number of pin holes to be licensed per square metre based on specific application needs. This small envelope, and small envelope, strict in blocking, requires more stringent standards.
Brittleness: thin layer of aluminum foil can be cracked more easily in the process of machining and use. The risk of cracking can be reduced by employing a highly flexible adhesive system and an appropriate sticker layer (such as nylon or PET film).
Mold removal and hot rod: thin aluminum foil should maintain sharp and in good condition mold. Thermal sticker performance depends on the selected thermal sticker layer materials - films such as LLDPE, metal-free polyethylene, etc. exhibit different thermal sticker properties after composite aluminum cladding.
Future Trends for 7-Micron Aluminum Foil
The pressure for sustainability is profoundly changing the package industry. The aluminum foil of 6 micrometers and 7 micrometers fits the trend of lightening.
Material SAVING: USING 6~7 MICROMETER ALUMINUM foil INSTEAD OF 9~12 MICROMETER ALUMINUM foil, ALUMINUM CONSUMPTION CAN BE REDUCED BY UP TO 40%.
Recyclability: The composite bags of aluminum foil still face challenges in terms of recycling, but reducing the aluminum content helps to adapt to the new recycling process in the future. The thinner the aluminum foil layer, the easier to break in the pulp process.
Lightweight: Thin aluminum foil, reducing the weight of the entire package and reducing emissions throughout the supply chain.
Major Application Market of 7 Micron Aluminum Foil
The next few terminal industry is rapidly promoting the use of 6 to 7 micrometers of aluminum foil packaging bags.
Authentic coffee: Upright bags and single packaging bags of one-way exhaust valve generally employ the composite structure of aluminum foil of 7 micrometers, controlling the packaging cost while maintaining the freshness of coffee.
Pet Food: Premium Pet food bags prevent oxidation of fats and oils with the full shielding performance of aluminum foil.
Drug PACKAGING: SINGLE-CAPACITY PACKAGING BAGS AND BUBBLE COVERS ARE ALWAYS USED BY DESIGNATING ULTRA-THIN ALUMINUM FOIL TO IMPLEMENT THE SAFETY OF CHILDREN AND CONVENIENT FUNCTION OF THE OLD AND THE WEAK.
Formula: Protein or various nutritional supplements need to extend shelf life without adding chemical preservatives.
Casual snack: A wall of nuts, dried fruit, and baked confit aluminum foil to retain the crisp texture and flavor.
Quality specifications that Flexible packaging manufacturers should pay attention to.
When purchasing aluminum foil of 6 micrometers or 7 micrometers, the packaging bag manufacturer should clarify the following technical parameters.
Plates (Usually this will be 8011, 1235, and 8079.)
State (Soft O temper is the standard choice for composite processes.)
Width tolerance (typical value is ±1mm)
This is the number of pin holes conforming to ASTM B926 standard.
Surface residual flow limit.
Range of tensile strength and elongation.
Demand for 6 micrometers and 7 micrometers of aluminum foil will continue to grow as manufacturers seek cost-saving effects and sustainability. Emerging technologies such as pinhole online inspection system and advanced rolling lubrication are expected to promote the flattening of aluminum thin. As a pack maker, acquiring the processing technology of thin aluminum foil gives it a great competitive advantage in an increasingly efficient market.
6 micron and 7 micron aluminum thin provides the ideal combination to block the performance, economy and environmental responsibility of bag manufacturers. Processing has its challenges, but benefits far outweigh the technical difficulties to be overcome. As brand owners constantly demand lighter, more environmental protection effect non-discounted packaging, thin aluminum foil will become the standard specification of the industry. Manufacturers that optimize their manufacturing processes based on 6 to 7 micrometers of aluminum foil will lead the development of next-generation package solutions.
