Aluminum Foil 8079 Laminate

Henan Gnee New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of aluminum foil 8079 laminate in China. With abundant experience, we warmly welcome you to wholesale high quality aluminum foil 8079 laminate in stock here from our factory. Good service and reasonable price are available.

High-barrier packaging materials generally refer to high oxygen-barrier materials (such as PA, EVOH, etc.) for food composite films, but for pharmaceutical packaging, most pharmaceuticals are sensitive to water vapor but not to oxygen. The barrier properties of packaging are usually moisture-proof.

Medicine is a special commodity with high added value and high safety and reliability requirements. Except for the packaging of traditional Chinese medicine pieces and low-grade granules, the composite film of medicine packaging is basically made of pure aluminum foil composite material, while food packaging is generally still made of transparent or low-grade granules. Aluminized packaging mainly.

Due to the high barrier properties of aluminum foil composites, the side penetration that could have been neglected can no longer be ignored. In addition to considering the penetration through the packaging material, the packaging bag made of aluminum foil composite material should also consider the penetration of the heat-sealed edge of the packaging bag. The heat-sealed edge should have sufficient width, and the heat-sealing material used must have a certain Barrier properties. The author once took an aluminum foil composite film with a water vapor transmission rate of 0.25g/m2·24h (cup method 38℃RH90%) to make a bag, and sealed the fully dried anhydrous calcium chloride in the bag to measure the weight gain, which lasted for a period of time. In 2010, the water vapor transmission rate of the aluminum foil composite film was 0.0014 g/m2·24h when the sealing edge width was 8 mm, and the water vapor transmission rate of the aluminum foil composite film was 20 mm when the sealing width was 20 mm. The passing rate is only 0.0008 g/m2·24h. It can be seen that the sealing edge width has an effect on the barrier properties of the aluminum film composite bag. Further experimental results show that when the thickness of the aluminum foil is more than 15µm, the barrier property of the aluminum foil composite bag is completely determined by the width and quality of the edge sealing.

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