Aluminium Foil For Pharmaceutical

2021-12-15

Aluminium foil for pharmaceutical 8011, 8021 and 8079 should have uniform thickness, no wrinkles, creases, pinholes and other defects. Aluminum foil is non-toxic, odorless, has excellent electrical conductivity and light-shielding properties, has extremely high moisture resistance, gas barrier properties and taste retention, and is light in weight. It has a certain strength and good printability, and various characters or patterns can be printed on it. Pharmaceutical packaging aluminium foil materials should meet the requirements of drug safety, adaptability, stability, functionality, protection and convenience.

The testing of breaking strength is one of the basic testing items for the performance of aluminium foil for pharmaceutical, and it is also an indicator that major pharmaceutical companies pay attention to. It has a direct impact on the preservation and quality of drugs. Bursting strength refers to the maximum pressure in the direction perpendicular to the aluminium foil when the elastic film crushes the area of the circular specimen when the pressure is applied by the hydraulic system. Since the compliance of the pharmaceutical aluminum foil directly affects the quality of the medicines and the lives and health of patients, it is urgent to test the burst strength of the medicines. A large burst strength index means that the quality of the drug during the shelf life is more safe. For pharmaceutical aluminium foil product, burst resistance is only one of the testing indicators. In addition, there should be testing of sealing properties, pinholes, peeling force and other indicators, and non-standard customization is acceptable.

The pinhole degree is a key indicator to evaluate the quality of aluminium foil for pharmaceutical. It mainly affects the barrier properties of packaging materials and is particularly important for medical aluminum foil. Pinholes are a defect that is difficult to avoid during aluminum foil processing. According to our water vapor transmission test on pinhole areas of pharmaceutical aluminum foil, it can be proved that smaller pinholes (≤0.2mm) have an impact on medicinal aluminium foil. The effect of water vapor barrier is negligible. This should be attributed to the "blocking" effect of the adhesive. Excessively large holes are easy to rupture the adhesive film and make the holes lose their barrier properties.

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