The drug issue is a major livelihood issue that concerns the lives and health of the people, and ensuring drug safety is a technical issue. At present, the forms of pharmaceutical packaging are diversified. Aluminum blister foil has good barrier properties, of which the metal crystal structure is dense, and the cleanliness is high. Therefore, PTP pharmaceutical packaging mostly uses aluminum foil as the base material.
The pharmaceutical blister foil is mainly used for aluminum-plastic blister packaging of pharmaceutical tablets, capsules, pills, etc., featuring good light-shielding performance, moisture-proof performance, gas-retaining performance and taste-retaining performance. The aluminum foil is heat-sealable, printable, easy to puncture, which can be heat-sealed with PVC, PVDC and other hard plastic sheets.
Pharmaceutical PTP aluminum foil is generally made of aluminum alloy, which has excellent mechanical properties and pinhole performance, and its roughness and gloss are better than pure aluminum foil, which is conducive to high printing quality. For example, as the types of printing colors increase, the requirements for the surface quality of pharmaceutical aluminum foil are getting higher and higher.
The aluminum foil used in PTP is non-toxic and tasteless, which does not cause any harm to the human body, and has good electrical conductivity and sunshade performance. Neither metallized films nor coated special films for pharmaceuticals can completely replace aluminum foil. Aluminum foil not only has the above advantages, but also has light weight, certain strength and is very convenient to carry, so pharmaceutical companies will choose aluminum foil as drug packaging materials.
Pharmaceutical aluminum foil has a protective effect on medicines, so there are higher requirements for the control of details in each production process, such as the type of alloy selected, rolling process, pinhole, tempers, shape, surface quality and mechanical properties.
Therefore, in order to strictly ensure the quality of pharmaceutical aluminum foil, the country has strictly formulated corresponding standards, requiring relevant aluminium blister foil manufacturers to test their barrier properties, pinholes, burst resistance, etc.