Five basic requirements for adhesives for pharmaceutical aluminum foil packaging:

1. Good safety and health performance

Adhesives used in the aluminum foil packaging of medicines must have good safety and sanitation properties, should be non-odor and non-toxic. If the medicines directly contact the adhesives, they should also be non-corrosive. Because the products protected or packaged by the aluminum foil packaging materials for pharmaceuticals are directly imported, not only the substrate must be tasteless, odorless, and non-toxic, but also the adhesives used must have the same performance. Therefore, the raw materials, auxiliary materials and solvents for the production of adhesives should have Safety and hygiene.

2. Excellent bonding performance

Due to the different materials of pharmaceutical aluminum foil packaging materials, adhesives are used to bond them. The adhesive must have good adhesion to materials of different materials. There are a wide variety of substrates used in pharmaceutical aluminum foil packaging composite materials, with different properties, such as paper, fabric, aluminum foil, and plastic. There are many brands of plastics, and their surface characteristics and molecular structure are different. Faced with so many complex materials, the adhesive must have the ability to bond more than two different materials at the same time.

3. Good heat-resistant aluminum foil packaging materials for medicines include materials that must be resistant to high temperatures in packaging processes such as aluminum foil blister packaging medicines. The aluminum foil and polyvinyl chloride can be thermally compressed under the high temperature condition of 150℃-220℃. Sealed retort food, there are also packaging materials that require high-temperature retort and sterilization. The adhesive is a test of high temperature.

4. Excellent chemical resistance and medium resistance. The chemical composition of the drug itself is very complex, and it should be resistant to high temperature treatment and long-term storage after packaging. The perfection of aluminum foil packaging materials for medicines must be maintained. In addition to the excellent chemical resistance and media corrosion resistance of the substrate itself, the stability of the adhesive is also very important. If it does not resist the corrosion of various media and chemical components, it will cause the layer of the composite to peel off and lose its function. .

5. Good soft performance. When using flexible packaging composite materials to package medicines, it is important that the packaging is soft and easy to carry. It should be foldable, and the adhesive must also have this performance. If the rubber mucosa is hard, brittle, and unfoldable, and the substrate does not match, it will lose the performance of flexible packaging.