Surface treatment methods for medicinal aluminum tubes

1、 The importance of medicinal aluminum tubes

Medicinal aluminum tubes are a common packaging material in the pharmaceutical industry, widely used in the packaging and transportation of oral preparations, folic acid, aminophylline, hemorrhoid ointments, eye drops, and other drugs. Due to its ability to prevent the erosion of drugs by air, water vapor, and light, medicinal aluminum tubes ensure the quality and safety of drugs, thus playing an irreplaceable role in the pharmaceutical industry.

2、 Surface treatment methods for medicinal aluminum tubes

To ensure the safety and long-term stability of medicinal aluminum tubes, special surface treatment methods are required.

1. Cleaning treatment

During the manufacturing process, there may be some impurities and oxides on the surface of medicinal aluminum tubes, so cleaning treatment is required. Firstly, clean the oil and dirt on the surface of the medicinal aluminum tube; Then use chemical agents or water cleaning agents for cleaning, and finally clean with clean water.

2. Oxidation treatment

Oxidation treatment can prevent metal oxidation on the surface of pharmaceutical aluminum tubes, improve surface corrosion resistance and aesthetics. Oxidation treatment can be carried out through two methods: electrochemical oxidation and chemical oxidation.

Electrochemical oxidation is the process of placing medicinal aluminum tubes in an electrolytic cell, adding a certain concentration of oxidant to the electrolytic solution, and generating a ceramic film on the surface of the medicinal aluminum tubes through the action of an electric current. Ceramic film can prevent metal oxidation, improve the surface hardness and corrosion resistance of pharmaceutical aluminum pipes. Chemical oxidation is the process of coating a solution containing an oxidant on the surface of a medicinal aluminum tube. The oxidant in the solution can react with the metal on the surface of the medicinal aluminum tube to form an oxide film.

3. Coating treatment

In order to improve the corrosion resistance, rust prevention, and aesthetics of the surface of medicinal aluminum tubes, coating treatment can be applied to the medicinal aluminum tubes. Coating treatment can use materials such as epoxy resin, acrylic resin, silane coupling agent, etc. Epoxy resin has excellent corrosion resistance and solvent resistance, which can protect the surface of pharmaceutical aluminum pipes from environmental erosion. Acrylic resin has excellent radiation resistance and thermal insulation performance, and can be used in high temperature and high radiation environments.

3、 Summary

The surface treatment method of medicinal aluminum tubes is crucial to ensure the safety and long-term stability of their use. Cleaning, oxidation, and coating are common surface treatment methods for medicinal aluminum tubes. When using medicinal aluminum tubes, it is necessary to strictly follow relevant standards and requirements to ensure the quality and safety of the drug.