Aluminum is the most commonly used metal, aluminum material does not rust, its oxide is non-toxic, good shading, excellent moisture and gas barrier, good processing performance, no elasticity, high thermal conductivity, has good ductility, airtight, has full protection for drugs. As a drug packaging, aluminum has the advantages of effectiveness, safety, stability (physical, chemical, microbial), uniformity, airtight, and no pollution. Aluminum packaging with internal spraying does not react with packaged drugs, does not adsorb drugs, and does not change the performance of drugs. In addition, aluminum packaging also has a certain strength, heat and cold resistance, light weight, shading, easy cleaning, easy sterilization and disinfection treatment. Therefore, aluminum hose is a very attractive container for the packaging of medicinal ointment ointment gel. It is easy to control the dosage, has the characteristics of good repeated sealing, and has full protection for the product. The danger of contamination of the ointment in the aluminum hose tube through internal spraying is also very small. Aluminum hose is also easy to use, storage, transportation, environmental protection, durable, beautiful, easy to identify and other functions. In addition, it has the characteristics of simple manufacturing process, not broken, very suitable for modern high speed automatic operation filling. The packaging form of aluminum hose can adapt to a variety of harsh circulation conditions including climate, mode of transport, circulation object and circulation cycle, can fully adapt to the circulation area of various extreme temperature, humidity, temperature difference, with enough vibration resistance, anti drop. FDA once stipulated that the packaging of drugs must be the standard of uniformity, efficacy, quality and purity of drugs within the specified shelf life. The high-quality aluminum hose produced by Wuhan Xiuyuan Technology Co., Ltd. has been proved to meet the above requirements through l8 months and ongoing tests.
Aluminum hose plastic is a synthetic polymer, with light weight, collision resistance, toughness is not easy to break. But plastic in the air permeability, moisture permeability, heat resistance, chemical stability, physical stability and other aspects of poor, in addition to the plastic composition contains some additives such as stabilizer, plasticizer, antioxidant, lubricant, filler, etc., these additives may migrate into the drug solution, and the drug in the solution can also be absorbed by the plastic, Thus, the stability of the preparation and the effectiveness of the drug are affected. Therefore, plastic containers should not be used for a long time, especially for drugs with unstable chemical properties. If necessary, physical, chemical and biological toxicity experiments should be carried out before the use of plastic containers to ensure safety. Compared with plastic hose, aluminum hose has the outstanding advantage that there is no suction phenomenon, which can avoid the paste and air contact deterioration caused by suction air, thus affecting the quality and efficacy of the paste. Its barrier performance and shading performance are obviously better than plastic hose. And aluminum hoses with internal spraying have less impact on the stability and effectiveness of internal medicine than plastic hoses.

Compared with composite hose, aluminum hose has the outstanding advantage of excellent air tightness. Because the aluminum is dense, and the aluminum tube is a single material once extrusion forming, there is no possibility of leakage at the welding joint of different materials of composite hose. On the contrary, the manufacturing process of composite hose is complex, with longitudinal welds of pipe body welding, and the injection of two different materials of pipe body and pipe shoulder. Due to the instability of the process, it is difficult to reliably ensure the air tightness of each individual product in mass production. In addition, the composite pipe also has the phenomenon of "rebound", which leads to a large amount of unpurified air entering the pipe and contacting the drugs directly. It is inevitable that secondary pollution, which is taboo for drugs, may occur. In addition, the composite pipe cannot be sterilized at nearly 500℃ during the production process. In particular, there are still considerable difficulties in its recycling. It is difficult to degrade in nature and does not meet the requirements of green environmental protection. This is the fatal shortcoming that restricts its further development.
Therefore, it is clearly stipulated in the outline of the development Plan of the pharmaceutical packaging industry that "the lead tin tube and low-quality plastic tube should be completely eliminated in the packaging of ointment preparation, and the aluminum tube with internal spraying should be developed". If human society is to survive, it must quickly change the traditional mode of production which consumes a lot of natural resources and destroys the environment. With the growing call for green protection, the recycling of packaging materials is becoming more and more important and will be more noticeable. Aluminum has the great advantage that it is very easy to recycle, and the remelting of waste aluminum to produce recycled aluminum ingots requires only 5% of the energy required to convert alumina into raw aluminum ingots.

Packaging is an indispensable part of medicine, only by choosing the appropriate packaging materials and packaging methods, can we effectively ensure the quality of medicine and the safety of the general public. Internal drug packaging refers to the packaging materials and containers that come into direct contact with drugs used by pharmaceutical manufacturers and pharmaceutical preparations prepared by medical institutions. The inner packaging should ensure the quality of the drug in the process of production, transportation, storage and use, and be convenient for clinical use.
To sum up, aluminum hose has its unique advantages and strong vitality. It is the mainstream of packaging selection for medicinal ointment in the future, and also meets the requirements of IS014000: improve the environment and protect the environment, and promote the sustainable development of economy.