On the basis of sealing, medicinal bottle caps gradually have more diversified functions, such as moisture resistance. This special cover is mainly used for medicines that require high moisture resistance, such as effervescent tablets and candy pressed tablets. What is its design principle?
Generally, medicines that need moisture-proof preservation will place a desiccant inside the package. A common way is to place a bag of desiccant inside a medicinal plastic bottle. The moisture-proof medicinal bottle cap utilizes the space at the top of the bottle cap, and a small medicine compartment is designed on the top of the cap to store silica gel and molecular sieve desiccant. Such a design saves space on the one hand, and at the same time avoids the risk of children accidentally swallowing the desiccant.
The desiccant selected for this lid is mainly silica gel, molecular sieve or a mixture of the two in equal proportions. The main component of silica gel desiccant is a highly active adsorbent material, which can adsorb water vapor up to 40% of its own weight. It can be used in direct contact with medicines and food. The pore size of molecular sieves can be controlled by different processing techniques. In addition to adsorbing water vapor, it can also adsorb other gases. In the case of high temperature above 230 ℃, it can still hold water molecules well.
The above is the design principle of moisture-proof medicinal bottle caps. From the perspective of pharmaceutical companies, the design of moisture-proof medicinal bottle caps can also increase the added value of drugs and make it easier to stand out from similar products in the market.
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