Molecular sieve is a commonly used desiccant for packaging

Desiccant is a commonly used item in pharmaceutical packaging, which is mainly used to absorb moisture inside the packaging and prevent the drug from decomposing due to moisture. Effervescent tablet packaging is a barrel-shaped packaging, and molecular sieve agent is a commonly used desiccant.

test strip packaging     

desiccant bottle

92mm*21mm plastic tube with desiccan stopper   

 84mm*29mm effervescent tablet tube

Molecular sieve is a synthetic desiccant product with strong adsorption to water molecules. The structure of the molecular sieve desiccant is like a sponge, with densely packed pores arranged in it, and the pores are interconnected and criss-crossed. According to calculations, the inner surface area of the holes in the molecular sieve per gram can reach more than 800 square meters. When different substances pass through the molecular sieve, only some small molecules can flow unimpeded, and other molecules either linger outside or are adsorbed in the pores. , Can not break free, so as to achieve the purpose of screening molecules. This is also the origin of the name "molecular sieve".

The pore size of the molecular sieve can be controlled by the different processing technology. 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 molecular sieve in the packaging of effervescent tablets is generally placed on the bottle cap, which can save space and prevent direct contact between the drug and the desiccant.

Molecular sieve is a commonly used desiccant for packaging effervescent tablets. Some pharmaceutical companies will also choose a mixture of molecular sieve and silica gel to take advantage of the advantages of both to achieve better adsorption effects.

desiccant cap