The tube cap of the effervescent tablet is composed of a low-density polyethylene (LDPE) bottle cap skeleton, desiccant, and a cardboard.Desiccant is used to prevent moisture and mildew in medicine and food. Commonly used desiccants can be divided into physical adsorption desiccants and chemical adsorption desiccants. The silica gel desiccants in physical adsorption desiccants meet the US FDA standards and have been verified to be harmless to the human body. Silica gel desiccant physically adsorbs water molecules into its structure.
Effervescent tablet packaging tube use chemisorbent desiccants. Commonly used desiccants for chemical adsorption are quicklime, magnesium chloride, calcium chloride, soda lime, phosphorus pentoxide, etc., which absorb water molecules to change their chemical structure and become another substance. Molecular sieves are another commonly used desiccant. Molecular sieves are crystalline silicates or aluminosilicates, which are pores and cavities that are connected to each other by oxygen bridge bonds through silicon-oxygen tetrahedra or aluminum-oxytetrahedra. It can be used as efficient desiccant, selective adsorbent, catalyst, ion exchanger, etc. According to the size of the pore channel, molecular sieves with pore size less than 2nm, 2-50nm and more than 50nm are called micropore, mesopore and macropore molecular sieve, respectively.
The cap of the effervescent tablet packaging tube has a spiral plastic spring and the cardboard is used to isolate the desiccant from the medicine to prevent direct contact with the article. The spring can compress the tablet to prevent shaking. Desiccant is on the top of the lid to prevent accidental ingestion. The cap and the bottle are directly matched and sealed, and no gasket is required. The bottle body is mainly injection molding and injection blowing, and the capacity is generally less than 100ml. Can be printed according to customer requirements. Mainly used for testing paper, effervescent tablets easily absorb moisture.
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