How to ensure the sealing of medicinal bottle caps

Tightness is one of the main functions of medicinal bottle caps, and it is also a very important testing item in the quality standard of pharmaceutical packaging. If the airtightness is not up to standard, the medicine in the package is easily polluted by the external environment or deteriorated by moisture, which will endanger the health of the patient. So, how does the lid ensure its tightness?

The sealing measures of medicinal bottle caps are mainly reflected in the sealing gaskets and sealing equipment. Generally, aluminum caps or plastic caps are mostly used for medicinal plastic bottles, and the matching gaskets include silicone gaskets and butyl gaskets. and foil spacers.

Silicone gasket has good chemical stability, pressure resistance, high temperature resistance, low temperature resistance, safety, environmental protection, no peculiar smell, insoluble in water and any solvent, is a highly active green product, whether it is used for medicine or food grade. is very safe and reliable. (2) Butyl gasket: It is a type of gasket that is widely used on the market, and butyl reclaimed rubber can replace butyl raw rubber to produce various medical sealing gaskets, reducing the cost of raw materials. (3) The PE gasket has a single composition, non-toxic, tasteless, odorless, and no independent bubbles. Good chemical stability, acid and alkali solvent resistance, the use of this gasket can increase the sealing performance of the bottle cap.

To enhance the sealing of medicinal bottle caps, the above three gaskets are generally selected. In addition, to achieve good sealing, it is also necessary to control the size of the bottle cap and the bottle mouth, and the interference of the two can ensure good drug storage.