The medical plastic bottle is a packaging container formed by blow molding. It has the advantages of being unbreakable, good sealing performance, moisture-proof and hygienic. The commonly used raw materials include polyethylene, polypropylene and polyester. Different raw materials have different characteristics.
Polyethylene: non-toxic, odorless, feel like wax, has excellent low temperature performance (minimum operating temperature can reach -70-100 ℃), resistance to most acid and alkali erosion (not resistant to acids with oxidizing properties), flexibility Well, it doesn't break easily when dropped. Low water absorption and excellent electrical insulation. This kind of raw material is the most used type of medical plastic bottles.
Polypropylene: Polypropylene is harder than PE, but has poor flexibility and high temperature resistance. The operating temperature range is -30 ~ 140 ° C, and it is fragile at low temperature. It is resistant to acid, alkali, salt solution and a variety of organic materials below 80 ° C. Corrosion of solvents, can be decomposed under high temperature and oxidation.
PP tube for effervescent tablet
Polyester: high transparency, impact resistance, oil resistance, dilute acid resistance, resistance to most solvents, but afraid of high temperature, if it is packaged in a bag and exposed to the sun, it will deform, so pay attention to the transportation of polyester bottles, use carton and be careful not to show. Some candy tablets, calcium tablets, and oral liquids will choose transparent polyester bottles.
On the whole, polyethylene, polypropylene and polyester are the three most widely used raw materials for medical plastic bottles. The three have their own characteristics. When choosing pharmaceutical packaging materials, it should be determined according to the characteristics of the dosage form of the drug and storage requirements.
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