The raw materials of plastic medicine bottles need to meet the requirements of medical and health. The commonly used plastic materials are polyethylene (PE), polypropylene (PP), polyester (PET) and so on. These materials have this different feature. Polyethylene (PE) is corrosion resistant and can be chlorinated.
Polyethylene is classified into high density (HDPE), low density (LDPE), and linear low density (LLDPE). HDPE has a higher melting point, hardness and strength, low water absorption, good processability, and radiation resistance, and is often used in the production of plastic bottles for tablets; LDPE has better flexibility, elongation and impact strength.
A plastic medicine bottle that can be used for eye drops; LLDPE has high impact strength, fatigue resistance, and abrasion resistance, and is less used in medical packaging. High-density polyethylene bottle polypropylene (PP) has low density, superior strength, hardness, and heat resistance than high-density polyethylene, but it becomes brittle at low temperature, not wear-resistant and easy to age.
However, the corresponding additive can be added for modification, and the functional level of HDPE can be achieved after modification. Polypropylene bottle manufacturer PET has many advantages as a pharmaceutical packaging container. First of all, PET bottles are light and strong, and their strength and elasticity are significantly higher than those of plastic bottles made of plastic materials. It is better to isolate water vapor and oxygen in common plastics.
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