Mar. 07, 2022
Plastic packaging bottles are packaging containers that carry liquid or solid substances and have penetrated into all aspects of people's lives. Such as milk, beverages, medicines, daily necessities, etc. Among the raw materials for plastic packaging bottles, polyethylene (PE) is the most widely used one.
Polyethylene is a thermoplastic resin obtained by polymerization of ethylene. It is odorless, non-toxic, and feels like wax. It has excellent low temperature resistance (minimum operating temperature can reach 100~-70°C), good chemical stability, and can withstand Attack by most acids and bases (not resistant to acids with oxidizing properties). It is insoluble in common solvents at room temperature, with low water absorption and excellent electrical insulation.
Polyethylene is divided into high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) according to the polymerization method, molecular weight and chain structure. The raw materials used for plastic packaging bottles are mostly high-density polyethylene and low-density polyethylene. Among them, low-density polyethylene is mainly used for the packaging of diluted drop bottles. It is soft to the touch and easy to squeeze, but it is not resistant to high temperature and will melt when it is above 80 degrees, while high-density polyethylene is resistant to low temperature (-70-100 °C), Good flexibility. The commonly used processing techniques for polyethylene raw materials include injection molding, extrusion, and blow molding. According to different bottle types and uses, the processing methods are also slightly different.
Plastic packaging vaccine bottles have become an indispensable item in our lives, and are also the most widely used packaging types in the veterinary drug packaging industry, such as vaccine bottles, disinfectant bottles, etc. With the continuous development of various industries, plastic packaging products will have a wider range of market space.