The development of science and technology and the progress of various processing techniques have made polyethylene, polypropylene, polyester and other polymer materials more widely used, of which plastic packaging bottles are a more extensive aspect.
Plastic packaging bottles play an important role in our production and life. They are non-toxic, odorless, light in weight and not brittle. They can resist the corrosion of most acid and alkali solvents. Some special materials can also withstand higher temperatures. It will not produce certain deformation and damage at high temperature, and will not produce certain harmful gases, and can be used as packaging for various items such as pharmaceutical packaging, daily necessities, and food. In veterinary drug packaging, it can be used not only as the packaging of solid powders, but also as the packaging of liquid drugs such as animal vaccines and injections.
At present, the commonly used plastic packaging bottle materials on the market are polyethylene, polypropylene, polyester, etc., and different materials are suitable for different product packaging. Drugs are mainly made of high-density polyethylene or polypropylene, and polyester materials are used for items that require transparent packaging, such as beverages, oral liquid bottles, etc. Most beverage bottles are made of polyethylene and polypropylene. For some items that need to be protected from light, brown bottles are generally selected to avoid the decomposition of the contents by light.
On the whole, the various advantages of plastic packaging bottles also make their application scope continue to expand. Various processing techniques such as injection molding, injection blowing, extrusion blowing, injection stretch blowing, etc. allow this packaging to have more presentation forms.
