Plastic Jar, Cosmetic Packing ,Plastic Bottle Manufacturers China - Customized - Brother Mould

URL: https://www.btechpackaging.com/news/how-are-plastic-bottles-made-67734832.html The Makings of Plastic Bottles. PET is a form of polyester. It is a polymer primarily derived from petroleum hydrocarbons and is the result of a reaction between monomers ethylene glycol and terephthalic acid. In the making of PET plastics, terephthalic acid is combined with Methanol to produce Dimethyl Terephthalate and water. This product is then combined with Ethylene Glycol at a temperature of 305 degrees Fahrenheit to create another substance, known as Bis(2-hydroxethyl) terephthalate and methanol. In the final step, a polymer is formed while another molecule is released. This condensation polymerization process of the Bis(2-hydroxethyl) Terephthalate occurs in a vacuum at 530 degrees Fahrenheit, producing chains of PET and ethylene glycol, which is constantly removed during the polymerization process and used to make additional PET. When the PET mixture reaches the right thickness, it is ...

URL: https://www.brotherpkg.com/news/factors-to-consider-when-buying-polypropylene-67246063.html When buying polypropylene caps, there are several factors that you need to consider. This ensures that you get the right product that meets your needs. Here are some of the most important factors to consider: Material Quality The quality of the material used can vary depending on the manufacturing process and the additives used. It is important to choose a supplier that uses high-quality polypropylene to guarantee that you get caps that are strong, durable, and resistant to high temperatures. Additives Used Polypropylene caps can be made with various additives to improve their performance. For example, some caps may have UV stabilizers added to protect them from the harmful effects of UV radiation. Others may have antistatic additives to prevent static buildup. The additives used can affect the properties of the caps, such as their strength, flexibility, and chemical resistance. It is impor...