Preform: a key part in the production of plastic bottles and jars
Preform is one of the basic parts produced by the plastic injection process, which is used as the main base in the production of all kinds of plastic bottles and plastic jars. This piece, usually made of polyethylene terephthalate (PET), is converted into its final shape by PET blow molding machines and plastic bottle making machines plastic bottle making machines . In this article, we will examine the preform production process, its features and applications in the packaging industry. Preform production by plastic injection process Preforms are produced by plastic injection process. This process includes the following steps: Injection of raw materials: polyethylene terephthalate (PET) is introduced into the plastic injection machine in the form of granules. Melting and injection: PET materials are melted at high temperature and injected into the preform mold. Cooling and ejection: After the mold is filled, the molten material is cooled and the formed preforms are removed from the mo...