Preliminary analysis of processing temperature of blow molding machine

During the plastic molding process of blow molding machines, the temperature rises slowly. When the processing temperature is in a lower temperature environment, the polymer is in a rigid solid state and only undergoes small deformation under external forces, similar to glass. Therefore, this state is called the glassy state. If the ambient temperature is raised to a certain temperature, its shape will undergo significant changes under external forces. Within a certain temperature range, the shape change will be relatively stable, and this state is called the high elastic state. If the temperature continues to rise, the deformation gradually increases with the increase of temperature until it becomes a viscous fluid, at which point its shape cannot be restored, and this state is called a viscous flow state. The transition from the glassy state to the highly elastic state is generally referred to as the glass transition, and the temperature range of the morphological transition process is called the glass transition temperature. The temperature range of this transition process from the highly elastic state to the viscous flow state is called the viscous flow temperature. The processing and molding of plastic products are all completed in a viscous flow state.