Energy-saving Manufacturing Technology for Heating of Injection Stretching Blow Molding Machine

Abstract

The manufacture of polyethylene terephthalate (PET) containers is now very common, but there has been little research on energy saving in this manufacturing technique. This paper provides a feasible, simple, and low-cost energy-saving manufacturing technology for injection stretching blow molding (ISBM). This study is divided into two parts: an experimental part and a computational part by computational fluid dynamics (CFD). The principle and execution methods of the experiment and computation are delineated in the text. Sensor detection is used to confirm the result of CFD. The finished product produced by the proposed technique has a higher quality than a product made in a factory and the energy saving was approximately 14%. In the future, we will continue to study the integration of various technical details so that machine operators can better understand the methods of energy-saving operation and thereby contribute to environmental protection simultaneously.

Numerical Simulation of Recycled PET Preforms Infrared Heating Including Force Convection Effect in the Industrial ISBM Ovens

“…Then, the air flow fields obtained from the 2D simulation was used to calculate a convective heat transfer coefficient correlation along a vertical wall used for 3D simulation of IR heating for PET preform. A recent application of Computational Fluid Dynamics (CFD) to calculate the air flow field in an IR oven can be found in [9]. The CFD model allowed the authors to improve knowledge of the air flow inside the oven, which was then used for the purpose of controlling the flow angle and air volume of the fan system.…”