An innovative manufacturing process for bamboo injection molding by using TRIZ and Taguchi method

Abstract

The appearance of 3C (computer, communication, consumer electronic) electronic products has been considered as a critical attribute to attract consumers in the past decade. Moreover, 3C electronic enterprises with own brands are trying hard to meet the requirements such as user-friendly interface and eco-environmental materials for increasing the revenue and market share. Bamboo had been known as a flexible and green raw-material worldwide for many years. However, there are no bamboomade applications in any 3C electronic products due to its manufacturing process to achieve satisfactory specifications. The innovative manufacturing process of bamboo injection molding on the appearance of a 3C product suffered from a crucial quality issue, that is, bamboo deformation due to the difference between shrinkage of plastic and its inherent material characteristics. The concept is similar to IMR (in-mold decoration by roller) process. The objective of this article is to propose an innovative and robust bamboo injection molding process by using skills such as measurement system analysis, the Taguchi method, process capability index, and TRIZ. In this study, the detailed experimental process and satisfactory result are demonstrated and given. The exploited approach concerning bamboo is a valuable outcome and reference for further advanced implementations in electrical industry and others.

Optimization of Laser-MAG Hybrid Welding Parameters of Ship Steel Based on Response Surface Methodology

“…Lee et al used the Taguchi method and regression analysis in order to optimize Nd-YAG laser welding parameters (nozzle type, rotating speed, title angle, focal position, pumping voltage, pulse frequency and pulse width) to seal an iodine-125 radioisotope seed into a titanium capsule [18]. The Taguchi method has been successfully applied to a number of industrial processes; including the automotive industry [19,20], robotics processing [21,22], plastics industries [23], and computer-aided design/electrical engineering tasks [24,25]. J Ning proposed an iterative gradient search method, based on the Kalman filter algorithm, to inverse Johnson-Cook model constant (J-C constant).…”

Interpretation for the Pressure and Temperature Signals of Injection Molding Process

“…As the most important shaping method for plastics, the injection molding attracted many researchers' attention in the field of materials processing (Michaeli et al, 2012;Moritzer et al, 2012;Mulyana et al, 2012). During the study on the optimization of processing parameters (Rudolph et al, 2011;Lu et al, 2012), the process simulation (Thornagel & Florez, 2012), experimental validation (Simacek et al, 2012), quality control of molded products (Woll & Cooper, 1997), and development of new injection process (Chang & Yeh, 2012;Lee et al, 2012;Peng et al, 2012), the temperature and pressure signals were essential data for the flow analysis of injection molding.…”