This paper presents the experimental results regarding acoustic emission signals measured during the injection molding of those standard test specimens commonly used for examining the shrinkage behaviour of various thermoplastic materials. In daily industrial production of different plastic products we often have to deal with various errors that practically occur on the mold primarily as a resu...

In this paper, the Accumulative Channel-die Compression Bounding (ACCB) method is investigated as a new method of severe plastic deformation to produce Nano-crystalline bulk metals on the basis of pressing in a channel mold. Aluminum as One of the most usable metal in industry is processed using this method. Analyzing the processed samples show that after four passes of ACCB method, the ultimat...

In this paper, some molding process parameters such as injection time, packing time, packing pressure and process temperature etc. were optimized by the Computer Aided Engineering (CAE) simulation (Moldex 3D) for injection molding of a plastic lens. Some experimental trials were carried out for verifying of the CAE simulation results with checking of the lens shrinkage and birefringence etc. as...

The current handling of waste, especially styrofoam, plastic, used oil is not optimal, these wastes can be to manufacture other products such as bricks with a simple process. If the waste processed properly, it will get good economic value. To value or product, necessary do research testing, in this study, namely use styrofoam plastic and bricks. In hoped that public understand quality types co...

We demonstrate the generation of patterns on overhead projector paper (OHP) and glass slides with the dimension at the submicron scale and in various colors. We have used the commercially available permanent marker pen to write lines on the surface of OHPs and glass slides and transferred the patterns of a compact disk (CD) onto the line. Observation under an optical microscope exhibited variou...

Injection molding has been the most popular method for making plastic products due to high efficiency and manufacturability. The injection molding process includes three significant stages: filling and packing stage, cooling stage, and ejection stage. Among these stages, cooling stage is very important one because it mainly affects the productivity and molding quality. Normally, 70%~80% of the ...