J. Dobránsky, P. Baron, M. Kočiško, Faculty of Manufacturing Technologies with a seat in Prešov, Technical University of Košice, Slovak Republic L. Běhálek, Faculty of Manufacturing Technologies, Technical University of Liberec, Czech Republic E. Vojnová, 1.PN Moulds and Tools, Prešov, Slovak Republic This article deals with improvement of design properties of molded plastic parts. It can be ac...

We propose a new lithography technique that combines the advantages of nanoimprint lithography (NIL) and photolithography. In this combined-nanoimprint-and-photolithography (CNP) technique, we introduce a hybrid maskmold made from UV transparent material and with a light-blocking metal layer placed on top of the mold protrusions. We demonstrate that the CNP method using such a hybrid mold can a...

Warpage and shrinkage control are important factors in proving the quality of thin-wall parts in injection modeling process. In the present paper, grey relational analysis was used in order to optimize these two parameters in manufacturing plastic bush of articulated garden tractor. The material used in the plastic bush is Derlin 500. The input parameters in the process were selected according ...

The purpose of this study was to evaluate the surface hardness of a resin composite (TPH) polymerized with and without the use of a transparent light-curing cone. Twenty composite blocks were made on a Teflon mold with cylindrical holes of 3 mm depth and 6 mm radius, and were light cured following different procedures. Group 1: Ten samples were pressed with a glass slide and light cured for two...

Title of Dissertation: CREEP CORROSION OVER PLASTIC ENCAPSULATED MICROCIRCUIT PACKAGES WITH NOBLE METAL PREPLATED LEADFRAMES Ping Zhao, Doctor of Philosophy, 2005 Dissertation Directed By: Dr. Michael Pecht, Professor, Department of Mechanical Engineering Field failures were observed to be caused by the bridging of corrosion products across lead fingers. This phenomenon was identified as creep ...

Injection Molding is a crucial segment of the plastics industry mainly due to its ability and flexibility to manufacture intricate components at high production rates and also with easy process flow. Injection molding has laid its hands over right from small parts to big machine parts. Plastic side release buckles, commonly employed in standard bags, suitcases and pouches, and are manufactured ...

Abstract In this paper, injection molding is used as a method of plastic molding, which in the molten state injected into closed mold cavity by compression, and material fills then cured cooling to maintain shape mold. The basic structural form parameters mold’s parting surface, winding system, system are determined flow analysis. CAE analysis move filling computer, casting system’s design sche...

In-mold assembly process has been used for manufacturing articulated structures at the macro scale. But the in-mold assembly process at the mesoscale behaves differently and poses new challenges due to reduced structural rigidity of the mesoscale premolded component. One of the major challenges that need to be addressed is that of the plastic deformation of the premolded component during the se...

Glass insulated carbon-fiber microelectrodes (CFMEs) are standard tools for the measurement of neurotransmitters. However, electrodes are fabricated individually and the glass can shatter, limiting application in higher order mammals. Here, we developed a novel microelectrode batch fabrication method using a 3D-printed mold and polyimide resin insulating agent. The 3D-printed mold is low cost, ...

0261-3069/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.matdes.2010.08.008 ⇑ Corresponding author. Address: School of Mechan ing, Nanyang Technological University, 50 Nanyang Republic of Singapore. Tel.: +65 6790 5588; fax: +65 E-mail address: [email protected] (Z.W. Zhon In this study, a rapidly solidified aluminum alloy was compared with beryllium copper and 6061 aluminum alloys in ...