Plastic microlens arrays as a popular optical component has been used in wide range of devices because its low cost, high quality, and easy fabrication using simple methods. Although techniques for have advanced considerably recent years, non molding-based methods however are usually not suitable mass production. On the other hand, production rate, but these less capable creating complex compon...

As the surface acoustic wave (SAW) filters incline to ultrafine, failures resulting from wafer molding process have become increasingly prominent. A methodology for coupling mechanisms of die fly and shift SAW filter miniatured with 737 μm × 517 200 is developed trade-off between reliability yields. In terms shift, former occurs before epoxy compound (EMC) cured in temperature rise period, whil...

INTRODUCTION: Vitamin E-stabilized, radiation cross-linked ultra-high molecular weight polyethylene (UHMWPE) is used in total joint arthroplasty as a bearing surface with low wear and improved mechanical properties compared to irradiated and melted UHMWPE [1]. Vitamin E stabilizes the residual free radicals trapped in the material after irradiation and ensures oxidative resistance, thus resulti...

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...

We have assembled and studied melt-processed all-polymer lasers comprising distributed Bragg reflectors that were fabricated in large sheets using a co-extrusion process and define the cavities for dye-doped compression-molded polymer gain core sheets. Distributed Bragg reflector (DBR) resonators consisting of 128 alternating poly(styrene) (PS) and poly(methyl methacrylate) (PMMA) layers were p...

It is not possible for the wax pattern of most large-volume maxillary resection obturators to be placed into a flask for conventional compression molding processing and positioning of the wax pattern. However, these wax patterns and their channel access design often can be modified and aligned in position for processing with the continuous pressure injection technique. This article describes th...

Curing is a critical process in the compression molding of carbon fiber reinforced polymer (CFRP). It directly bears on quality molded products. Based curing theory resin-based polymers, thermo-mechanical-chemical multi-field coupling model for CFRP form thermal-chemical subprocess, matrix flow-compaction sub-process and residual stress-deformation sets up its data exchange mutual call relation...

nowadays, nanoscale innovations in the forms of pathogen detection, active packaging, antimicrobial packaging and barrier formation are poised to elevate food packaging to new heights. antimicrobial nanocomposite ldpe films containing zno nanoparticles at different concentrations (e.g. 1%, 3%, 5%  and 3%  nano-zno pulse 10% polyethylene grafted maleic anhydride (pe-g-ma), w/w pure ldpe), were p...

Polyetheretherketone (PEEK) was reinforced with 0-40 vol% hydroxyapatite (HA) whiskers using a novel powder processing and compression molding technique. A powder mixture was uniaxially pressed into a composite powder compact and compression molded into a flat composite bar using an open-channel die, such that the HA whiskers exhibited a preferred orientation along the length of the bar and ten...