Introduction: Cleft lip and palate is a congenital anomaly occurring in 3 in 1000 live birth. One the major concern in this patient is about cleft gap and its surgical problems. Several surgical and non-surgical procedures have been done to decrease this gap. They aimed to achieve the more esthetic results as well as feeding success. Nasoalveolar Molding (NAM) is a new method for reshaping nasa...

Poly(lactic acid) (PLA) stands out as the most promising biodegradable alternative to conventional petrochemical-based polymers for manufacturing of high-performance materials applied in medicine, pharmacy, food, textile, and electronic industry. This review was aimed present up-to-date technologies PLA processing including melt blending molding, hot extrusion, 3D printing, foaming, impregnatio...

This study was conducted in the Khartoum refinery Algylee to properties of polypropylene (grade 113 &114) which are produced by addition technique; they used refined propylene from Liquefied Petroleum Gas and Ziegler-Natta catalyst. The samples were taken (1-15)/08/2010 three features (powder, granulates, specimens). Both grades homopolymer isotactic polypropylene. They checked component li...

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 ...

background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

Gas-assisted injection molding process is much complicated,the process parameters have multiplied. In this paper, a product with typical character of gas-assisted injection molded part is employed as the object of study. With the mould of gas-assisted injection molding and MPI/3D GAS in Moldflow software,the influence rule of the 6 important process parameters on gas penetration length in gas-a...

Products from the materials of Ti-Al system are difficult to manufacture. This often restricts use such despite their outstanding properties. Some promising methods for manufacturing products, which allows working with system, powder injection molding (PIM) and material extrusion additive (MEAM) technologies. In present study, composites Ti-48Al-4W different size distribution, obtained by elect...

Powder extrusion molding is proposed to fabricate ceramic LiFePO4 layers (0.5–1.0 mm thickness) as solid booster for ferricyanide electrolyte in semisolid redox flow battery. In some extruded layers, the binder partially decomposed, while others it completely removed and, afterwards, material sintered, so materials with different porosity and dimensions are obtained. After characterizing materi...

This study aims to obtain a desirable 3D printing product based on the knowledge of material and suitable parameters. used high-methoxy pectin (HMP) as ingredient jelly candy understand effect different concentrations parameters (nozzle height, extrusion rate, layer nozzle movement speed, diameter). Machine learning was learn analyze data find out parameter. Rheological analysis revealed that 1...

This review deals with recent works on the process and technological aspects of wood-plastic composites (WPCs) manufacturing.WPCs relate to any that are built from wood non-wood fibers thermoplastic polymers. Recent progress relevant has been reviewed in this article. The WPC, such as raw materials, fabrication, mechanical, physical, thermal, morphological properties, were outlined comprehensiv...