maszyny: Design of plastic components

Evidence: 100 • authority: 72

Injection molding has been one of the most popular ways for fabricating plastic parts for a very long time. They are used in automotive interior parts, electronic housings, housewares, medical equipment, compact discs, and even doghouses. Below are certain rule based standard guidelines which can be referred to while designing parts for injection molding considering manufacturability in mind.

Evidence: — • authority: 92

Molded Part Warpage Optimization Using Inverse Contouring Method.. Warpage is among the most prevalent defects affecting injection molded parts. In this study, we aimed to develop methods to minimize warpage through mold design. Common strategies include matching the cavity geometry to the intended shape of the part, adjusting cavity dimensions to offset material shrinkage, and optimizing the cooling system and critical injection molding parameters. These optimization methods can offer significant improvements, but recently introduced methods that optimize the molded part and mold cavity shape result in higher levels of warpage reduction. In these methods, optimization of the shape of the m…

Evidence: — • authority: 92

Hot-Melt Processed Glibenclamide Glassy Solutions: A Novel Oral Delivery Platform for Enhanced Bioavailability in Diabetes.. Background/Objectives : Hot-melt injection molding (HMIM) was evaluated as a solvent-free process for the preparation of glibenclamide (GLB), a poorly soluble BCS Class II drug, glassy solutions with the objective of improving dissolution and bioavailability for diabetes. Methods : GLB was blended at a concentration of 10% w / w with PVP K25, PVP VA64, and Soluplus ® (SOL) matrices. The miscibility of the GLB-polymer systems (matrices) was calculated based on the Hansen solubility parameters and validated using differential scanning calorimetry (DSC) analysis. The HMI…

Evidence: — • authority: 92

Design, Manufacturing, Tribology, and Performance of Microgears and Microgear Trains: A Critical Review of Mechanical Power Transmission at the Microscale.. Microgears enable mechanical power transmission, speed reduction, motion conversion, and synchronization in compact devices ranging from microelectromechanical systems to miniature robots and optically driven micromachines. Their behavior cannot, however, be inferred by geometrically scaling conventional gears alone. As size decreases, relative manufacturing errors, surface forces, friction, adhesion, environmental sensitivity, and metrological uncertainty become increasingly important, while torque capacity and stored kinetic energy de…

Evidence: — • authority: 92

Biomimetic Material Selection for Therapeutic Microneedles: An Analytic Hierarchy Process-Based Multi-Criteria Evaluation.. Microneedles are a new technology in transdermal drug delivery that allows for the pain-free administration of drugs. Recently, these microneedles have gained popularity compared to traditional injections. Nevertheless, the selection of the most suitable materials is a significant issue, requiring a systematic analysis of various performance parameters. This paper developed a multi-criteria decision-making model based on the analytic hierarchy process (AHP) to systematically evaluate four primary material types for therapeutic microneedle applications: polymers, metals…

Evidence: — • authority: 92

Comparative Study on Injection Molding and Performance of Glass Fiber-Reinforced PET and PA6 Thermoplastic Insulators.. In ultra-high-voltage GIS and GIL systems, epoxy resin insulators are still the mainstream choice. However, as a thermosetting material, epoxy resin is difficult to recycle after disposal, which limits its environmental benefits. Thermoplastic insulators, due to their recyclability, are potential alternatives. This study focuses on 30% glass fiber-reinforced PET and PA6 materials. Their injection molding behavior, hydraulic pressure performance, and insulation performance were systematically analyzed using Moldflow, ANSYS, and COMSOL, respectively. For injection molding, M…

Evidence: — • authority: 72

Design for manufacturability in electric discharge machining is a method of designing metal parts for efficient machining using electrical discharge machining processes. Electrical discharge machining (or EDM) is one of the most accurate manufacturing processes available for creating complex or simple shapes and geometries within parts and assemblies. A machining method typically used for hard metals, EDM makes it possible to work with metals for which traditional machining techniques are ineffective. Design for manufacturability (also sometimes known as design for manufacturing or DFM) is the general engineering art of designing products in such a way that they are easy to manufacture. The…

Evidence: — • authority: 72

Injection moulding (U.S. spelling: Injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mould cavity, where it cools and hardens to the configuration of the cavity. After a product is designed, usually by an industrial designer or an engineer, moulds are made by a mould-maker (or toolmaker) from metal, us…

Evidence: — • authority: 72

Material extrusion-based additive manufacturing (EAM) represents one of the seven categories of 3D printing processes, defined by the ISO international standard 17296-2. While it is mostly used for plastics, under the name of FDM or FFF, it can also be used for metals and ceramics. In this additive manufacturing process category, the feedstock materials are mixtures of a polymeric binder (from 40% to 60% by volume) and a fine grain solid powder of metal or ceramic materials. Similar type of feedstock is also used in the metal injection molding (MIM) and in the ceramic injection molding (CIM) processes. The extruder pushes the material towards a heated nozzle thanks to the controlled axial m…