Plastics & Rubber
Plastics & Rubber info:
Plastics are a wide variety of synthetic polymers that are delivered usually in form of pellets and can be melted in the heat. The viscous melt can then be formed into a multitude of shapes: Extruded into fibers, films, sheets, tubes or complex profiles or molded into almost any shape imaginable. Depending on the chemistry involved, Thermoplastics are available in a wide range of hardness and heat/light/chemical resistance, so it is no surprise that we find them everywhere in products around us. Plastic parts can be recycled by re-melting. Important materials are polyethylene (PE), polypropylene (PP), polyester (e.g. PET) and polyamide (PA66; "Nylon").
Rubber can be made out of natural polymers, e.g. latex of the hevea-plant, or a variety of synthetic polymers. However, in order to get a product which shows the typical elasticity, i.e. stretching under stress and immediately recovering without it, the polymer has to undergo a thermal treatment known as vulcanization or cross-linking. The cross-linking is usually done by chemical agents, which have to be mixed into the rubber (amongst other ingredients) prior to the shaping and subsequent vulcanization. A wide variety of rubber polymers are available with different characteristics in terms of mechanical/thermal/chemical stability. Rubber can be found in tires, hose and seals. Because cross-linking is almost irreversible, rubber goods are rather difficult to recycle. Thermoplastic Elastomers do not need vulcanization and are as easy as other plastics to be manufactured into parts; they lack, however, the thermal stability and mechanical resistance of cross-linked rubber.
Wood Plastic Composite
Wood plastic composite, a hybrid of wood and plastic, is a material commonly used to replace wood in various applications. The composition of wood plastic composite, as well as material characteristics, are explained here.
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This article provides an overview of polylactic acid (PLA), a plastic derived from renewable resources as opposed to petrochemical sources.
HMI Backlighting Options for Maximum Performance
Backlighting assists the end user in operation of the OEM applications. This paper focuses on custom user interface keypads, or simply HMI's (Human-Machine Interface) products. Highlighting the three categories: general backlighting, selective, controlled backlighting, and a combination of both, it goes on to explain how backlighting is...
Rubber Keypad Comparison - Conductive & Non-Conductive Construction Differences
Molded silicone rubber keypads offer a 3-dimensional operating surface that appeal to end users. Detailing the range of design features available, this paper focuses on two styles: conductive rubber keypad and non-conductive rubber keypad. Explaining the manufacturing processes of molded silicon rubber pads, it shows: how keytop legends can be...
Machining Plastics:The Essential Guide to Materials, Tools and Techniques
Demystifying the art of machining plastics, this paper looks at various factors that one needs to consider ranging from selection of the material to utilization of different tools and processes such as drilling, turning, milling, cutting, threading, tapping, removal of burrs, coolant, and methods of sawing to obtain the end product. Highlighting...
The Purpose of Project Management for Injection Mold Building
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Overviewing the role of Project Management Office (PMO) in any injection mold building project, this paper states that the goal of an effective PMO is to achieve all benefits from the standardized project management processes, methods and policies. It briefs that PMO follows every project related task from start to finish, and includes its...