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Term |
Definition |
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Fabricate
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To work a material into a finished form by machining, forming, or other operation or to make flexible film or sheeting into end products by sewing, cutting, sealing, or other operation.
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Fabricating
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The manufacture of plastic products by appropriate operations. This includes plastics formed into molded parts, rods, tubes, sheeting, extrusion and other forms by methods including punching, cutting, drilling, tapping, fastening or by using other mechanical devices.
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Fadeometer
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An apparatus for determining the resistance of resins and other materials to fading. This apparatus accelerates the fading by subjecting the article to high intensity ultraviolet rays of approximately the same wave length as those found in sunlight.
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False Neck
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A neck construction which is additional to the neck finish of a container and which is only intended to facilitate the blow moulding operation. Afterwards the false neck part is removed from the container.
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Family Mould (Injection)
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A multi-cavity mould wherein each of the cavities forms one of the component parts of the assembled finished object.
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Fatty Acid
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An organic acid obtained by the hydrolysis (saponification) of natural fats and oils, eg, stearic and palmitic acids. These acids are monobasic, may or may not have some double bonds contain 16 or more C atoms.
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Fault
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An electrical short circuit or leakage path to ground or from phase to phase inadvertently created.
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FDA
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Food & Drug Administration
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Feed Housing
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A separate components of an extruder barrel assembly which contains the feed openings, water cooling channels and, in some cases, a grooved interior lining. It is capable of withstanding high pressures (15,000 PSI or more), especially if it is grooved, and may incorporate a thermal barrier between it and the barrel to which it is attached. Also referred to as feed throat.
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Feed Opening
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A hole through the feed section of the barrel for the introduction of feed material into the barrel. Also referenced to as feed hole or feed port.
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Feed Port
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See 'Feed Opening'
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Feed Section (Screw)
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The portion of the screw which receives the material to be processed and conveys it to the transition section of the screw. The feed section normally has a constant channel depth and constant root diameter.
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Feed System
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The main connecting link between the machine nozzle and the part cavities of the mould.
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Female
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In moulding practice, the indented half of a mould designed to receive the male half.
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FEP
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Fluorinated ethylene-propylene
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FF
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Furan formaldehyde
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Fiber
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This term usually refers to relatively short lengths of very small cross-sections of various materials. Fibers can be made by chopping filaments (converting). Staple fibers may be 1/2 to a few inches in length and usually 1 to 5 denier.
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Fiber Show
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Strands or bundles of fibers that are not covered by resin and that are at or above the surface of a reinforced plastic.
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Filament
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(1) A continuous thread of a specified diameter, e.g. silk (natural fibre) or rayon (synthetic fibre); the opposite of a fibre with a finite length, such as wool or cotton (2) A variety of fiber characterized by extreme length, which permits its use in yarn with little or no twist and usually without the spinning operation required for fibers
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Filament Winding
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Roving or single strands of glass, metal, or other reinforcement are wound in a predetermined pattern onto a suitable mandrel. The pattern is so designed as to give maximum strength in the directions required. The strands can either be run from a creel through a resin bath before winding or pre-impregnated materials can be used. When the right number of layers have been applied, the wound mandrel is cured at room temperatures or in an oven.
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