Below are words commonly used in the plastic injection molding industry:
Additive Manufacturing – The technical term for 3D printing — the process of manufacturing a three-dimensional object by placing layer on top of layer — based on a CAD model.
Blow Molding – A technique in which plastic is forced to take on the shape of a mold cavity by way of a hollow plastic tube applying internal pressure with air.
Blushing – The whitening of plastic in areas that come under high stress.
Casting – Injecting liquid plastic into a mold without using pressure to form solid o-hollow articles.
Cavity – A hollow part of a mold that forms the outer part of a plastic-molded object.
Curing – Using heat, chemicals or radiation to make a polymer more stable and functional by changing its physical properties.
Degradation – A change in physical properties of plastic resulting from light exposure, heat, exposure to oxygen and general weathering.
Extrusion – Forcing molten plastic through a die in order to form continuous shapes.
Fabricating – The use of various manufacturing methods to create plastic products — examples of fabrication processes include: cutting, tapping, fastening and punching such plastics as sheets, tubes, rods and more.
Gate – Molten resin flows through the gate in order to get from the runner to the cavity of the mold.
Impact Resistance – The measure of how much a plastic item can withstand high-speed stresses.
Injection Molding – The process of creating plastic parts and components by way of heating granular or powdered plastics and then forcing the liquid into a mold.
Insert Molding – The process of forming an object by molding plastic around metal inserts.
Land Area – The part of a mold where surfaces come in contact with one another when the mold is closed.
Low Temperature Flexibility – The ability of plastic to withstand fracturing at low temperatures.
Mar Resistance – A glossy plastic’s resistance to damage caused by abrasion.
Masterbatch – Within a polymer base — the concentration of pigments, fillers, additives and other substances.
Melt Flow – The viscosity of a polymer based on the polymer’s weight when extruded under certain pressure and temperature — varying by specific polymer.
Memory – A plastic article’s tendency to revert to previous dimensions based on earlier stages of manufacturing.
Metalizing – Covering or coating any plastic item with metal.
Mineral Reinforcements – Inorganic substances such as clay, talc or mica used as filler in plastics.
Mold Frame – The steel plates that comprise the components used in molding — mold frames typically include: cores, runner systems, cavities, cooling systems and ejection systems.
Polymer – Organic compounds of high-molecular weight — naturally occurring or synthetically made.
Sink – Imperfections such as dimples that occur as plastic cools at different rates along the surface.
Splay – Streaks occurring as the result of moisture in resin.
Sticking – A complication during ejection, during which a part is lodged in half of a mold.
Tear Strip – A removable feature that creates a crisp end of a molded part.
Warp – Curving or bending that results as a part cools and shrinks at varying rates along a surface
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