pitfallsinmolding.com

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Definitions (78)

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parting line


Contour line on the part separating core and cavity.
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thermoset


A type of plastics that must be cured, forming network like structures that do not soften at high temperature.
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valcanisation


A process by which a network of cross linking is introduced in to an elastomer to strengthen it.
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amorphous polymer


Amorphous means irregular, having no discernible order or shape. In the context of solids, the molecules are randomly arranged, as in glass, rather than periodically arranged as in a crystalline mater [..]
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cavity pressure


Pressure on the melt in side the space between core and cavity as the melt moves to fill the mould.
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change over- fill/pack: switch over point fill to pack


The point on injection stroke at which filling phase with speed profile ends and pack or pressure phase with pressure profile starts.
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clamp force


It is force applied by the machines clamping unit to the mould during filling, packing and holding phases of moulding cycle. Unit is Tons or kN.
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cooling channels

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co-polymer


Polymers that are derived from more than one species of monomers.
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cross linking


A process in which bonds are formed joining adjacent molecules. At low density, these bonds add to the elasticity of the polymer and at high density eventualy produce rigidity in the polymer.
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