Back Pressure
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Definition:
In extrusion, the resistance of the molten plastic material to forward flow. In molding, the viscosity resistance of the material to continued flow when the mold is closing. Back pressure increases the temperature of the melt, and contributes to better mixing and homogeneity.
Definition Copyright ©1989 CRC Press LLC. All rights
reserved.
<Back to Last Page> <Glossary Home> <Random Word>
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