Also known as: bp.
BP stands for various terms. Discover the full forms, meanings, and possible interpretations of BP across different fields and industries.
The resistance of the molten plastic material to forward flow. In molding, back pressure increases the temperature of the melt, and contributes to better mixing of colors and homogeneity of the material. As back pressure increases, so does cycle time. The resistivity of molten plastic material to forward flow. In extrusion, the resistance of molten polymer to flow forward, caused by a pressure difference between two points along the path of flow.
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