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Back pressure

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 colours and homogeneity of the material. However, as back pressure increases, so does cycle time.

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Related terms

back pressure
Industrial machinery; Industrial lubricants

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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 ...

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Manufacturing; Plastic injection molding

The curve plotting the applied stress on a test specimen versus the corresponding strain. Stress can be applied through shear, compression, flexure, or tension.

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Manufacturing; Plastic injection molding

The decay of stress at a constant strain.

linear mold shrinkage
Manufacturing; Plastic injection molding

The difference between the size of the part and the size of the mold cavity. Values given are often the average of a range.

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Manufacturing; Plastic injection molding

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screw travel
Manufacturing; Plastic injection molding

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Manufacturing; Plastic injection molding

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