- Industry: Software
- Number of terms: 1241
- Number of blossaries: 0
- Company Profile:
Moldflow develops plastic injection molding software.
The no-flow temperature is the temperature at which a polymer ceases to flow inside the mould cavity after injection.
Industry:Software
The non-return valve is located in front of the injection screw on an injection moulding machine. It allows material to flow in one direction and closes to prevent back flow.
Industry:Software
The part is the object that will be made. It is the finished product of the moulding process.
Industry:Software
The parting plane is the surface of the two mould halves that separates when the mould opens.
Industry:Software
The period during the injection moulding process when plastic is injected to fill the cavity.
Industry:Software
The Poisson's ratio (n12) pertains to a material under tensile stress, and is defined as the ratio of lateral (or transverse) contraction strain (in the second principal direction) to the longitudinal strain (in the first principal direction.)
Industry:Software
The pressure gradient in the molten polymer is the pressure drop per unit of length along the flow path. The pressure drop from one location to another is the force that pushes the molten polymer to flow during filling. Polymer always moves from higher pressure to lower pressure, akin to water flowing from higher elevations to lower elevations.
Filling with a more uniform pressure gradient is desirable. Non-uniform pressure gradients often indicate problems such as flow hesitation, over-packing (resulting in flash) and under-packing (resulting in excessive shrinkage).
Industry:Software
The pressure stroke is the proportion of the total stroke performed under pressure control. This is the distance between the velocity to pressure change-over position and the screw forward position in an injection moulding machine.
Industry:Software
The pressurisation phase is the period during the injection moulding process when extra plastic is injected to ensure all corners and edges of the mould cavity are full of plastic.
Industry:Software
The racetrack effect occurs when molten plastic flows into thicker regions more easily than thin regions. The flow divides and then fills thicker sections before combining again to fill the thinner sections. The recombined flow can reverse to meet the oncoming flow in the thinner section.
The racetrack effect can cause air traps, weld lines and regions of high internal stress.
Industry:Software
