Question

What is back pressure in injection moulding
​

Answer 1

Answer:

Back Pressure in an injection molding process is often defined as “the resistance of the screw to recover as the metering section pumps molten plastic through the non-return valve to the front of the screw.” ... When this position is reached, the screw will stop rotating.

Back pressure (or backpressure) is a resistance or force opposing the desired flow of fluid through pipes, leading to friction loss and pressure drop. The term back pressure is a misnomer, as pressure is a scalar quantity, so it has a magnitude but no direction.

Answer 2

Answer:

Black pressure in injection moulding is defined as

"the resistance of the screw to recover as the metering section pumps molten plastic through the non-return valve of the front of the screw ". when this position is reached , the screw will stop rotating.