Projection area in plastic injection molding is a method used in injection molding to determine the clamping force required to hold the mold closed during the injection process. The projected area is the area of the part perpendicular to the direction of the clamping force, and it is used to calculate the force needed to keep the mold closed as the molten plastic is injected into the mold. During the injection molding process, the molten plastic is injected into a mold cavity under high pressure. The mold is held closed by a clamping unit that applies a force to keep the two halves of the mold together. The amount of force required to hold the mold closed is determined by the projected area of the part being molded
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