Injection Mold Design Guide File

: Located on the parting line. Easy to machine and modify, but leaves a visible witness mark that must be manually or mechanically trimmed.

Ensure the sprue taper is between 2° and 3° to allow easy pull-out during mold opening.

Add 1.0 additional degree of draft for every 0.02mm (0.001 inches) of texture depth. injection mold design guide

Rounded corners allow plastic to flow more naturally, reducing pressure requirements.

An injection mold is split into two primary halves: the (moving half) and the Cavity (fixed half). Understanding the standard assembly structure is the first step in mold design. : Located on the parting line

: Move the gate location to change the flow front pattern, increase melt temperature, or increase wall thickness near the knit zone to promote faster material mixing.

Used primarily in three-plate or hot runner molds; leaves a tiny dot vestige on top of the part. Understanding the standard assembly structure is the first

To optimize mechanical strength and material flow, use the following proportions for internal and external corners: : External Radius ( Rocap R sub o ) :

In multi-cavity molds, ensure that the flow path distance from the main sprue to every single cavity is identical. Unbalanced runners cause uneven filling, flashing, and dimensional variations across parts.

: Reduce the thickness of the rib base or boss wall to a maximum of 60% of the nominal wall.

The you plan to use (e.g., ABS, PP, Nylon, Polycarbonate) The anticipated production volume for this tool