Draft angle injection molding


Draft angle injection molding

What is the draft angle?

The draft angle is the amount of taper for molded or cast parts perpendicular to the parting line. It can be measured in degrees or mm/mm (in/in).

Why Draft angle injection molding?

1. Reduces the chance of damage to the part due to friction during release.

2. Reduces wear and tear and chances of damage to the mold.

3. Ensures a uniform, smooth, unscratched finish when required.

4. Ensures the integrity and uniformity of other surface finishes and textures.

5. Reduces overall cooling time by lessening or eliminating the need for unconventional ejection setups.

6. Most, if not all, of these benefits offer either direct or indirect overall production cost reductions.

Draft angle injection molding

Draft angles are generally a requirement of injection molding design.

Draft should be a part of design for manufacture, and all stakeholders and contributors should be aware of its need at the outset of the design process. This includes product designers, design engineers, and of course, the customer. This allows considerations for design requirements to be taken into account.

Any draft is always better than no draft.