Five Errors to Avoid When Manufacturing Injection Molding Parts

PUNE, India - June 3, 2025 - PRLog -- Just like other manufacturing processes, injection molding has its disadvantages, like a simple mistake can make a huge defect in the molded part. Anyone can make a mistake while producing a plastic injection mold design: an amateur while experimenting, or an experienced designer while performing other processes. These mistakes can lead to deformed and weak plastic parts. Hence, it is important to know these five errors to avoid when manufacturing injection molding parts.

1. Poor Part Design:

Ignoring key design principles is one of the most common errors while manufacturing injection mold design. This includes non-uniform wall thickness, rib placement, and draft angles. Because of this error, we can observe several issues like sink marks, warping, short shots, or difficulty in ejecting parts from the mold.

2. Wrong Placement of Parting Lines:

Parting lines play a critical role in the process of injection molding as it divide the core and cavity separately. The success and cosmetic appearance of molded parts are dependent on the placement of these parting lines.

3. Incorrect Incorporation of Draft:

The draft is an angle that is used in the process of injection molding to incorporate a design so that ejection can be performed easily. The proper use of draft can also reduce the chances of warping or part breakage.

4. Use of Wrong Material:

The selection of plastic material is the most important thing in the injection molding process. While selecting the material, you must check the thermal, mechanical, and chemical properties of the material as per the end use of the part.

5. Neglecting Quality Control and Testing:

The last but most crucial mistake in the injection molding process is negligence in quality control and testing. When you skip rigorous quality checks or assume only visual inspection is sufficient, it will have an adverse impact on your final product.

How OPM Helps:

OPM Plastics is one of the top mold manufacturing companies in India, which is known for its expertise in injection molding and tailored solutions for every project. Being the best plastic parts mold manufacturer, OPM works closely with clients to ensure all parts are designed with proper draft angles, optimal wall thickness, and advanced CAD & simulation tools to minimize design flaws.

Contact OPM Plastics today and experience another level of precision and expertise in the world of injection molding!

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