Insert Molding
At NetProto, our insert molding services integrate metal and plastic seamlessly to create durable, high-performance parts. From small prototypes to large-scale production, we deliver solutions tailored to your needs with precision, speed, and cost-efficiency.
What is Insert Molding?
Insert molding is a specialized injection molding process where pre-formed inserts (typically metal or plastic) are placed into a mold and encapsulated with molten plastic. The result is a single, cohesive component with enhanced functionality and durability.
This method is ideal for applications requiring metal strength and plastic’s versatility in a single part.
Our Insert Molding Capabilities
Wide Range of Insert Materials
Metal: Brass, aluminum, stainless steel, copper, etc.
Plastic: High-performance thermoplastics.
High Precision Molding
Advanced equipment ensures tight tolerances and seamless material bonding.
Scalable Production
From small-batch prototypes to high-volume runs, we provide cost-effective solutions for any project size.
Custom Solutions
Our team works with you to design molds and inserts that meet your specific requirements, ensuring performance and cost-efficiency.
Benefits of Insert Molding
Insert molding combines the best features of multiple materials, offering:
Enhanced Strength: Combines the rigidity of metal with the versatility of plastic.
Reduced Assembly Time: Eliminates secondary assembly processes, such as bonding or fastening.
Durability: Provides improved resistance to wear, vibration, and stress.
Design Flexibility: Allows complex geometries and tight tolerances.
Lightweight Components: Reduces part weight while maintaining structural integrity.
Insert Molding Design Considerations
To achieve optimal results, consider the following design guidelines for insert molding:
Insert Placement
Inserts should be securely positioned in the mold to prevent shifting during the injection process.
Material Compatibility
Ensure compatibility between the insert material and the plastic to guarantee a strong bond.
Wall Thickness
Maintain consistent wall thickness around inserts to prevent warping and uneven stress.
Undercuts & Drafts
Minimize undercuts and ensure appropriate draft angles for smooth ejection.
Thermal Management
Account for thermal expansion differences between plastic and metal materials during the molding process.
Ready to Start Your Insert Molding Project?