Insert molding integrates metal terminals, pins and electronic hardware inside plastic parts to eliminate separate assembly work.
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Insert molding encapsulates prefabricated hardware such as brass nuts, metal pins and conductive terminals directly inside plastic during injection, forming a single integrated structural part without subsequent assembly.
Many purchasers rely on manual press-fitting or screw assembly to combine plastic and metal parts. Runde’s precision insert molding eliminates loose-fit risks and cuts assembly labor costs. We deliver robust composite parts for automotive connectors, power tool housings and sensor equipment.
We are not only mold makers but your engineering partner. We analyze insert positioning, shrinkage tolerance and anti-rotation structure to prevent insert shifting and ensure long-term structural reliability for your mass production.
Custom mold positioning, magnetic and vacuum jig design to keep inserts stable during plastic injection filling.
DFM wall thickness guidance, insert knurling optimization and balanced gate layout to eliminate plastic cracking and air voids.
Optimize insert surface texture structure to prevent loosening under repeated assembly torque loads.
Automated insert loading, locked molding parameters and Cpk monitoring to maintain stable dimensional accuracy.
We support a full range of engineering plastics and metal substrates for insert encapsulation, covering standard, reinforced and high-temperature resistant grades for automotive, electronic and industrial applications.
Explore our reliable insert molding projects integrating plastic with metal inserts. Each case demonstrates our precise insert positioning, anti-loosening structure design, and stable mass-production quality for composite components.
The projects below feature metal-embedded insert molded parts. For other molding solutions, visit our Injection Molding and Two-Shot Molding pages.
