Two-Shot Injection Molded Anti-Slip Handle Grip

Designed to meet the human-machine interaction needs of handheld power tools, testing instruments, and automated operation terminals, this component is manufactured using a two-shot injection molding process. It features a composite structure consisting of a black rigid skeleton and a gray soft overmold. The body showcases an ergonomic, streamlined curved design. The central gray area integrates a fine granular texture with longitudinal guide grooves to enhance friction torque and grip comfort during operation. The black ends provide rigid support and mounting interfaces for internal metal inserts, ensuring structural stability under high-frequency vibration or torque loads.

The core of the manufacturing process lies in controlling the bonding strength between two materials of different hardness levels (such as hard PP/ABS and soft TPU/TPE) to prevent delamination or peeling during long-term use. Precise control of the mold parting surface accuracy is essential to eliminate flash and burrs at the junctions, while ensuring consistent leather grain texturing on appearance surfaces to avoid sink marks or flow lines that could affect手感 (hand feel) and aesthetics. For the complex curved features shown, gate locations and holding pressure parameters are optimized during injection molding to maintain uniform wall thickness and reduce internal stress deformation.

Leveraging the mature injection molding process chain at our Ningbo facility, we offer one-stop services ranging from mold development and two-shot molding to final assembly. Equipped with Haitian precision injection molding machines, our factory ensures stable production of structural parts with strict dimensional tolerances (typically controlled within ±0.05mm) and high aesthetic standards. Buyers are required to provide 2D/3D drawings specifying material grades, Shore hardness requirements, and tolerances for key mating positions. We evaluate costs and lead times based on mold complexity, annual demand, and secondary processing requirements, supporting custom development from drawings.