• Part Name: Two-color overmolded power tool handle
• Structure: Hard plastic substrate + soft TPE/TPR overmolding
• Material Matching
  • Hard base: PP, ABS, PA66+GF
  • Soft grip layer: TPE / TPR elastomer
• Function: Ergonomic curved grip, anti-slip, vibration damping, comfortable hand feel
• Surface: Matte texture, clear boundary between two colors, no flash, no delamination

✅ Rotary Two-Shot Injection Mould Solution Rotary plate two-color mould structure. First shot molding hard plastic frame, second shot overmolding soft TPE in one full cycle. Greatly improve efficiency compared with secondary manual assembly.

✅ Precision Color Boundary Control Optimized sealing structure at the hard/soft material joint to prevent material overflow, ensure neat separation line between two colors, avoid flash and mixed-color defects.

✅ Anti-Delamination Mould Design Combined with product structure optimization, enhance mechanical interlock between hard substrate and soft TPE layer, effectively prevent peeling during long-time use.

✅ Custom Texture Etching Cavity surface can be etched with anti-slip grain on the soft grip area to meet ergonomic anti-slip requirements.

✅ Balanced Cooling Layout Conformal cooling channels arranged along curved handle contour. Stabilize molding cycle, reduce deformation, shrinkage and warpage on long curved handles.

✅ Durable Mould Steel for Long Mass Production

• Cavity & core: 718H / P20HH / S136H
• Service life: 500,000 ~ 1,000,000 shots
• Adapt to continuous production of engineering plastics and TPE elastomers

• Garden hand tool handles
• Electric drill / grinder / pruning tool grips
• Spray gun, cleaning tool handheld parts
• Hardware hand tool anti-slip handles

1. DFM analysis: evaluate undercut, demolding, TPE bonding risk and two-color boundary design
2. Complete 3D mould design + 2D engineering drawings
3. CNC, EDM, wire cutting processing, texture etching
4. Mould assembly, trial molding, sample verification
5. Process tuning to solve delamination, flash, color shift and warpage
6. Long-term after-sales support and spare parts supply