| Quantity: | |
|---|---|
23042
YIXUN mold
8480419090
This injection mold is customized for the R05C01 Primary Cap with TPU overmolding, adopting 1+1 cavity two-shot integrated overmolding technology. It completes the forming of rigid HDPE base and soft TPU outer coating in one single injection cycle, eliminating extra manual assembly procedures. Equipped with pin-point sub gate feeding system, the mold achieves strict surface appearance control for disc-shaped cap parts, ideal for mass production of anti-slip knob caps, equipment foot pads and positioning base components.
| Item | Specification |
|---|---|
| Mold Cavity | 1+1 Two-shot cavity layout |
| Main Substrate Material | HDPE TAISOX 7200 |
| Overmolding Material | TPU Shore 35A |
| Uniform Shrinkage Rate | 1.020 |
| Gating Method | Pin-point sub gate (fine nozzle point gate) |
| Front Cavity Steel | P20 |
| Rear Core Steel | P20 |
| Forming Process | One-step integrated two-shot overmolding |
The finished part is a disc-type cap with central concave boss and bottom plug-in column with positioning notch. It can be directly inserted and locked onto mating parts for quick assembly. Multiple tiny through holes are distributed on the top disc surface, serving for weight reduction, air ventilation, anti-slip friction and positioning marking.
HDPE Hard Base Frame: Features high structural rigidity, excellent impact resistance, acid & alkali corrosion resistance and ultra-low water absorption, maintaining long-term dimensional stability and installation fastening strength.
TPU Soft Outer Layer: Delivers ultra-soft touching feeling, outstanding anti-slip property, wear resistance and shock absorption, greatly optimizing the hand touch and anti-slip effect of the contact surface.
Integrated Molding to Cut Production CostTwo-shot overmolding finishes hard substrate and soft cladding in one process, no secondary assembly needed. It effectively reduces labor expense and cumulative tolerance error from separate component fitting.
Cost-Effective & Efficient Mold ConfigurationP20 mold steel boasts short CNC machining cycle and moderate tooling investment, perfectly matching small & medium batch production demands. The pin-point gate design supports automatic runner separation, which simplifies post-processing and realizes standardized appearance quality management.
Strong Environmental AdaptabilityThe combination of HDPE and TPU materials has great anti-aging ability against UV and damp conditions. The finished product keeps stable service performance under outdoor and high-humidity working environments with prolonged service life.
Precise injection temperature parameter control is required during two-shot molding, to prevent high-temperature TPU melt from penetrating and damaging the pre-molded HDPE base part.
Fine adjustment of shrinkage compensation value shall be done during initial mold trial, to avoid warpage, peeling and delamination of the overmolded TPU layer.
Additional exhaust slots shall be optimized on the large flat disc area of the mold cavity, together with reasonable packing pressure setting, to eliminate sink marks, air streaks and flow lines on the product surface.
This molded two-color cap part is widely applied in household appliance foot pads, equipment anti-slip positioning bases, instrument adjustment knobs, suction cup fixing covers and electronic assembly locking caps.
Q1: Can we adjust the hardness of the overmolded TPU material?A: Yes, we support customized Shore hardness of TPU ranging from 30A to 95A according to your actual usage demands.
Q2: Is the mold steel upgradable to higher grade material?A: Optional steel grades including 718H, S136 and NAK80 are available upon request, for longer mold lifespan and higher polishing finish.
Q3: Is the cavity quantity customizable?A: Multi-cavity solutions such as 2+2, 4+4 cavities can be designed to improve hourly output for large-volume orders.
