Views: 0 Author: Site Editor Publish Time: 2025-05-20 Origin: Site
Location: Typically placed at the edge or parting line of the part.
Size: Larger gate (width: 1–3mm, thickness: 0.5–1.5mm).
Structure: Directly connects the sprue to the part; requires manual or mechanical trimming.
Mold Type: Uses a two-plate mold, making it simpler and cheaper.
Low flow resistance, suitable for thick-walled parts or high-viscosity plastics (e.g., PP, ABS).
Easier mold maintenance and lower manufacturing cost.
Visible gate marks, requiring post-processing (trimming).
Higher risk of weld lines (especially in multi-cavity molds).
Low-cost, large parts where appearance is not critical (e.g., containers, appliance housings).
Location: Often placed on the top or non-visible surface (multi-point gating possible).
Size: Very small (diameter: 0.2–1mm), resembling a needle point.
Structure: Requires a three-plate mold for automatic gate separation.
Ejection: The runner system detaches automatically during mold opening.
Minimal gate marks, ideal for high-gloss or transparent parts (e.g., lenses, medical devices).
Reduces weld lines and improves surface finish.
Enables balanced filling in multi-cavity molds.
More complex mold design (higher cost).
Higher flow resistance—not ideal for fiber-filled or high-viscosity materials.
Sensitive to contamination (clogging risk).
Precision parts, transparent components, and high-volume automated production.
| Feature | Side Gate | Pin-Point Gate |
|---|---|---|
| Gate Size | Large (manual trimming) | Very small (auto-separation) |
| Mold Type | Two-plate (simple) | Three-plate (complex) |
| Appearance | Visible marks | Nearly invisible marks |
| Flow Efficiency | Low resistance (thick parts) | High resistance (thin parts) |
| Cost | Lower | Higher (precision required) |
| Common Materials | PP, ABS, HDPE | PC, PMMA, PET |
Use Side Gate for cost-sensitive, large, or non-cosmetic parts.
Use Pin-Point Gate for high-end products requiring fine aesthetics or automated production.
Always consider material flow behavior, part geometry, and production volume when selecting a gate type. Consulting with a mold engineer can help optimize design and performance.
