1. Material Efficiency
- Hot Runner System: Minimizes material waste by maintaining molten plastic in heated channels, eliminating the need for cold runners. Ideal for high-volume production.
- Cold Runner System: Generates solidified sprue and runner waste, increasing material consumption (up to 5-15% extra). Requires post-processing to remove excess plastic.
2. Cycle Time &. Productivity
- Hot Runner: Shorter cooling time as only the part solidifies. Enables faster cycle times (15-30% reduction), boosting output for large bins.
- Cold Runner: Longer cooling required for both part and runners. Slower cycles, less suitable for mass production.
3. Part Quality
- Hot Runner: Consistent melt temperature reduces weld lines and improves surface finish. Enables multi-gating for uniform filling of large bins.
- Cold Runner: Higher risk of flow marks, sink marks, or uneven filling due to premature cooling in runners.
4. Mould Complexity &. Cost
- Hot Runner: Higher initial investment (20-40% cost increase) due to heated components and precise temperature control systems. Complex maintenance.
- Cold Runner: Simpler design with lower upfront costs. Preferred for prototypes or low-volume batches.
5. Gate Marks
- Hot Runner: Smaller, less visible gates (valve-gated systems possible). Critical for aesthetic-focused bins.
- Cold Runner: Larger gate vestiges, requiring secondary trimming.
6. Energy Consumption
- Hot Runner: Continuous heating increases energy use but offsets costs through material savings in long runs.
- Cold Runner: Lower energy use during operation but higher material costs over time.
Recommendation:
- Hot Runner: Optimal for 1100L bins in mass production (10,000+ units), prioritizing quality, efficiency, and material savings.
- Cold Runner: Suitable for prototypes, small batches, or budget-limited projects despite higher per-unit material costs.
Key Technical Terms:
- Hot Runner for 1100L Trash Bin Mould: Thermally controlled manifold, cartridge heaters, nozzle tips.
- Cold Runner: Sprue, runner channels, manual trimming, regrind material.
Please contact us for more information of 1100 Trash Bins Moulds, thank you!