注塑 vs 滚塑防护箱:工艺对比(2026)
制造工艺对比:注塑(高压、快速循环)vs 滚塑(低压、慢循环、无缝)。成本、交货时间、设计灵活性、耐用性。
| Aspect | Injection Molding | Rotational Molding |
|---|---|---|
| Pressure | High (500-1500 bar) | Low (atmospheric) |
| Cycle Time | 30-90 sec | 20-60 min |
| Tooling Cost | $8,000-50,000 | $3,000-15,000 |
| Min Wall Thickness | 1.0 mm | 3.0 mm |
| Max Size | Limited by machine tonnage | Unlimited (e.g. 3m+ kayak hulls) |
| Wall Uniformity | Variable (thin in corners) | Excellent (uniform throughout) |
| Stress Points | Weld lines, knit lines | None (seamless) |
| Material Options | ABS, PP, PC, PA, POM, PBT | PE (LDPE, LLDPE, MDPE, HDPE), PP, PVC |
| Color | Masterbatch (any color) | Masterbatch (limited colors) |
| Surface Finish | Glossy, smooth, detailed | Slightly textured, less detailed |
| Insert Molding | Easy (metal inserts) | Difficult (secondary operation) |
| Best For | Cases under 1m, precision detail, large volume | Large cases, hollow parts, low volume |
| Examples | Pelican Storm, iM2450, most cases | Kayaks, coolers, large bins |
结论
选择注塑:1m 以下防护箱、精密功能(锁扣、铰链)、大批量生产、复杂几何。选择滚塑:1m 以上防护箱、中空零件、小批量原型、无缝无应力结构。客信新材料大多数标准防护箱使用注塑以获得精度和速度。
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