Driven by global food delivery and ready-to-eal growth, bowls are the fastest-growing thermoforming application.
| Material | Transparency | Max Temperature | Microwave Safe | Recyclable |
|---|---|---|---|---|
| PP (Polypropylene) | Translucent to opaque | 120°C | ✓ Yes | Yes (#5) |
| PS / HIPS (Polystyrene) | Opaque (HIPS) or clear (GPPS) | 70°C | ✗ No | Limited (#6) |
| PET / APET (Polyethylene Terephthalate) | Crystal clear | 70°C | ✗ No | Yes (#1) |
| PLA (Polylactic Acid) | Clear | 55°C | ✗ No | ♻ Compostable |
| CPET (Crystallized PET) | Opaque | 220°C | ✓ Yes (oven-safe) | Yes |
Deep-draw bowls are prone to thin bottoms and thick rims if the forming process is not precisely controlled. SAYEAH machines solve this with servo motor-driven plug-assist stretching, which programs the exact speed and depth of the plug motion before forming pressure is applied. This delivers uniform wall distribution from rim to base — critical for bowls that must withstand hot liquid and microwave heating without deforming.
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