Pet chips (film grade)
| Physical and mechanical properties of products | ||||
| Item | Unit | Control index | Test method | |
| Exterior | No mixed colors or different colors | Visual inspection | ||
| Intrinsic viscosity | dL/g | 0.64±0.015 | GB/T7932-2013 | |
| Carboxyl content | mol/t | 30±4 | ||
| Color value (drying) | L | - | ≥80.0 | |
| b | - | 4±2 | ||
| Alien particles | wt% | ≤0.4 | ||
| 100-grain weight | g/100 | 3±0.5 | ||
| Water conent | wt% | ≤0.4 | ||
| Diethylene glycol content | wt% | 1±0.3 | ||
| Melting point | °℃ | 260±2 | ||
| Ash | % | ≤0.06 | ||
| Iron content | mg/kg | ≤2 | ||
| Aggregate particles(≥10μm)Aggregate particles | piece/mg | ≤1 | ||
| Powder | mg/kg | ≤100 | ||
| Remerk: 20:00 Flm grade slice color volue L 83.20 b 4.44 04:00 Flm gade skce color volue L 83.43 b 4.31 | ||||
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