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Particle properties | |||||
Properties | Test method | Unit | Value | ||
Melt index | ISO1133 | g/10min(190ºC,2.16kg) | ≤5 | ||
Density | ISO1183 | g/cm3 | 1.25~1.3 | ||
Tensile strength | ISO527 | MPa | >=20 | ||
Elongation | ISO527 | % | >=200 | ||
Blown film conditions | Unit | Recommended value | |||
Pre-drying | Temperature | ºC | 60-80 | ||
Time | Hr | 4-6 | |||
Cylinder temperature | Rear | ºC | 130-140 | ||
Center | ºC | 145-160 | |||
Front | ºC | 145-160 | |||
Three-way valve | ºC | 145-160 | |||
Mould | ºC | 145-160 | |||
Properties of 20 μm thick film | |||||
Properties | Test method | Unit | Value | ||
Tensile strength | Transverse | ISO527 | MPa | >=18 | |
Longitudinal | ISO527 | MPa | >=20 | ||
Elongation | Transverse | ISO527 | % | >=500 | |
Longitudinal | ISO527 | % | >=200 | ||
Right-angle tearing strength | ISO527 | kN/m | >=100 | ||
Heat seal strength | ISO527 | N/15mm | >=3 | ||