Inspection items | Standard requirements | |||||
PET/AL/NY/CPE | CPE/AL/NY/CPE | PET/NY/CPE | PET/VMPET/CPE | CPE/CPE | VMPE/CPE | |
Tensile strength(N/15mm) | ≥100 | ≥80 | ≥80 | ≥80 | ≥30 | ≥30 |
elongation at break (%) | ≥80 | ≥80 | ≥80 | ≥80 | ≥300 | ≥300 |
Anti pendulum impact (J) | ≥2.0 | ≥2.0 | ≥2.0 | ≥1.0 | ≥1.0 | |
Oxygen permeation rate cm3/(㎡.24h.0.1mpa) | ≤0.5 | ≤100 | ≤2 | - | ≤100 | |
water vapor permeance g/(㎡.24h) | ≤0.5 | ≤10 | ≤2 | ≤15 | ≤2 | |
Composite strength (N/15mm) | PET/AL ≥2.5 | PE/AL ≥2.5 | PET/NY ≥2.5 | PET/NY ≥2.5 | CPE/CPE ≥2.5 | VMPE/CPE ≥2.0 |
AL/NY ≥3.5 | AL/NY ≥3.5 | NY/CPE ≥5 | NY/CPE ≥5 | - | - | |
NY/CPE ≥5 | NY/CPE ≥5 | - | - | - | - | |
Heat sealing strength(N/15mm) | ≥100 | ≥80 | ≥80 | ≥80 | ≥80 | ≥80 |
Puncture strength (N national standard) | ≥12 | ≥8 | ≥10 | ≥10 | ≥3 | ≥3 |