.jpeg?w=3984&h=2240)
Compared with other films, VMBOPA film has higher strength and excellent gas barrier properties, and is non-toxic and harmless. It is an ideal material for food preservation and aroma preservation. The composite film materials combining VMBOPA with CPP or PE are widely used in food packaging, chemical and pharmaceutical product packaging, and decorative balloons, etc.
|
测试项目 Item |
测试方法 Testing methods |
单位 Units |
标准值 Sdandard values |
|
|
厚度 Thickness |
GB/T 6672 |
μm |
10-18 |
|
|
铝层厚度 Al Thickness |
GB/T 15717 |
Ω/□ |
≤2.5 |
|
|
密度 Density |
GB/T 1033.1-2008 |
ɡ/cm3 |
1.15 |
|
|
附着力Aluminum adhesion |
BB/T 0030-2019 |
% |
≤10 |
|
|
透氧率 OTR |
ASTM D 3985 |
cc/m2·day |
≤1.5 |
|
|
动摩擦系数 |
非镀铝面/ 非镀铝面 |
|
- |
≤0.6 |
|
湿润张力 Surface tension |
镀铝面 Al side |
GB/T 14216-2008 |
mN/m |
≥48 |
|
|
非镀铝面Non-Al side |
|
|
≥42 |
|
拉伸强度 Tensile strength |
纵向（MD） |
GB/T 1040.3 |
Mpa |
≥180 |
|
|
横向（TD） |
|
|
≥180 |
|
断裂伸长率 Elongation at break |
纵向（MD） |
GB/T 1040.3 |
% |
≤180 |
|
|
横向（TD） |
|
|
≤180 |
|
热收缩率 Heat shrinkage rate |
纵向（MD） |
150℃/30min |
% |
≤3.0 |
|
|
横向（TD） |
|
|
≤2.0 |