指标名称 Item |
单位 Units |
|
标准 Standard |
|
定量 Basis weight |
g/m² |
60.0 |
70.0 |
80.0 |
90.0 |
100.0 |
定量横幅差 CD difference of basis weight |
g/m² |
±2.0 |
±2.0 |
±2.0 |
±3.0 |
±3.0 |
厚度 Thickness |
µm |
≥77 |
≥89.5 |
≥102 |
≥115 |
≥128 |
厚度横幅差 CD difference of Thickness |
% |
±6.0 |
±6.0 |
±6.0 |
±7.0 |
±7.0 |
松厚度 Bulk |
cm³/g |
≥1.28 |
≥1.28 |
≥1.28 |
≥1.28 |
≥1.28 |
表面吸收重量 COBB |
g/m² |
|
≤38 |
|
|
|
平滑度 Bekk smoothness |
S |
≥30 |
≥30 |
≥28 |
≥26 |
≥26 |
平滑度两面差 Bekk difference of both sides |
% |
|
≤20 |
|
|
|
CIE白度 Whiteness |
% |
|
30–40 |
|
|
|
白度 ISO Brightness |
% |
71–73 |
|
|
纵断长MD Break Length |
Km |
≥4.2 |
|
|
不透明度 Opacity |
% |
≥87 |
≥90 |
≥91 |
≥92 |
≥92 |
表面强度 Surface strength |
m/s |
|
≥2.5 |
|
|
|
横向耐折度 Folding strength CD |
time |
|
≥10 |
|
≥8 |
|
匀度 Formation |
% |
|
|
≥15 |
|
|
水份 Moisture |
% |
|
5.0-8.0 |
|
尘埃度 Dust degree |
pc/m² |
( 0.2-0.5mm²) ≤40, > (0.5-1.5mm²)≤4 , > 1.5mm² : 0 |
色相 Color shade |
L: ≥94, a: -0.7±0.2, b: 12±1 |