| Customization: | Available |
|---|---|
| Type: | Copy Paper |
| Gram Weight: | 70g/75g/80g |
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Product Name
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A4 Copy Paper
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Weight
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g/m²
|
70g
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75g
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80g
|
|
70±1
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75±1
|
80±1
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Whiteness
|
%
|
95-97
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Chroma
|
|
L≥89 a 2.7-2.9 b -15.5±0.3
|
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|
CIE
|
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≥147
|
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|
Thickness
|
um
|
95±1
|
99±1
|
105±1
|
|
Ash
|
%
|
24-26
|
25-27
|
26-28
|
|
Surface absorption weight
|
g/m²
|
25-35
|
25-35
|
25-35
|
|
Thickness banner check
|
%
|
≤5
|
≤5
|
≤5
|
|
Opacity
|
%
|
≥93
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≥93
|
≥93
|
|
Longitudinal fracture length
|
km
|
≥3.4
|
≥3.4
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≥3.4
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Moisture
|
%
|
5.0-5.5
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5.0-5.5
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5.0-5.5
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Expansion rate
|
%
|
≤2.5
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≤2.5
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≤2.5
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Stiffness
|
mN.m
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0.30/0.12
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0.33/0.13
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0.40/0.14
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Smoothness
|
s
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≥18
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≥18
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≥18
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Smoothness difference on both sides
|
%
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≤25
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≤25
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≤25
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Dust degree
|
unit/m²
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≤0.5mm²≤280;0.5-1.5mm²≤20;
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Grade
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C(A/B Optional)
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