Double A Paper 80gsm - A4 size - 1 ream - 500 sheets

Description

Double A Paper Properties

Double A has *0 million fibers per gram, a unique characteristic that gives Double A its:

• Smooth surface

• High density

• High opacity

• Low ash content

• Good formation

Smoothness

Smoothness is a measure of the flatness of a papers surface and affects how it moves through a printer or copy machine. A smoother surface also has a high-quality feel, is pleasing to the eye, and is particularly well suited to high-speed machines.

 

Roughness is taken into account when measuring a papers smoothness, and the lower the number the better

the paper. Paper roughness varies from the top of a sheet to the bottom due to gravitational forces.

 

Bending

Bending strength improves a papers contact with the copy machine and prevents tearing the higher the bending strength the better.

 

Density

Another property of good paper is density, which refers to its strength, smoothness and opacity the higher

the density, the smoother the surface, but with lower opacity and strength.

 

Opacity

Opacity is the measure of how much light is prevented from passing through a sheet. High opacity is usually associated with high filler content and results in a high ash reading under test conditions. Double As opacity comes from the unique features of its pulp, giving it high opacity with low ash content.

 

Ash Content

Ash Content is another key to good paper formation a property that is associated with filler use, high ash content equals high filler content.

 

Formation

Formation is an indicator of how evenly fibers and fillers are distributed in a paper sheet. Paper with poor formation has an uneven surface with thin spots and thick spots.

 

Light Fastness

Light fastness is a good indicator of a papers resistance to fading or change of color when exposed to sunlight

the longer the line, the longer a paper will retain color.