PAPER TESTS

Basis Weight - Grammage

Determine the paper weight in g/m²

Thickness

Determine the paper thickness in µm

Moisture

Determine the moisture content of a sheet of paper, in %

Tensile

Determine the tensile strength and the stretch at break of paper dry method

Determine the tensile strength and the stretch at break of paper wet method

Determine the tensile strength, strain at break, energy absorption (TEA) and tensile stiffness

Determine the tensile stiffness and orientation TSO

Tearing resistance - Tear growth

Determine the tearing resistance according to Elmendorf

Determine the tear growth accrding to Brecht-Imset

Folding endurance

Determine the folding endurance according to Schopper

Determine the folding endurance according to Köhler-Molin

Bursting strength

Determine the bursting strength of paper

Bending stiffness

Determine the bending stiffness of paper – Resonance method

Determine the bending resistance of paper – 7.5° – 15° – 50 mm Constant Rate of Deflection

Determine the bending stiffness of paper – Static method – 5° – 50 mm

Determine the bending stiffness of paper – 15° – 10 mm

Determine the bending stiffness of paper – Taber method – 7,5° – 15° – 50 mm

Roughness/Smoothness

Determine the smoothness according to Bekk

Determine the roughness according to Bendtsen

Determine the roughness Parker Print Surf method

 

Friction

Determine the coefficient of friction between sheets of paper inclined plane method

Determine the static and dynamic coefficient of friction

Contact angle

Determine the contact angle of a drop of water on a paper surface

Air permeance

Determine the air permeance of a paper according to Bekk

Determine the air permeance of a paper according to Bendtsen

Determine the air permeance of a paper according to Gurley

Optical properties

Determine Rx-Ry-Rz with Illuminant C – UV adjusted

Determine Rx-Ry-Rz with Illuminant D65 – UV adjusted

Determine the ISO Brightness with Illuminant C – UV adjusted and excluded

Determine the ISO Brightness with Illuminant D65 – UV adjusted and excluded

Determine the CIE Whiteness with Illuminant D65 – UV adjusted

Determine the L*a*b* of white paper with Illuminant C – UV adjusted

Determine the L*a*b* of white paper with Illuminant D65 – UV adjusted

Determine the L*a*b* of  coloured paper with Illuminant C – UV adjusted

Determine the L*a*b* of coloured paper with Illuminant D65 – UV adjusted

Determine the L*a*b* of white paper with Illuminant D50 – 45/0 or 0/45 geometry

Determine the L*a*b* of printed paper with Illuminant D50 – 45/0 or 0/45 geometry

Determine the Optical density of printed paper

Determine the Linearity of a densitometer

Determine the Gloss at 75° – converging beam

Determine the Opacity with Illuminant C – UV adjusted

Chemical properties

Determine the Kappa number of a sheet of paper

Determine the pH of an aqueous extract, cold extraction

Determine the alkali reserve of a paper

Determine the ash residue at 525°C

Determine the ash residue at 900°C

Pick resistance

Determine the pick or delamination resistance of a paper

Print (oil) penetration

Determine the print penetration, oil penetration or varnishability of a paper

Heliotest

Determine the gravure printability of a paper using the Heliotest method

Cobb water absorption

Determine the water pick-up of a paper according to Cobb 60

General paper tests

Open the line to get the brief description of each specific test. Follow the link to get a detailed description of each test, the levels and other relavant details.