Paper and Cardboard Testing with a Texture Analyser – Part 3

Reliable Testing for Packaging and Print

Tensile Test
Example standard: ASTM D828

Tensile testing is applied to paper products for various reasons to assess strength in use; standards such as ASTM D828 cover the methods required to measure the tensile properties of paper and paperboard. Tensile tests are used for combined corrugated board but not as frequently as bending, compression and puncture.

Paper and Cardboard Testing with a Texture Analyser – Part 2

Reliable Testing for Packaging and Print 

Pin Adhesion Test
Example standard: TAPPI T821

Another factor that controls the quality of corrugated board is the strength of adhesion between the corrugating medium and its facings. This adhesion can be measured directly using a ‘pin adhesion test’, where pin adhesion is the force to separate the two components. In this test, pins are inserted between the facing and fluted medium, then attached to rigs connected to the loading arm and base. The rigs are pulled apart at constant speed until the facing is separated from the flute tips. Separation of all bond lines is not necessary. This test assesses the quality of the bond formed when the board was combined, and can be used to detect some manufacturing defects such as poor adhesive penetration and spotty adhesive application.

Paper and Cardboard Testing with a Texture Analyser – Part 1

Reliable Testing for Packaging and Print

 

Corrugated cardboard is used all over the world for strong, cheap and light recyclable packaging.

It is made up of a fluted interior sandwiched between linerboards. Variations include a linerboard on only one face, or several stacked layers. It is generally made into cardboard boxes, although occasionally used in sheet form for strengthening or insulation purposes. Most boxmakers perform a wide range of tests on their products as well as the components used to make them. Many boxes are made to certain customers’ demands, and the aim of these tests is to maximise strength (meeting the customer’s needs) while minimising costs from component materials and weight.