First of all, let's understand the production process and raw materials of the cat scratching board. 

Corrugated box is composed of corrugated board, corrugated board is made of corrugated core paper and several layers of paper or paperboard(refer to the definition of corrugated board national standard GB/T 6544-2008).

In order to facilitate expression, we call these layers of paper or cardboard tissue paper.

We use an intuitive formula to express: corrugated box > corrugated board = corrugated core paper + tissue paper.

The cat scratch board is made up of pieces of corrugated board stacked and bonded, and then extruded by a machine to ensure the adhesion between the paper, and then cut out the desired shape.

Corrugated board has two indexes: burst strength and edge pressure strength.

Edge compression strength mainly studies the compressive strength of corrugated board, which means how much force can be used to flatten corrugated board.

Which has little to do with the durability of cat scratching board.

The bursting strength can be vividly expressed as how much poking force the cardboard can bear under certain circumstances.

Which is mainly related to the fiber length and fiber binding force of the pulp. the higher the fiber length and fiber binding force, the greater the puncturing force it can bear. 

In view of the fact that the cat's paw is to scratch the paper directly, it is also similar to applying a poking force on the paper.

So the piercing strength can be used as an index to measure the durability of the cat scratch board.

Corrugated board is made of corrugated paper, and cat claws are more likely to scratch core paper and tissue paper.

So we must also consider the performance of core paper and tissue paper. 

Just in the national standard of corrugated paper, there is also an important parameter-longitudinal breaking lengt.

Which is a measure of the resistance of the paper to external force stretching, and is related to the fiber length and adhesion of the pulp.

1pc/shrink packing with color paper