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The degree of hardness and hardness of rubber materials can be expressed in terms of Shore hardness. The Shore hardness of rubber materials can be measured with a durometer.
In order to accurately control the amount of ink transferred to the substrate material, it must be ensured that the substrate material is in close contact with the ink in the cells. So, in the end should choose how much hardness of rubber material is more appropriate? This depends to a large extent on the type of substrate material.
The rougher the substrate material, the greater the elasticity, the greater the hardness of the rubber layer of the impression cylinder. For example, an impression cylinder with a rubber layer hardness of 90 Shore A or more is suitable for printing recycled cardboard. Under the same conditions, when printing with a larger impression cylinder, a large printing pressure can be applied without causing deformation.
If the surface of the substrate material is very smooth and its weight is lighter, a softer rubber material should be used and the pressure required is generally smaller.
If the substrate material is relatively hard and relatively smooth, you should use a relatively soft rubber material, but it should not be too soft, otherwise it will produce deformation and wrinkles, commonly used around 80 Shore hardness of the impression cylinder.
If the substrate material is soft and relatively smooth, an embossing cylinder with a 70 Shore hardness is appropriate.
In order to accurately control the amount of ink transferred to the substrate material, it must be ensured that the substrate material is in close contact with the ink in the cells. So, in the end should choose how much hardness of rubber material is more appropriate? This depends to a large extent on the type of substrate material.
The rougher the substrate material, the greater the elasticity, the greater the hardness of the rubber layer of the impression cylinder. For example, an impression cylinder with a rubber layer hardness of 90 Shore A or more is suitable for printing recycled cardboard. Under the same conditions, when printing with a larger impression cylinder, a large printing pressure can be applied without causing deformation.
If the surface of the substrate material is very smooth and its weight is lighter, a softer rubber material should be used and the pressure required is generally smaller.
If the substrate material is relatively hard and relatively smooth, you should use a relatively soft rubber material, but it should not be too soft, otherwise it will produce deformation and wrinkles, commonly used around 80 Shore hardness of the impression cylinder.
If the substrate material is soft and relatively smooth, an embossing cylinder with a 70 Shore hardness is appropriate.