Which Is Better for PCB Lamination: Press Pads or Kraft Paper?

Which Is Better for PCB Lamination: Press Pads or Kraft Paper?

In the PCB industry, both kraft paper and press pads are used during the lamination process to protect PCBs from damage or deformation. Here is a comparison of their characteristics and suitable applications:

Kraft Paper

Characteristics: Kraft paper is relatively thin, flexible, and wear-resistant, providing basic isolation and protection.

Advantages: Its thinness helps reduce height differences during the lamination process, alleviating stress concentrations.

Applications: Ideal for situations where the PCB surface is uneven or has significant height variations. It helps achieve a uniform lamination effect.

Press Pads

Characteristics: Press pads are typically thicker and provide better cushioning and protection. They are effective at absorbing impact forces during lamination.

Advantages: Excellent cushioning performance reduces the impact on PCBs during lamination, minimizing the risk of damage.

Applications: Suitable for high-demand lamination processes where greater protection is needed to reduce deformation and damage to PCBs.

Choosing Between Kraft Paper and Press Pads

The choice between kraft paper and press pads depends on the specific requirements of the PCB and the characteristics of the lamination process:

• Kraft Paper: Best for balancing height differences when the PCB surface is uneven or has significant variations.
• Press Pads: Recommended for scenarios requiring higher protection to reduce impact forces and protect the PCB from damage.

By carefully evaluating the specific needs of your application, you can select the appropriate material to ensure effective protection and a smooth lamination process.