Should I choose PET as the panel or PC as the panel for my capacitive membrane switch of Coffee maker controls?

06 Nov, 2023

By hqt

Have you ever sipped a cup of coffee and wondered about the intricacies of the machine that brewed it? It’s fascinating, isn’t it? Well, for many coffee enthusiasts, the brewing mechanism matters just as much as the beans. And, at the heart of this mechanism, lies the capacitive membrane switch – the panel that lets you control the coffee-making process. Now, imagine you had to choose between two popular materials for this switch: PET and PC. Which one would you choose? Let’s dive into this debate!

Why the choice matters? 

Choosing the right material for your coffee maker’s control panel isn’t just about aesthetics. It affects the durability, functionality, and efficiency of the device. Making the wrong choice might lead to premature wear and tear or poor performance.

A brief on Capacitive Membrane Switches 

Before we plunge into the comparison, let’s understand what a capacitive membrane switch is. It’s a touch-sensitive device, usually used in appliances like your coffee maker, to initiate various functions. These switches rely on the human body’s capacitance as an input, and thus the material used for the panel is crucial.

PET Panels: An Overview 

PET, or Polyethylene Terephthalate, is a type of plastic commonly used in various applications. But how does it fare for capacitive membrane switches?

Characteristics of PET 

PET is flexible, lightweight, and has excellent dielectric properties. It’s also resistant to most chemicals and offers good thermal stability.

Advantages of using PET

  • Flexibility: It can be molded into various shapes and sizes, making it perfect for intricate designs.
  • Cost-effective: PET is generally less expensive than PC.
  • Transparency: PET panels allow for better backlit displays.

Limitations of PET

  • It might degrade with prolonged UV exposure.
  • Has a lower temperature threshold compared to PC.

PC Panels: A Deep Dive 

Now, let’s turn our attention to PC, or Polycarbonate.

What is PC? 

PC is a tough and durable type of plastic known for its impressive impact resistance and clarity.

Benefits of PC Panels

  • Durability: PC can handle rough usage better than PET.
  • Temperature resistance: It can withstand higher temperatures.
  • Optical clarity: Offers a clear view of the display.

Drawbacks of PC Panels

  • Might be more expensive than PET.
  • Less flexible compared to PET.

Comparison: PET vs PC for Coffee Maker Controls So, PET or PC? Here’s a comparative analysis to help you decide.

Durability and Lifespan PC generally outlasts PET in terms of durability, especially in high-usage scenarios.

Flexibility and Design Options PET offers better flexibility, allowing for more innovative designs.

Cost-Effectiveness If you’re on a budget, PET might be the better choice, but remember, durability could affect long-term costs.

Environmental Impact Both materials are recyclable, but PET is often considered more environmentally friendly.

Temperature Resistance For hot environments or appliances that heat up significantly, PC would be more appropriate.


Choosing between PET and PC for your coffee maker’s capacitive membrane switch boils down to your specific needs. If you want flexibility and cost-effectiveness, PET might be the way to go. But if durability and temperature resistance are your primary concerns, PC could be the better choice. In the end, it’s all about finding the right balance for your coffee brewing experience.


  1. Is one material more eco-friendly than the other?
    • PET is often considered more environmentally friendly, but both materials are recyclable.
  2. Can I use both materials in a hybrid design?
    • Yes, many manufacturers offer hybrid designs that utilize the strengths of both materials.
  3. Are there significant cost differences between PET and PC?
    • Generally, PET is less expensive than PC, but the cost can vary based on design specifics.
  4. Which material offers better touch sensitivity?
    • Both materials offer excellent touch sensitivity for capacitive switches. The difference lies in other properties like flexibility and durability.
  5. Can I customize the design irrespective of the material?

While both materials offer design customization, PET might offer slightly more flexibility in intricate designs.


Write to Us And We Would Be Happy to Advise You.

    l have read and understood the privacy policy

    Do you have any questions, or would you like to speak directly with a representative?