Paper corner guards are generally not suitable for appliance protection. Home appliances are often heavy and irregularly shaped, requiring stronger and more stable protective materials to ensure protection from damage during transportation, storage and handling. While paper corner guards can be useful on some lightweight, regularly shaped items, they are generally not enough to provide adequate protection for appliances.

For appliance protection, more suitable options may include:

1. Foam corner protectors: Foam corner protectors are a lightweight and impact-resistant material that is usually used for packaging and transporting home appliances. They can be customized to fit the size and shape of your appliance, providing better protection.

2. Foam filling: Using foam filling in the packaging boxes of home appliances can effectively prevent vibration and collision during transportation, thereby protecting the home appliances from damage.

3. Special packaging materials: Some home appliance manufacturers use special packaging materials, such as thick cardboard, foam plastics and customized packaging boxes, to ensure that the products are not damaged during transportation and handling.

4. Professional moving and packaging services: For major home appliances, such as refrigerators, washing machines, etc., it is usually recommended to use professional moving and packaging services. They have the experience and professional equipment to ensure the safe transportation and handling of home appliances.

To sum up, in order to protect home appliances, especially larger and heavy appliances, it is best to use specially designed packaging materials and methods instead of relying on paper corner protectors. This will help ensure that your appliances are not damaged during transportation and storage.