What is corona treatment?

Corona treatment is a widely used method in the manufacturing industry that helps to improve the adhesion properties of various materials such as plastics, metals, and papers. This process works by exposing the surface of the material to a high voltage, which creates a corona discharge that ionizes the air and creates reactive molecules such as ozone and nitrogen oxides.

These reactive molecules, in turn, react with the material surface and create polar groups that enhance the wettability and adhesion properties of the material. This process can be used to improve the printing, coating, and adhesion properties of various materials and is commonly used in industries such as packaging, automotive, and medical devices.

Corona treatment is a safe and reliable method that does not damage the material or change its physical properties. It is a cost-effective solution that provides long-lasting results and can be easily integrated into the manufacturing process. Moreover, corona treatment helps to reduce waste by improving the efficiency of various manufacturing processes.

Why do corona treatment for PP corrugated sheet?

PP corrugated sheets have become increasingly popular in various industries due to their lightweight, durability, and versatility. However, one particular challenge with PP corrugated sheets is that they have low surface energy, which makes it difficult for inks, adhesives, and coatings to stick to their surface. To overcome this challenge, corona treatment is often used as a surface preparation method to enhance the surface energy of PP corrugated sheets. 

How do I know if my PP corrugated sheet is printable?

PP corrugated sheet is a popular material used for creating signs, packaging, and displays. One of the most important things to consider when using this material is its printability. Not all PP corrugated sheets are printable, but there are a few ways to determine whether yours is:

1. Check the manufacturer's specifications: First and foremost, check with the manufacturer to verify if the PP corrugated sheet is printable or not. Most manufacturers will provide this information on their product datasheets or packaging.

2. Conduct a printability test: If you are unsure about the printability of your PP corrugated sheet, you can conduct a printability test. This involves printing a small section of the material with your desired ink or printing process and evaluating the quality of the print. If the print is clear and vibrant, then the material is printable.

3. Look for special coatings: Some manufacturers may add special coatings to their PP corrugated sheets to make them more printable. These coatings can include primers or topcoats that improve ink adhesion and print quality.