What Is Non-Adhesive Coating?
A non-adhesive coating is a surface treatment applied to materials like resins, glues, and inks to prevent them from sticking to certain areas. This type of coating is essential for products like gummed tape and cooking utensils, ensuring they function effectively without unwanted sticking.
Applications of Non-Adhesive Coatings
- In the industrial field, non-adhesive coatings are used on molds in resin injection molding and metal casting to prevent products from sticking.
- In household settings, they are applied to cooking utensils like frying pans to prevent food from sticking.
Principle of Non-Adhesive Coating
Non-adhesive coatings work by two main methods:
- Using materials with low surface free energy, like fluoropolymers and silicones, which are less likely to stick to other substances.
- Lowering the contact surface by creating minute surface irregularities.
Types of Non-Adhesive Coatings
There are three main types of materials used in non-adhesive coatings:
- Fluoroplastic Coating: Known for its low intermolecular forces and non-reactivity with other substances. It also offers chemical resistance, heat resistance, and a low coefficient of friction.
- Silicone Coating: Composed of siloxane bonds, offering high stability and durability.
- Glass and Ceramic Coating: Used for antifouling on car bodies to prevent water and dirt adherence.