Release coatings for PET film are specialized coatings applied to the surface of PET (polyethylene terephthalate) films to provide non-stick properties, enabling easy separation from adhesives or other materials. These coatings are widely used in industries such as packaging, electronics, and medical products. Below are the key types and characteristics of release coatings for PET films based on the search results:

1. Waterborne Polyurethane Release Coatings

• Example: The HQ2010 coating is a polyurethane-based liquid designed for PET film packaging. It offers environmental benefits, bending resistance, and can be applied via equipment coating. Available in transparent or light yellow, it is suitable for applications requiring matte finishes and eco-friendly solutions.

• Properties:

  • Material: Polyurethane (PU)

  • Application: Plastic and rubber coatings, PET film packaging

  • Features: Matte finish, adjustable color, and high durability.

2. Silicone-Based Release Coatings

• Properties:

  • Material: Silicone

  • Thickness: 12–125 µm

  • Applications: Electronic packaging, adhesive tapes, thermal insulation films.

  • Advantages: High cleanliness, low transfer residue, and compatibility with industrial processes.

3. Key Considerations for Selection

• Release Force: Adjustable based on needs (e.g., light release for labels vs. stronger release for heavy-duty adhesives).

• Environmental Compliance: Waterborne coatings like HQ2010 reduce VOC emissions compared to solvent-based alternatives.

• Customization: Available in various thicknesses, widths, and colors to meet specific industrial requirements.

4. Industrial Applications

• Packaging: Used in protective films and food packaging due to non-reactive properties.

• Electronics: Critical for manufacturing components like MLCC (multilayer ceramic capacitors) and display film.

• Medical: Adhesive tapes and transdermal patches rely on controlled release coatings for safe application.