CCK release paper is an abbreviation for clay coated kraft paper. It is manufactured by coating clay coated kraft paper with a silicone release agent. The result is a paper that is tough, dimensionally stable, and has good thermal properties. Here's what you need to know about CCK paper:

Before choosing a CCK release paper, you need to understand the chemistry of the film it is covered with. Depending on the chemical composition, the surface of the release paper can be coated or uncoated. Permeability to air is measured using Gurley Porosity or Density. A higher number indicates lower permeability, but a lower density means a higher release base. A high-porosity Release Paper should withstand higher temperatures without degradation.

The packaging industry is one of the largest markets for release paper. Release base must possess desirable properties, including dimensional stability, free from shrinkage, and air-tightness. The surface of the release base should be smooth and free from bumps and wrinkles. Paper with a high opacity will reduce leakage and increase safety. A dense base also reduces bleedthrough from secondary coatings. In a variety of industries, release paper is a staple for product manufacture.