Release Liners - Substrates
The end use of the product will determine what characteristics are desirable in the substrate used to support the silicone.
Sheet materials may require high degrees of stiffness to allow easier handling; complicated web paths may require more flexibility. Some end uses demand temperature resistance, others water resistance. Transparency, opacity, thickness and thinness will all have products for which they are desired, or unwanted.
The following diagram gives an idea of some of the characteristics which a customer may require in a release liner.