The automotive industry relies heavily on Release Liners during both the production process of the vehicles themselves and aftermarket accessories as well as replacement parts. When a vehicle is in motion, there is a good bit of vibration so the adhesives that are used to attach some integral parts are made to last motion, wind, cold and extreme heat. The Release Liners that are utilized for automotive parts have to be just as stable and perform just as well in the release when the application occurs.
A common Automotive Release Liner configuration is the poly coated 1 or 2 sided Release Liners. If the Release Liner calls for a single sided Release Liner, there is a single layer of silicone, then a poly layer, either a paper or film layer, and another poly layer.
For the two sided poly coated Release Liner applications there is a second layer of silicone on the bottom side as well as the top. So the two sided poly coated Release Liner configuration is made up of a layer of silicone, then a poly layer, either a paper or film layer, another poly layer, and then a second layer of silicone.