Silicone-Adhesive Interactions In Release Liner Applications
This article discusses aspects of silicone anchorage on paper substrates and examines a case study based on a splicing tape application in which adhesive affected the anchorage of the silicone
Several technical parameters must be met in order to achieve these uses. A basic requirement for silicone-coated release liners is that the release liner surface must be coated uniformly with a continuous layer of silicone and that the silicone layer is well cured. This avoids any interaction that may occur between unreacted silicone species and the adhesive, and it minimizes the possibility of transfer of silicone to the adhesive surface. The level of release also must be adjusted properly, as defined by the customer's end-use requirements, to give consistent release values over time. Finally, the silicone coating must be well anchored to the liner substrate. This is particularly important if the liner is not used immediately, but rather is stored for a period of time prior to its use. Prolonged storage of release liners can lead to a degradation of the anchorage of the silicone. This is particularly true with silicones on film substrates, but can occur on paper as well.