Anti-fouling silicone composite sheet and method for performing prevention of graffiti using same
An anti-fouling silicone composite sheet including: a substrate layer containing a fluororesin; and a silicone adhesive layer stacked on one surface of the substrate layer, having a hardness of 5 or less as measured with an Asker C hardness tester, and having an adhesive force with respect to a mortar test piece of 5 N/25 mm or more, wherein the substrate layer has a surface on which the silicone adhesive layer is stacked and the other surface is an anti-fouling surface. By the above configuration, the present invention provides an anti-fouling silicone composite sheet capable of exhibiting anti-fouling performance, washability, easiness of washing, and wear resistance stably for a long period, easily attachable to an adherend, and conformable even to cracking and shifting on the application surface; and a method for performing a prevention of graffiti by using the anti-fouling silicone composite sheet.
1 . An anti-fouling silicone composite sheet comprising:
a substrate layer containing a fluororesin; and a silicone adhesive layer stacked on one surface of the substrate layer, having a hardness of 5 or less as measured with an Asker C hardness tester, and having an adhesive force with respect to a mortar test piece of 5 N/25 mm or more, wherein
the substrate layer has a surface on which the silicone adhesive layer is stacked and the other surface is an anti-fouling surface,
the fluororesin is as the substrate layer itself,
at least the surface opposite to the anti-fouling surface is subjected to anchoring property improving treatment in surfaces of the fluororesin constituting the substrate layer.
2 . The anti-fouling silicone composite sheet according to claim 1 , further comprising a reinforcing material in the substrate layer.
3 . The anti-fouling silicone composite sheet according to claim 2 , wherein a reinforcing material layer is further stacked between the substrate layer and the silicone adhesive layer.
4 . The anti-fouling silicone composite sheet according to claim 3 , wherein the substrate layer and the reinforcing material layer are stacked via an adhesion layer having a UV resistance property.
5 . The anti-fouling silicone composite sheet according to claim 3 , wherein the reinforcing material layer comprises a PET film.
6 . The anti-fouling silicone composite sheet according to claim 1 , wherein a reinforcing material layer is further stacked between the substrate layer and the silicone adhesive layer.
7 . The anti-fouling silicone composite sheet according to claim 6 , wherein the substrate layer and the reinforcing material layer are stacked via an adhesion layer having a UV resistance property.
8 . The anti-fouling silicone composite sheet according to claim 7 , wherein the reinforcing material layer comprises a PET film.
9 . The anti-fouling silicone composite sheet according to claim 6 , wherein the reinforcing material layer comprises a PET film.
10 . The anti-fouling silicone composite sheet according to claim 1 , wherein one or more of the respective layers have an anti-light-reflective effect.
11 . The anti-fouling silicone composite sheet according to claim 1 , wherein a thickness of the substrate layer is 0.05 to 0.3 mm, a thickness of the adhesive layer is 0.5 to 3 mm, and a total thickness of the anti-fouling silicone composite sheet is 0.55 to 3.3 mm.
12 . A method for performing a prevention of graffiti, comprising: attaching the silicone adhesive layer of the anti-fouling silicone composite sheet according to claim 1 to a certain adherend; and exposing the anti-fouling surface of the substrate layer constituted of the fluororesin to prevent graffiti on the adherend.