Adhesive mountable stack of removable layers
An eye protector includes a lens configured to protect the wearer from projectiles, and an optically clear stack attached to the lens. The stack can have one or more removable layers. The eye protector also includes an optically clear dry mount adhesive layer attaching the stack to the lens. The dry mount adhesive may be self-wetting to attach the stack to the lens so that air between the stack and the lens can be removed after the stack is attached and/or adhered to the lens, for example, by applying pressure across the surface of the stack. The refractive indices of the lens, the dry mount adhesive, and each removable layer are matched to within about 0.2.
1. An optically transparent stack for affixing to a clear surface to form a surface protector, the stack comprising:
at least one optically transparent removable layer; and
an optically transparent dry mount adhesive layer applied to a lower surface of the stack for attaching the stack to the clear surface, the dry mount adhesive layer forming a continuous and uninterrupted adhesive surface and comprising a polymethyl methacrylate material that is configured to be self-wetting and to have a refractive index that is matched to within 0.2 of a refractive index of the at least one optically transparent removable layer.
2. The stack of claim 1 , wherein the stack comprises a plurality of removable layers, each of the removable layers attached to at least one other removable layer with an optically transparent stack adhesive layer, each stack adhesive layer having a stack adhesive refractive index, each removable layer having a removable layer refractive index, each removable layer refractive index and each stack adhesive refractive index are matched to within 0.2.
3. The stack of claim 2 , wherein opposed outer portions of each removable layer form a stepped configuration that facilitates gripping of an uppermost removable layer of the stack.
4. The stack of claim 2 , wherein the dry mount adhesive layer provides a peel strength between the stack and the clear surface that is greater than a peel strength between each removable layer of the stack.
5. The stack of claim 4 , wherein the peel strength provided by the dry mount adhesive layer that is twice the peel strength between each removable layer of the stack.
6. The stack of claim 1 , wherein the polymethyl methacrylate material is configured to have a haze level less than 1.0%.
7. The stack of claim 1 , wherein the polymethyl methacrylate material is configured to have a light transmission value greater than 99%.
8. The stack of claim 1 , wherein the dry mount adhesive layer is between 10 and 20 microns thick.
9. A surface protector for use on a clear surface, the surface protector comprising:
a plurality of removable layers arranged in a stack having a lower surface positionable adjacent the clear surface, each of the removable layers being optically transparent and having a removable layer refractive index;
at least one intermediate adhesive layer being optically transparent and being interposed between adjacent ones of the plurality of removable layers, each of the at least one intermediate adhesive layer having a stack adhesive refractive index that is matched to within 0.2 of the removable layer refractive index of each removable layer;
a dry mount adhesive layer being optically transparent and applied to the lower surface of the stack to form a continuous and uninterrupted adhesive surface, the dry mount adhesive layer comprising a polymethyl methacrylate material that is configured to be self-wetting and to have a refractive index that is matched to within 0.2 of the removable layer refractive index of each removable layer and to within 0.2 of the stack adhesive refractive index of each intermediate adhesive layer.
10. The surface protector of claim 9 , wherein opposed outer portions of each removable layer form a stepped configuration that facilitates gripping of an uppermost removable layer of the stack.
11. The surface protector of claim 9 , wherein the dry mount adhesive layer provides a peel strength between the stack and the clear surface that is greater than a peel strength provided by the at least one intermediate adhesive layer.
12. The surface protector of claim 11 , wherein the peel strength provided by the dry mount adhesive layer that is twice the peel strength provided by the at least one intermediate adhesive layer.
13. The surface protector of claim 9 , wherein the polymethyl methacrylate material is configured to have a haze level less than 1.0%.
14. The surface protector of claim 9 , wherein the polymethyl methacrylate material is configured to have a light transmission value greater than 99%.
15. The surface protector of claim 9 , wherein the dry mount adhesive layer is between 10 and 20 microns thick.