Methods for protecting portable electronic devices

A method for protecting a display screen of a portable electronic device, comprising:

• exposing a dry adhesive on a first surface of a polymer layer;
• aligning an edge of the polymer layer with an edge of the display screen of the portable electronic device with the dry adhesive facing the display screen, a protective liner on a second surface of the polymer layer facing away from the display screen, an application liner on an opposite surface of the protective liner from the polymer film, with an entire outer periphery of the application liner being located laterally beyond an outer periphery of the display screen;
• securing the dry adhesive on the first surface of the edge of the polymer layer to the edge of the display screen;
• applying a pressure front to the polymer layer through the application liner and the protective liner, the pressure front extending across a width of the polymer layer;
• moving the pressure front over a length of the polymer layer through the application liner and the protective liner, from the edge of the polymer layer to an opposite edge of the polymer layer to further secure the dry adhesive and the first surface of the polymer layer to the display screen with the polymer layer covering the display screen;
• and
• removing the application liner and the protective liner from the polymer layer, including pulling a tab away from the display screen, the polymer layer remaining secured to the display screen.

A method for protecting a display screen of a portable electronic device, comprising:

• exposing a dry adhesive on a first surface of a polymer layer;
• aligning an edge of the polymer layer with an edge of the display screen of the portable electronic device with the dry adhesive facing the display screen, an application liner over a second surface of the polymer layer facing away from the display screen, with an entire outer periphery of the application liner located laterally outside of an entire outer periphery of the display screen;
• securing the dry adhesive on the first surface of the edge of the polymer layer to the edge of the display screen;
• applying a substantially linear pressure front to the polymer layer through the application liner, the pressure front extending across a width of the polymer layer;
• substantially continuously moving the substantially linear pressure front in a direction substantially perpendicular to the substantially linear pressure front over a length of the polymer layer through the application liner, from the edge of the polymer layer to an opposite edge of the polymer layer to further secure the dry adhesive and the first surface of the polymer layer to the display screen with the polymer layer covering the display screen;
• and
• removing the application liner from the polymer layer, the polymer layer remaining secured to the display screen.