Adhesive stack with a central shear layer

摘要

An adhesive stack comprises a shear layer positioned between two adhesive layers. The shear layer, comprised of a weak adhesive sub-layer positioned between substrate sub-layers, is designed to fail upon application of a deliberate and appropriate shear force and before the failure of the adhesive layers. The adhesive sub-layer defines a width and/or length less than a width and/or length of another layer or sub-layer of the adhesive stack. The adhesive stack aids in securing components within an electronic device to prevent movement of the component when the device is dropped, hit, or bumped. The adhesive stack may occupy minimal space within the device, and reduce the cost of securing the component within the device's interior. The adhesive stack may allow for replacement of the component by an authorized person applying an appropriate and deliberate force. The adhesive stack may aid in identifying components replaced by an unauthorized person.

主权项

1. An adhesive stack comprising:
a first adhesive layer; a second adhesive layer; and a shear layer positioned between, and in contact with, the first and second adhesive layer, wherein the shear layer comprises an adhesive sub-layer positioned between a first substrate sub-layer and a second substrate sub-layer, wherein the adhesive sub-layer of the shear layer is in contact with both the first and the second substrate sub-layers, wherein the first and the second substrate sub-layers comprise polyethylene terephthalate, wherein the first and second substrate sub-layers layers each comprise a first material, wherein the adhesive sub-layer comprises a second material, and wherein the first material is different from the second material.