Anti-theft label construction

A security label comprising:

• a plastic sheet label having a window;
• a backing sheet having a release layer thereon;
• adhesive layer securing said plastic sheet to said backing sheet;
• a varnish layer coextensive with said plastic sheet label;
• and
• graphics applied to said label and extending across said label both in the areas of said plastic sheet label enclosing the window and in the window area.

A tamper proof label comprising:

• a support segment;
• a in-situ formed fragile layer attached to said support segment, and easily separable therefrom;
• an aggressive adhesive layer affixed to the back of the label, extending across both the support layer and the fragile layer, such that once the label is applied to a product, removal of the label will result in said fragile layer remaining affixed to said product, and in which the top of said fragile layer and said support layer consists of a curable coating selected from the group of materials consisting of varnish and epoxy;
• and
• said aggressive adhesive layer being a gradually curing adhesive, allowing the tamper proof label to be repositioned or removed from a product if such removal occurs within a short period of time after the tamper proof label is affixed to the product.

A tamper proof label comprising:

• a support segment;
• a in-situ formed fragile layer attached to said support segment, and easily separable therefrom;
• an aggressive adhesive layer affixed to the back of the label, extending across both the support layer and the fragile layer, such that once the label is applied to a product, removal of the label will result in said fragile layer remaining affixed to said product, and in which the top of said fragile layer and said support layer consists of a curable coating selected from the group of materials consisting of varnish and epoxy;
• and
• an authentication layer extending across both the support layer and the fragile layer and providing a predetermined indicia of authentication of the label.

A tamper proof label comprising:

• a support segment;
• a in-situ formed fragile layer attached to said support segment, and easily separable therefrom;
• an aggressive adhesive layer affixed to the back of the label, extending across both the support layer and the fragile layer, such that once the label is applied to a product, removal of the label will result in said fragile layer remaining affixed to said product, and in which the top of said fragile layer and said support layer consists of a curable coating selected from the group of materials consisting of varnish and epoxy;
• and
• a destrux layer extending beneath both the support layer and the fragile layer, such that said destrux layer is variably released creating a tearing pattern when said support layer and said fragile layer are separated.