Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Lynn E Faykish

Shih-Lai Lu

Wallace K Bingham

Douglas K Fossum

Wilhelm Kuester

Katharina J Bischof

Luigi Pastore

An article is disclosed having both holographic and retroreflective features. The article includes a holographic layer that is perceptible under normal lighting conditions and substantially imperceptible to the unaided eye under retroreflective lighting conditions, a retroreflective layer perceptible under retroreflective lighting conditions, and means for bonding the two layers together.

Article with holographic and retroreflective features

A security laminate comprising (1) a protective layer having a first and a second surface, (2) a pattern of low adhesion coating bonded to a portion of the second surface of the protective layer, (3) at least one emblem bonded to a portion of the low adhesion coating/protective layer composite, (4) an adhesive bonded to the emblem layer/low adhesion coating/protective layer composite, and (5) a primer is not included between the low adhesion coating and emblem layers; wherein the bond between the emblem and the protective layer and the bond between the adhesive layer and protective layer are the most tenacious bonds, and the bond between the low adhesion coating and the protective layer is the least tenacious, whereby the emblems and adhesive layers are damaged in the pattern of the low adhesion coating during delamination. Also, secured documents comprising such security laminates and a method for securing documents utilizing such security laminates.

Durable, tamper resistant security laminate

A security laminate comprising a protective layer having first and second surfaces, an embossing layer bonded to at least a portion of the second surface of the protective layer, a reflective layer bonded to at least a portion of the embossed layer/protective layer composite, an adhesion enhancing layer bonded to a portion of the reflective layer/embossed layer/protective layer composite, an adhesive bonded to at least a portion of the adhesion enhancing layer/reflective layer/embossed layer/protective layer composite wherein the bond between the reflective layer and the adhesion enhancing layer and the bond between the adhesion enhancing layer and the adhesive are each more tenacious than the bond between the reflective layer and the embossed layer and further wherein the bond between the adhesive and the adhesion enhancing layer is more tenacious than the bond between the adhesive and the reflective layer.

Durable security laminate with hologram

The invention provides a transparent multilayer film comprising a cover layer, a destructible or irreversibly deformable layer, respectively, a pattern of adhesion-regulating material between the cover layer and the damagable layer, and an adhesive layer for bonding with a substrate. The damagable layer has a thickness of at least 10 .mu.m. The following relationship applies to the cohesive strength as well as the adhesion between the layers: a and d&gt;c&gt;b whereby

Transparent multilayer film and its use for protection of data on

A retroreflective security laminate, designed to be applied to the surface of a document over information thereon, providing dual levels of verification. The laminates have primary legends which are viewable under both ordinary diffuse lighting conditions and retroreflective viewing conditions and may also have retro-legends which are viewable only under retroreflective viewing conditions.

Retroreflective security laminates with dual level verification

A retroreflective security laminate, designed to be applied to the surface of a document over information thereon, and having a protective cover sheet comprising an abrasion-resistant outer layer and a support layer which is resistant to deformation under localized pressure. Also methods for making such laminates.

Growing community of inventors

Minneapolis, MN, United States of America

Lynn E Faykish