Method of preparing retroreflective sheeting
Patent 4075049 Issued on February 21, 1978. Estimated Expiration Date: 
February 21, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 21, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3065559 3190178 3836364 Retro-reflective materials Migration imaging system Patent #: 3975195 InventorApplicationNo. 05/719647 filed on 09/01/1976US Classes:156/220, Subsequent to lamination156/234, Of portion only of lamina from carrier156/235, Plural transferring operations and/or with additional laminating156/240, Transfer of printing or design156/298, Embedding of laminae within face of additional laminae359/541, With single transparent coating between spheres and atmosphere40/615, Multiple layer40/616, Embossed, molded, rolled or stamped427/152, Coating opposite sides or forming plural or nonuniform coats427/163.4, Retroreflector (e.g., light reflecting small spherical beads, etc.)427/199, Silicon compound, metal, or metallic compound containing particles applied427/204, Silicon compound containing particles (e.g., sand, etc.)427/278, Roller treating member428/40.2, Capsule or particulate matter containing (e.g., sphere, flake, microballon, etc.)428/914TRANSFER OR DECALCOMANIAExaminersPrimary: Van Horn, Charles E.Assistant: Bokan, Thomas Attorney, Agent or FirmAbstractRetroreflective sheeting having improved resistance to delamination is prepared by imparting a grid pattern to a monolayer of glass spheres having a light reflecting layer thereon, applying a sphere binder layer over the grid pattern imposed on the monolayer of glass spheres so as to adhere to the reflective layer on the monolayer of glass spheres, and pressure consolidating the resulting composite against a clear, protective overlay film, wherein the overlay film bonds to the sphere binder layer in the grooves formed by the grid pattern.Field of SearchOf portion only of lamina from carrierPlural transferring operations and/or with additional laminating Transfer of printing or design To base coated with adhesive With stripping of adhered lamina With cutting of one lamina only while adhered And assembly with different lamina Embedding of laminae within face of additional laminae Inserting lamina into preformed plastic body | |
