PRIVACY FILM

• Main Authors: CLARKE, GRAHAM M, HANSEN, BRENT R, HOIUM, TRAVIS B, GRAHAM, PAUL D, SLAMA, DAVID F
• Format: Patent
• Language: English; French
• Published: 26.04.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention pertains to privacy film that can be used with documents. The privacy film has a light transmissive, polymeric base sheet that has opposing first and second surfaces. A plurality of light directing elements protrudes from the first surface of the base sheet. The base sheet can be constructed of a first polymeric material. The light directing elements can be constructed of a second polymeric material. The first and second polymeric material may be the same material. The light directing elements are substantially constant in its cross-section dimension and disposed substantially parallel to each other. L'invention concerne un film de protection qui peut être utilisé avec des documents. Le film de protection se compose d'une feuille de base polymère qui transmet la lumière et qui possède une première et une deuxième surface opposée. Une pluralité d'éléments d'orientation de la lumière dépasse de la première surface de la feuille de base. La feuille de base peut être constituée d'un premier matériau polymère. Les éléments d'orientation de la lumière peuvent être constitués d'un deuxième matériau polymère. Le premier et le deuxième matériau polymère peuvent être constitués du même matériau. Les éléments d'orientation de la lumière sont sensiblement constants dans leur dimension transversale et sont disposés sensiblement parallèlement l'un par rapport à l'autre.