摘要:
Barrier film with a high colorless transparency comprising a flexible plastic substrate. A barrier layer is formed on the surface and has a thickness ranging from approximately 50 to 100 Angstroms and is formed of a material selected from the group of aluminum oxide, tin oxide and yttrium oxide. An additional barrier layer formed of silicon dioxide may also be formed on the barrier layer.
摘要:
A laser imageable tuned optical cavity thin film for use with a laser producing laser radiation at a laser wavelength comprising a flexible sheet of plastic having first and second surfaces serving as a film substrate. A thin film stack is disposed on the first surface of the film substrate and comprises a first vacuum-deposited metal layer carried by the first surface. It is also comprised of a dielectric layer deposited on the first metal layer. A second semi-opaque metal layer is vacuum deposited onto the dielectric layer. The thin film stack is tuned to provide maximum absorption at the laser wavelength.
摘要:
A viewing device for use by an observer to ascertain the authenticity of an instrument of value having an image formed from an optically variable device. The viewing device includes a frame structure which permits viewing of the image in a fixed spatial orientation and a reflector carried by the frame structure for permitting the observer to see simultaneously the image in first and second colors without movement of the observer, the viewing device or the image.
摘要:
A barrier film comprising a flexible substantially of transparent substrate having first and second surfaces. A substantially colorless barrier coating is formed on at least one of said surfaces of a graphite material having a thickness ranging from 50 to 350 .ANG..
摘要:
A polymeric sheet comprising a layer of polymeric material having a first and second parallel surfaces. A plurality of oriented multilayer interference thin film flakes are disposed in the layer of polymeric material. The flakes have first and second parallel surfaces and a width and a thickness and have an aspect ratio of at least 2:1 for the width with respect to the thickness.
摘要:
Method for providing a patterned thin film on a flexible web-like substrate having at least one surface. A patterned release coating which carries the desired pattern is deposited on the surface and has openings therein through which the surface of the substrate is exposed. A thin film is deposited over the patterned release coat and onto the portions of the surface exposed through the openings. The patterned release coating is then removed and the thin film portions carried thereby to provide a patterned thin film on the substrate.
摘要:
Articles and methods for forming optically variable thin film flakes and replicated coatings having preselected optical properties. The articles generally comprise a flexible web of material and an optically variable thin film coating formed on one surface of the web. The optically variable coating is separated from the web to form optically variable thin film flakes. The flakes are disposed in ink and paint vehicles to provide optically variable inks, paints and the like.
摘要:
Method for providing a patterned thin film on a flexible web-like substrate having at least one surface. A patterned release coating which carries the desired pattern is deposited on the surface and has openings therein through which the surface of the substrate is exposed. A thin film is deposited over the patterned release coat and onto the portions of the surface exposed through the openings. The patterned release coating is then removed mechanically along with the thin film portions carried thereby to provide a patterned thin film on the substrate. The mechanical removal may be accomplished by advancing the coated substrate through a solvent while brushing the substrate, subjecting the substrate to high velocity air, or contacting the substrate with the adhesive layer of a web.
摘要:
Pre-imaged high resolution transfer foil comprising a carrier having a surface. A releasable hardcoat is disposed on the surface. A vacuum coating is deposited on the hardcoat and an image formed in the vacuum coating.
摘要:
Solar insulating window film comprising a sheet of substantially transparent flexible polymer thin film plastic material having first and second surfaces. First, second and third layers are adherent to the first surface of the film. The second layer is formed of copper. The first layer is formed of a material which possesses substantially the same nobility as copper or is inert to copper. The first layer counting from the first surface is formed of a material selected from nickel and palladium and oxides and sulfides thereof. The third layer counting from the first surface is formed of a material selected from nickel, palladium and chromium and oxides and sulfides thereof.