Abstract: A security film adapted to display a message indicative of tampering is disclosed. A light transmitting sheet has a first layer on one surface, a release layer on a portion of the opposite surface, and a second layer covering the release layer and another portion of the opposite surface. The first layer is a metal and the second layer is a metal or a non-metal. An adhesive layer on the second surface adheres the film to a substrate. Removal of the sheet from the substrate causes the sheet to separate from the second layer under the release layer making a release layer pattern visible on both the sheet and substrate as reverse images. A method disclosed includes metalizing a light transmitting sheet with a metal layer on one side and a release layer and a metal or a non-metal layer on the opposite side.

Abstract: A metallic coated substrate capable of reaching a predetermined surface temperature upon being exposed to microwave energy of a known strength including a base, a metal coating on the base, the coating being formed in a plurality of discrete metal areas having predetermined surface resistivity, the size of the areas being below the arcing size for the surface resistivity, and the resisitivity being such that the predetermined surface temperature will be reached when the substrate is exposed to the microwave energy. Different areas on the base may contain discrete areas of different surface resistivity so that the different areas reach different temperatures. The spacing of the discrete areas may be varied so that the rate of energy emission from those areas differs.

Abstract: Corrosion of the aluminum electrode layer in thin-film capacitors is inhibited or prevented, so that the capacitors can be operated at higher AC voltages. The aluminum is alloyed with copper (or other metal of low specific resistance) from about 0.2% to about 8.0% (by weight), and with about 0.2% to about 3.0% of metal having a higher valence than aluminum, such as chromium, hafnium, manganese, titanium, and zirconium. Because of its low specific resistance and its ability to form precipitate compounds with aluminum, the copper serves as a vehicle to transport the high valence metals to the grain boundary of the aluminum. The presence within the alloy of a metal having a higher valence than aluminum is believed to capture free electrons and so prevent a positive shift in pH, thus inhibiting corrosion.

Abstract: Electroluminescent elements of high light intensity and long useful life, operating at comparatively low energy input, are obtained by directly bonding to a supported web of thin plastic film without intermediate adhesive a layer of resin containing EL phosphor thoroughly and uniformly dispersed therein, and depositing on the surface of said resin a fine layer of a transparent electrode consisting essentially of indium tin oxide. In alternative embodiments the said resin layer is sandwiched between thin deposited layers of alkaline earth metal titanate.

Abstract: A coated plastic film for application to a glass surface in the production of thermally insulating glass pane having light transmitting properties comprising, a release coating on the surface of said plastic film, an acrylic nitrocellulose lacquer applied over said release coating, and a vapor deposited metal coating applied over said lacquer.

Abstract: A laminate, particularly useful for application to resin extrusion strips applied as trim molding to sides and doors of automobile bodies, is formed of a surface metalized polyester resin film bonded to a vinyl resin sheeting by an in-situ formed polyester-isocyanate adhesive.