Abstract: The invention relates to an encapsulated window comprising a monolithic or laminated glass and/or plastic substrate (4; 14) provided with a frame (5; 16) made of a plastic material which is overmoulded around the periphery of the substrate. The frame includes, along at least part of its periphery, an essentially U-shaped groove which grips the border (6) of the substrate. The plastic material consists of a thermoplastic polymer or a blend of thermoplastic polymers having a flexural modulus of at least 1200 MPa. The frame grips the edge of the substrate with sufficient rigidity so that the edge of the substrate need not be coated with an adhesive primer.

Abstract: The invention relates to a laminated glazing panel having at lest two sheets of glass and to a manufacturing process. According to the invention, this glazing panel has sheets of glass have undergone a strengthening treatment and at least two sheets of the glass are separated by a silicone interlayer. The invention also pertains especially to the use as a window of a vessel in which there is a high pressure and/or a high temperature and/or a high moisture content, as well as to the mounting of the said window.

Abstract: The subject of the invention is a glass composition of the silica-soda-lime type, having a UV transmission such that T.sub.UV.ISO <15%, and preferably T.sub.UV.ISO .ltoreq.13%, for a glass thickness of between 2.85 mm and 4.

Abstract: The invention relates to the electric melting technique, in which the melting energy is dissipated in the bath of melted glass as a result of the Joule effect by means of electrodes which dip through the surface of the bath. According to the invention, the electrodes dip into a bath of melted glass which has a height h below 800 mm and a surface S such that the ratio h/S is lower than 0.5 m/m.sup.2. According to another aspect, the exchange surface between the electrodes and the bath is above 0.075 m.sup.2 /m.sup.3 of glass.The invention is used in the manufacture of glass-based products, such as insulating materials based on glass fiber.

Abstract: A machine winds a fibrous mat on itself after compressing it. The winding machine has two bands which each embrace about half the circumference of the roll being formed. The machine also includes a plate intended to keep the mat compressed. This plate and, if appropriate, a device for causing compression of the mat are movable and advance downstream as the fibrous mat is wound. In a variation, the compression device is fixed and the plate is lengthened.

Abstract: In an acoustic building structure corresponding to the mass-spring-mass insulation principle, the two masses of the mass-spring-mass system are each formed of at least one rigid element (1,2) and are separated by at least one panel (4) of mineral wool combined with at least one air gap (5). The acoustic structure is such that the rigid elements (1,2) are trays with a U-shaped cross section and are lined on the inside of the U with at least one mineral wool (3).

Abstract: The invention relates to a process for treating glass substrates, in particular those used as memories for "peripherals" in the field of data processing.According to the invention, the process includes a surface ion-exchange strengthening step and a subsequent substrate surface dealkalization step.

Abstract: The invention relates to a coated glass substrate, covered with at least one thin layer based on silicon nitride or silicon oxynitride. The thin layer contains the elements Si, O, N, C in the following atomic percentages:Si: from 30 to 60%,N: from 10 to 56%,O: from 1 to 40%,C: from 1 to 40%.The invention also relates to the process for obtaining the coated glass substrate using a gas-phase pyrolysis technique, and to its applications.

Abstract: A method and apparatus for extruding a plastic spacer directly on an object, in particular on the periphery of window glazing, such as automobile glazing intended to be glued into the opening of a vehicle. In particular the invention relates to properly producing the connection zone between the end and the beginning of the extruded spacer when it forms a closed loop. According to the invention the beginning of the spacer and the remainder of the loop are extruded, with the exception of the connection zone. The object is then provided with an applied anti-adhesive deposit surface that is continuous with the surface of the object. The path of the extrusion head is diverted in relation to the surface of the object so that the extrusion occurs on the applied deposit surface, proximate to and beyond the beginning of the spacer loop. The extruded spacer is then allowed to harden and the extremities of the spacer are cut and adjusted to properly complete the connection.

Abstract: Abrasive grain with increased projectability in a UP deposition process is provided with a first conductive coating and a second coating comprising a silicon-containing compound.

Abstract: A process and a device for duplicate molding on at least one part of a glazing, placed in a mold, particularly a monolithic or laminated glazing, of glass and/or of transparent plastic, by injection of plastic has at least two stations: a main station for the pressurization of a first mold, the injection of a plastic and the release of the molding pressure of the mold. Additional operations are being performed on a second mold at an auxiliary station. Transfers of the molds from the auxiliary station to the main station and vice versa are provided.

Abstract: An apparatus and methods for manufacturing curved scintillation crystal detector plates uses hot forging of crystal material. Crystal material is brought to a temperature between its plastic temperature and its melting temperature, and it is pressed between a pair of dies having curved pressing surfaces. The heated crystal material may be a freshly-drawn ingot of crystal material, and the method for producing curved plates may include cutting the hot-forged ingot into individual plates.

Abstract: The subject of the invention is a glass-, ceramic- or vitroceramic-based substrate (1) provided on at least part of at least one of its faces with a coating (3) with a photocatalytic property containing at least partially crystalline titanium oxide. It also relates to the applications of such a substrate and to its method of preparation.

Abstract: A deposition target medium is disclosed for use in CVD of a diamond film wherein a hydrocarbon gas and atomic hydrogen are utilized in depositing the diamond film on the deposition target medium, which comprises a substrate having a Young's modulus of less than 50 GPa; and a coating on said substrate, said coating comprising a binder and diamond grit, said binder comprising a glass-forming oxide.

Abstract: An apparatus for depositing synthetic diamond on a surface of a substrate includes a deposition chamber and a cooling block having a surface in the deposition chamber that is cooled by heat exchange. The substrate is supported from the cooling block so that the bottom surface of the substrate is spaced from the cooling block surface by a gap, and a gas is provided in the deposition chamber and in the gap, the gas comprising at least 30 percent hydrogen gas. A plasma deposition system forms in the chamber a plasma containing hydrogen gas and a hydrocarbon gas for depositing synthetic diamond on the top surface of the substrate.

Abstract: Alkali halide crystal is grown from a melt in a novel graphite crucible which has a surface depth region of its inside surface impregnated with glassy carbon to eliminate porosity, so that the melt does not leak through or wet the carbon. Additionally, the graphite may be coated with glassy carbon to provide a smoother surface. Also disclosed is a porous graphite crucible lined with a layer of graphitic pyrolytic carbon to prevent wetting of the surface by the melt and to permit release of the cooled crystal without remelting.