Abstract:
A masking material and a method for applying the masking material to preselected surfaces of a component to protect the surfaces to which the masking material is applied from exposure to a vapor phase of aluminum gas while a protective environmental coating is applied to other surfaces of the component. The component, such as found in the hot section of a gas turbine engine, typically has intricate internal passageways. A ceramic material is applied as a mask over preselected surfaces while leaving remaining surfaces of a component exposed. The component typically is a superalloy component, and the exposed surfaces are to be coated with an environmental protective coating. The surfaces are preselected on the basis of whether coating is desired on the surface. The ceramic material forms a continuous, crack-free mask on these preselected surfaces without obstructing the internal passageways. The ceramic material which forms a mask is stable at the elevated temperatures of environmental coating application. The ceramic mask material must be continuous and substantially crack-free to prevent the penetration of the aggressive gas phase of the environmental coating material onto the surface of the component where it would otherwise undesirably be deposited. The ceramic material does not react with either the surface of the superalloy component or the gaseous vapors of the coating composition. At the conclusion of the coating operation, the ceramic coating applied as a mask can be easily and completely removed from the surface of the substrate by simple mechanical means, which surface is free of any coating from the coating operation.
Abstract:
The use of aqueous, physically curable, pseudoplastic or thixotropic, polyurethane-based coating materials as adhesion primers for coatings, and a process for coating uncoated plastics surfaces and old coatings by applying at least one coating material to the uncoated plastics surfaces or the old coatings and curing the resulting coating film(s), which comprises applying an aqueous, physically curable, pseudoplastic or thixotropic, polyurethane-based adhesion primer to the uncoated plastics surfaces or the old coatings and overcoating it with at least one further coating material.
Abstract:
A printing-plating process on a plastic surface is disclosed, wherein a acid- and alkaline-resist ink is printed on the surface of plastic to be processed prior to the procedure of plating, such that the printed patterns pertain the property of worn-proof and high adherence.
Abstract:
Novel aqueous dispersion comprising at least one polymer containing on average (i) at least one primary and/or secondary carbamate group, (ii) at least one functional group having at least one bond which may be activated with actinic radiation, and (iii) at least one dispersive ionic functional group; process for preparing it and its use for preparing coating materials, adhesives and sealing compounds which are curable thermally and with actinic radiation, and also novel coating materials, adhesives and sealing compounds consisting of or comprising the novel aqueous dispersion.
Abstract:
A masking material (28) comprising an elongate strip (8, 30) at least partially coated with a layer of a pressure-sensitive adhesive (4, 22), the strip having a curved surface which is convex when the strip is viewed in cross-section and is positioned such that when the strip is adhered to a substrate by the layer of pressure-sensitive adhesive a portion of the curved surface overhangs the substrate, characterized in that the masking material comprises a removable edge portion (10, 32) comprising said portion of the curved surface detachably secured to a remainder of the strip which may be removed to expose a second curved surface on the remainder of the strip which is convex when viewed in cross-section and which is positioned to overhang the substrate, said removable portion (10, 32) and remainder of the strip (8, 30) having different dimensions.
Abstract:
A multilayer barrier coating of alternating layers of an organic material and a negatively charged inorganic material. The barrier coating may be a barrier to oxygen, moisture, flavor and/or aroma. The organic material is deposited on a substrate from an aqueous solution, followed by rinsing and then drying the adsorbed layer of organic material. The negatively charged inorganic material is then deposited over the organic material from an aqueous solution, followed by rinsing and then drying the adsorbed layer of inorganic material.
Abstract:
A continuous and flexible method and apparatus is provided for applying one or more coating materials to internal and/or external portions of a fiber batt to provide edge and surface coating layers on those surfaces of the fiber batt that will be exposed during subsequent use. The invention provides for the coating to be applied selectively all exposed surfaces of a fiber batt and provided internally within the fiber batt for later splitting into opposing edges, thereby improving both the manufacturing process and the consistency and flexibility of the resulting product by reducing or eliminating the need for subsequent manual coating of unfinished edge surfaces.
Abstract:
A carbon deposit inhibiting thermal barrier coating for an internal element or component in a gas turbine engine. Such coating includes a layer of thermal barrier material coated onto the surface of an engine component that will be exposed to the flow of burning engine gases. Such coating further includes a layer of carbon deposit inhibiting material coated on top of the layer of thermal barrier material.
Abstract:
The specification discloses a mechanical deposition process for depositing a metal powder on a metal substrate to form a sacrificial coating therefor, wherein the metal powder is produced from a molecular alloy of zinc and aluminum, for instance by the atomization of a molten alloy of zinc and aluminum. The mechanical deposition process described herein is carried out in the presence of a ductile metal more noble than zinc, an activating anion containing a fluoride moiety, and either a fluoride-engendering acidic compound or a weak organic acid.
Abstract:
A label having sunken letters and/or designs and its manufacturing method are disclosed. The label according to the present invention comprises a sunken solidified layer for forming non-protruding letters and/or designs therein at bottom surface of the protrusion label; and a solidified sheet for forming a ground of the label in such a manner that the sunken solidified layer is formed therein. The label has a long life, easily expresses background colors, letters and/or designs of various types, shows beautiful appearance as it does not have the protrusion, has wide application, and can be produced on a large scale as being easy in the manufacturing process and having a good economical efficiency.