Abstract: Method of restricting a coating to a first area having an adjacent second area which is to be covered by a mask before the coating is applied, including the steps of separating the areas with a barrier strip of masking paper, applying a masking composition to the second area pressing the paper against the composition to produce a guarding edge between the first and second areas, and applying coating material to the first area, the masking composition inhibiting dust on the second area from marring the coating, and protecting the second area from coating overspray. Also disclosed is a masking system including the barrier strip of masking paper pressed against the film of the masking composition applied to the painted portion of an automobile. The masking composition is easily removable by a water wash after coating of the unmasked area of the automobile.

Abstract: This invention relates to methods and apparatus for marking letter mail or mail pieces to provide a fast and convenient way of determining zip code breaks in a stack of letter mail. The mail pieces have marks printed on the edges thereof indicative of the continuity of the same zip codes thereon. The marks are visible when the mail pieces are stacked. Adjacent envelopes with the same zip codes will have an edge mark at the same location, but upon the zip code changing, the next envelope will have a mark placed at a different location. Numbers in sequence can be printed on each of the letters so that a mail clerk can inspect the last letter within a zip code group to determine if there is a sufficient number of mail pieces within that zip code set to allow a postal discount.In an alternative embodiment, the markings on the side of the mail pieces are printed in a pattern so as to form numbers when a stack is viewed from the side. In addition to forming numbers, a pattern line can extend between the numbers.

Abstract: A xeroprinting master is formed by depositing a corona charge injection modifying material on a master substrate which includes a charge transport layer. The material can block the injection of charge that would otherwise inject into the charge transport layer or it can inject charge that would otherwise remain on the surface of the master. Preferably, the deposit is made by a conventional printer such as an ink jet, impact or thermal printer and the resulting deposit is not fused before use in xeroprinting.

Abstract: For conveying and for dispensing of degassed work liquid(s), an apparatus and a method for precision conveying and/or ratioing and/or mixing and/or dispensing of work liquids are presented using a pump of a positive displacement, high precision, piston/cylinder constant flush type with piston smaller than the chamber. The piston is programmably advanced along a stroke with tiny repeatable adjustable steps. Infinitely adjustable precision ratioing and/or programmable mixing of degassed materials may be provided downstream of the pump outlets when degassed liquids are presented to the inlets of two such pumps. The mixing occurs in a mixing chamber, the output of which is then used. The vacuum degassed work liquids may be dispensed in a system which features the creation and maintenance of a positive absolute pressure on the work liquids throughout, from the point of exiting a first degassing chamber to an end use at a dispensing outlet.

Abstract: A method and system are provided for dispensing only that amount of coating material which is required for coating a series of one or more articles to be coated by the coating material. The method and system include the step of, and apparatus for, feeding that amount of coating material to an intermediate container. The intermediate container receives the coating material from a color changer. The connection between color changer and intermediate container is so designed that no electrical current flow exists between these two components, even when using electrically conducting coating material. The coating material is electrostatically charged at an atomizer downstream from the intermediate container during a spray operation.

Abstract: A thermographic relief printing method is shown for printing a substrate at a printing station. The substrate is sprinkled with a thermographic powder at successive stations with each application station being provided with an applicator for applying a powder a predetermined grain size. The grain sizes are selected to achieve the maximum packing density and the powders are formed with substantially microspheric form of a specified diameter. The diameter of the powder grains at the first application station is greater than the diameter of the powder grains at the next successive application station. The substrate is passed to an oven in which the powder is fused to the printed areas of the substrate.

Abstract: A method and apparatus are disclosed for producing amorphic or ultra fine-grained, diamond-like material on a substrate. Uniform, high quality dehydrogenated diamond-like material is produced when a hardened target material is used and/or when a laser beam strikes the target at non-perpendicular angles of incidence. Also, selective placement of particles upon a substrate as well as simultaneous cleaning of the substrate is achieved by a secondary electrode placed within the laser beam path of travel between a first electrode and the substrate.

Abstract: An apparatus for impregnating the surface of a web with a liquid in the form of a pattern, comprising a vacuum chamber having a suction wall with one or more openings therein; means for pulling and controlling a vacuum on said vacuum chamber; an impregnating chamber adapted to hold the liquid impregnant, said chamber having an exit wall with one or more openings therein, the exit wall being a substantially copolanar extension of the suction wall of the vacuum chamber; a pattern belt having an inner surface and an outer surface and perforations in the configuration of the desired pattern, said belt being mounted over the outside of said vacuum and impregnating chambers and being substantially unperforated except in the area of said pattern; means for moving the pattern belt past first the suction wall of the vacuum chamber and then the exit wall of the impregnating chamber, with the inner surface of the belt being in sealing engagement with the outside surfaces of both said walls; means for pressing the fibrou

Abstract: A method of making a composite of a unidirectional fibrous web in a polymer matrix composition by nonuniformly feeding a polymer composition into contact with a unidirectional fibrous web into a gap between two adjacent compression surfaces with at least one of the surfaces having a pattern. This results in the polymer becoming nonuniformly distributed into thick areas and thin areas as a matrix for the fibrous web.

Abstract: A method and apparatus for applying a liquid emulsion to a screen. The apparatus includes a rotatable trough holding a liquid emulsion, which is mounted to allow the trough to rotate and coat the screen with the emulsion as the screen is moved over the trough.

Abstract: A method of making an improved intraocular lens for implanting in the eye by coating a glass or polymeric lens substrate with a fluorocarbon polymer to produce a rigid, low-energy surface that will significantly reduce adhesion and damage to corneal endothelial tissues upon implantation. The preferred lens material is produced by exposing the lens substrate to a gas plasma of a fluorocarbon monomer.

Abstract: A method of forming a hard coat on a polyolefin base, a composite laminate or a formed article is disclosed, which comprises coating the surface of the polyolefin base with an ultraviolet-curable resin composition comprising (a) a polymer containing at least 80% by weight of methyl methacrylate and/or a modified polymer containing at least 80% by weight of methyl methacrylate and having introduced into the side chain thereof a (meth)acryloyl group, (b) a polyfunctional acrylate containing at least 50% by weight of dipentaerythritol hexaacrylate, the weight ratio of components (a) to (b) being from 1 to 10, and (c) a photopolymerization initiator, drying the coating to form an ultraviolet-curable resin layer, and curing the ultraviolet-curable resin layer by irradiation with ultraviolet light.

Abstract: The invention relates to the impregnation of clothing, specifically Battle ress Uniforms (BDUs) used by the U.S. Military, with amylopectin fabric wrinkle inhibitor and permethrin insect/arthropod repellent in combination. In one disclosed embodiment of the invention, BDUs are loaded into a field laundry, are rinsed with clear water at 120 degrees Fahrenheit, and amylopectin is applied at a particular concentration. The BDUs preferably are then steam pressed. Permethrin at a predetermined concentration is then applied preferably by the "Individual Dynamic Absorption Application" (IDAA) procedure. The retention of permethrin by clothing treated with amylopectin unexpectedly reveals a substantially higher retention level than clothing without treatment by amylopectin after multiple laundry cycles, providing thereby a dramatic improvement in the insect/arthropod repelling action of the clothing over time.

Abstract: A method and apparatus for masking a part during a multi-step process including a blasting process using abrasive media for etching or cleaning a part. In each step of the multi-step process, the workpiece and mask are aligned together by pins extending from a supporting surface of the apparatus. The pins have a lower surface configured to hold the workpiece and an upper part or portion of a triangular cross section to provide line contact with the walls of apertures in the mask and part. The triangular configuration keeps the mask aligned with the workpiece while at the same time allowing air to pass through the apertures. After the abrasive blasting process, a stream of compressed air is applied to the bottom of the part and mask to cause the mask to move or flutter up and down relative to the surface of the part.

Abstract: An edge sealing apparatus for composite boards comprises a heatable iron body having a bottom, presser surface formed with a shape or profile which conforms to that of the edge of the composite board to be sealed. In the method of edge sealing, the iron body mounts a slot nozzle formed with a discharge outlet having the same profile as the iron body and the edge of the board. The slot nozzle receives a sealing material such as hot melt thermoplastic adhesive from a dispensing device, and is effective to apply a coating of the hot melt adhesive along the entire surface area of the profile of the board edge. Immediately after the hot melt adhesive is applied to the edge of the board, the presser surface of the heated iron body presses or fuses such material therein to provide good penetration into the board edge and thus obtain a substantially complete seal.

Abstract: The method of the present invention utilizes a printing paste which contains egg yolk as the adhesive paste. The painting paste is prepared as a uniformly kneaded mixture comprising 100 wt. parts of egg yolk, 1-10 wt. parts of a preservative, 1-10 wt. parts of a lower alcohol, 20-40 wt. parts of an alkyd paint, and 5-30 wt. parts of a water soluble resin clear paint. The printing method comprises the steps of printing a design on the surface of a textile product at room temperature under ambient pressure, fixing the alkyd paint together with the paste on the textile product by drying the textile product, removing the residual paste from the textile product by washing with water, and drying the product. As the egg yolk acts as a paste and an adhesive to fix the alkyd paint on the textile product with improved fastness, the alkyd paint will remain fast on the textile product withstanding repeated washings. Products obtained by the inventive method are also disclosed.

Abstract: A method is described for producing a faux finish on a substrate having a non-porous surface, such as metal, by applying a coating of wet paint to the surface of the substrate moving at a substantially constant rate, immediately non-uniformly spattering the surface wit a mixture of paint solvent and protective coating, such as lacquer and lacquer thinner, and inducing the wet paint to flow randomly on the surface before drying, thereby creating a faux finish protected by the coating.

Abstract: A method for creating a registered embossed pattern on a metal coil includes providing a pattern applicator roll and a drive motor for rotating the roll, moving the coil sequentially into contact with the applicator roll means and permit it to create a pattern on the moving strip. Measuring the pattern length and comparing the same with the desired pattern length. Adjusting the speed of rotation of the pattern applicator roll if the measured pattern length departs from the desired pattern length by a predetermined amount preferably coil line speed is also monitored. A microprocessor may be used to effect the comparison between the desired pattern length and the actual pattern length. Apparatus for creating a registered embossed pattern on a metal coil includes a pattern applicator roll which has the strip from the coil moved into contacting relationship therewith, an appropriate drive motor to drive the roll, and apparatus for monitoring coil line speed, pattern length and motor speed.

Abstract: A liquid composition for protecting a positively charged surface, the composition comprising: negatively charged polytetrafluoroethylene polymer resin particles and at least one member of the group consisting of methyltrimethoxysilane and an amino functional polysiloxane; whereby the negatively charged polytetrafluoroethylene molecules fuse to the surface upon exposure to ambient temperatures above about 68 degrees Fahrenheit.

Abstract: In a method to spray a coating of uniform thickness onto a spinning disk, a point is located spacially on the spinning disk at a distance from the center equal to about half of a spray stripe width plus half of the disk radius. The spray stream is moved in a ring-shaped pattern centered at the point and having a perimeter defined at the stripe mid-line. The perimeter diameter is equal to the disk radius. The spray stream is moved around the pattern with successive speeds, namely a base speed for a semicircular outer zone at the periphery of the disk and a smaller inner zone at the center, and lesser speeds for intermediate zones. For a concentrically contoured disk, between the above cycles the spray stream is affixed perpendicularly to a slanted surface of the spinning disk for a time period sufficient to compensate for a thickness deficiency.