Abstract: A process with its corresponding device for the obtainment of a laminar body with therapeutic aims. The laminar body is provided with a first magnetizable impression in the form of a mesh pattern, and a second impression of bipolar geometric form and created of magnetite-rich ink is formed as a core within each ring which makes up the mesh. The impressions are magnetized by displacing the laminar body through the air gap of a magnetizer. Polymerizing and fixing of the resin incorporated in the ink occurs by displacing the laminar body across a forced air heater, followed by gathering of the marked and polymerized laminar body onto a bobbin which determines the linear velocity of the laminar body.

Abstract: A process for preparing an orientation film for liquid crystals which comprises forming a base layer of a thermoplastic or non-thermoplastic resin to be used for the orientation film, on a substrate for liquid crystal display, and rubbing the base layer under heating at a temperature not lower than 50.degree. C. but below the melting temperature of decomposition temperature of the resin.

Abstract: A method of accurately applying maskant to a workpiece using one or more scanned laser beams and a maskant delivery device. The method includes the interaction of the laser beams with the maskant material while the material is in transit to, and after it has reached the surface of, the workpiece. Other features of the method include: laser roughening of application surfaces and laser melting of maskant to enhance adhesion of the maskant, laser measurement of maskant edges and correction of detected edge errors, and suppression of maskant ignition by forced ventilation and inert gas environments.

Abstract: A ferritic stainless steel, of which the surface is coated with a blade-like aluminum oxide, is disclosed. The ferritic stainless steel can be manufactured by heating a ferritic stainless steel containing aluminum at the surface in a stream of purified air. The aluminum-containing stainless steel possesses improved adhesiveness to catalyst carrier which can be utilized in a honeycomb metal structure for a catalytic converter for automobile exhaust gases or in a catalytic device for purifying combustion gases.

Abstract: A method of forming a silver image receiving element in diffusion transfer photography by hydrolyzing a surface of an alkali-impermeable polymer layer on a continuous running web so as to convert the polymer to an alkali-permeable polymer. The method includes the steps of first applying a liquid mixture of a hydrolyzing agent and a softening agent to the surface of the alkali-impermeable polymer layer, evaporating the softening agent in the liquid mixture by blowing air on the surface to form a concentrated layer of the hydrolyzing agent; and thereafter accelerating the occurrence of hydrolysis by blowing air on the surface so as to initiate hydrolysis reaction of the surface to as to convert the alkali-impermeable polymer layer to an alkali-permeable polymer layer. The temperature of the air which is blown on the surface is in the range of 50.degree. to 120.degree. C.

Abstract: Metal strip is coated with a coating material containing a volatilizable solvent and is heated in an enclosure for vaporizing the solvent. Condensation of vapors on the metal strip within the enclosure is avoided by providing an exhaust of sufficient capacity to withdraw all of the heated and vaporized solvent, after which it is burned, mixed with a gas having a temperature lower than its temperature, and returned into the enclosure and applied against the surface of the metal strip.

Abstract: A method of modifying the surface state of a material or a medium, in particular of the paper and/or card type for the purpose, in particular, of printing on said surface or medium, whereby a plurality of inks and/or varnishes are applied simultaneously on the surface of said material, said inks and/or varnishes being deposited or treated in such a manner as to provide zones on the material or medium suitable for retaining dusting particles which adhere exclusively on said zones, with excess dusting particles then being removed by suction and/or blowing, with said operation being followed by drying at a temperature and for a period of time suitable for fixing all of the types of ink or varnish, wherein the dusting comprises thermoplastic or hot-setting powders which are melted in an atmosphere of air having sufficient humidity to counter a large drop in the humidity of the medium under the effect of the means for melting the powders. Applicable to printing in relief on paper and card.

Abstract: A fibrous material, such as fiberglass insulation, is treated to minimize the generation of static electricity when subjected to agitation, such as by sawing, chopping, blowing, etc. during manufacturing, handling and/or installation, by applying an anti-static composition onto a mat of the material during the manufacturing process. The anti-static composition preferably is an aqueous solution containing an active anti-static agent including a nonflammable glycol humectant and two water soluble quaternary ammonium compounds, one serving as the primary anti-static ingredient and the other serving as a corrosion inhibitor and stabilizer. The anti-static composition is sprayed onto the surface of the mat as it travels through the cooling zone and the cooling air drawn through the mat causes the anti-static agent to penetrate through substantially the entire thickness of the mat.

Abstract: A process for diffusing and subliming water-soluble and water-insoluble materials into never-dried, shrinkable aromatic polyamide fibers, using steam heated at certain controlled temperatures, within a specially designed treatment chamber and a process and apparatus for treating a tow of shrinkable material.

Abstract: Process for the production of a bilayer membrane consisting of a selectively acting nonporous polymer membrane first layer and a microporous membrane second layer, in which a polymer solution intended for the formation of the first layer is brought into contact with one side of the second layer. A larger amount of polymer solution than is necessary for the formation of the first layer is used, and a portion of the solvent is caused to volatilize through the pores of the second layer. The polymer solution is not caused to enter the pores of the second layer. After the first layer has attained the desired thickness, the excess polymer solution is removed. The first layer may be subjected to a drying and/or cross-linking treatment.

Abstract: A molded article of a thermoplastic resin is printed by impressing characters, symbols or figures on a thermoplastic resin molding. These characters or the like are first printed upon a resin molding. A high-temperature compressed gas is then directed against the printed surface of the molding so that the temperature and pressure of said gas is between 100.degree. to 300.degree. C. and 0.05 to 5 kg/cm.sup.2, respectively.

Abstract: The present invention is a process for applying a semi-permeable coating on a hollow fiber substrate. The hollow fiber substrate is continuously passed through a polymeric coating solution and withdrawn from the solution through a coating die to form a uniform polymeric solution coating on the outer surface of the hollow fiber. The coated hollow fiber is dried by passing it through a convective flow tunnel in which the rate of drying is controlled both by a pre-determined temperature profile in the tunnel and by a controlled air flow rate through the tunnel. The resultant material is a semi-permeable, coated composite hollow fiber membrane which can be used in gas and/or liquid separations.

Abstract: Emulsion type rust-preventive baking composition which comprises a polymer emulsion such as an aqueous acrylic resin emulsion and a heat-fusible organic filler having a melting or softening point within the range of 40.degree.-250.degree. C. which is higher by at least 10.degree. C. than the lowest film-forming temperature of the polymer emulsion, as incorporated in the polymer emulsion. When the emulsion type rust-preventive baking composition obtained by the mixture is coated on reinforcing steel rods or the like treatment targests and baked, the heat-fusible organic filler melts and fills pores in the rust-preventive coat film, whereby the coat film is rendered close and compact to produce excellent rust-preventive effect.

Abstract: A vibration damper for use with an apparatus for applying liquid to both sides of a running web and then drying the web with an air drier. Vibrations induced by the air drier are damped by uniformly blowing air on both sides of the running web between the drier and the liquid application heads. Preferably, the gas ejection surfaces are stepped or tapered so allow larger vibrations near the drier but to reduce the allowed vibration nearer the liquid application heads.

Abstract: A process for heavy-duty anticorrosion treatment of a metal article is provided wherein the article, promptly after being hot plated, is coated with a synthetic resin thereby to bake the resin on the plated article with the heat remaining in the plated article.

Abstract: This specification discloses a method of bonding an oil-based ceramic paint to a surface of a glass sheet. The method is initiated by washing the glass sheet with hot water to both clean and heat the glass sheet. Any excess water is removed from the washed glass sheet. An oil-based ceramic paint is applied to a surface of the washed glass sheet. Thereafter, the heat placed in the glass sheet by the washing operation is utilized to take part in the bonding of the ceramic paint to the surface of the glass sheet as the oil vehicle of the ceramic paint is evaporated.

Abstract: A process for diffusing and subliming water-soluble and water-insoluble materials into never-dried, water-swollen aromatic polyamide fibers, using steam heated at certain temperatures.

Abstract: Articles of clothing formed of knitted fibers in which the article of clothing is substantially saturated with an aqueous solution containing to 10 percent polyvinyl alcohol and 1 to 30 percent glycol plasticizer; configuring the article and thereafter drying.

Abstract: A method for making mirrors and a mirror product, free from black edge and similar adhesion problems, are provided by coating a metal film onto one side of a glass sheet and then heating the glass and film with convection heating to a temperature above 200.degree. F. using hot air.

Abstract: A filter for an air cleaner is produced by impregnating a fiber web composed of one or more layers with a liquid binder in the form of solution, suspension, or emulsion. The impregnated fiber web is dried such that the solvent or dispersing medium on one side evaporates faster then that on the other side. As the result, more binder is deposited on one side than on the other side; in other words, a gradient of binder distribution is formed. The thus-produced filter has such a structure that the voids among fibers continuously change across the thickness, while fibers are bonded together by the binder. The filter thus produced can collect more dust than a conventional one.

Abstract: This invention comprises a treating apparatus and method that, in one continuous process, applies a treating solution to a wood article by utilizing a radial dipping apparatus, removes excess treating solution from the treated wood article, dries the remaining protective coating on the wood article by utilizing a radial drying apparatus, and then, if desired, paints the coated article and finally cures the paint to provide immediate assembly of the wood article into a window or door frame.

Abstract: Curing of autodeposited coatings by treatment with water or steam including a solute.

Abstract: A web dryer for use in the graphic arts industry or the like includes a dryer housing through which a printed web travels and which contains a plurality of nozzles, an air inlet, an air exhaust and a source of heat. The desired ventilation rate for purposes of maintaining the interior dryer environment at a required low percentage of the Lower Flammable Limit is designed to be dependent on the measured or calculated rate of ink application to the web. The ink application rate and information regarding the actual exhaust flow or ventilation rate is fed to a ventilation rate control and the exhaust flow or ventilation rate is then varied in response thereto, as by controlling a variable speed exhaust blower. At the same time, make-up air is provided to the dryer interior, preferably at a point remote from the exhaust discharge duct so that it thoroughly mixes with recirculating air within the dryer to reduce condensation problems.

Abstract: This invention relates to improvements in and relating to curing of surface coatings and has been devised particularly though not solely for the curing of surface coatings such as paints or inks.

Abstract: Curing of autodeposited coatings by treatment with water or steam.

Abstract: A method for drying a running web or belt-like support with an organic solvent-containing coating solution coated thereon is described, comprising introducing the support into a drying room and drying it mainly by hot air blown into the drying room in parallel to the running direction of the support in such a manner that it does not strike directly on the coated surface of the support, while conveying the support in an arch-like or straight form on rolls provided in the drying room. This drying method provides high quality coated-layers and increases producitivity. Further, this method is particularly useful in the preparation of magnetic recording material.

Abstract: A method for applying a PVDC polymer coating to the outside of a PET parison includes deionizing the surface of the parison, dipping the parison into an aqueous PVDC dispersion, withdrawing the parison at a controlled rate to prevent slubbing of the polymer coating, and drying the coating by exposure to desiccated air. The method dramatically reduces the energy requirements for coating operations yet produces a finished biaxially oriented PET container having superior gas barrier characteristics.

Abstract: In a method and device for applying and subsequently drying a coating on a hin rigid board, the board is conveyed in vertical position, either hanging from or standing on the conveyor. The boards are clamped at one marginal zone, which preferably extends in a direction of horizontal advance. In a coating unit applicator rolls are positioned on both sides of the path of the boards. The applicator rolls rotate on vertical axes. The coating liquid is fed to the applicator rolls by vertical slot orifice nozzles. In the drying zone nozzles and heaters for drying the coating are arranged symmetrically to treat both surfaces uniformly and to stabilize the vertical position of the boards. The method and device are particularly useful in applying a light sensitive coating to basic materials in the production of printed circuit boards.

Abstract: A controlled quantity of a liquid polyimide precursor compound is deposited on the active surface of an integrated circuit die which has been prepared for packaging, and thereafter cured using a two step curing process to develop a polyimide coating of sufficient thickness to provide alpha particle protection for the die once packaged.

Abstract: A finishing method and apparatus for use in conventional hot-dip coating of the type wherein a ferrous base metal strip, having been appropriately pretreated so as to be at or near the proper coating temperature and so as to have its surfaces free of oxides, is cause to pass beneath the surface of a bath of molten coating metal, exiting the bath between conventional finishing rolls. The method comprises the steps of providing an enclosure which overlies at least the coating metal meniscus areas created between the finishing rolls and the strip, and maintaining within the enclosure an inert or non-oxidizing atmosphere to shroud the meniscus areas. The apparatus comprises the above mentioned enclosure with an appropriate system to provide and maintain the inert or non-oxidizing atmosphere therein.

Abstract: A method and apparatus for simulating a process carried out on a moving web in which the web is held stationary while movement through a sequence of processing zones is simulated by means for rapidly changing the process conditions to which the web is exposed, and methods and apparatus for rapidly changing the operative parameters in a processing zone.

Abstract: A method and apparatus for impregnating low density fiberboard with asphalt is disclosed, and which includes stacking the sheets, placing the stacks in a sealable chamber, and flooding the chamber with a treating solution composed of a mixture of asphalt and solvent. The chamber is thereafter drained, and the fiberboard is then heated by the injection of live steam into the chamber. A partial vacuum is then drawn in the chamber, while condensing and separating the withdrawn solvent and water vapors. Both the condensed solvent and water of the steam injection system are maintained in closed conduit systems to permit their reuse and to prevent contamination of the environment.

Abstract: Apparatus for practicing the process of the present invention includes a flashing section which emits high-velocity, hot air onto the substrate, and a drying and curing section disposed downstream of the flashing section which emits high-velocity, hot air and radiant energy onto the substrate. The flashing and drying/curing sections are fluidically connected to an exhaust duct disposed upstream of the flashing section whereby the spent hot air, and entrained volatiles, are exhausted and recirculated for subsequent flashing and drying/curing process steps. The flashing section comprises air knives having their exhaust directions inclined in the upstream direction toward the exhaust duct, and fresh ambient air may also enter the exhaust stream from a downstream position so as to alter the percentage of volatiles within the recirculated air stream.

Abstract: A method and apparatus for forming an electrically conductive layer on a corrosion-resistant layer which covers a cable. The cable is passed through a powder accumulating tank in which are mixed an electrically conductive powder and binder powder so as to allow the mixed powder to initially adhere to the surface of the cable. The mixed powder is then pressed against the surface of the cable first at a cable outlet of the powder accumulating tank and then with a powder applying device in which an endless powder applying belt or cloth is rotated around the cable at a rotational speed dependent upon the linear speed of the cable. The surface of the cable is then heated to melt the binder powder and cause the electrically conductive powder to yet more firmly adhere to the surface of the cable. The cable is then cooled and wound.

Abstract: An improved method of producing a silver halide photographic material having a layer containing gelatin coated on a support is disclosed. The coated layer is dried so that its surface temperature during the falling rate drying period is more than 5.degree. C. over the melting point of the layer during drying and the jelly strength of the gelatin is at least 200 g according to the PAGI method.

Abstract: A process for applying a volatile liquid maskant to an article to be subjected to chemical milling includes the steps:(a) providing a controlled temperature bath of said volatile maskant characterized as fast drying, and also providing a vapor blanket overlying the bath,(b) placing the article into position above the level of the bath and blanket, and adjusting the temperature of the article in relation to the bath temperature,(c) lowering the article through the blanket into the bath, and withdrawing the article upwardly from the bath and through the blanket at a controlled rate characterized in that the maskant coats the article to controlled coat thickness, and also in that the bath remains substantially free of return drainage of maskant off the withdrawn article,(d) and, following said upward withdrawal, flowing a gas stream into contact with the maskant coat while the article remains above the level of the bath to assist in rapid drying of the maskant.

Abstract: A method and apparatus for repairing plastic and vinyl materials utilizes a heat curable repair compound and a hand tool which supplies a narrow jet of heated air. The hot air tool receives air at a constant low pressure from a regulated air supply and includes an electrical heating element which heats the air passing through it to a temperature sufficient to cure the repair compound. Damage to plastic and vinyl materials can thus be repaired by trimming the damaged area, filling the trimmed area with the heat curable compound, heating the compound with the jet of air from the tool and finally, texturing the surface by the application of graining paper to the patch.

Abstract: A process of producing a magnetic recording element comprising a non-magnetic support having provided thereon a subbing layer and further having provided thereon a magnetic layer comprising a ferromagnetic powder and a binder, in which the non-magnetic support is a biaxially stretched polyester and the subbing layer is formed by coating a coating solution having a solids concentration of about 0.8 to about 5 wt% comprising an amorphous linear saturated polyester resin containing an aromatic dicarboxylic acid, 10 to 50 wt% of a vinylidene chloride addition polymerizable nitrile copolymer based on the polyester resin and an organic solvent mainly composed of methyl ethyl ketone, which comprises coating the subbing solution at a temperature of about 100.degree. C. or below to provide a dry thickness of about 0.03 to about 2.0 .mu.m, drying the coated layer and then coating the magnetic recording layer thereon.

Abstract: An abrasive material and process for manufacturing the same. The process comprises: (i) applying a basic binder layer to a flexible support; (ii) scathering abrasive particles onto the basic binder layer; (iii) drying and subsequently cooling the resultant product; (iv) applying a second binder layer as a sizer to the cooled product of step (iii); (v) drying and cooling the sizer; (vi) loosely rolling up the product of step (v); and (vii) curing and subsequently cooling the product of step (vi) by passing a heating or cooling air stream substantially axially through the rolled-up product. The basic and second binder layers each comprise an aqueous mixture of (A) at least one predominantly ortho-structural resol having a molar ratio of phenolic component to formaldehyde of from 1:(1.1 to 2.5), and (B) at least one polyvinyl alcohol in an amount of from 5 to 30% by weight based on the weight of solid phenolic resin.

Abstract: A process for depositing a microporous electron-emissive cathode coating material by spray means is depicted. The process comprises preheating the cathode assembly and spray means by enclosing the assembly and spray means in a cathode assembly spray chamber having a laminar flow of gas therein and stabilizing their temperature at a predetermined elevated value. The cathode assembly is sprayed with a first coat of the material to a predetermined initial thickness. The material is fast dried by holding the cathode assembly in an enclosure having a laminar flow of gas at an elevated temperature. A second coat of the material is then sprayed on to a predetermined final overall thickness. Due to the preheating and fast drying according to the invention, the coating material so deposited is uniformly dense and the coating surface is smooth and microporous to provide enhanced emissivity and life and enhanced resistance to poisoning by contaminants.

Abstract: The velocity of a free falling coating composition stream emitted from a coating applicator is altered prior to reaching a web by streams of gas directed over air foils situated immediately adjacent said coating composition stream.

Abstract: The method and apparatus of the present invention substantially reduce the incidence of cracking, flaking, bulging and other mold defects which originate during the drying step of the investment mold formation process. Drying is conducted under conditions which enhance uniformity of drying and which preclude harmful increases in pattern temperature resulting from changes in the moisture removal kinetics of the slurry layer. In particular, during the drying process, drying air of different quality is provided during the different stages of moisture removal from the slurry layer.

Abstract: Photocurable polyester resin compositions are provided which are adapted for use in coating applications. The polyester resin compositions are air-uninhibited and are low energy photocurable at room temperature as substantially 100% solids systems. The photocurable polyester resin compositions are cured by exposure to activating light, without the necessity of incorporating any additional ingredients in the polyester compositions.Each photocurable polyester resin composition comprises a prepolymer(A) containing maleate and/or fumarate groups, and allyl ether groups; a solvent(B) which is a non-volatile polymerizable ester of acrylic or methacrylic acid derivative; and an organic polymerization initiator(C) which is photosensitive in the presence of oxygen.

Abstract: An improved method for growing the silicon oxide memory insulator of an MNOS memory transistor is disclosed. The oxide is grown by passing a mixture of inert gas and anhydrous HCL over the substrate while the temperature is maintained within a predetermined range.

Abstract: A portable automated coating plant is formed in sections that are transported individually to various work sites and the sections are assembled in end-to-end relationship for progressively cleaning and coating steel members, or the like. The members are passed in sequence through a shot blast machine a coating system, and a dryer.

Abstract: A new, useful and nonobvious process is disclosed wherein vapor phase controlled stoichiometry is employed to obtain compound semiconductor films having large crystallite textures. The process has been found to be particularly useful in the formation of compound semiconductor films where one of the components is a high vapor pressure element and the substrate material is amorphous.

Abstract: Disclosed is a multiple-layered non-woven fabric particularly suited for use as backings for tufted carpets in view of its excellent strength and dimensional stability properties. The non-woven fabric is characterized by specifically defined strength parameters and by a graduaton of bonds throughout the thickness thereof, so that both surfaces differ from each other insofar as the degree of filament bonding is concerned.

Abstract: An improved process and apparatus are disclosed wherein the resin treatment of a web on a material treater is conducted at maximum throughput in response to especially impinging air velocity control in the dryer.

Abstract: Method of drying on a web face an applied coating containing volatile products, involving feeding the web at a rate of at least 50 feet per minute past a station at which a flame sheet from a high-capacity burner is with its tip in contact with the coated face of the fed web transversely thereof for evaporating and igniting the volatile products in the passing coating, and featuring directing into contact with the coated face of the fed web on opposite sides of and adjacent to the contacting flame sheet stable air sheets of a velocity of at least 400 feet per minute.

Abstract: The method of treating open-celled polyurethane foam by the application of a modifying ingredient, such as a dye, pigment, color stabilizer or fire retardant, for example, wherein the method comprises the steps of (a) applying an excess of a liquid solution or dispersion of the modifying ingredient to a mass of the foam, (b) removing most of the excess of the liquid by squeezing the mass, (c) passing a gas, the temperature of which is between 350.degree. F. and 500.degree. F., through the material for a period of time sufficient (1) to raise the temperature of the polyurethane mass to a point at which the polyurethane will absorb the modifying ingredient, and (2) to vaporize the liquid present in the solution or dispersion, the period of time being insufficient to cause charring of the polyurethane, thereby accelerating the absorption of the modifying ingredient into the polyurethane, so as to permanently incorporate the modifying ingredient into the foam, and (d) allowing the mass to cool.