Abstract: A method for treating fiber insulation to minimize the formation of dust and airborne particulate and waterproofing calcium silicate by applying to the insulation an aqueous composition containing certain water-dispersible polymers. The method is especially useful when used in conjunction with the removal of installed insulation.

Abstract: Polyurethane-backed substrates such as attached cushion carpeting are prepared from a polyurethane forming composition based on a soft segment prepolymer of MDI or an MDI derivative. The use of the prepolymer provides a backing having good strength properties and good resiliency.

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: This invention relates to a fabric having a radiation cured crosslinked coating composition applied to the selvages of the fabric to provide ravel resistance thereto. The coating composition is a copolymer of an elastomeric-forming low viscosity monofunctional acrylate monomer and a reactive polyfunctional acrylate monomer. A method of forming a ravel resistant selvage in a fabric is also provided.

Abstract: In a process for mass producing optical storage sheets, an elongate film of a liquid crystalline material is fed lengthwise along a path through an aligning gate. The aligning gate applies to successive areas of the film a field which aligns the molecules. The field may be an electric field and/or a shear field. An aligning layer, such as a surfactant layer may also be used for alignment of the film areas. The aligned film may then be cut into pieces for use as microfiches or microfilms. The film material is preferably a liquid crystal polymer material.

Abstract: A heat-sensitive recording material produced by a process wherein an excess amount of a color developing layer coating solution or a protective layer coating solution is removed by a roll blade coater is excellent in recording machine applicability and dynamic sensitivity without bringing about streaks, pressure fogging and heat fogging on the uppermost treated surface.

Abstract: Transparentized paper, free of residual solvent, is fabricated by coating a web of paper with a solvent-free transparentizing medium, allowing the medium to remain on the paper for a period of time sufficient to saturate part but not all of the thickness of the web, removing the excess transparentizing medium and storing the paper for a period of time sufficient to equilibrate the concentration of transparentizing medium in the thickness of the web. Also included are solvent-free transparentized papers produced by this method.

Abstract: Continuous glass fiber reinforced composites are made by pultruding the fibers with mixtures of certain silanes and thermoplastic resin in which the silanes have adsorbed onto the thermoplastic resin.

Abstract: An improved process is provided for treating a porous web (especially fabric) to produce a novel silicone polymer internally coated web. In the process, a starting curable liquid silicone polymer is coated under pressure upon one surface of the web, and the web is then subjected to localized shear forces sufficient to move the silicone polymer composition into interior portions of the web and to distribute the silicone polymer composition generally uniformly therwithin in such planar region. Excess silicone polymer composition is wiped away from a web surface. Thereafter, the resulting web is heated or irradiated to cure the silicone polymer. Preferably a web is preliminarily impregnated with a fluorochemical. Webs procuded by this process are breathable, waterproof or highly water repellent, and flexible.

Abstract: Process for the manufacture of continuous moulded bodies from structures of reinforcing fibres impregnated with thermoplastic plastics, wherein a structure of reinforcing fibres is passed through a melt of the thermoplastic at a pressure of 1 to 800 bar for a length of at least 300 mm and a device for carrying out the process.

Abstract: A process of carding several different types of fibers into webs, combining the webs by layering alternate types and needle punching the combined webs into a tightly felted sheet impregnating the sheet on both sides with a synthetic rubber latex and curing the latex in place by baking the impregnated sheet.

Abstract: A method for producing gradient gel medium membrane for electrophoresis in which a monomer solution having a continuous concentration gradient and a polymerizing reaction initiator solution are supplied to a coating head as a gel forming solution for electrophoresis while mixing the monomer solution and the polymerizing reaction initiator solution with each other so as to coat a moving web with the gel forming solution. The coating liquid is supplied onto a moving web through the coating head in such a manner so that the flow of the coating liquid extends continuously in the direction of width and is continuously reduced in the direction of thickness along the coating head from its supply inlet to its slot opening.

Abstract: A method for producing gradient gel medium membrane for electrophoresis for determining the base sequence of DNA or DNA partially decomposed material providing an improved productivity. High and low concentration monomer solutions are mixed with a predetermined quantity of polymerizing reaction initiator solution by a static mixer to prepare a gel forming solution for coating on a continuously moving web. The flow-rate ratio of the high and low concentration monomer solutions is gradually changed so as to vary the concentration of the monomer in the gel forming solution alternatively from low to high and from high to low along the web.

Abstract: Elongated granules of reinforcing fibers extending generally parallel to each other longitudinally of the granule substantially uniformly dispersed throughout a thermally stable, readily melting, film forming thermoplastic adhesive, providing complete dispersion of the fibers during an injection molding cycle, conserving physical properties and providing significantly better EMI shielding than prior art extruder compounded resin/fiber blends.

Abstract: A method for replenishing depleted portions of an ink sheet including a conductive ink layer on a dielectric layer wherein portions of ink have been transferred to a transfer medium. Conductive replacement ink material is supplied to the ink sheet and an electric charge is induced in the replacement ink and opposite charges are induced at an electrode on the opposite side of the dielectric layer. Replacement ink contacting the dielectric layer at the voids will adhere to the ink sheet, but charges in the replacement ink contacting the non-transcribed ink regions will flow to the conductive ink layer and will not adhere to the ink sheet.

Abstract: A barrier fabric is provided which is impermeable to liquids and permeable to vapor. A polymer film is laminated to a porous fibrous web. The composite web is then needled repeatedly with fine conical needles to provide micropores through the film.

Abstract: A stainless steel wire for springs is proposed which has a colored coating of resinous paint thereon. The wire is coated with a paint, dried and baked to form a coating and is then drawn to a desired diameter. The coating has a good adhesiveness and good heat resistance. The stainless steel wire may be nickel-plated before painting.

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: Pultrusion with cure by ultraviolet (UV) radiation, for manufacturing FRP wherein a continuous reinforcing material, most commonly, glass roving is first impregnated with a curable liquid resin and pulled through a UV transmittent die having a desired cross section and a sufficient length to effect the cure and, during passage through such a die, the continuous resinous material or FRP material is subjected to exposure to UV radiation to complete the pultrusion. The invention lies in prevention of sticking trend of the uncured resinous material onto the internal wall of the die. The present invention eliminates the sticking trend by a coating on the internal wall of the glass die. Another embodiment of the pultrusion uses a pipe die having a short length which is insufficient to allow completion of the cure reactions, and then, after passing through such a die, the FRP material to be cured is introduced into a medium liquid of UV transmittent type pressure and therein the material is exposed to UV radiation.

Abstract: A method and apparatus for coating a liquid coating composition to a moving web in which air entrained on the web is replaced by a gas having a higher solubility than air in the liquid coating composition. The moving web is exposed to the gas immediately before it arrives at a die through which the liquid coating composition is applied to the web. A vacuum system may be used to remove the air from the web prior to its exposure to the gas.

Abstract: A process for preparing a molded product of thermochromic polyvinyl chloride characterized by incorporating a thermochromic particulate material into a vinyl chloride plastisol comprising a vinyl chloride resin, plasticizer, stabilizer, lubricant and filler, and molding the resulting mixture. The thermochromic particulate material is prepared from particles of a non-thermoplastic resin having encapusated therein the three components of electron-donating chromogenic substance, electron-accepting substance and solvent by coating the particles with a hydrophilic high-molecular-weight compound.

Abstract: Pultruded plastic substrates are produced which contain fine conductive elements of metal wires or conductive rovings. These conductive element containing pultruded articles are electrostatically coated.

Abstract: Fleece materials are coated, in particular on both sides, with a viscous liquid by applying the viscous liquid to at least one side of a web from at least two dies.

Abstract: A yarn with a smooth coating is produced by coating a yarn with a thermoplastic material in the melt state, drawing the coated yarn through a heated dye, and cooling the coating.

Abstract: An output scanner exposure cylinder perforated to allow exposure film to be held on to the cylinder by vacuum comprises a metal substrate carrying a coating of cured black resin composition which has been machined to e.g., a thickness of 0.1 to 1.5 mm. The resin is usually an epoxy resin and is applied as a powder and cured by heating.

Abstract: A non-adhesive coated area substantially accurately coinciding with the width of a blade is formed on an adhesive sheet fabricated by forming the adhesive layer by coating an adhesive on the entire one side surface of a release sheet, scraping the adhesive layer by a blade having a suitable width to form a non-coated area in the adhesive layer, and then bonding a surface sheet to the adhesive layer having the non-coated area.

Abstract: A method of and apparatus for the hot melt or other fluid coating and the web handling of lightweight low web-tension-supporting, non-woven and similar materials, having a novel nozzle region using entrance and exit web-supporting surfaces and positioning in order to compensate for web deflection caused by the fluid coating ejection forces that otherwise render the coatings non-uniform and destroy sharp leading and trailing edges of intermittent coatings.

Abstract: Transparent blends of polymethyl methacrylate and BPA polycarbonate are provided resulting from solution casting and melt blending procedures. The blends are useful as glazing materials and for making optical disks and other injection moldable articles for which an easy flow polycarbonate is desirable.

Abstract: A multilayer laminate having at least one layer of a no longer formable fully aromatic polyimide and at least one layer of substrate material, the layer of no longer formable polyimide adhering directly on one side to the layer of substrate material with a peel strength of at least 4.0 N.cm. The layer of no longer also formable polyimide is also insoluble in phenolic solvents, has a tensile strength of from 100 to 150 N.mm.sup.2, a breaking elongation of from 15 to 100%, a dielectric dissipation factor of from 1.5.times.10.sup.-3 at 1 Khz. Additionally, a layer of heat-sealable high-temperature adhesive selected from the class of polyacrylates, polysulfone resins, epoxy resins, fluoropolymer resins, silicone resins or butyl rubbers is joined to that side of the polyimide layer which is remote from the substrate material.

Abstract: A method of forming a large area electronic element, e.g., a large area integrated microelectronic circuit which has at least one dimension in excess of three inches, by forming a film of photoresist separate from a surface to be etched, and thereafter depositing the film of photoresist on the surface to be etched. The deposited photoresist film is then exposed to actinic radiation and developed, and the exposed, underlying surface may thereafter be etched.The method for depositing the photoresist involves passing a viscous liquid composed of photoresist and solvent under positive pressure through a very thin elongated orifice that extends across and in close proximity to (e.g., 0.01 inch or less), but spaced apart from the surface to be processed to form a very thin flexible continuous film of liquid photoresist composition issuing from the orifice.

Abstract: An article for protecting a substrate includes a preshaped member having a shape similar to that of the substrate being protected, the article having a thin layer of gel disposed in intimate contact with an inner surface of the member such that the gel is disposed in intimate contact with the substrate when the member is disposed therearound. Preferably, the gel comprises an open looped three-dimensional network, the gel being relatively soft, elastic, and having an ultimate elongation in excess of 100%.

Abstract: A method and an apparatus for applying an emulsion onto a screen-printing plate are disclosed, in which an emulsion film having thereon an applying emulsion of a predetermined thickness is prepared, which film is closely contacted with the screen-printing plate on its printing side for applying the emulsion thereon. Preferably, a penetrable agent is supplied for facilitating the release and adhesion of the applying emulsion.

Abstract: The present invention is directed to method for making silconecoated woven fabric substrates, and the products produced by such method. The method comprises the steps of applying a first liquid polysilicane elastomer to the substrate so as to form a base coat, curing the base coat, applying a second liquid polysilicane elastomer over the base coat so as to form a top coat, and curing the top coat. By specifically selecting the polysilicane elastomers as well as the substrate, and by further selecting the reaction parameters, a high strength, non-flammable, waterproof, self-cleaning, translucent and weather-resistant fabric is produced.

Abstract: Disclosed herein are a method and apparatus for use in providing on the outer surface of an inner cylindrical member an epoxy coating of substantially uniform radial thickness. More particularly, the coated member is a roto-gravure printing cylinder.The method comprises the steps of applying an innermost layer of an uncured mixture of an epoxy resin and a hardener to the outer surface of the member to a depth which is less than the desired coating thickness, applying at least one additional layer of the uncured mixture to the outer surface of an already applied layer, such that the total depth of all layers is at least as great as the thickness, heating the outermost layer after the application thereof to eliminate its porosity, and after the applying steps allowing the layers to cure to form the coating.

Abstract: A method and apparatus for coating the back of carpet products providing improved control over coating weight, uniformity, and penetration. A layer of adhesive is formed on a rotating coating roll, and the upper edge of an applicator blade is brought into contact with the coated roll. The layer of adhesive is transferred to the upper edge of the applicator blade and flows under the effect of gravity to the lower edge of the blade. The back of the carpet is then pressed against the lower edge of the blade, simultaneously applying and spreading the adhesive.

Abstract: A variable-temperature pressure coating system for optical fibres, particularly for uv-curable primary coatings, includes a gas cylinder (8) for pressurizing a tank (1) of coating material, and a heat exchanger (15) controlling the temperature and thus the viscosity of the coating material supplied to a die chamber (19) through which an optical fibre (18) is passed following drawing. The temperature of the die chamber may also be controlled by the same circuit as the heat exchanger. A valve (14) serves to control flow to the die and to enable priming of the tube (13) by filling with coating material (and removal of air bubbles) prior to supply thereof to the die chamber (19). The system is designed for ease of operator handling together with production of high quality coatings at high speed.

Abstract: A method and apparatus is disclosed for facilitating passage of a seam (S) on a web (W) traveling underneath the edge of a knife blade (34) on a coating machine (A). The apparatus includes a machine frame (10) and a support surface (32) carried by the frame over which the web (W) travels. The vertical knife blade (34) is carried in a superimposed position adjacently above the support surface for contacting the web traveling between the knife blade and support surface to apply a coating material to the web. A movable blade assembly unit (B) is provided for carrying the knife blade (34) in the vertical disposition and for movement relative to the frame. A blade motion guide mechamism (C, 76, 78, 80, 82 D) is provided for positively guiding the movement of the blade assembly unit (B, 38, 40, 42, 44) on the frame when the blade is moved by the seam (S) in a backward arcuate lifting motion from a blade-down position to a blade-up position facilitating seam passage.

Abstract: A method of producing coated printing paper by the use of a blade coater. A flexible blade is pressed against a paper web carried by a backing roll, by a support member disposed on the opposite side of the blade so that the blade is bent to a specific curve. The bent blade serves to remove the excess coating applied to the paper web, with improved results. The dwell time that the coating is in contact with the paper before the excess is removed by the blade is kept to a very short period.

Abstract: A method for applying an emulsion onto a screen printing plate, in which two squeegees are arranged on either side of the screen, one squeegee of which is directed to the applying operation and the other squeegee is directed to the scraping and recovering operation. The method results in an emulsion film of uniform thickness being applied to the screen, with the thickness of the film being greater on the printing side of the screen.

Abstract: Paper sheet or board is externally sized by applying to the surface thereof a rosin-based sizing agent in the form of a foam in the production of which the sizing agent itself acts as a foaming agent. After the foam has been applied to the surface of the paper sheet or board, at least a major proportion of the applied foam is mechanically broken down to provide a substantially uniform distribution of the sizing agent over the surface.

Abstract: A method for the incorporation of an active agent into a porous structural substrate which comprises forming a pseudoplastic gel comprising:an active agentat least one solvent thereforand at least one gel forming agent and thereafter applying the gel to the structure to be treated. The penetration of the gel into the porous structure may be regulated by decreasing the viscosity of the gel by increasing the shear on the gel during its application to the porous structure. A predetermined gel penetration of the structure is achieved before 75% of the solvent has evaporated.

Abstract: Bimodal latexes having two separate and distinct particle size distributions have high solids content, good high shear rheology and good low shear viscosity. The large size polymer particles of the bimodal latex have a heterogeneous character. These bimodal latexes, e.g., styrene/butadiene/acrylic acid/itaconic acid latexes are employed in coating paper in conjunction with a mineral filler using a coating device such as a blade coater to yield high quality, glossy coatings which can be easily applied.

Abstract: A precoat metal, which has been prepared by coating a metal plate with a composition comprising (i) at least one member selected from the group consisting of (a) bis(isocyanatomethyl)cyclohexane and/or its adduct blocked with a blocking agent and (b) an isocyanate blocked with ethyleneimine and (ii) a polyol resin, and heating the thus coated metal plate to cure the coating material.Such film, when applied as a coating to a metal plate is completely free from yellowing and thermal degradation, and also exhibits increased hardness as well as a high flexural strength, staining resistance and chemical resistance.The precoat metal is advantageously utilized in construction materials, for example, roof decking and wall panels; and materials for light electrical appliances such as refrigerators and radios and TV, vending machine cabinets etc.

Abstract: In a coating method, a web is run along a stationary metering member having a curved smooth surface at the upper end in such a manner that the web is in contact with the smooth surface, a solution which is substantially the same in composition as a coating solution is continuously supplied to the web at a position which is before the metering member, to wet the coating surface of said web, and a predetermined quantity of coating solution is supplied continuously to the web at a position which is after the metering member.

Abstract: A backing mat for a water-permeable artificial grass having a grid-like structure consisting of elastically pliable foamed plastic sections and openings arranged therebetween. To improve the qualities of the artificial grass with regard to tread elasticity bulbous projections are formed of foamed plastic on the underside of the backing mat at the edges of the openings.

Abstract: Providing an electrical conductor with an insulation layer having a layer of dielectric carrier with magnetically permeable particles dispersed within the carrier, in which homogeneity is maintained in a fluid mixture of a fluid carrier and the particles, the conductor is moved vertically through a die means to coat it with a fluid layer of the mixture, the fluid carrier is dried and thickness of the dried insulation layer is controlled. This control is achieved by monitoring the thickness or diameter of the dried layer and, if a variation exists between the monitored and required values, the rate of fluid flow through the die means is adjusted to adjust the monitored values towards that required.

Abstract: A coating method comprises the steps of feeding a base material into a gap defined between a coater die and a base material feeding roller and coating said base material with viscous material discharged from said coater die, wherein the dimension of the gap between the coater die and the base material feeding roller is adjustably varied under action of a pressure at which said viscous material is discharged from the coater die in response to a variation in said pressure. The coating apparatus used for execution of the coating method is so constructed that at least one of said coater die and base material feeding roller is supported by a displacement control device so that said coater die or said base material feeding roller is displaceable against action of said displacement control device under effect of a pressure at which viscous material is discharged from the coater die.

Abstract: In a method of insulating an electrical conductor, the conductor passes upwardly through a coating fluid and a die means which is carried in a vertical position by a supporting fluid force. This force is provided by the supporting force of the fluid or a magnetic force which holds the die in suspension. Freedom for horizontal movement of the die is provided to enable it to move in a manner corresponding to any lateral movement of the conductor, this die movement being controlled by hydrodynamic forces between conductor and die to maintain the concentricity of a fluid layer formed on the conductor.

Abstract: A sheet material adapted for producing pressure sensitive elements includes an electrically conductive net-shaped member having projecting and recessed portions, and an electrically insulating layer in which the net-shaped member is buried such that only the projecting and recessed portions thereof are exposed out of the insulating layer, planar members are further provided on both sides of the insulating layer, while each of the planar members is provided with a resistance layer deposited on a surface thereof facing the insulating layer, so that when a depressing force is applied across the planar members, the resistance layer deposited thereon is brought into contact with the exposed portions of the net-shaped member. A method for producing the sheet material is also defined within the scope of the invention.

Abstract: A method for applying a blown polyurethane coating to carpeting or other sheet material. The method includes the step of adding a filler to the polyurethane components to assure that the liquid does not unduly penetrate porous goods. The mixed polyurethane components are then placed in a puddle on the sheet material and leveled to a uniform coating. Steam is passed through the sheet material and the coating to initiate the reaction of the components. The steam also adds water to the coating, so the formulation is such that additional water is needed, and the needed water is added by the steaming. After the polyurethane has completed blowing, and before the polyurethane has cured beyond its plastic state, the foam may be compressed to decrease the thickness. A second sheet of material can be placed over the polyurethane to prevent the polyurethane from adhering to the compressing roller.