Abstract: A method of manufacture of an interior coated weeping hose comprised of a warp yarn and filler yarn and having an interior coating comprising the steps of fastening a number of yarns longitudinally to the interior of said hose, applying a coating to the interior of said hose, pulling said hose, longitudinally disposed interior yarns and coating over mandrel to force the coating onto the interior surface of said hose other than the interior surface beneath the longitudinally disposed interior yarns, and removing the longitudinally disposed interior yarns from the interior of the hose.

Abstract: Methods of lining the internal surface of a pipe, include first inserting two lining pigs into the pipe and then introducing a batch of resin thereinto, or inserting one lining pig between two batches of a resin, or first inserting a lining pig and then inserting two batches of a resin with another lining pig therebetween, or first introducing a lining pig made of a soft material capable of deforming so as to pass through a narrow-passing section and then introducing a batch of a resin into the pipe, causing the resin to move forward until the front end of the resin reaches an inner end of the pipe, and sucking the resin back from the inner end so as to line the internal surface of the pipe with the resin. The methods use improved liquid blocking pigs for use in pipe lining treatment, each of such pigs includes a spherical body made of a soft resilient material and at least one flexible liquid barrier diaphragm interposed in the spherical body.

Abstract: Patent for "PROCESS AND EQUIPMENT FOR THE SIMULTANEOUS RECOVERY OF TWO PIPES OR TUBES WITH A HIGH DEGREE OF OBSTRUCTION", with the said process consisting of recovering each of the said obstructed pipes or tubes by means of a jet of compressed air flowing with a spiral motion from one of the extremities of each of the said pipes or tubes, with water first being added to the said jet in order to increase the passage of the air; with the said water then being followed by a cleaning solution, a volatile liquid, or another equivalent product, along with an abrasive material consisting of crushed rock or gravel, or a similar substance, in order to clean the said pipe or tube; after which an epoxy resin paint or another type of coating is added, which coats all of the inner wall of the pipe or tube, as a result of the pressure applied by the said jet of compressed air.

Abstract: A flexible sheathing tube suitable for encasing an elongated flexible body like a flexible insertion rod of an endoscope or other insertion type examination instrument, and a method for fabrication of such sheathing tubes. The flexible sheathing tube being of the type is basically provided with a flexible base structure having at least an open helical coil member of a cylindrical shape, a protective mesh sleeve fitted on the helical coil member, and an insulating outer coating layer formed on the protective mesh sleeve. The sheathing tube is further provided with an inner coat layer of a resilient material formed on the inner side of the helical coil member in such a manner as to cover the inner periphery of the helical coil member completely, filling in gap spaces between open helices of the coil member.

Abstract: Odorant depletion is reduced by passivating the internal surface of LP-gas transportation and storage vessels by the addition of passivating agents comprising mixtures of corrosion inhibitors such as phosphate esters, fatty amines, poly amides, imidazolines, poly imidazolines, quaternary amines, poly quats, dimer acids, trimer acids, polymeric acids, ethoxylated fatty amines, ethoxylated polyamides, ethoxylated alcohols and mixtures thereof in one or more solvents. In a preferred embodiment, the passivating agents contain one or more phosphate esters defined by the equation:?R--X--?C.sub.m H.sub.2m O).sub.n !.sub.k --PO(OH).sub.

Abstract: There are provided methods of lining the internal surface of a pipe, which includes first inserting two lining pigs into the pipe and then introducing a batch of resin thereinto, or inserting one lining pig between two batches of a resin, or first inserting a lining pig and then inserting two batches of a resin with another lining pig therebetween, or first introducing a lining pig made of a soft material capable of deforming so as to pass through a narrow-passing section and then introducing a batch of a resin into the pipe, causing the resin to move forward until the front end of the resin reaches an inner end of the pipe, and sucking the resin back from the inner end so as to line the internal surface of the pipe with the resin. There are also provided improved liquid blocking pigs for use in pipe lining treatment, each of such pigs comprises a spherical body made of a soft resilient material and a least one flexible liquid barrier diaphragm interposed in the spherical body.

Abstract: Methods for providing a low permeability coating on the interior of a refillable plastic container, such as a PET beverage bottle, include coating of a liquid crystal polymer (LCP) by depositing LCP monomers on the interior surface of the container and bi-axially orienting the monomers continuously while reacting the monomers to produce the polymer. The interior surface of the container may be pre-treated to produce free radicals which enhance the attachment of the monomers to the surface. Also, the surface may be post-treated to eliminate unsaturated radicals or free monomers. The application of the monomers to the interior surface of the container can be effected by condensing a gas blend of monomers, by spraying liquid monomers or by filling with liquid monomers and then emptying to leave a residual coating. The monomers are reacted by preheating them or by subjecting them to a heated inert gas.

Abstract: A plurality of petri dishes or other glass or plastic containers are coated on the inside bottom surface of the containers by passing the containers through a coating or layering apparatus. The apparatus includes an indexing conveyor to sequentially pass the open containers through a filling station where an amount of a coating material is applied while tilting the container to one side thereby distributing the material to the entire bottom surface of the container. The containers are conveyed to an aspirating station to aspirate excess material while tilting the container toward the aspirating nozzle. Subsequent to the aspiration step, the containers are tilted in the opposite direction to distribute the material in the container. The material is then dried and the containers stacked and packaged. The coating material includes metal ions such as calcium or other divalent metal ions, in a suitable carrier that is able to bond the bottom inside surface of the container.

Abstract: A method of manufacturing an interior coated weeping hose comprised of warp yarn and filler yarn and having an interior coating, the warp yarn comprising a first warp yarn and a second warp yarn having a larger diameter than the first warp yarn, the first warp yarn comprising the bulk of the warp yarn in the hose, the second warp yarn being disposed axially about the circumference of the hose, comprising the steps of weaving the first warp yarn, the second warp yarn, and the filler yarn together to form a woven hose, applying a coating to the inside wall of the woven hose, pulling said woven hose over a mandrel to remove the coating on the interior surface of the second warp yarn while the remainder of the interior surface remains coated.

Abstract: There are provided methods of lining the internal surface of a pipe, which includes first inserting two lining pigs into the pipe and then introducing a batch of resin thereinto, or inserting one lining pig between two batches of a resin, or first inserting a lining pig and then inserting two batches of a resin with another lining pig therebetween, or first introducing a lining pig made of a soft material capable of deforming so as to pass through a narrow-passing section and then introducing a batch of a resin into the pipe, causing the resin to move forward until the front end of the resin reaches an inner end of the pipe, and sucking the resin back from the inner end so as to line the internal surface of the pipe with the resin. There are also provided improved liquid blocking pigs for use in pipe lining treatment, each of such pigs comprises a spherical body made of a soft resilient material and a least one flexible liquid barrier diaphragm interposed in the spherical body.

Abstract: A process is described to realize a film made of an adequate resinous material on the internal surface of metallic pipes, particularly those made of aluminium, to protect them and further allow for particular uses for which they could not be employed otherwise. These pipes are preferably applied in the hydrothermosanitary field.

Abstract: A process for the sealing and internal repair of systems of laid conduits in which a sealant is introduced into the leaky conduit by means of water, the sealant being a finely divided, inert material. The conduit is emptied and compressed air charged with particles of an abrasive substance is blown through it. The conduit is then internally coated by blowing into it a solvent-free epoxy resin containing a hardener and fibers. Alternatively, the sealant is introduced into the leaky conduit by means of air, the sealant being dry, finely ground, water-swellable bentonite; a dry, hydraulically disintegratable plastic dispersion preparation; or a mixture thereof. The conduit is then filled with a fluid, the fluid being either water or a mixture of steam and air.

Abstract: A self locking internally threaded fastener and an apparatus and process for making such fasteners, in which the self locking characteristic is derived from a patch of thermoplastic material having a circumferential extent of less than 360.degree. adhered selectively to at least a portion of the thread defining surface of the fastener.

Abstract: A method of delivering a substance into a material mass including the steps of measuring a quantity of a carrier fluid and a material to be delivered, mixing the carrier fluid and the material to be delivered, and subjecting the mixture to a magnetic influence for increasing a permeability and effectiveness thereof by affecting the organization of the molecules of the mixture. Finally the mixture is introduced to the material mass for penetrating therein and direct, substantial absorbing of the mixture by the material mass.

Abstract: The method of the present invention lies in a method for forming a scale preventive coating for preventing polymer scale deposition generated on inner walls of a polymerization vessel during polymerization, wherein a coating liquid containing a scale preventive agent is sprayed from an upper portion in the closed polymerization vessel, suction of gas in the vessel is simultaneously performed from a bottom portion of the polymerization vessel, an excessive coating liquid is discharged, and a coating of the scale preventive agent is formed on inner walls of the polymerization vessel. According to this method, a coating of a scale preventive agent can be uniformly formed throughout the entire inner walls of a polymerization vessel even in the case of a closed and large polymerization vessel having a volume, for example, not less than 80 m.sup.3.

Abstract: A process for the sealing and internal repair of systems of laid conduits in which a sealant is introduced into the leaky conduit by means of air, the sealant being dry, finely ground, water-swellable bentonite; a dry, hydraulically disintegratable plastic dispersion preparation; or a mixture thereof. The conduit is then filled with a fluid, the fluid being either water or a mixture of steam and air. Alternatively, the sealant is introduced into the leaky conduit by means of water, the sealant being a finely divided, inert material. The conduit is emptied and compressed air charged with particles of an abrasive substance is blown through it. The conduit is then internally coated by blowing into it a solvent-free epoxy resin containing a hardener and fibers.

Abstract: Disclosed is a method of forming metal containing ceramic coatings on substrates. The method comprises applying a coating of hydrogen silsesquioxane resin and a metallic filler onto a substrate and heating the coated substrate at a temperature sufficient to convert the hydrogen silsesquioxane resin to a silica containing ceramic matrix containing the metallic filler.

Abstract: A method and system is disclosed in which an article, having large open areas or a multiplicity of apertures, is dip coated. The method and system is particularly adapted for use in coating a grid of a corona charging device utilized in the xerographic process. A transport system immerses and removes the article from a tank storing coating material. An unwanted coating material is created across the apertures of the article. Thereafter, the transport system moves the article past an ultrasonic wave source. The impact of the ultrasonic energy transmitted to the unwanted coating material across the apertures causes the removal thereof. The removed coating material is returned to the coating material in which the article was immersed.

Abstract: A method of coating a corrugated pipe includes preparing an asphalt composition having a polymer constituent within the range of from about 3 to about 20 percent by weight, the composition having a softening point within the range of from about 180.degree. F. to about 250.degree. F. and a viscosity at a temperature of 360.degree. F. within the range of from about 600 to about 4000 cps, heating the asphalt composition to a temperature within the range of from about 340.degree. F. to about 390.degree. F. and coating the corrugated pipe by positioning at least a portion of the corrugated pipe in the heated asphalt composition for a time sufficient for the corrugated pipe to reach a temperature of at least 150.degree. F. The coated pipe is then removed from the asphalt composition for cooling.

Abstract: An apparatus for glazing hollow articles of earthenware or porcelain includes a glazing station with a glaze vessel by which the article is securely held in position and which is rotatable about its axis and tiltable from an initial position about an angle of 180.degree.. In order to effectively glaze articles of bulged configuration and great depth and to allow excess glaze to drip off especially from the inside of the article, the glaze vessel is also substantially vertically movable in up and downward direction.

Abstract: Disclosed is a method of forming opaque coatings on integrated circuits. The method comprises selectively applying a coating of a silica precursor resin and a filler onto the integrated circuit and heating the coated circuit at a temperature sufficient to convert the silica precursor resin to a silica containing ceramic matrix.

Abstract: A method of applying a liquid coating material to the inside of a tank(10) and performing a hydrostatic pressure test on the tank at the same time. The method is useable for applying a liquid vitreous enamel coating material to a water heater tank, to be subsequently dried and furnace heated to form a glazed enamel internal coating. Preferably the hydrostatic pressure test is performed by displacing coating material from a portion(68) of an accumulator(51) by pumping liquid into a flexible bladder(66) housed in the accumulator. Pressure from pump(76) is transmitted to the tank(10 by the liquid coating material and held for a prescribed time interval to prove tank integrity. The method avoids excessive shear, hence viscosity changes in thixotropic coating materials.

Abstract: There is disclosed a method for coating an interior surface of an elongated pipe member. The method uses a first plug member having a resilient cylindrical body with an outer diameter close to an inner diameter of the pipe member, and a second plug member having a cylindrical body of an outer diameter smaller than the inner diameter of the pipe member and a brush provided at an end portion of the body of the second plug member, the brush having radially outwardly extending fibers having radial outer ends defining a cylindrical surface of which diameter is close to the diameter of the pipe member.

Abstract: A process for the production of microstructure elements having structure depths of from several .mu.m into the mm range by imagewise irradiation of polymers with X-rays and removal of the areas of the polymers which have been irradiated imagewise, comprises applying the polymers, before the imagewise irradiation, to an electroconductive substrate in a layer thickness of from several .mu.m into the mm range by melting under pressure, thus firmly anchoring the polymers.The process according to the invention is particularly suitable for the production of microstructure elements having structure depths of from 3 to 2000 .mu.m and lateral dimensions of less than 10 .mu.m.

Abstract: A dielectric film of a capacitor is formed using the plasma CVD apparatus. A thin Ta layer is deposited on a semiconductor wafer by using Ta(N(CH.sub.3).sub.2).sub.5 gas and H.sub.2 radicals. The thin Ta layer is then oxidized by O.sub.2 radicals to form a thin Ta.sub.2 O.sub.5 layer. An Si.sub.3 N.sub.4 layer is then formed on the Ta.sub.2 O.sub.5 layer by using SiH.sub.4 and NH.sub.3 gases. The Ta.sub.2 O.sub.5 layer and the Si.sub.3 N.sub.4 layer are alternately laminated one upon the other several times to form a dielectric film of laminated structure. The dielectric film can thus have a composition close to the stoichiometric composition and it can be made high in dielectric constant and excellent in withstand voltage.

Abstract: The processes of the invention enable depositable PFSA to be provided over he entire inner surface of hollow fibers. Additionally, the processes of this invention provide a fiber which is coated by a thin coating of PFSA which is approximately 5-40 .mu.m thick. The fiber can advantageously withstand pressure gradients between 20-75 psig throughout its wall before leakage.

Abstract: A method is provided for producing a self-supporting ceramic composite body having a plurality of spaced apart wall members, each wall member having a bounded cross-section for defining substantially continuous, fluid passageways. The wall members generally inversely replicate in opposed directions the geometry of a positive pattern. Each of the wall members, which are axially aligned, comprises a ceramic matrix having a filler embedded therein, and is obtained by the oxidation reaction of a parent metal to form a polycrystalline material which consists essentially of the oxidation reaction product of the parent metal with an oxidant and, optionally, one or more metals, e.g. nonoxidized constituents of the parent metal.

Abstract: A method for producing reinforced ceramic composite articles by means of chemical vapor infiltration and deposition in which an inverted temperature gradient is utilized. Microwave energy is the source of heat for the process.

Abstract: A method for the powder pack coating of hollow structural components is performed with spherical powder particles of a donor metal in which the hollow component is embedded. During the embedding, the component is subjected to a tumbling motion about several spatial axes to fill all cavities in the component. After the powder pack coating process the cavities of the component are cleared of any excess powder particles under the action of a gas stream. This method is suitable especially for coating engine blades having cooling ducts and cooling air holes, such as turbine blades. The effect of the forced air flow through the internal cavities for the removal of excess powder out of the hollow component is enhanced by simultaneously vibrating the component.

Abstract: This invention provides a method for providing a functionalized inner skin on the lumen-defining surface of a hollow tube using either a Newtonian coating fluid used in combination with a relatively non-Newtonian plug fluid, or a non-Newtonian coating fluid (optionally in combination with a more non-Newtonian plug fluid). This invention enables the facile provision of a functionalized inner skin on the lumen-defining surface of tubes previously deemed difficult to coat, e.g., tubes wherein the inner diameter varies along the length of the tubes, tubes having elliptical or irregular cross-sectional configurations, branched tubes, and tubes having lumens of small diameter, e.g. tubes useful in membrane applications. Preferably, the coating will be dried or crosslinked to promote sustained adhesion and/or to increase the functionality of the coating.

Abstract: A method and apparatus of applying a coating to a substrate is provided. A liquid resin is introduced into a first region at a predetermined pressure. The liquid resin is maintained within a first pressure range in the first region. Next, the flow of the resin from the first region to a second region is controlled so as to bring the resin from the first pressure range to a second pressure range, the pressures in the second pressure range being lower than the pressures in the first pressure range. The liquid resin is then applied at a pressure within the second pressure range to the substrate at a third region adjacent the second region.

Abstract: A vascular prosthesis is made by wetting a porous polyester fiber tubing with water until it gains close to maximum amount of weight, removing excess liquid from inside the tubing, repeatedly contacting the inside surface of the tubing with a solution of a biocompatible polymer in a water-immiscible solvent to adsorb some solution on the inside surface of the tubing, and removing excess solution, then removing solvent from the adsorbed solution to form a nonporous elastomer coating of the desired thickness on the inside surface of the tubing.

Abstract: A method of making a double-walled vacuum container includes the steps of forming a double-walled container from gas-impermeable, radiation transmissive material with spaced-apart inner and outer walls that enclose an interior volume with a lacuna between the inner and outer walls; coating surfaces of the container walls that face the lacuna with a reflective coating; positioning the container in proximity to a source of coherent radiant energy; and removing selected portions of the reflective coating by impinging coherent radiant energy on portions of the reflective coating selected for removal.

Abstract: A technique for fabricating a patterned conductor on the inner surface of a transparent tube comprises providing a source of conductive material inside a hollow tube and directing actinic radiation onto the tube wall where the deposition of a conductive pattern is desired to deposit conductive material thereon. That conductive deposit may be thickened by subsequent electroless or electroplating. The result is an improved magnetic resonance sensor comprising a hollow tube having "flat" conductor coils disposed on its interior surface.

Abstract: A masking film composition and method of masking a surface of an article to be coated with a protective coating, wherein a selected surface first is coated with a masking film consisting essentially of from over an approximate volume ratio of about 1:12, preferably about 1:4 of a fumed, colloidal silica, balance petrolatum, then applying and drying the protective coating, and then removing the masking film with a mild solvent naphtha.

Abstract: A method for the uniform coating of honeycomb bodies with finely divided solid matter from a dispersion in an amount which is below that which arises during customary immersion. To this end, the honeycomb is flooded from below with dispersion, emptied after a dwell time and blown out. Filling time, filling amount, dwell time emptying time as well as the time between emptying and blowing out are measured in such a manner that in order to increase the separated amount of solid matter, filling time, dwell time, pumping-out time and the time between emptying and blowing out are increased but the filling amount is reduced.

Abstract: A medical instrument having a blood contact portion formed of a hydrophobic material, wherein a surface-active agent safe to a human body is deposited onto part or the entirety of the blood contact portion so that the medical instrument is fully primed by introducing liquid into the instrument without leaving fine bubbles adhered to the surface of the blood contact portion. Further, a method for fabricating a medical instrument is provided, comprising steps of assembling a medical instrument having a blood contact portion formed of a hydrophobic material, and contacting a liquid containing a surface-active agent safe to a human body to the blood contact portion, followed by drying, leaving the surface-active agent deposited onto the surface of the blood contact portion so that the surface-active agent is steadily and readily deposited onto the blood contact portion of hydrophobic material.

Abstract: The internal surfaces of a tank for liquids, for example a cargo tank or ballast tank of a ship, are coated by application of a metal plating composition to them by means of an applicator to form a metal layer at least 1 micron thick. The plating composition may be an electroless plating composition or an electroplating composition and is preferably thickened or gelled so that it is thixotropic or does not drip from downwardly facing surfaces.

Abstract: Arrangements are disclosed for an automatic mobile and components thereof together with a new mass transit system for said mobile wherein cost reductions, manufacturing simplicity and new methods of travel are obtained primarily through the use of Integrated Sub Systems, Symmetry, Remanufacturability, Transfusion Coatings, and an Automatic Transport Mode thereby resulting in elimination of large automotive assembly plants and the haulaway delivery industry with subsequent opening-up of competition which will allow new automotive industries to form with very minimal ini-investments.

Abstract: A reaction vessel comprising (1) a porous ceramic structure having intercecting, open pores and (2) silver metal coating the inner ceramic surfaces of the reaction vessel and filling the interconnecting, open pores to form a strong bond between the porous ceramic structure and the silver coating.The reaction vessel can be produced by(1) coating the inner surface and infiltrating the continuous, open pores of an unglazed porous ceramic structure (or vessel) with molten AgNO.sub.3 ;(2) decomposing the AgNO.sub.3 to silver metal; and then(3) repeating steps (1) and (2) until all the pores are filled with silver metal.

Abstract: The present invention provides a vascular biomaterial that includes expanded PTFE and a haemocompatible membrane covalently bonded thereto. Also provided is a process for making the vascular biomaterial that involves chemically modifying the surface of expanded PTFE to provide a surface partially covered with for instance, a hydroxyl moiety, and covalently bonding a haemocompatible membrane to the chemically modified surface of expanded PTFE.

Abstract: A process is disclosed for controlling the furnace temperature in a manufacture of phenolic resin-treated honeycomb structures from paper webs. The phenolic resin-treated honeycomb structures from the paper webs are, preferably, glued together and shaped to a body. Such body is immersed into a solution of a phenolic resin mixture and subsequently dried and cured in an indirectly heated furnace. The immersion and drying/curing steps may be repeated several times and take place at a temperature in the range of 70.degree. C. to 110.degree. C., except for the last drying/curing step, which takes place at a temperature in the range of 145.degree. C. to 155.degree. C. For controlling the temperature, the substances contained in an air mixture exiting from the furnace are preferably condensed and subjected to fractionated distillation with the temperature of the furnace preferably being adjusted, based upon the quantities of organic and/or inorganic compounds obtained.

Abstract: A method of impregnating the surface of a ceramic disk for use in a faucet valve to fill the pores of the ceramic plate and reduce the coefficient of friction between cooperating plates which control the fluid flow through the faucet valve. The plates are impregnated by subjecting the plates to a carburizing gas under heat over an extended period of time. The process causes a carbon matrix to fill the pores of the ceramic plate. Thereafter, the plates are lapped and polished to remove any excess deposits from the plate surface. The process forms a pair of cooperating plates for use in a faucet valve which eliminate sticking or lock-up of the valve assembly.

Abstract: A method for applying a dielectric material to a solar array having an edge, a light gathering side and a backside, which includes the steps of sealing the array along the array edge, providing a gas pressure differential between the light gathering side and the backside which pressure is greater on the light gathering side than on the backside and applying the dielectric material to the backside of the array wherein the gas pressure differential is sufficient to substantially prevent the dielectric material from leaking from the backside to the light gathering side.

Abstract: Plant for treating water from a first pipe to protect the internal walls of a pipework, including a storage tank (R) for powdered lime, a loop (2) for bleeding water from the first pipe (1), a lime saturator (S) located on the loop (2), and structure (3, 4, 5) for adding powdered lime from the storage tank (R) into the saturator (S). The loop (2) includes, upstream of the saturator (S), relative to the direction of water flow, a decarbonator (D) fed with water which is to be treated. A second pipe (6, 2) which connects the outlet of the saturator (S) with the first pipe (1) includes a loop (7) for recycling a part of the material from the saturator (S) to the decarbonator (D). The structure for adding powdered lime includes a pipe (5) which receives the powdered lime and which connects the outlet of the decarbonator (D) with the inlet of the saturator (S).

Abstract: A method of cleaning and coating water conducting pipes is provided wherein a mixture of water and compressed air is forced through the emptied pipe system to rough clean such system, a pressurized acid is introduced into the pipe system and allowed to react with the interior surface of the pipes for a predetermined period of time. The acid is then drained from the pipes, and the interior of the pipes is dried by compressed air. A pressurized liquid plastic is then introduced into the pipes to coat the pipes with the excess plastic being subsequently drained from the pipe system.

Abstract: A hollow fiber membrane type oxygenator is provided wherein a bundle of a plurality of hollow porous fibers presenting gas exchange membranes axially extends through a housing to define a first flow path for oxygen, a pair of partitions support the opposed open ends of the hollow fibers to isolate the open ends from the first flow path to define a second flow path through the fiber cavities for blood, and the micropores in the hollow fibers are filled with a silicone compound, for example, a RTV silicone rubber or a blend thereof with a silicone oil while the hollow fibers on their side wall are substantially free of a layer of the silicone compound. The oxygenator is manufactured by prefabricating an oxygenator module of the above-mentioned construction, impregnating the hollow fibers with a solution of the silicone compound, and passing a cleaning liquid to remove excessive silicone compound, thereby filling only the micropores with the silicone compound.

Abstract: A method is provided for reducing the force required to move a pipe through a J-tube attached to an offshore platform by coating the pipe with hydrophilic polymer and then moving the pipe through the J-tube, or by introducing a solution of hydrophilic polymer and water into the J-tube and then moving the pipe through the J-tube.

Abstract: Use of novel membrane crystal lattice structures with continuous pores as ultrafiltration membranes, gas separating organs and separating organs for ion exchange processes, structure for immobilizing molecules, and films as enveloping material for substances.

Abstract: A method for producing a fused silica envelope for use in a discharge lamp in which the inner surface of a fused silica tube is coated with a formulation containing titanium alcoholate and the coating treated by the steps including baking at a temperature of at least 1720.degree. C. to cause TiO.sub.2 to diffuse into the tube. The method results in a Ti concentration in a range of 1 .mu.m-10 .mu.m from the inner surface of the wall of the envelope is 0.5%-7% in terms of TiO.sub.2 and the product of the overall average Ti concentration and the thickness of the wall of the envelope ranges from 3.7% .mu.m to 42% .mu.m. During the baking step, the tube is shaped to include a bulb-like portion by inflating the silica tube.