Abstract: A covered roll is disclosed. Under an exemplary embodiment, the covered roll includes a roll core base, an under-layer formed of densely packed fibers and a covering layer. The under-layer, which may include straight and directionally oriented fibers, is infused with a thermoset resin and circumferentially surrounds the roll core base. The covering layer, which may be formed of a rubber, urethane, thermoset resin or other plastics, circumferentially surrounds the under-layer. The resin infused under-layer provides improved strength to the resulting covered roll and improves adhesion between the covering layer and the metal roll core.

Abstract: An apparatus and method for manufacturing a core or tube. The apparatus comprises a source of radiant energy and the adhesive used in the core or tubewinding process comprises an energy absorbing ingredient.

Abstract: Reinforced pipe obtained by winding, onto a tubular support based on a polymeric composition, of reinforcing tapes comprising an oriented polymeric composition in layers crossed at an equal but opposite angle relative to the axis of the pipe. The tapes are selected from those whose polymeric composition exhibits particular mechanical strength properties in tension.

Abstract: A sleeve for a print cylinder comprising a fiber reinforced, thin-walled material and having a seamless surface ready to be covered with a surface material. The sleeve may be used in flexographic printing, either as a support for photo-polymerized printing plates or rubber layers. The sleeve has the advantages of having low manufacturing cost and providing the necessary heat resistance to withstand rubber vulcanization temperatures. The sleeve is also airtight, and remains properly positioned during printing operations.

Abstract: Methods for forming double containment pipeline sections are provided where granular material is used to define the annuluses of such pipeline sections.

Abstract: An improved hose is used to install loose fill insulation. The hose includes projections extending from an inner surface which serve to condition the insulation as it proceeds through the hose and is dispensed. In a first embodiment of the present invention, the projections are formed so as to be perpendicular to a longitudinal axis of the hose. In a second embodiment of the present invention, the projections are formed so as to be angled, by an angle less then ninety (90) degrees with respect to the longitudinal axis of the hose. In a third embodiment of the present invention, the projections are formed with a serrated edge. In a fourth embodiment of the present invention, the projections are formed as part of a cap member which is disposed around the periphery of the hose.

Abstract: A method for making a hockey stick shaft by a double pressing process, and an apparatus for making the same. The double pressing process consists of pulling resin soaked rovings through heated mold cavities. A core is inserted between upper and lower rovings, the press is closed, and upper and lower laminates are molded on simultaneously, using heat and pressure. The hockey stick shaft made therefrom has two opposite surfaces, each of the surfaces being provided with a fiberglass roving reinforcement along each opposite edge and a graphite roving reinforcement fiber between the two fiberglass roving means.

Abstract: Very thin cast ceramic tape, preferably approximately 12 &mgr;m in thickness, is wrapped, preferably in a reversing spiral or helix, around a mandrel, preferably a mandrel made of steel and coated with a wax releasing agent, for so many times, preferably five or greater, as achieves a desired thickness of a tube wall, preferably about 100 &mgr;m. The green ceramic tube is then laminated in a pressure laminator, preferably a hydrostatic laminator at 3000 to 5000 psi, linking polymer chains between each ceramic layer, cross-linking polymer chains within each ceramic layer, and densifying the produced ceramic laminate tube by reducing porosity.

Abstract: The invention relates to a liner for producing a lining tube for carrying out sewer pipe renovation work, comprising at least one layer consisting of at least one tubular, resin-impregnated fiber band and a tubular film located on said at least one fiber band. The aim of the invention is to improve a liner of this type. To the end, a plastic film used for producing the tubular film has a reinforcement in the form of a nonwoven layer on the side facing towards the resin-impregnated fiber bands.

Abstract: A tubular member for an oil application device is formed separately and is fitted in such a manner as to cover a peripheral face of a porous cylindrical oil retaining member. The tubular member for the oil application device has a multi-layer structure including an inner layer and an outermost layer. The inner layer is a fibrous layer, and the outermost layer is a porous film. The porous cylindrical oil retaining member can be easily covered with, fitted with, and removed of the member for the oil application device, which is made from a fibrous layer such as a felt or from a porous film such as a PTFE film.

Abstract: A method and apparatus of forming coreless rolls of pressure sensitive adhesive tape involves the use of a mandrel assembly having a specific circumferential tape supporting segment thereon for winding tape. The circumferential tape supporting segment has a tape engaging surface portion that, in a radial orientation, is compressible yet sufficiently stiff to support the tape as it is successively wound about the mandrel to form a tape roll, and that is sufficiently pliant to permit ready axial removal of a wound tape roll from the shaft. The innermost wrap of pressure sensitive adhesive tape about the mandrel is masked by an adhesive liner. That liner is formed from one portion of a liner/tab segment which had been applied to the tape previously, and prior to winding, the tape is severed, and the remainder of that liner/tab forms an end tab on the outermost end of the previously formed coreless tape roll.

Abstract: A sleeve for a print cylinder comprising a fiber reinforced, thin-walled material and having a seamless surface ready to be covered with a surface material. The sleeve may be used in flexographic printing, either as a support for photo-polymerized printing plates or rubber layers. The sleeve has the advantages of having low manufacturing cost and providing the necessary heat resistance to withstand rubber vulcanization temperatures. The sleeve is also airtight, and remains properly positioned during printing operations.

Abstract: A method of forming sheet rolls made of a heat transfer recording sheet having a transfer ink layer on a surface of a base by winding the recording sheet around the outer peripheries of a plurality of cores. The method includes supplying a web heat transfer recording sheet, cutting a portion thereof corresponding to a region between two adjacent sheet rolls to form cut ends, placing a non-adhesive waste sheet and a pair of adhesive tapes attached to the waste sheet ends between the transfer recording sheet, the tapes having an adhesive portion, an outside-exposed portion, and a portion attached to a cut end of the recording sheet, winding the sheet around a core outer periphery, positioning the waste sheet between winding apparatus and a discharging portion, and cutting the waste sheet so positioned.

Abstract: The present invention generally relates to a multi-layered structure which for a given external geometry a section of interest may be integrally reinforced by varying the relative proportions of the layers in that section. That is, the layers making up the structure may have varying relative proportions to the structure's overall thickness between two or more positions while the structure maintains a constant thickness between the positions. By varying the relative proportions of the structure's layers, the mechanical properties of the structure may be selectively altered from a first position to a second position without altering the structure's external profile. This is especially desirable in composite sandwich structures used in aerospace applications which often require additional reinforcement at structural interfaces.

Abstract: The present invention broadly comprises a construction material constructed from a plurality of flexible strips, the strips are helically wound upon one another to form a cylindrical pole. The pole may incorporate bolts, nails, screws and polymers for securing the flexible strips to one another. The construction material is generally constructed from discarded tires and may comprise a utility pole, a guardrail, a signpost and may be suitable for many other construction applications.

Abstract: An apparatus and method for manufacturing a core or tube using radio frequency. When using aqueous-based adhesives, application of radio frequency allows for a much more efficient and much quicker method for drying and curing.

Abstract: The invention includes a method for producing a covered roll having a reinforcement fiber mat under layer infused with low viscosity thermoset resin and a smooth high temperature, high performance polymeric outer layer. The mat is formed of a plurality of layers, each layer having a leading edge that abuts a following edge when wrapped over the roll core, each subsequent layer being affixed to the previous layer along a seam, the seams being spaced apart angularly from one another to prevent irregularities over the surface of the resulting roll core. One or more layers of the dry reinforcement fiber mat may be formed of a two-ply construction, the first ply having fibers arranged in a random pattern, the second ply having aligned fibers oriented either parallel or perpendicular to the roll core central axis. The invention also includes an improved mold tape assembly for use in applying a polymeric cover over a roll core and an inventive apparatus for fabricating the mold tape assembly.

Abstract: A method for forming an absorbent article having an absorbent pad assembly with an outer fluid-contacting surface including discrete portions of different absorbency is provided. At least first and second absorbent pad materials are helically wound adjacently about a shaft member whereby at least a portion of each of the first and second absorbent pad materials includes an outer surface exposed portion.

Abstract: A sheet winding apparatus or a heat transfer recording sheet providing apparatus including the sheet winding apparatus, the sheet winding apparatus formed of a plurality of sheet winding devices arranged in multiple steps in a vertical direction. Each of the sheet winding devices includes (1) a plurality of holding/rotating devices, (2) a sticking apparatus for sticking adhesive around a number of outer peripheral portions of an unused roll shaft held by one of the holding/rotating devices, arranged in the direction of the unused roll shaft, and (3) a press roll that presses a sheet against an outer periphery of a roll shaft held by the holding/rotating device during the entire time that the sheet is wound around the roll shaft.

Abstract: Contoured structural members containing vibration damping mechanisms and methods for making the same. The contoured structural members comprise composite or metal materials sandwiching a support or stabilizing structure. The contoured structure can be provided by tube rolling (or roll wrapping) the composite or metal materials and the support structure together and then, if necessary, bonding them or connecting them. With a contoured and generally non-flat structure, applications for the structural members of the present invention are nearly limitless. As well, by incorporating a vibration damping mechanism, the structural impact of oscillations caused by varying mechanical loads is diminished.

Abstract: The invention relates to high-strength polyethylene fibers comprising mainly ethylene component having an intrinsic viscosity [&eegr;], when fibrous, of no less than 5, and have a strength of no less than 20 g/d and an elasticity modulus of no less than 500 g/d, and, in the measurement of the temperature variance of the dynamic viscoelasticity of the fibers, the &ggr; dispersion loss modulus peak temperature is no greater than −110° C. and the loss tangent (tan &dgr;) is no greater than 0.03.

Abstract: The disclosed method can manufacture a thick-walled cylindrical part of an excellent quality which is free from the interlayer separation, by using a fiber reinforced plastic composite material. The fiber reinforced plastic composite material having a small thermal expansion coefficient is laminated in the circumferential direction of a mandrel; the laminated fiber reinforced plastic composite material layer is heat-cured to form an auxiliary member of the mandrel; a plurality of sorts of fiber reinforced plastic composite materials having a different elastic modulus, respectively are laminated on the formed auxiliary member; and the laminated fiber reinforced plastic composite materials are all heat-cured.

Abstract: A method of manufacturing a wound insulator pipe, in particular for a high voltage insulator, having one or more ducts for conductors of any kind is provided. A laminate structure is achieved by winding a material onto a spindle and impregnating with a resin. Initially first layers of the material to be wound are applied; then at least one groove is made in the surface obtained and then the winding is completed until the final diameter is attained.

Abstract: A sheet roll forming system for forming sheet rolls by winding a heat transfer recording sheet around an outer periphery of a plurality of cores including a core supplying apparatus and a sheet roll discharge apparatus. The core supplying apparatus includes a cantilever shaft supporting the cores, a tray below the shaft and movable up and down in a direction of the shaft, and core stoppers on the tray where the shaft is an air shaft that can increase in diameter when air is supplied from a charge and exhaust apparatus. The sheet roll discharge apparatus includes the shaft supporting rolls of the recording sheet on the cores, a tray below the shaft, and a stopper on the tray.

Abstract: A method and apparatus for covering a roll core with a polymeric material, preferably a high performance thermoplastic material, is disclosed. The method includes first providing a cylindrical roll core having two ends, a length, and an outer surface. A spacer assembly is attached proximate one end of the roll core, the spacer assembly having a circumference greater than that of the roll core. After preheating to a desired temperature, the roll core is then placed within an apparatus in a substantially vertical orientation and held therein by suitable fixtures, e.g., opposed universal chucks. A length of mold tape is helically wound over the length of the roll core in a spaced-apart relationship therewith to define an application zone between the mold tape and the roll core outer surface. A filament formed of the polymeric material is extruded within the application zone and helically wound over the roll core outer surface so that the roll core is covered with the material.

Abstract: A flexible double-walled plastic tubing product includes a helically wound support bead between inner and outer walls, and an helically wrapped electrical resistance heating conductor is disposed adjacent to the inner wall in good heat transfer relation to fluid flow within the tubing product. Fluid flow within the tubing product is insulated against heat loss to ambient by the helical support bead and a trapped “dead-air” space between the walls of the tubing product. Apparatus and method for making the tubing product are disclosed.

Abstract: A separator cartridge comprises a support screen comprising a substantially rigid reinforced plastic cylinder including an inner first major surface and an outer second major surface, a first nonwoven polymer layer adhered to the inner first major surface of the support screen, a second nonwoven polymer layer adhered to the outer second major surface of the support screen, and a polymeric screen contacting and frictionally engaging the second nonwoven polymer layer, the polymeric screen including a hydrophobic coating. The invention also contemplates a process for preparing the separator cartridge.

Abstract: A pipe and method of manufacture of the pipe are described. The pipe comprises a core of helically wound steel strip embedded in a plastics material matrix and lined with inner and outer linings of filament wound fiber reinforced plastics material.

Abstract: The invention relates to a fishing rod with preinserted fishing line guide members. A prepreg formed of a high-strength fiber impregnated or mixed with resin is wound to form the rod pipe. A plurality of wide fishing line guide members each having a flat-shaped section are fixed integrally to the inner peripheral surface of the rod pipe, the inner peripheral side portions of the wide fishing line guide members are respectively projected inwardly from the rod pipe inner peripheral surface, and the outer portions of the rod pipe existing in the wide fishing line guide fixed portions are respectively bulged outwardly and widely. The fishing line guide members are strongly fixed to the inner peripheral surface of the rod pipe without lowering the strength of the rod pipe.

Abstract: The present invention is directed towards a wound golf ball that includes a wound core surrounded with a cover material. The wound core is formed of a fluid-filled or solid center, and at least one wound layer segment surrounding the center. The wound layer segment includes a first untreated portion, a first impregnated portion, a second untreated portion and a second impregnated portion. The first impregnated portion is impregnated with a first material, such as latex. In one embodiment, the wound layer segment is formed of two layers, each having an untreated and an impregnated portion. Thus, the multi-layered wound layer segment has an impregnated portion between two untreated portions.

Abstract: The disclosed method can manufacture a thick-walled cylindrical part of an excellent quality which is free from the interlayer separation, by using a fiber reinforced plastic composite material. The fiber reinforced plastic composite material having a small thermal expansion coefficient is laminated in the circumferential direction of a mandrel; the laminated fiber reinforced plastic composite material layer is heat-cured to form an auxiliary member of the mandrel; a plurality of sorts of fiber reinforced plastic composite materials having a different elastic modulus, respectively are laminated on the formed auxiliary member; and the laminated fiber reinforced plastic composite materials are all heat-cured.

Abstract: A method and apparatus for manufacturing tubular articles from fiber reinforced thermoplastic sheets. A horizontal conveyor feeds the sheets to a vertical wrapping belt. The sheets are heated on the conveyor to a molten state and fed to a mandrel rotated by the belt. The molten sheets are wrapped around the mandrel and cooled by the action of the belt to form an integral structure.

Abstract: A multiple ply composite structure used to reinforce, seal and shape concrete structures has a first ply formed of unidirected continuous filament reinforcements which are bonded together by a thermosetting polymeric resin matrix. A second ply comprises a plurality of separately spaced protuberances, each of which is individually coated with a hardenable thermosetting polymeric resin. The hardenable thermosetting polymeric resin of the second ply bonds the first ply to the second ply by forming a concave resin meniscus which anchors each of the protuberances of the second ply to the first ply.

Abstract: A tubular film for fixing a unit of an image forming apparatus includes a rib portion as an engage portion at its one end. For forming the rib portion, a groove is provided at an end of a cylindrical member, as an inner mold, and/or a tubular mold member as an outer mold, and a film to be the rib is rolled along the groove.

Abstract: Methods for making linear acoustic antennas designed to be towed behind a boat, wherein open-cell foam cylinders (101) are opened lengthwise (103) and electroacoustic receiver modules (101) are placed therein. After closing the cylinders, they are arranged end-to-end and a series of layers of porous nonwoven material, reinforcing nets (111) and wiring cables are wound around the cylinder surfaces. Finally, a protective sheath is extruded onto the cylinders and their end portions are joined together. The manufacture of such antennas may thus be mechanised using cable technologies.

Abstract: A hollow and cylindrical laminated molded product which is constituted by mutually overlapped joining of edge sides in a longitudinal direction of at least one or more elongated laminated articles formed by layered lamination of fiber-reinforced thermoplastic resin plates containing reinforcing fibers of not less than 30% and not more than 85% in volume content, and a method of producing the above-mentioned laminated molded product using a simple molding tool.

Abstract: A method of forming a hollow elongated or tubular body consisting of the steps of winding one or more strips of material in self-overlapping fashion to produce a multi-layer tubular structure, the or each strip prior to winding being pre-formed to provide a transverse cross-section having at least one step which, in each convolution of the strip accommodates the overlapping portion of the next convolution.

Abstract: The present invention refers to a method of producing a tubular lining ho in particular for use in sewer reconstruction work, comprising the steps of forming at least one fibrous strip into a curable, resin-impreganted hose. The inner side of the resultant lining hose is provided with a protective foil. It is the object of the present invention to provide a method of producing a tubular lining hose with the aid of which hoses of arbitrary length can be produced in a simple manner. This object is achieved by producing first a foil hose, which forms the protective foil, by helically winding a foil strip onto a winding mandrel, the fibrous strip being then wound onto said foil hose. In addition, the present invention refers to apparatuses for carrying out said method as well as to the lining hose itself.

Abstract: A manufacturing method of combining wires and fibers to fabricate fiber reinforced composites is disclosed. The fibers are drum wound on an adhesive-coated substrate followed by coating with a barrier layer to preserve the fiber spacing. A layer of the adhesive material is then applied to the fiber wrap and wire is wound therearound. A series of increasingly viscous tacky materials can then be applied to the wire wraps so that all gaps between the wires are filled. The inventive method can be used to form standard wire/fiber preforms, variable spacing wire/fiber preforms, ring preforms and wire only preforms which can be processed into fiber reinforced composite materials.

Abstract: A filter element (10) comprises a porous, thick-walled, integral, self-supporting, resin impregnated and bonded fibrous, tubular filter structure (11) having a hollow core (15); an inner shell (20) of a first large pore size porous media adjacent the hollow core and forming the majority of the filter structure; and an outer shell (21) of a second small pore size porous media, finer than the first porous media and adjacent the inner shell, the first and second porous media being resin impregnated and bonded.

Abstract: A method is provided of manufacturing an easy-open container. A bodywall layer strip is positioned on a wider liner layer strip to define first and second edge portions on the side of the wider liner layer which extends transversely beyond the bodywall layer side edges. These layers are fed to a mandrel and the first liner layer edge portion is folded-over onto an outside surface of the bodywall layer and a high strength bond is formed therebetween. The resulting layers are spirally wound on the mandrel to form a continuous tube having a spiral seam with the bodywall layer side edges forming a butt joint and with each of the first and second liner layer edge portions extending through the butt joint and out of the spiral seam. The second liner layer edge portion is positioned on the first folded-over liner layer edge portion and a low strength bond is formed therebetween. A flexible label layer is spirally wound onto the tube on the mandrel with its longitudinal edges in overlapped relationship.

Abstract: A method of manufacturing a composite material in the form of an annular tube by winding on a mandrel both a reinforcing fiber fabric and a sheet of matrix material, comprising the following steps: 1) preheating the mandrel to a predetermined temperature; 2) fixing the reinforcing fiber fabric and the sheet of matrix material to the mandrel; 3) causing the mandrel to rotate at a nominal speed to wind the fabric and the sheet simultaneously, the fabric and the sheet being subjected to a nominal tension; 4) actuating heating means for heating the material and cooling means for cooling the mandrel; 5) when the tube reaches the desired diameter, stopping both the heating means and the rotation of the mandrel; 6) after a determined duration that is sufficient for; bringing the temperature of the mandrel to the predetermined preheating temperature, stopping the cooling means; and 7) dismounting the mandrel.

Abstract: A hybrid composite structure is formed from layers of gore strips (12), polymeric matrix composite (71) comprising a resin impregnated slit tape or tow, and a central honeycomb layer formed from a plurality of rectangular sections (72). The first two steps include forming a plurality of the gore strips and providing a mold, or lay-up mandrel (10). Thereafter, a first set of gore strips is applied to the lay-up mandrel to form a first gore strip layer. Subsequently, the composite material in form of resin impregnated slit tape or tow is applied to the first gore strip layer to form a first composite material layer. Next, a second set of gore strips is applied to the first layer of polymeric matrix composite, opposite the first gore strip layer, to form at least one other gore strip layer. This creates a first sandwich structure having gore strips as the first and last layers of the structure. Thereafter, the layer of honeycomb material is applied to the last layer of the first sandwich structure.

Abstract: A method of making an article from a fiber reinforced polymer composite material including the steps of providing at least two mandrels, wrapping at least one of the mandrels with a first layer of a fiber reinforced polymer composite material, disposing the at least two mandrels in a predetermined orientation, wrapping a second layer of a fiber reinforced polymer composite material around the mandrels, and curing the wrapped assembly.

Abstract: A tape is adapted to be secured to a container or other object which when removed therefrom causes the display of a message which was formerly not visible, such as a notification that the object has been tampered with, the tape being provided on one surface with an adhesive layer so that it can be attached to the object and provided on its opposite surface with a release layer so that it can be wound upon itself and readily dispensed without having to remove a protective liner therefrom, the message displayed by the tape both when initially secured to said object and after removal therefrom being located on said one surface of said tape, whereby said tape may be readily and inexpensively manufactured and readily dispensed from appropriate mechanical equipment in large quantity applications.

Abstract: A fiber reinforced plastic pipe comprising a cylindrical inner layer formed by winding a prepreg sheet containing a thermosetting resin as a matrix and an outer layer formed by winding a thermoplastic resin sheet or tape around the inner layer, said inner and outer layers being heat cured and thermocompression bonded in one united body; and a process for manufacturing the fiber reinforced plastic pipe. When the fiber reinforced plastic pipe is manufactured, the thermosetting resin is used for forming the inner layer and the thermoplastic resin is used for forming the outer layer. Moreover, a metal coat can be firmly bonded to the surface of the outer layer. Hence, a fiber reinforced plastic pipe prominently improved in impact resistance, abrasion resistance and lightweight properties can be provided.

Abstract: A golf club shaft having a high modulus of elasticity in the grip end of the shaft to enhance stiffness, and a low modulus of elasticity in the tip end of the shaft to provide flexibility, and a method of manufacturing such a golf club shaft is disclosed.

Abstract: A disposable diaper of pants type having front and rear bodies bonded to each other by series of welded zones along transversely opposite sides of front and rear waist sections, wherein the welded zones are at least partially defined by patterns of V-shape or patterns of V-shape being devoid of a sharp point, both laid down transversely of the diaper, or patterns of an arc opening transversely of the diaper.

Abstract: A frame, a drive mechanism for rotating a mandrel, at least two spindles mounted to the frame, a tensioner, and a belt extending between the first and second spindles may be used to roll pre-preg strips or similar sheets of composite materials around the mandrel. The belt over the spindles, and the spindles guide the belt through changes in its direction of travel. The mandrel is mounted in the drive mechanism in contact with the belt, which changes its direction of travel around the mandrel. The lower surface of the belt bears against portions of the spindles, and the mandrel contacts the upper surface of the belt. As the drive mechanism rotates the mandrel, pre-preg sheets are fed between the mandrel and the belt and are thereby wrapped around the mandrel. The belt presses the pre-preg sheets against the mandrel. The wrapped mandrel may then be removed from the apparatus and cured in any suitable manner known in the art to produce a composite tubular article.

Abstract: A frame, a drive mechanism for rotating a mandrel, at least two spindles mounted to the frame, a tensioner, and a belt extending between the first and second spindles may be used to roll pre-preg strips or similar sheets of composite materials around the mandrel. The belt travels over the spindles, and the spindles guide the belt through changes in its direction of travel. The mandrel is mounted in the drive mechanism in contact with the belt, which changes its direction of travel around the mandrel. The lower surface of the belt bears against upper portions of the spindles, and the mandrel contacts the upper surface of the belt. As the drive mechanism rotates the mandrel, pre-preg sheets are fed between the mandrel and the belt and are thereby wrapped around the mandrel. The belt presses the pre-preg sheets against the mandrel. The wrapped mandrel may then be removed from the apparatus and cured in any suitable manner known in the art to produce a composite tubular article.