Joining a plurality of superposed fibrous or textile layers

A dialyzer cartridge includes a resilient gasket defining a central hollow area, and first and second cross members affixed in and extending between the interior side walls of the gasket to divide the hollow area into first, second and third portions. The ends of a plurality of hollow fibers are embedded...     

A one-piece molded tennis racket or similar article constructed of resin-impregnated fabric consisting essentially of a plurality of substantially continuous fibers some of which extend from the butt of the handle, around the head frame and back down the handle, and other continuous fibers which extend...     

A protective helmet having an internal integral layer of reflective material and the method of constructing the same is disclosed. A first layer of catalyzed clear gel coat is sprayed under pressure into a helmet mold and allowed to dry. A second fog layer of clear gel coat is sprayed over the first...     

Method and apparatus for producing glass fibre reinforced plastic pipes and the like wherein a rotatable hollow mould form is provided, an elongated roll of reinforcing fibres is located on holding means which are placed in the concavity of the mould, spaced from the sides of the mould, the mould is...     

A flexible diaphragm with a U-shaped surrounding fold, containing a plurality of reinforcing fabric members of cross-shaped configuration cut from an elastomer or other suitably coated sheet of material of woven fabric in which the threads are in right-angled relation, each of the cut members having...     

In moulding the tread portion of a pneumatic tire to have a breaker structure incorporated therein the breaker is built in an annular mould cavity to have a radially outermost 90.degree. ply consisting of parallel cords extending axially of the cavity, and uncured rubber is introduced into the cavity...     

A laminate of plaster reinforced with a monofilament, continuous strand, glass fibre, preferably in the form of a mat. The laminate can be made flexible by subjecting it to stress, such as by rolling it to cause flexion.

A laminating material such as a fibrous glass formed as a woven fabric or chopped strand mat which has been coated with a plastic resin on both sides thereof. The plastic resin is applied so that it does not permeate the fibers of the reinforcing material but is only adhered on the surfaces thereof....     

A multi-ply fibrous material is provided which is suitable for use as a wipe, swab, or sponge and which comprises a backing layer and at least one liquid absorbent layer. The backing layer is made of compactly assembled natural wood pulp fibers, bonded to each other with an adhesive binder to provide...     

Self-extinguishing laminates are made by an improved process, wherein individual layers of a carrier material are impregnated with a thermosetting phenolic resin containing a flame-retardant agent and the impregnated layers are placed one above another and bonded together by compressing them at elevated...     

A composite fabric comprises a layer of pile-forming material such as a textile bonded to a substrate material by an interlayer of plastics material which is substantially air-free. The interlayer has a density in the range 0.9 to 1.5 gm/cc and the substrate is a slab of deaerated plastics material having...     

In a convoluted-membrane type diffusion device for blood, such as a blood oxygenator, in which the membrane is supported by a stiff, folded, integral backing having port means for fluid flow therethrough. The backing is provided with laterally positioned tabs on each edge thereof, the tabs being folded...     

A tennis racket frame is constructed primarily of an elongated hollow tube member having a wall thereof consisting essentially of a plurality of concentric layers of high tensile strength fibers impregnated and bonded together by binder resin, at least two of the layers being helical windings of opposite...     

Method of making a casing reinforced by a stretchable glass fiber preform is disclosed. The casing may be reinforced by metal or a glass fiber mat which is shaped to provide positive engagement with the stretchable fiber preform before its impregnation by a matrix-forming resin.

A novel method is disclosed for the manufacture of a hollow graphite-epoxy structural part with high composite density and using tooling that eliminates the necessity of autoclave and similar high external pressure curing equipment. The method of manufacture in part involves the use of a rigid hollow...     

A composite module having a rigid foam core encapsulated in a shell of reinforced cementitious material. The shell is reinforced with at least two types of material, the first being a fiber reinforcing material distributed in an interconnected random matrix substantially throughout the shell and the...     

The present blood exchange apparatus comprises a plurality of main layers acked to form a package. Each main layer includes a membrane envelope enclosing an intermediate netting layer. Spacers space the main layers so that blood may flow between adjacent main layers and an exchange liquid may flow within...     

A method of making a composite structure upon a solid former having a low melting point, comprises placing the former together with the laid-up composite within a mould, raising the temperature of the mould such as to melt the former and expand it such that it consolidates the composite within the mould.

A fiber-reinforced composite vehicle wheel, and a method and apparatus for construction thereof. The wheel comprises a disc portion having reinforcing fibers in substantially random orientation disposed predominantly in planes perpendicular to the wheel axis, and a rim portion having directional first...     

The method comprises taking textile or synthetic threads and impregnating the threads by passage in a bath of an elastomer or plastomer material. Thereafter a band is formed from the impregnated threads and shaped into a ring and moulded under pressure.

A method of constructing a fiberglass structure features that enable a gelcoat protective layer to be applied to an article formed in an automatic process. In the process, a web of fiberglass is drawn through a bath of structural resin to impregnate the fiberglass with the structural resin. A web of...     

Two small diameter fiberglass tubes are rolled on silicone rubber slugs and inserted into a larger cylinder which is then pinched into a figure-8 shape. This is put in the curing mold. When heated the silicone rubber expands to push the fiberglass into contact with mold surfaces. After cooling the slugs...     

A fiber-reinforced composite vehicle wheel, and a method and apparatus for construction thereof. The wheel comprises a disc portion having reinforcing fibers in substantially random orientation disposed predominantly in planes perpendicular to the wheel axis, and a rim portion having directional first...     

Bubble- or void-free electrical laminates such as unclad or metal clad laminates are produced by impregnating a porous fibrous substrate with a solvent-free liquid resin capable of curing to a rigid state without producing a volatile by-product, combining a plurality of impregnated substrates to form...     

Method of manufacturing a tone arm by superposing a sheet of graphite flakes bound with resin, on a carbon fiber prepreg, winding the resultant double layer product around a core, heat-hardening the resultant assembly, and removing the core to form a pipe-shaped tone arm.

A sculptured lamp base suitable for electric lamps is provided by utilizing a tightly-wound spiral of corrugated cardboard strip which is distended along a dimension parallel to its axis through forming upon a mold. The resulting sculptured lamp bases are capable of an infinite variety of shapes. Various...     

A method of making a mask which comprises molding a sculptable material, affixing the said molded material to a facial form to the desired contours of the mask, which contours are different than the contours of the form, applying wetted strips of plaster-impregnated gauze to the molded material, drying...     

A method of making a thermal-insulating panel for use in an electric furnace. A refractory fiber mat is formed in a felting box from a suspension of discrete refractory fibers plus an inorganic bonding agent. The modules have a hot face, a cold face and a plurality of side faces. A plurality of individual...     

Wind generator apparatus employs an induction generator with a wind-driven rotor. Connection of the induction generator to AC power lines is controlled by apparatus that compares generator rpm and line frequency. The rotor blades have a pretwisted, varying-chord inboard portion and an untwisted, constant-chord...     

The invention concerns a hollow fibre separatory device. The opened ends of the hollow fibres are situated in a plane which is at an acute angle relative to the axes of end sections of the fibres. A reservoir is provided which defines a fluid flow passage leading across the open ends of the fibres from...     

A method of making hollow, fiber-reinforced resin articles having a resin-rich interior coating is disclosed. The interior coating provides a chemically resistant surface and inhibits wicking of fluids through the sidewall of the tank which tends to degrade the resin. The coating is formed by positioning...     

A piston composed at least in part of fiber-reinforced synthetic resin material, is provided with a piston base or bottom, a piston shaft or shank, and eyes for engagement with a member to be driven by or for driving the piston. According to the method of this invention, the piston bottom and piston...     

An improved non-metallic sprocket, such as the phenolic laminate type, one improvement consisting of sprocket teeth molded from continuous layers of material laminated in a corrugated, sprocket tooth forming construction about the periphery of the sprocket. Another improvement consists of the inclusion...     

A composite fiber reinforced propeller and a method of making the propeller using reinforced fiber. The propeller having the fiber wound along the length of the propeller blades and through the hub for strengthening the propeller so light-weight plastic material or the like can be used in the molding...     

In the fabrication of composite articles, a binder containing hydroxymethylfurfural is employed.

A forming tool made from resins and fillers for the cold forming of sheet metal and especially suitable for forming short runs of sheet metal parts with drop hammers, hydraulic presses or mechanical crank presses, the filler being a mixture of iron filled resin and an aggregate; the aggregate being a...     

Improved surface characteristics of sheet molding compounds are obtained by employing defined amounts of resin, glass and filler in the formulation comprising the appearance side and the reinforcing side of molded objects.

A cushioning material, comprising a lower filament cushioning layer of relatively high rigidity and high perviousness to air obtained by compression molding in a stated shape three-dimensional curled short fibers of polyester filaments of a relatively large denier number thereby producing a shaped mass...     

A plastic hockey-stick is made in three layers, around a core. The blade-core is retained but the handle-core may either be retained or withdrawn during manufacture. The inner layer is of hoop-laid strands, which gives rigidity to the cross-sectional shape of the handle, enabling the handle to be hollow....     

A method of molding a composite material comprising reinforcing fibres enclosed in a resin matrix. Layers of the resin impregnated fibres are laid-up in a suitably shaped die whereupon the laid-up layers are overlaid by a silicone rubber member which generally corresponds in shape with the die. Hydraulic...     

Fiber-reinforced materials are produced by a process in which a heat-stable thermoplastic aromatic polyether A which contains reactive groups, preferably nitrile groups and/or sulfur bridges and/or arylthio or alkylthio groups, if necessary together with a heat-stable thermoplastic polymer B which does...     

A plastics composite of fibres in a thermoformable matrix is formed by contacting the composite with a sheet of metal and deforming the metal plastically. The thermoformable matrix may be thermoplastic or thermosetting and the metal may be superplastic. The matrix may be deformed between the sheet and...     

A method of moulding composite materials in which prepregs of resin impregnated filaments are interposed between a shaped partially contained polytetrafluoroethylene body and a die. The assembly is heated to cause the polytetrafluoroethylene body to thermally expand and compress the prepregs against...     

A non-metallic leaf spring in which a unitary body member is made up of strands of glass fibers distributed in a matrix of polymerized epoxy resin. The spring is provided with end fittings and a mounting assembly intermediate the ends of the spring by which the spring can be mounted between suspended...     

A composite cover having high load-bearing capacity comprising an upper and a lower skin of fiber-reinforced plastic material, the upper and lower skins being integral with one another around the edges of the cover and spaced apart from one another therebetween, the space so formed containing reinforcing...     

Non-slip properties are imparted to molded plastic articles by adhering a layer of latex or a latex-impregnated sheet material onto the surface of the molded article. Preferably, the latex layer is applied prior to thermoset curing of the molded article and is adhered to the thermoset article during...     

A method of making a ballistic helmet and a helmet made by the method in which each of the plies making up the body is formed from a hexagonal blank cut from ballistic cloth and provided with slits extending from the apices thereof toward the center to form a central area and segments extending from...     

A flexible rubber boot that transmits molding pressure to the inner surface of the structure to be molded is placed on a support fixture. The boot is held in place by a vacuum applied between the fixture and the boot. Prepregs are laid up on the boot to the desired depth and in a desired configuration....     

The present invention provides a fiberglass composite which possesses outstanding armor properties. This ballistic resistant composite material employs a high strength magnesia aluminosilicate glass fabric and a prescribed phenol formaldehyde condensation product as the matrix resin. The composite is...     

A moldable fibrous composite having thermal and acoustical insulating characteristics and methods of production thereof are provided. The composite structure comprises a substrate, a middle layer and a non-woven top layer. The substrate may be in the form of a fibrous web or, alternatively, a thermoplastic...     

A method of making a boat comprises moulding a hull (6) with an external longitudinal recess (7), securing a folded inflatable bag (8) within the recess, and fitting a cover (9) into position over the recess such that it can be blown clear thereof when the bag is inflated to provide buoyancy during an...     

Fiber reinforced thermoplastic articles having an improved surface are produced in a stampable sheet which is produced from a reinforcing fiber mat having a thermoplastic support film.

A molding process of a molding compound containing an ingredient such as a binder, e.g., pitch or a thermosetting resin which generate gas before being set, is disclosed, wherein the molding compound is heated and molded under pressure according to a special temperature pattern. First, the molding compound...     

A method of consolidating a tubular composite article of polymeric matrix material and fibrous reinforcing material, comprising enclosing a length of the tubular composite article in a tubular protective member and advancing the protective member to carry the length of the article thus enclosed through...     

Disclosed are interleafed fiber-reinforced thermoplastic composites formed by introducing a ductile interleaf block copolymer layer to a fiber-reinforced thermoplastic layer. Also disclosed are methods for producing such composites. These composites are useful in numerous applications where toughness,...     

The invention relates to a fibre-reinforced thermoplastic semi-finished product includes a thermoplastically processible polymer and long individual reinforcing fibres which form a coherent skeleton, which product can be processed in stamping presses to give moulded articles having a very high surface...     

Consolidation of thermoplastic composite panels in a platen press is facilitated by the positioning of resilient pads between the platens and the composite to be consolidated.

A method of making molds which is easy, quick and can be accomplished at room temperatures and atmospheric pressures. The method includes applying at least one layer of gel to a male mandrel and curing at least one layer of polyester impregnated fabric to the gel layer. At least one layer of epoxy impregnated...     

A method and apparatus is disclosed for the production of a multi-ply sheet product in which separate non-woven fibrous webs are combined into a multi-ply sheet before embossment, embossed as a multi-ply sheet, the embossed webs separated from one another and longitudinally displaced relative to one...     

A seat support for a vehicle including a combination beam interconnected with the vehicle at one end and having a seat mounted on its opposite end. The combination beam includes longitudinally extending load support members of relatively high modulus of elasticity spaced from each other along at least...     

A bicycle frame of streamlined and aerodynamically shaped tubular members has the form of two open triangles with a common side. The entire frame may be formed as one continuous unit with a plurality of hollow junctions each common to two or more members for supporting a front wheel assembly, a pedal...     

A method of producing glass fiber mat reinforced plastic panels having at least one smooth appearance surface in a set of two matched mold members having interior mold surfaces defining a mold cavity contained therein of which at least one interior surface is the mirror image of the appearance surface...     

A headliner for mounting in the passenger compartment of a vehicle is formed from a plurality of layers of materials including foamed polyurethane, fiber glass, scrim and remay. The layers are bonded together under heat and pressure which cures an incorporated adhesive.

Disclosed is glass fiber reinforced thermoplastic sheet material suitable for various compression molding applications. The glass fibers useful in this invention are described in detail, and the thermoplastic composition is poly(ethylene terephthalate), poly(cyclohexylene dimethylene terephthalate) or...     

A method for incrementally mold-forming sections of a fiber reinforced, thermoplastic material into a composite product which has a mold product configuration of non-uniform cross section and/or non-linear configuration. Large laminates are formed by utilizing small to medium sized molds to successively...     

A seat support for a bicycle including a combination beam interconnected with a bicycle frame at one end and having a seat mounted on its opposite end. The combination beam includes longitudinally extending load support members of relatively high modulus of elasticity spaced from each other along at...     

In a curtain wall of metal-stud-frame type in which a metal frame is attached to the back surface of a concrete panel through a flexible anchor, a self-supporting type solid, knitted goods formed by knitting fibers in three dimensional directions with a pitch between each fabric exceeding 5 mm is buried...     

A method for curing fiber-reinforced resin matrix composite materials (22) includes the steps of providing a form (14) and positioning uncured composite material (22) on the form (14) substantially into a desired shape. The composite material (22) is then cured by providing a fluid bath (10) heated to...     

A method of fabricating structures formed from composite materials by positioning the structure about a high coefficient of thermal expansion material, wrapping a graphite fiber overwrap about the structure, and thereafter heating the assembly to expand the high coefficient of thermal expansion material...     

A dual charge compression molding method in which a first charge of a plastic material that will at least constitute the reinforcing means, i.e., the ribs and/or bosses, is first placed in the mold and compressed, the mold is then opened and a second charge of the plastic material is placed in the mold...     

A hard roll is produced by a process utilizing the steps of winding a fiber material impregnated with a thermosetting resin around the outer peripheral surface of a metal roll core to form a fiber-reinforced lower winding layer, then injecting a thermosetting synthetic resin material into a mold of predetermined...     

A method of producing integral articles such as rudder parts etc. of plastics, reinforced with relatively long, continuous fibres is described. During the hot-setting or thermoforming process pressure is applied along at least two co-ordinate axes, with an angle between them of 30.degree. to 90.degree.....     

A method of manufacturing a piston for transferring an output force to a member in responsive to pressurized fluid being communicated to a bore in a housing. The piston has a cylinder body made of a plurality of triaxial braided layers of carbon fibers which are placed on a mandrel with spacers located...     

A bicycle frame manufactured of one or more continuous fiber composite tubes, wherein the tubes are joined to one another without lugs by overlaying the joints with resin impregnated continuous fiber composite material and clamping the joints in static pressure molds. Gussets are integrally formed as...     

A method of making a fiber-reinforced molded racquet frame includes placing at least one core having a tube with at least one layer of woven reinforcing fibers in a mold shaped to define the frame. A plastics material is injected into the mold around the core or cores. The plastics material preferably...     

A method of molding a hollow fan blade in which a preform (preferably constructed of glass fibers) is used to support the upper multiple layers of to-be-impregnated cloth within a mold. As resin is injected into the mold, the cloth and the preform become impregnated thereby bonding the two together to...     

A method of joining the ends of a papermakers fabric wherein machine direction yarns are fringed out at the fabric ends, yarn ends being laid across a pinned plate, and yarn ends being cut back so as partially to overlie the plate. Those yarns which extend across the plate are folded back to form loops...     

A continuous forming method is provided here whereby long composite structural shapes such as "Z", "HAT", "L", etc. can be formed economically with relatively small equipment. First, a lay-up is made from unidirectional tape or woven cloth, then the material is heated to accommodate softening of resin,...     

A process for manufacturing a ski, and a ski manufactured by the process. The process according to the invention includes at least the following steps for manufacturing a ski whose body includes a core covered with a shell, wherein the shell is a composite sub-assembly: positioning the sub-assembly adjacent...     

A process of applying catalyzed resin through a vacuum bag onto a dry hand lay-up uses at least one resin reservoir with a valve nozzle thereon. The valve nozzle is placed between the lay-up and the vacuum bag. By lifting the resin reservoir connected to the valve nozzle, the catalyzed resin placed in...     

A bicycle frame having separate tubes made of composite material and joined to each other in the region of the crank axle bracket with a coiled band also made of composite material. This solid coiled band arrangement, which joins together the saddle frame tube, the lower frame tube and the rear fork...     

The present invention relates to a method of manufacturing low-edge V-belts including the steps of: forming an unvulcanized belt annular body inside out by winding respective components constituting the elongated portion, tension-resistant portion, and compressed portion of the belt in laminated form...     

A fishing rod is manufactured by forming a tubular small diameter portion on an outer surface of a rod material. The small diameter portion is formed continuous with and between a pair of walls substantially perpendicular to an axis of the rod material. Then a seat base is formed by placing a pair of...     

An implement handle includes an axially elongated core member having a varying cross-sectional outer dimension, and an outer polymeric shell having axially-oriented substantially-continuous strength members, the outer shell enclosing and being bonded to the core and of substantially uniform thickness....     

A method of progressively molding and curing/homogenising a composite material component assembly including a skin panel and a series of spaced structurally reinforcing members therefor. The method includes the steps of placing a composite material layer (18) on support (13), clamping same to the support...     

A method for forming stabilized preforms for complex composite articles is disclosed using a solid meltable uncatalyzed thermosetting resin as the stabilizing agent. The resin is applied to each layer of the preform and heated to melt the resin and bond the layers together. After cooling, the resin resolidifies...     

A process for producing a carbon fiber facsimile (20) from a master model (16), wherein layers of epoxy impregnated carbon fiber weave (52) are applied to the surface of master model (16), a pressure pad (26) having a first surface with topography substantially complementing the surface topography of...     

This invention relates to a process for preparing thermoplastic composites .e. laminates from a plurality of individual plies of thermoplastic resin prepregs. The prepregs are formed into composites under two substantially concentric vacuum chambers. High temperatures and low consolidating pressures...     

The present invention provides a pipe-shaped structural member made of fiber reinforced plastics or fiber reinforced rubber utilizing the mechanical property of the material as an anisotropic material. Since the angle of the fibers and/or direction of orientation are made partially different in the circumferential...     

Pultruded profiles are manufactured as a die station which is fed with resin via a pump. The core of the profile is formed by granular material fed to station from a hopper through the interior of a hollow duct which is essentially vertically disposed, above the station, so that the granular material...     

A cycle frame includes an upper tube joined at one end to a lower tube by a frontal part and joined at an opposing end to stays by a continuously formed connecting part. A front fork pivot housing is attached to a reduced thickness, core portion of the frontal part and a seat post housing, having a forked...     

A sound dampener for a disk brake assembly comprising a composite of vinyl ester and glass. Preferably, the composite is comprised of a region of woven glass sandwiched between a layer of vinyl ester and another layer of vinyl ester in which random strands of glass are embedded. The composite dampens...     

A baseball bat having a fiber reinforced outer layer which is formed by a resin injection technique employing a continuous reinforcing fiber and a molding material which cures to provide a crosslinked polyaminoamide resin, a crosslinked epoxy-modified polyaminoamide resin or a crosslinked polyesteramide...     

A resin reservoir particularly adapted for use with a resin transfer molding process. This reservoir comprises a pressure yielding porous sponge containing about two to about ten times the sponge's weight in resin. The reservoir is used in a resin transfer molding process. The process comprises applying...     

A golf club head is formed with a ball impacting face having an outer layer of wood veneer bonded to an inner layer of synthetic resin reinforced fibers by a synthetic resin which impregnates both layers. In a wood-type version of the club head, the outer shell is formed over a molded foam plastic core...     

The present invention provides a pipe-shaped structural member made of fiber reinforced plastics or fiber reinforced rubber utilizing the mechanical property of the material as an anisotropic material. Since the angle of the fibers and/or direction of orientation are made partially different in the circumferential...     

A method of making a fiber-reinforced ceramic matrix composite of complex shape by first rigidifying a fibrous arrangement made of woven or braided material by impregnating with a preceramic resin, and then curing and pyrolyzing the resin to form a rigid or stiff preform. The rigid preform is then densified...     

A sound dampener for a disk brake assembly comprising a composite of vinyl ester and glass. Preferably, the composite is comprised of a region of woven glass sandwiched between a layer of vinyl ester and another layer of vinyl ester in which random strands of glass are embedded. The composite dampens...     

A new class polyimide and polyimide precursors based on diaryl oxyalkylene diamines, such as 1,3-bis[4-aminophenoxy]-2,2-dimethyl propane, a process for their preparation and their use as the continuous phase for the manufacture of composites and composite laminates reinforced by reinforcing agents such...     

An eight ply surgical wrap used for wrapping over and around a bandage to secure it in place, after it has been applied to a patients limb. The surgical wrap is formed from a single ply gauze fabric which is first bleached and washed, then folded into a four ply and then the fabric is overfed into a...