One component is a fibrous or textile sheet, web, or batt

A method and apparatus for molding thermosetting and thermoplastic materials, particularly components of brassiere cups, enabling precise molding with a high degree of flexibility and control in the molding conditions of temperature, pressure and molding time. Two modes of molding are disclosed; a first...     

A method of lining a passageway with a hard, rigid pipe of thermosetting resin, wherein a tubular fibrous felt is immersed in the resin to form a carrier for the resin. The immersed felt and resin have an inflatable tube therein and this tube is inflated to shape the resin to the passageway surface....     

The invention relates to fibrous friction material and to a process for the production of same. In accordance with the invention, said material comprises carbon fabric, a polymeric thermosetting binder, viz. polyoxyphenylmethanephenoxysiloxane of the formula [-Si {OC.sub.6 H.sub.4 (CH.sub.2 C.sub.6 H.sub.3...     

A support material is fed through mating elements which emboss transverse score lines thereon to form an accordion fold in the material. A single thickness of the folded support material is then interleaved with a permeable membrane and sealed in a housing to form a compact inexpensive flat plate dialyzer....     

A synthetic material drumstick of the type commonly employed in the playing of various percussion instruments such as drums, cymbals, and the like, wherein the drumstick is fabricated from fiberglass reinforced polyester resin rod stock material machined to a specified dimensional configuration, which...     

A method of manufacturing a flexible cushion of foamed plastics material with an integrated cloth cover, comprising forming under vacuum to apply the cloth cover to the inner wall of a mold, and casting a plastics material capable of forming flexible foam, wherein before vacuum forming the cover in the...     

A method of manufacturing electrotechnical articles, preferably magnetic keys, from a magnetodielectric composition. The method comprises mixing together iron powder and a thermosetting resin containing a curing agent in vacuo in order to remove air inclusions and the volatile products of the thermosetting...     

Process for making radomes for the aircraft industry from fabrics and the like of varying weaves, saturated with resins, and allowed to harden in a two-part mold that corresponds to the radome profile, while applying pressure and heat. A stocking-shaped webbing, constituting an outer layer, is inserted...     

In manufacturing pressed boards, a flowable mixture of thermosetting resinous material and filler is blown through one or more nozzles into a converging throat formed by a pair of relatively inclined perforated conveyor bands in which the mixture is compacted into a continuous, coherent but preferably...     

A foam sandwich construction and a method for generating same. The construction includes a central foam layer which is formed of materials selected so that central layer can be a stress carrying member of the construction.

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 one-step method of both making and tortuously shaping three component tubular articles is disclosed, the tubular articles being of the hollow skin-core type of the desired complex configuration, strong and rigid, free from porosity, light in weight, resistant to high and low temperatures, comprised...     

A method and apparatus for directing a foamed material, such as a foamed binder, across the lateral dimension of a moving surface in a uniform and controlled metered flow. In accordance with the method the foamed material is fed into an interior compartment of an applicator unit and is spread laterally...     

A method of making a multitubular sheath comprising providing a porous multitubular fabric impregnated with thermoplastic or deformable polymer, continuously feeding the fabric onto an array of parallel metal rods, one tube to each rod, the rods having straight sizing portions, while holding the rods...     

A fluid flow transfer apparatus is constructed by placing a pleated membrane within a central chamber in a housing, injecting liquid potting material into the central chamber, positioning the housing while the potting is still flowable such that the membrane tips to be anchored to the housing are horizontal...     

In a sodium sulphur cell, a cathode electrode of annular form comprising a plurality of segments, each of trapezoidal form in cross-section is made by compressing a blanket or sheet of carbon or graphite felt or fibres in a heated mould, which is shaped to produce the segments joined by thin webs, the...     

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...     

A laminate comprises an adherent in-mold thermoset coating composition on a thermoset polyester glass fiber substrate, the coating composition comprising essentially the reaction product of an unsaturated aliphatic fumarate polyester diol, a saturated polyester diol flexibilizer, a cross-linking aliphatic...     

Thermoforming, utilized for making articles from sheets of thermoplastic ins, does not always yield articles having desired strength properties. It has been suggested that both thermoplastic and thermosetting layers be used to making the articles stronger. However it was virtually impossible to bond...     

Breast cups having various types of cuts or configurations are initially molded from basically flat sheets of flexible fabric on a bust cup mold having a prescribed configuration. The resulting, three-dimensional molded fabric cup then is cut by a die having a plurality of cutting surfaces, at least...     

In a reverse osmosis membrane of the structure of Loeb's membrane for use to purify sea-water into plain water, the membrane comprises a skin layer as an active layer and a gel layer to support the skin layer, wherein an improvement of flux, that is the (passing rate of purified water) is achievable...     

A prosthesis for use in valvuloplasty. The prosthesis is formed as a linear educer made of a material which is compatible with implantation and which in its direction of length is incompressible and inextensible but in the direction of its width is sufficiently flexible to assume a radius of curvature...     

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...     

A hemodialyzer in which a sealant anchors the edges of a plurality of generally planar semipermeable membranes to a generally rigid case. The moisture content of the membranes is maintained at approximately a constant value so as to prevent stress from being built up in the hemodialyzer due to changes...     

The tips of a pleated membrane are bonded to the interior of the housing of a fluid flow transfer apparatus by positioning support spacers in the membrane folds on the membrane side opposite the side to be bonded, closing the entrances to the spaces between the folds on the bonding side of the membrane,...     

The invention relates to a process wherein A a heat curable froth or foamable mixture of polyurethane reaction components is applied to the back of a fabric, B the coated fabric is heated to form a gelled, tack-free and storable foam-backed fabric and C the fabric is shaped and cured using a hot molding...     

A method and apparatus for manufacturing lined latex girdles in which one end of a fabric sheath which will form the liner of a latex girdle is sewn or otherwise held closed together and slipped over an annular rectangular frame, with the closed end of the bag disposed in the middle of the annular rectangular...     

In the manufacture of a protective glove, there is provided a mold having two parts interconnected to be moved into open and closed positions. There is also provided an inner glove lining, and each part of the mold is covered with it. The mold, in closed position, is dipped in a bath of protective coating...     

A monolithic-like, composite building module such as a wall panel having a core of rigid foam encased in a shell made of fiber reinforced cement. The composite module can be made by forming a supported open shell made of a hardened mixture of cement and fibers, introducing a rigid foamable polymer into...     

This disclosure relates to a method of manufacturing a pneumatic tire having a cast body of viscoelastic material, a road-engaging tread surface and a girdle member of reinforcing cords located in the crown area of the cast body. The method comprises the steps of assembling an annular hoop assembly with...     

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.

An anterior total contact hyperextension orthosis apparatus method of making a hyperextension orthosis. A stockinette is placed on a patient's body and marked for pre-determined patient features. A cast is formed on the patient's body for making a drape mold. The stockinette markings transfer to the...     

This invention concerns a method for forming thinwall structures from fiberglass, ferrocement or similiar materials in shapes that are inherently optimum in cost-strength effectiveness. Reinforcing means are hung from elevated points forming a catenary surface and then saturated with a post setting material....     

The present invention is directed to improved separatory devices employing polyurethane forming compositions, such as hollow fiber separatory devices intended to be used in biomedical applications. The separatory device employs at least one separatory membrane, suitable for the intended end use application,...     

The present invention is concerned with manufacturing board from a fluid evolutive product, such as a plaster and water mixture. The process comprises pouring upon a conveyor a fluid evolutive product, such as a plaster and water mixture, contained in storage above the conveyor, through a transverse,...     

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 fiber sheet for forming comprising a low softening point fiber and/or a high stretchability fiber and a high softening point fiber.

An article which has utility as a decorative surface for materials such as resilient flooring, furniture, walls, ceilings, counter tops and the like is produced by aligning and embedding a plurality of fibers in a translucent binder, curing the binder and thereafter subjecting the binder to tension which...     

A process for the reproduction of oil painting and the like, having a relief surface, using a relief mold taken from the original and a thermoplastic foil, imprinted with a color picture corresponding to the original, the foil being molded while being heated and which includes placing the foil upon the...     

Process for producing a resin-fiber composite which comprises applying a "B" stage resin film to a mold surface, placing a fiber reinforcement layer over the "B" stage film, applying a porous parting film over the fiber reinforcement layer, applying a bleeder layer over the fiber reinforcement layer...     

An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being...     

A reinforced bitumen pipe has an inner, strength-providing, reinforced thermosetting resin layer which is coated on its inner and outer sides with a bitumen layer. The bitumen layer on the inner side, and preferably also the bitumen layer on the outer side, is separated from the strength-providing reinforced...     

A fiber glass fabric reinforced wood sound board for a guitar is made by placing a sheet of wood in a shallow mold cavity with a layer of fiber glass fabric overlying an associated surface of the wood sheet, spreading a layer of liquid resinous compound over the layer of fabric to impregnate the fabric,...     

A method of molding a plastic component having first and second portions interconnected by a transition zone with a barrier material encapsulated in the plastic material of both of the portions of the component. The permeable barrier material is placed in a mold cavity to divide the cavity into first...     

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...     

Articles such as vests, helmets and structural elements containing a network of ultrahigh molecular weight, high strength, high modulus polyethylene or polypropylene fibers. The fibers, and especially polyethylene fibers of 15, 20, 25, 30 or more g/denier tenacity, and 300, 500, 1000, 1500 or more g/denier...     

This glass fiber-reinforced cement plate is comprised of both outside layers and an intermediate layer interposed therebetween, the former each comprising a glass fiber chopped strand-containing cement layer, the latter comprising a regulated set cement layer.

An FRP molding can be in-mold coated using a free radical peroxide initiated thermosetting composition of at least one polymerizable epoxy based oligomer having at least two acrylate groups, at least one copolymerizable ethylenically unsaturated monomer, at least one copolymerizable monoethylenically...     

There is described a tennis racket the frame and shaft of which are formed by synthetic resin-impregnated fibres, such as glass and/or carbon fibres, aromatic polyamide or boron fibres, and the core both of the frame and the shaft is preferably filled with a synthetic foam with the purpose of determining...     

An SMC (FRP) molding is coated with a minimum amount of an IMC composition by skewing one of the mold halves during the initial IMC molding cycle to effect a scissoring action, the fulcrum being at or about the IMC injection point or placement to spread or wipe the IMC over the surface of the SMC part...     

This glass fiber-reinforced cement plate is comprised of both outside layers and an intermediate layer interposed therebetween, the former each comprising a glass fiber chopped strand-containing cement layer, the latter comprising a regulated set cement layer.

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...     

An improved apparatus and method are disclosed for forming molded plastic articles, such as support devices, having wooden or otherwise fibrous backing members bonded thereto. The apparatus includes an injection molding machine within which the molded plastic articles are formed. Continuous strips of...     

A laminate is prepared, which comprises a base layer of a fibrous material mixed with a synthetic resin and its cross linking agent, a cover layer of unvulcanized rubber and an intermediate layer of thermoplastic resin. The laminate is shaped into a desired shape by the application of heat and pressure...     

This invention relates to a method of making a foam-containing structure which includes placing and suitably retaining a respective first shaped sheet in each of first and second complementary parts of an open mould. Each sheet includes at least one layer of fibrous material. A further respective shaped...     

A method is provided for compacting viscous polymeric molding compositions preparatory to compression molding to substantially improve the physical properties of articles molded therefrom. Suitable compositions include those filled with a geometric reinforcing particulate filler that are flowable and...     

A composite fibre reinforced body is formed from a first portion in which the reinforcing fibres thereof are exposed and splayed at one part upon which part is cast a settable liquid which wicks into the spaces between the splayed fibres to integrate the two portions. The fibre reinforced body is a pultrusion...     

A method of manufacturing a toothed belt including the steps of providing a cylindrical mold having a plurality of longitudinal circumferentially spaced grooves, providing a thin layer of settable material on the mold surface, preforming a fabric to define a corrugated reinforcement having projections...     

An activity toy with which a child may create needle craft like textured designs using plastic or amorphous solid substances. In order to simulate the strands or nubs that create the textured design in neddle crafts a stand supported on a surface holds a screen having mesh spaces extending between the...     

A unitary wheel is injection molded from reinforced thermoplastic material in such a manner that the melt streams of material meet and coalesce in the spokes of the wheel. This wheel has improved strength since the melt streams do not meet and coalesce in the rim portion thereby making the rim impact...     

A pair of substantially identical half-sections adapted to be wedged around a rod in locked position with the half-sections stamp molded from a prepreg formed by surrounding at least one fiber mat of inorganic reinforcing material with a matrix of PPS to produce a prepreg containing from about 15 to...     

A curing mold for curing glass fiber pipe insulation contains alternating positive and negative pressure zones and hot curing gases are introduced to the glass fibers during advancement through the positive pressure zones, and the curing gases are exhausted from elongated exhaust openings in the mold...     

The platelike floor covering article comprises a number of base elements and a covering material forming the walking surface, which covering material is bonded to the base elements. Each base element is a latticework surrounded by a rim member and has first latticed bars which support together with the...     

Fiber reinforced plastic products are produced in such a way that there is uniform resin dispersion throughout the product. Fabric is woven on a loom, and the reed dents of the loom are varied from the center to the edges of the fabric so that when the strain in the wrap and weft yarns is released once...     

Disclosed is a continuous process for removing an organic compound from water including passing an influent of water and organic compound through a filter bed of hard, substantially non-porous, inorganic particles to separate the organic compound and form a water effluent of reduced organic amounts,...     

Thermoforming of styrenic foam laminates having at least one outer layer of polyurethane foam having an outer facing of decorative fabric. Prior to thermoforming the laminate is heated to at least the thermoforming temperature of the styrenic foam but to a temperature such that the decorative fabric...     

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 composite is produced by forming a porous compact of a ceramic member selected from the group consisting of boron carbide, hafnium carbide, hafnium nitride, niobium carbide, niobium nitride, silicon carbide, silicon nitride, tantalum carbide, tantalum nitride, titanium carbide, titanium nitride, vanadium...     

A process for moulding articles of fibre reinforced plastics material which includes heating and moulding a sheet of consolidated thermoplastics material which has dispersed therein from 20% to 70% by weight of reinforcing fibres which have a high modulus of elasticity (as herein defined) and between...     

There is disclosed a polyurethane foam of the rigid type having three different types of polyol components capable of having suspended therein fillers and reinforcing fibers. The foam is made into boards and the like and has continuous fiber glass strands or yarn disposed longitudinally in or adjacent...     

A shrinkable foam mandrel that can be easily removed and composite resin transfer molding process that uses the foam mandrel. The foam is dimensionally stable at a first temperature that typically corresponds to the cure temperature of the composite resin. The foam is capable of irreversibly shrinking...     

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 fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.

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 polyurethane RIM method has two mixheads. Reactants are brought to each mixhead and are supplied as separate streams to two spaced cavities in a mold having a pre-formed porous mat separating the two cavities. One stream contains an isocyanate, polyol, chain extender and crosslinker selected to have...     

A marine drive water pump impeller (1) is provided for a marine rotary vane positive displacement water pump. A filament wound annular drive hub (3) is cured with resin polymer. A rubber annular base (6) having a plurality of flexible radial vanes (7), is molded in place around the drive hub (3). The...     

A method of making a bow limb which comprises the steps of wrapping impregnated fiberglass strands around a frame to create a fiberglass and resin blank or package. The wet blank or package is then placed in the mold to be shaped and cured. The package has a calculated predetermined number of fiberglass...     

An article of manufacture comprises a molded-plastic fitment such as one of the halves of a snap fastener molded in situ to a porous substrate such as a garment fabric. Various embodiments are described for the article, as well as dies for forming the same, and methods and a machine for making the same.

A latent curing fibre is produced by coating a glass fibre with an (optional) thermoplastic (polyamide) adhesion-promoting layer, a (preferably brittle) curing agent layer (e.g. styrene/maleic anhydride), and a flexible curable layer of epoxy plus curable polyester. Composites of this fibre with non-reactive...     

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...     

Surgical osteosynthesis composite material, which is self-reinforced i.e. it is formed about the absorbable polymer or copolymer matrix which is reinforced with the absorbable reinforcement units which have the same chemical element percentage composition as the matrix has.

A compact stretcher is disclosed which is erectable upon requirement. In a preferred embodiment, stretcher poles each consist of a tube of textile material impregnated with a moisture-curable polyurethane which is received within an impervious outer cover tube. The tubes and stretcher base are carried...     

Fiber reinforced molding compounds wherein the resinous matrix is a thermosetting linear polymer characterized in constituting two oligomeric ethylenically unsaturated polyester segments joined through a polyurethane residue and having acryloyl or methacryloyl end groups.

A magnetic tape cassette having a magnetic tape, a pair of reel hubs and a cassette body for rotatably retaining the pair of reel hubs around which the magnetic tape is wound. A protective layer fabricated of a nonwoven fabric is formed unitedly connected to the surface of the cassette body. The cassette...     

A carbonizable body is formed by infusing a plurality of preoxidized, preferably stabilized by known processing to have about 9 to 14 weight percent oxygen, polyacrylonitrile fibers in a polar liquid plasticizer, preferably water, capable of extracting a tarry leachate from the fibers. The infusion of...     

A method and an apparatus for forming a coating layer on a molded product formed in a split-type mold assembly, which assembly includes first and second dies supported for movement relative to each other and a shut-off pin for forming a perforation in the molded product. The shut-off pin is first caused...     

A method of molding a hollow, fiber reinforced glass matrix composite article. Reinforcing fibers are placed in a mold cavity. A billet of high temperature stable glass matrix material is heated above its flow point. The thus heated matrix materials is flowed into the mold cavity from a point inside...     

The invention relates to a process for the manufacture of hollow articles, in which a photocurable resin is introduced into a mold which transmits light, the mold is irradiated until the resin has polymerized to the desired depth, the remaining resin is allowed to run out and the partially polymerized...     

A method of making precision low cost molds by applying a plurality of layers of material to a pattern. The method includes providing a pattern of the part to be formed; orienting the pattern on a surface plate in a molding dam; applying a release coating to the surfaces; applying a thin resin layer...     

A method of making a styling model of a decorative body portion of an automobile. The internal surfaces facing inwardly with respect to the outer body portion of the automobile are machined in a block of machinable foam. Hardenable glass fiber material is layed up on the internal surfaces and hardened....     

Method for manufacturing a molded article, for use, for example as a fluid filter or as a preform for a structural composite, is prepared from a batt of nonwoven structural fibers and a binder material, such as binder fibers or a thermoresponsive resin. The batt is stabilized by exposing it to a temperature...     

A trapped rubber molding method including a die positioned within a fixed-volume, rigid mold, the die being surrounded by an integral solid silicone rubber material which has been cured within the mold at an elevated temperature. The die and mold closure are thermally isolated from the remainder of the...     

A method for manufacturing a panel, such as an automotive panel, using the resin transfer molding (RTM) process. The method includes the steps of preforming a first mat of glass fibers into a shape approximating one side of the panel and, similarly, preforming a second mat of glass fibers into a shape...     

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...     

A fabric reinforcement for use with synthetic plastics material to produce a composite article is shaped to exhibit a tubular portion having a longitudinal axis, which can be curved, and at least one flange extending in the direction of the longitudinal axis. Using up to several interlinked tubular portions...     

A method of fabricating a composite structure having at least one skin molecularly bonded to a core. A skin is provided of reinforcing fibrous material and a thermoplastic matrix. The skin is thermoformed to the general exterior shape of the composite strucutre. The skin is placed in a mold, and a core...     

A deep drawn, synthetic-foil-sealed textile with foamed backing is perforated by applying hot pressurized air towards the foil, locally and in discrete spots, so that the foil melts locally, and foil material is blown into the textile under formation of a perforation duct that is bonded to the textile...     

A process and system for vacuum impregnation of a fiber reinforcement, such as carbon cloth, with a resin to produce a resin-fiber composite. Liquid resin enters in arrangement or system comprising a fiber reinforcement layer on a tool or mold and is directed via a system of flow paths to impregnate...