Abstract: A partially impregnated preform employs a fiber layer partially impregnated with a resin to form a fiber reinforced resin composite. The fiber layer of the partially impregnated preform is formed of a plurality of parallel oriented tows, each tow formed of a plurality of unidirectional reinforcement fibers. The resin is partially impregnated on one or both faces of the fiber layer. A resin composition for partially impregnating a fiber layer of a preform is also provided. A stack of partially impregnated preforms utilizes a plurality of partially impregnated preforms. The stack of partially impregnated preforms may be cross-ply reinforced by cross-ply stitching the stack of partially impregnated preforms together prior to curing to form a fiber reinforced resin composite upon curing.

Abstract: A softer absorbent garment is prepared by incorporating elastic strands that are coated around their periphery. The elastic strands are coated with adhesive by immersing them in an adhesive-filled applicator comb prior to applying the elastic strands to the garment. The absorbent garment thus requires less adhesive, and the manufacturing method provides a cleaner work environment.

Abstract: A sheet of unidirectionally-oriented fiber strands includes unidirectional fibers, bonding fibers interwoven with the unidirectional fibers to form a fiber panel, and thermoplastic film laminating the fiber panel there between. In one embodiment, a second sheet of laminated unidirectional fibers is joined to the first sheet of laminated unidirectional fibers with the unidirectional fibers running in a second direction as compared to the first fibers. In yet another embodiment, individual laminated sheets of unidirectional fibers are stitched together to form packets of sheets which may be used singularly or multiple packets may be bundled together.

Abstract: A fiber reinforced composite wood board is designed particularly for use in the flooring of truck trailers which experience adverse operating conditions such as from heavy loads of lift trucks on the top side and water spray during rainy periods on the bottom side. The composite wood board comprises an edge-glued laminated wood member composed of wood segments with end joints. The wood member is underlaid with a thin layer of fiber reinforced plastic. The top surface of the composite wood board is the same as that of the laminated wood. The fiber reinforced plastic underlay is composed of glass and/or carbon fibers embedded in a polymeric resin such as epoxy, phenolic, vinyl ester, polyester, polypropylene or polyamide resin. Further, the fiber reinforced plastic underlay is substantially bonded to the wood member with a reactive hotmelt adhesive.

Abstract: A fiber reinforced composite wood flooring is designed particularly for use in van-type truck trailers which experience adverse operating conditions due to heavy lift truck traffic on the top side and water spray during rainy periods on the bottom side. The composite wood flooring comprises edge-glued laminated wood which is underlaid with a thin layer of fiber reinforced plastic. The top surface of the composite wood floor is the same as that of a conventional laminated wood floor. The fiber reinforced plastic underlay is composed of glass and/or carbon fibers embedded in a polymeric resin such as epoxy, phenolic, vinyl ester, polypropylene or polyamide resin. The fiber reinforcement is designed to enhance the mechanical properties of the flooring in the longitudinal and transverse directions of the floor. The fiber reinforced plastic improves the fatigue resistance of the composite wood flooring and prevents water leakage into the trailer through the floor boards.

Abstract: A nonwoven fabric sheet comprising a multiplicity of generally parallel elongate strands of inelastic thermoplastic material extending in a first direction in spaced relationship, each of said strands having opposite elongate side surface portions that are spaced from and are adjacent elongate side surface portions of adjacent strands, and each of said strands also having corresponding opposite first and second elongate surface portions extending between said opposite elongate side surface portions, and a first sheet of flexible nonwoven material having spaced anchor portions bonded at first bond sites of the strands along said first elongate surface portions wherein the elongate strands thermoplastic material is oriented at least between adjacent bond sites along the length of the strands.

Abstract: The object of the invention is a process for the production of a reinforced acoustically resistive layer, in which there is produced a layer of structural reinforcement (2) from fibers pre-impregnated with a thermosetting or thermoplastic resin, said layer having a given quantity of open surface relative to the acoustic waves to be handled, there is associated with said reinforcing layer (2) a metallic acoustic cloth (5) whose mesh is suitable for the quantity of open surface of said structural layer, and the polymerization or consolidation of said resins under pressure and temperature suitable for the resins used, is carried out, characterized in that there is associated with the impregnation resin for the fibers a component (2a) adapted for macromolecular interpenetration with said resin during the polymerization or consolidation so as to ensure for the reinforcing layer (2) improved mechanical and adhesive properties for the metallic cloth (5).

Abstract: A method of manufacturing an elongate article such as a golf club shaft. An elongate hollow polymer core is formed by gas injection molding. A plurality of layers of a curable material are wrapped around the core. The layers have a uniaxial reinforcement with the reinforcement in respective layers inclined relative to each other. The wrapped core is subsequently cured.

Abstract: The invention provides a laminated product of urethane-based resin. That is, the invention arranges a continuous reinforcing fiber to one direction, impregnates the arranged fiber with thermoplastic resin to form a prepreg sheet having 50% in volume ratio of the fiber, laminates two or more resulting prepreg sheets so as to intersect fiber directions at right angles or further laminate of the prepreg sheet to form a fiber-reinforced resin layer, laminates a urethane-based resin layer on the resulting fiber-reinforced resin layer, and thus provides a urethane-based resin laminated product having excellent dimensional stability and application ability.

Abstract: A fabric for reinforcement of canvasses having a plastic coating includes a warp and a weft which form meshes. The meshes have a maximum dimension ranging from 5 cm to 30 cm with at least one of the warp or the weft being formed by a strip which comprises a matrix of a thermoplastic material which is adherable to the plastic coating of the canvasses. The strip includes two or more elongated metal members and has a cross-sectional average thickness ranging from 0.50 mm to 3.0 mm and a cross-sectional width ranging from 3 mm to 25 mm. The metal members provide the canvasses sufficient resistance against the cutting action of a knife or against the action of a pair of shears.

Abstract: A polyolefin plaque is made by hot compaction of an assembly of fibers of the oriented polymer. It has been found to be beneficial to subject the fibers to a prior crosslinking process. Hot compaction is then less temperature-sensitive and produces plaques with excellent hot strength properties. Preferably the fibers have been subjected to prior stages of irradiation and annealing, both in a non-oxidising environment, for example acetylene.

Abstract: This invention relates to a heat conductive resin substrate which polybenzasol fibers are oriented in a thick direction and/or a direction of a surface of a resin substrate, further to the heat conductive resin substrate and a semiconductor package excellent in heat radiation ability which the semiconductor chips are mounted on the heat conductive resin substrate which the polybenzasol fibers are oriented in the thick direction (the Z direction) and/or the direction of the surface of the resin substrate, the heat conductive resin substance and the semiconductor package being provided with electrical insulation and high thermal conductivity, and being capable of controlling the thermal expansion coefficient.

Abstract: A composite structural reinforcing strip is affixed to a structure to be reinforced (such as a bridge span, foundation pillar, or similar structure) by the use of several fasteners which extend through the strip and into the structure. The reinforcing strip preferably includes elongated continuous parallel fibers which have lengths extending along the length of the strip, and nondirectional fibers distributed transversely across the strip, with a polymer matrix affixing the parallel and nondirectional fibers. The strip may be placed on the structure to be reinforced, and may be attached thereon by actuating a common powder-actuated fastener gun to send fasteners through the strip and into the structure.

Abstract: In this tape (15), the fibers are discontinuous and have a length distribution such that the mean fiber length, that is to say the mean length of 50% of the fibers in a specimen, is between approximately 40 and 70% of the length of the longest fiber in the specimen, the fibers being combined by means of a resin (10) or of an adhesive having a fugitive nature. Application to the production of components made of composites.

Abstract: An inexpensive sheet or web shaped fibre material for use e.g., in sanitary napkins typically consists of a mixture of short cellulose fibres and some 15% of relatively long, thermoplastic binder fibers. It is a noticeable problem that the short fibres “dust” out of the material, and according to the invention this is remedied in that the material, when made by dry forming, is provided with a surface coating of very thin layers of pure binder fibres. In addition to a marked holding back of the dust, these layers condition that the amount of binder fibres in the base material can be halved and that the breaking stress of the material is noticeably improved. Thereby the products are usable not only as inserts, but also as individual, self-contained units e.g., for wiping in domestic or industrial cleaning.

Abstract: The instant invention involves a process used in preparing fibrous tows which may be formed into polymeric plastic composites. The process involves the steps of (a) forming a carbon fiber tow; (b) forming a thermoplastic polymeric fiber tow; (c) intermixing the two tows; and (d) withdrawing the intermixed tow for further use.

Abstract: The invention provides a method of forming a void-free laminate, comprising the steps of: (a) enclosing a partially impregnated prepreg in a vacuum envelope, said partially impregnated prepreg comprising a fiber layer partially impregnated with a resin composition; and (b) heating said partially impregnated prepreg under vacuum to withdraw air present in said partially impregnated prepreg and to cause said resin composition (i) to fully infuse into said fiber layer and (ii) to cure thereby forming said void-free laminate. The present invention further provides novel combinations of modified epoxy resins that may be employed with the methods disclosed. The void-free laminates may be utilized for the manufacture of parts for the aerospace and aircraft industries.

Abstract: A composite having a plurality of filaments arranged in a fibrous web that is held together in a unitary structure by a domain matrix. The domain matrix comprises a plurality of matrix islands that individually connect, or bond, at least two filaments, to thereby hold the filaments in a unitary structure. Portions of the filament lengths within the unitary structure are free of matrix islands, causing the domain matrix to be discontinuous. The composite possesses a greater flexibility than coated structures. The composite may be formed into cross-plied structures. A method of making the composite also is disclosed.

Abstract: A composite material comprising an inorganic filler material and a oriented fibrous polymeric material characterized in that the fibrous material has areas of adjacent fibers fused together to form a network or continuous matrix while retaining oriented fibrous structure in the composite.

Abstract: Described is a process for the incorporation of an antimicrobial agent into a non-woven comprising treating the nonwoven with a formulation comprising (a) an antimicrobial agent selected from (a1) halogeno-o-hydroxydiphenyl compound; (a2) phenol derivative; (a3) benzyl compound; (a4) chlorohexidine and a derivative thereof; (a5) C12-C14alkylbetaine and C8-C18fatty acid amidoalkylbetaine; (a6) an amphoteric surfactant; (a7) trihalocarbanilide; (a8) quaternary and polyquaternary compound; and (a9) a thiazole compound; and (a10) a iodine containing agent; (a11) a naphthyl derivative; (b) a solubilizing agent; and optionally (c) at least one copolymer made from two or more monomers, with at least one monomer having good affinity to the textiles and at least another monomer having affinity to the involved antimicrobial substances.

Abstract: A photocurable prepreg sheet for waterproofing includes (1) a fiber-reinforced resin layer which comprises a sheet-shaped inorganic or organic fibrous reinforcing material impregnated with a resin composition comprising: (A) an unsaturated polyester resin and/or vinyl ester resin: 100 parts by weight, and (B) at least two photopolymerization initiators having photosensitivity in different wavelength ranges from ultraviolet range to near infrared range: 0.01 to 10 parts by weight, and which is treated with light of a specific wavelength to thereby undergo prepolymerization which causes at least one of the polymerization initiators and radical-polymerizable unsaturated groups to remain partially intact; and (2) film which covers an upper surface and a back surface of the fiber-reinforced resin layer.

Abstract: A sleeve having a longitudinally extending slit for covering wires or tubing is provided with a support layer of a continuous monofilament of formable metal wire or heat-settable monofilament formed into a multiplicity of spaced apart reversely bent crests and troughs. The continuous monofilament is bent to form a split tube having the crests and troughs in facing relationship. At least one outer layer is provided on said support layer. The outer layer may be an insulator such as a metal foil or metalized film, an abrasion-resistant material or a resilient sound-absorbing material. Inner layers may comprise insulating materials and/or felts, foams or other sound-absorbing materials. Various closure means for closing the longitudinal opening formed at the slit are disclosed.

Abstract: The present invention relates to a carbon fiber reinforced plastic member provided with high-elongation fiber bundle regions, which are uni-directionally aligned and separately disposed within the plastic member. The plastic member provides a carbon fiber reinforced plastic of lightweight, high strength and high modulus that is safe. Even if it breaks, it shows little scatter of fragments or exposure of dangerous fracture surfaces. Preferably, the high-elongation fiber at break has an elongation exceeding about 10%.

Abstract: A method for making a mat adapted to reinforce a polymeric matrix material, the method including the steps of (a) positioning a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat to form a first layer, at least a portion of outer surfaces of the first layer glass fiber strands having applied thereon at least a partial layer having at least a partially dried residue of a first coating composition which is compatible with a polymeric matrix material, wherein at least a first portion of the first layer glass fiber strands are positioned within an at least one primary area at a primary strand density and at least a second portion of the first layer glass fiber strands are positioned within an at least one secondary area at a secondary strand density which is different from the primary strand density; (b) dispersing a plurality of randomly oriented glass fiber strands within the at least one primary area and the at least one sec

Abstract: An electrical component including: a plurality of long fibers and a matrix, wherein at least one of the fibers is electrically conductive, wherein the plurality of long fibers includes a first fiber group extending in a manner generally parallel to a first axis, and a second fiber group extending in a manner generally parallel to a different second axis.

Abstract: A composite with a thermoplastic matrix and fiber reinforcement is made by rotation of an exit die about a roving of continuous fiber in the presence of a thermoplastic melt. The rotation causes opposing inner and outer helical flow conditions which reduce the melt viscosity of the polymer by shear thinning while dragging and directing the polymer into the fiber roving thereby wetting and dispersing the fiber. A composite structure is formed with a polymer rich skin and a core region of unidirectionally aligned polymer and fiber. The polymeric skin is composed of helically aligned polymer chains which are coiled by the rotation around the core to compress the core region and enhance fiber wet out.

Abstract: A method for producing a mineral fiber-insulating web comprises the steps of firstly producing a first non-woven mineral fiber-web being a loosely compacted mineral fiber web of a low area weight. The first material fiber web contains mineral fibers arranged generally in the longitudinal direction of the mineral fiber web. Secondly, the first material fiber web is moved in the longitudinal direction of the web and folded transversely relative to the longitudinal direction and parallel with a transversal direction of the first mineral fiber web, so as to produce a second mineral fiber-web containing mineral fibers arranged generally perpendicular to the longitudinal and transversal directions. Thereupon, the folded mineral fiber web is cured for bonding the mineral fibers together so as to produce the mineral fiber-insulating web comprising a central body containing mineral fibers arranged generally perpendicular to the longitudinal direction of the mineral fiber web.

Abstract: Disclosed is a unidirectional fiber sheet comprising an arranged fiber layer, a multi axial scrim, and a release paper having 3 to 80% of its surface area coated with an adhesive. The adhesive is applied to the release paper in the form of stripes which may be positioned parallel, perpendicular or oblique to the filaments of the arranged fiber layer. The unidirectional fiber sheet according to the present invention is prepared by partially coating a release paper with an adhesive, and heat-pressing together an arranged fiber layer prepared from filament tows, a multi axial scrim having a net structure to support the arranged fiber layer, and the release paper so as to bind the three together.

Abstract: An electrical component including a plurality of electrically conductive fibers in a matrix, wherein the matrix is prepared from a composition including a methyl methacrylate monomer and a modified bisphenol monomer, wherein the electrical component has a region at least substantially free of the matrix to provide a plurality of electrical contact points.

Abstract: A female fabric for use in a hook and loop connecting arrangement in which a plurality of spaced substantially parallel yarns having loops projecting from and integral therewith are held in spaced relationship by a suitable adhesive material.

Abstract: A method of forming a plastic component. The method includes a first step of forming a profile by pulling fibrous material, having been wetted out by a resin, through a first die and curing the composite formed so that it maintains its ultimate shape. The surfaces to be coated are treated to create free radicals (bonding sites) which are then available for bonding of an acrylic compound coating. Thereafter, the acrylic compound is applied to the profile to form a coating directly thereon. Application is effected by passing the cured and treated profile through a crosshead extrusion die. The acrylic compound coating is bonded directly to the profile. The invention also includes a fiber reinforced plastic component manufactured in accordance with the method.

Abstract: The invention provides a fiberboard, as well as its manufacturing method, which comprises lignocellulose long fibers with a fiber length 50 mm or more and resin. The fiberboard of the invention has high mechanical strength and superior dimensional stability. Since lignocellulose-base materials of long fibers are utilized, the fiberboard can save the consumption of precious wood resources.

Abstract: A fiber reinforced composite wood flooring is designed particularly for use in van-type truck trailers which experience adverse operating conditions due to heavy lift truck traffic on the top side and water spray during rainy periods on the bottom side. The composite wood flooring comprises edge-glued laminated wood which is underlaid with a thin layer of fiber reinforced plastic. The top surface of the composite wood floor is the same as that of a conventional laminated wood floor. The fiber reinforced plastic underlay is composed of glass and/or carbon fibers embedded in a polymeric resin such as epoxy, phenolic, vinyl ester, polypropylene or polyamide resin. The fiber reinforcement is designed to enhance the mechanical properties of the flooring in the longitudinal and transverse directions of the floor. The fiber reinforced plastic improves the fatigue resistance of the composite wood flooring and prevents water leakage into the trailer through the floor boards.

Abstract: A reinforcing lamina sheet and a process of making a reinforcing sheet for use in a glue laminated beam. The reinforcing lamina sheet increases the compressive and/or tensile strength of the glue laminate beam. The lamina sheet is formed from unidirectionally oriented reinforcing filaments, preferably aramid filaments in an epoxy resin, and is cured in a curved configuration. The resulting lamina sheet includes filaments which are uniformly tensioned and, therefore, when a load is applied to the glue laminate beam having the reinforcing lamina sheet, the fibers receive the load substantially simultaneously. The process of forming the lamina sheet includes drawing reinforcement yarns through a resin bath to form a resin impregnated substantially planar yarn band, contacting one side of the resulting impregnated band with a curved heated surface to promote partial curing of at least the contacting surface of the band, and further applying heat to at least the opposite side of the partially cured band.

Abstract: A polyolefin composite for a printed circuit board or antenna base material, a base material including the composite and electronic modules including the base material. The base material includes at least one dielectric layer including a polyolefin composite and at least one electroconductive layer including an electroconductive material, the dielectric and electroconductive layers being intimately bonded to one another.

Abstract: A liner strip for lining an interior surface of a pipe including an extended plastic strip having T-shaped formations with reinforcing fibers integrally extruded in the liner strip for increasing the liner stiffness and tensile strength to resist forces imposed on the liner during installation.