Abstract: A filter composite comprises a first layer of glass fibers having random orientation, and synthetic resinous fibers extending in close association with the glass fibers, the glass fibers having:

Abstract: A liner is disclosed that is capable of being tuned or adjusted during manufacturing to absorb or reflect sound energy, as necessary or desired for a particular application. The liner is formed of a composite material comprising a combination or mixture of mineral fibers, such as glass fibers, and organic fibers, such as polypropylene fibers.

Abstract: A protective sheathing is provided for use as a protective wrap about longitudinal objects such as cables, wires and bundles of wires in a wiring harness. The sheathing has at least two layers of a non-woven felt fabric. The two layers are bonded together at certain points between them, but not all points, with a hot melt net-like adhesive layer between the felt fabric layers. A layer of adhesive film or velcro is provided on an outside surface of one of the layers of non-woven felt fabric to secure the sheathing around the bundle of wires to be protected.

Abstract: A ceramic fiber blanket is inserted into a mold, and ceramic fiber slurry, preferably made with refractory ceramic fibers, binders, and water, is deposited on the blanket. Vacuum pressure is created under the blanket to pull the fibers of the slurry toward the fibers of the blanket to entangle them together. The slurry and blanket is then dried to form a rigid yet surface compliant ceramic fiber composite product with superior thermal insulating and acoustic dampening properties.

Abstract: Fire and heat protective flexible web, comprising a flexible material. The web comprises, in a cross section view from the heat exposed side: a selected first support layer (1) consisting of a steam permeable, solid and tear resistant textile, one or more fluid transporting layers (2) consisting of a liquid permeable and airy textile, a selected second support layer (1) consisting of a steam permeable, solid and tear resistant textile, and a conduit (6) mounted at least in the upper part of the fire projective web, for supply of fluid to the fluid conducting weblayer, and to disperse the fluid evenly in the longitudinal extent of the web, whereby the different layers are tightly connected surface-to-surface by means of seams, adhesives, point fixing or similar.

Abstract: This invention relates to generally to geosynthetic materials which can be used for earthen reinforcement, and more particularly to a novel geosynthetic material exhibiting less strain under an initial tensile load then presently available geosynthetic materials.

Abstract: A laminated board comprising an intermediate layer and two surface layers formed thereon, in which board the intermediate layer comprises a central layer made of a nonwoven glass fiber fabric impregnated with a resin composition containing a thermosetting resin and an inorganic filler and upper and lower layers formed on the central layer, each being made of said resin composition containing a thermosetting resin and an inorganic filler, and the two surface layers formed on the intermediate layer are made of a thermosetting resin-impregnated fiber substrate; and a process for production of the laminated board.

Abstract: A preform suitable for use in a resin transfer molding process comprising (1) one or more layers of a non-woven random mat and (2) one or more layers of a series of tows of unidirectional fibers held together by a polymeric curable resin film grid. The polymeric resin film is in the form of a grid, such that only a fraction of the surface area of the fibers contacts the resin film.

Abstract: Disclosed herein is a wiping sheet composed of two pieces of spunlace nonwoven fabrics containing heat-shrinkable fiber which are fusion-bonded together with fusion-bonding lines which extend in the cross direction perpendicular to the machine direction. The fusion-bonding lines are formed such that their pitch in the machine direction is shorter than one half of the fiber length so that each fusion-bonding line intersects a single fiber at 3 or more points. This structure prevents surface fluffing and imparts a high surface frictional strength and a high bending resistance for comfortable wiping work.

Abstract: A filter composite comprising a first layer of glass fibers having random orientation, the layer being porous to gas flow therethrough; a porous mat of sufficient stiffness as to support the glass fiber layer during use as a filter, the mat consisting of compacted glass fibers; and an additional porous layer carried by the mat to block escape of glass fibers or particles from the filter composite during gas flow therethrough, the composite formed to have pleated or undulating configuration.

Abstract: The disclosed pressure transducer assembly includes an external enclosure, a thermal shell disposed within the external enclosure, and a pressure sensor disposed within the thermal shell. The pressure sensor senses the gas or vapor pressure present in a tube coupling the sensor to a source of pressurized gas or vapor. The assembly includes a device for heating the thermal shell, and thermal insulation is disposed between the thermal shell and the external enclosure. The thermal insulation includes a plurality of metalized high temperature films stacked one on top of another and a plurality of spacer layers, each of the spacer layers being disposed between adjacent ones of the metalized high temperature films.

Abstract: The present invention provides a needled mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The needled mat includes a primary layer of a plurality of unidirectional continuous glass fiber strands coated with a composition which is compatible with the thermosetting matrix material and a secondary layer positioned thereon of a plurality of randomly oriented, generally continuous and/or chopped glass fiber strands coated with a composition which is compatible with the thermosetting matrix material. The mat has a total surface weight ranging from about 1300 to about 11,500 grams per square meter.

Abstract: The present invention provides a mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The mat includes a primary, supporting layer having a plurality of randomly oriented essentially continuous glass fiber strands. The primary layer has about 1 to about 10 weight percent of the mat on a total solids basis. The mat also includes a secondary layer positioned upon and supported by a surface of the primary layer, the secondary layer including a plurality of glass fiber strands. The mean average length of the glass fiber strands of the secondary layer ranges from about 20 to about 125 millimeters. The strands of the primary layer are entangled with the strands of the secondary layer by needling the primary layer and the secondary layer together.

Abstract: The invention relates to a hydrophilic cotton lap constituted 100% of cotton fibers. In the invention, the lap is a composite and comprises three cotton layers evincing inter-cohesiveness arising from a continuous lap manufacturing procedure. The external layers and enclosing the central layer are webs. The lap of the invention is used in the form of packaged or formatted units of hydrophilic cotton.

Abstract: Making fibrous substrates. The method consists for a given substrate thickness in adopting a displacement step size that varies in application of a step size reduction relationship adopted to impart constant thickness to the various superposed and bonded-togehter layer thickness making up said substrate thickness. Application to manufacturing friction parts.

Abstract: The present invention relates to mat-shaped composites having porosities above 60% and densities below 0.6 g/cm.sup.3, comprising an aerogel and fibers dispersed therein, the aerogel having cracks and the aerogel fragments enclosed by the cracks, whose average volume is 0.001 mm.sup.3 to 1 cm.sup.3, being held together by the fibers. The present invention further relates to processes for producing the composites of the invention and to their use.

Abstract: An improved article of manufacture and method thereof utilizing a fibrous structure of initially discrete layers, each having first and second sides. At least one side of each layer is rough and the structure has a shrinkage of no more than about 2 percent. The structure is impregnated with a thermoplastic-type polymeric material, and in the final structure there is no visible layer separation.

Abstract: A ballistic resistance multi-structure material having multiple layers. The material has at least one layer of hard surfaced ballistic resistant woven material, at least one layer of ballistic nonwoven material and one layer ballistic nonwoven material with at least one layer of a plurality of deflection devices embedded within. The deflection devices are adjacent one another and have a ballistic deflecting geometric. The path of a bullet is diverted by crushing the structure of the bullet, altering the angle of the path of projection or stopping the penetration of the bullet beyond the layer of multiple geometric shapes. In a further embodiment, for use with lasers, the ballistic deflecting geometric shapes have a reflective surface. A reflective layer can be placed adjacent the layer of geometric shapes, reflecting laser beams away from the user's body.

Abstract: A panel is formed from an expanded mat of fiberglass strands, a thermosetting resin binder is incorporated with these strands. When the panel is formed, it has a relief between the edges of the panel and the recessed portion of the panel. The panel is retained in its molded position by the setting of the thermosetting resin binder.

Abstract: An article made from at least one network of high strength fibers and a thermoplastic polyurethane matrix material derived from an aliphatic didiisocyanate and a polyol. Preferably, the article is made from at least one prepreg element which includes at least two adjacent layers of the high strength fiber network in the thermoplastic polyurethane matrix material.

Abstract: Thermodynamically stable ceramic composites are provided for use in high temperature reactive environments. A phosphate selected from monazites and xenotimes functions as a weak bond material in the composite. Monazite comprises a family of minerals having the form MPO.sub.4, where M is selected from the larger trivalent rare earth elements of the lanthanide series (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, and Tb) and coupled substituted divalents and tetravalents such as Ca or Sr with Zr or Th. Xenotimes are phosphates similar to monazite where M is selected from Sc, Y, and the smaller trivalent rare earth elements of the lanthanide series (Dy, Ho, Er, Tm, Yb, and Lu).

Abstract: Glass ribbon-reinforced transparent polymer composites which provide excellent optical transparency and a low distortion level over a wide temperature range while exhibiting superior mechanical properties as compared to non-reinforced polymer counterparts, and equivalent properties as compared to glass fiber-reinforced counterparts.

Abstract: Glass fiber non-woven fabric for base material of a laminate comprising binder binding glass fibers to each other, said binder including a reactant product formed by reacting a solution of tri-functional epoxy resin, bi-functional epoxy resin and tri-ethylene tetramine and having an acetic solution and phenyl amino-silane coupling agent added thereto. The thus obtained glass fiber non-woven fabric is impregnated with an predetermined amount of epoxy resin and dried to produce prepregs, which are superposed one upon another and formed under heat and pressure of 20 kgf/cm.sup.2 to produce the laminate.

Abstract: A composite material consisting of continuous random glass mats with a new non-peroxide sizing chemistry, polypropylene and a functionalized polypropylene. This composite gives unexpectedly higher performance in bumper beam applications. The functionalized polypropylene contains anhydride functionalities, which are preferably maleic anhydride.

Abstract: A composite resinold/graphite/diamond blade is described having enhanced precision cutting properties. The blade is made by assembling several layers, each layer comprising a veil of non-woven graphite fabric impregnated with a mixture of diamond particles blended into a phenolic resin. Layers are built up in sandwich fashion. In one embodiment described, four layers are formed and, in a heating compression molding operation, the sandwich is compressed into a composite blade having a diameter of 4.7 inches with a thickness of 0.011 inch. The final blade is formed by a die cut and lapping process. The layered construction yields a blade with more consistent cross-section and improves blade wear symmetry. In another embodiment, the layers are tailored to have a grit concentration of the diamond/resin mixture at the periphery or cutting edge.

Abstract: The invention pertains to a composition useful for curing a polyepoxide or advanced epoxy resin consisting essentially of (A) a curing agent capable of reacting with a polyepoxide at elevated temperatures; and (B) boric acid in an amount of from about 0.01 to about 2.0 parts of polyepoxide.

Abstract: An insulation panel is formed comprising a binderless, heat bonded glass fiber insulation board encapsulated within a partially evacuated, gas-tight envelope. The insulation board is formed by laying down discrete length glass fibers into a thin glass fiber mat with the glass fibers lying predominately in and randomly oriented in planes extending substantially parallel to the major surfaces of the thin glass fiber mat. The thin glass fiber mat is layered to form an uncompressed thick glass fiber blanket. The thick glass fiber blanket is heated to a temperature between about 25.degree. C. below and about 20.degree. C. above the strain temperature of the glass fibers; compressed to its final thickness and density; and cooled to form the binderless, heat bonded glass fiber insulation board having glass fibers lying predominately in planes which extend parallel to the major surfaces of the insulation board. The insulation board is encapsulated within the gas-tight envelope to form the insulation panel.

Abstract: An FRP product of the state that a printed material is covered on its back surface side with a transparent surface mat by coating a surface of a mold with a gel coating to become an outer surface through a mold release agent, laying a glass mat of unsaturated polyester resin-impregnated reinforced fiber on the gel coating, further laying a glass mat of the same material sufficiently by pressure of a roller or a brush on the gel coating, laying a printed material for indicating the material at an arbitrary position thereon, laying, for example, a transparent surface mat of unsaturated polyester resin-impregnated glass fiber by pressure of a presser such as a roller or a brush or the like on the printed material, and hardening together them, and an indication method thereof is obtained.Thus, an indication of the material of the FRP product to be displayed on a back surface side of the hand-lay-up FRP product can be accurately confirmed from outside for a long period of time.

Abstract: Rigid composite laminates of paper and glass layers, suitable for use as ouflage, are provided. This combination of components allows for great versatility in the final design and utility. A strong bond is obtained between paper and a fiberglass layer due to formation of a resin-cellulose matrix which allows interbonding between the paper and fibrous glass. The composite laminates may include other coatings or signature control layers and can be used as simple appliques or construction materials. A method for preparing the composite laminates is also provided wherein the paper is treated to enhance porosity in the formation of the resin-cellulose matrix.

Abstract: Semifinished material consisting of symmetrically-needled glass-fiber mat impregnated with a thermoplastic polymer. The glass mat can be made by, for instance, needling continuous filament web from above and below at the same time with a double needling machine.