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WO/1994/017999 |
The disclosure describes a method of making a pre-impregnated composite material of asbestos fibre weaving that comprises the steps of passing a bidirectionally woven asbestos fabric in a resin bath formed between a pair of impregnating ...
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WO/1994/015765 |
The present invention provides a process and apparatus which increase the wetting of the fibers with molten thermoplastic polymer by advancing fibers in a counter-current manner through the molten polymer. Shear forces thus induced in th...
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WO/1994/015197 |
A method for determining the quality of dispersion of glass fibers in a thermoplastic resin preform layer compares the mean characteristic length of the glass fiber bundles in the preform layer to a predetermined value indicative of disp...
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WO/1994/009972 |
Composites incorporating unidirectional discontinuous reinforcing fibers are formed in one process by carding a mixture including discontinuous fibers of a thermoplastic material and discontinuous fibers of a reinforcing material to form...
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WO/1994/007668 |
A method of manufacturing efficiently a structure of a fiber-reinforced thermoplastic resin having a very good appearance of the molded surfaces thereof and excellent mechanical property, characterized in that, in order to manufacture a ...
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WO/1994/007669 |
A method of manufacturing efficiently and economically a structure of a long-fiber-reinforced thermoplastic resin having a high mechanical strength, characterized in that, in order to manufacture a structure of a resin-reinforced thermop...
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WO/1994/002259 |
A printing blanket (11) which resists gauge loss throughout its useful life when subjected to printing nip pressures by retaining at least 95 % of its original gauge throughout the useful life of the printing blanket. The printing blanke...
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WO/1993/024292 |
A process for making a thermoformable conductive plastic laminate for use in making plastic parts adapted for electrostatic spray painting of a uniform high quality paint finish includes forming a matte release coated casting sheet (20),...
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WO/1993/023461 |
A compressible prepreg on the basis of flat support materials impregnated with duromer synthetic resins is characterized by a first synhtetic C-stage resin layer directly applied on the flat support material and by a second synthetic B-s...
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WO/1993/017182 |
Surface sheets (230) impregnated with thermosetting resin and including a layer of abrasion-resistant particles are produced by the disclosed process. The process includes a method of applying the abrasion-resistant particles by spraying...
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WO/1993/015904 |
A polymer matrix composite structure for electrical purposes is produced by taking a fibre reinforcement substrate (1) to produce a pre-form (4) of a desired shape and configuration, metallising the pre-form to provide an electrically co...
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WO/1993/015896 |
Device for sheathing thread (10) with a thermoplastic organic substance. The device (12), mounted as an angle head on an extruder (13), comprises an inlet port and a hollow mandrel, with its bore opening into a central channel (26), the ...
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WO/1993/015893 |
Process for the manufacture of a composite thread (33) formed from a plurality of filaments associated with an organic thermoplastic substance. The process consists in mechanically drawing a thread into a device (12) mounted on the cross...
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WO/1993/015896 |
Device for sheathing thread (10) with a thermoplastic organic substance. The device (12), mounted as an angle head on an extruder (13), comprises an inlet port and a hollow mandrel, with its bore opening into a central channel (26), the ...
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WO/1993/009932 |
A method is disclosed for manufacturing an elongated workpiece from fibre-reinforced curable material such as synthetic resin. The procedural steps involved are: arrangement along one rotational axis of rotatable and linearly adjustable ...
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WO/1993/008322 |
Partially or wholly melted binder particles are sprayed onto a fiber mat to form a preform. A fast, low energy method for making preforms is thus provided.
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WO/1993/001045 |
Described is a continuous process for the production of unidirectionally reinforced composite materials by impregnating a continuous reinforcement-fibre strand with a thermoplast in a bath containing a powder dispersion of the thermoplas...
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WO/1993/000209 |
The invention relates to a process for impregnating a flat, fibrous substrate material where a low-viscosity, liquid synthetic resin impregnates the material, in which the web (1) of substrate material is preheated by means (2) known per...
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WO/1992/021500 |
A method for the production of fiber reinforced plastic composites (18), in which a continuously moving array of fibers (10) is impregnated with resin and fast cured as it passes through a shadow boundary (17) created by a source of radi...
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WO/1992/021493 |
The invention provides an extruder die assembly (30) for use in the production of fiber reinforced thermoplastic product which overcomes the problem of poor wetting of the fiber filaments. The die assembly also facilitates the production...
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WO/1992/020521 |
This invention relates to an improved flexible multiply towpreg, products therefrom, and methods of production therefor. The improved flexible towpreg comprises a plurality of towpreg plies (134) which comprise reinforcing filaments (132...
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WO/1992/017331 |
There are disclosed herein laminated materials often used as facing materials in aircraft interiors, and the use of phenolic resins and unidirectional carbon fibers (14) to form a prepreg, which ultimately comprises all of the layers of ...
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WO/1992/015404 |
A fabric of multifilament bundles is coated by electrostatic powder deposition, to produce a fiber-reinforced composite web (10) that is especially well suited for lamination to produce susbtrates for circuit boards.
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WO/1992/012847 |
A long fiber, thermoplastic frame for a tennis racquet or other implement is formed of fibers of carbon or other reinforcement material, which are oriented at desired angles, and which are intimately embedded in thermoplastic resin. A fr...
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WO/1992/010364 |
Fibers may be prepregged with a dope containing polybenzoxazole or polybenzothiazole. The prepreg may be contacted with water or another nonsolvent to coagulate the polymer and form a matrix composite.
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WO/1992/009649 |
Polymeric composite materials having a decreasing concentration gradient of polymer matrix from the material's surface to the material's interior are disclosed. The disclosure also includes a process for making such materials, whereby po...
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WO/1992/008551 |
A composite material for uses including stay cables and prestressing concrete comprises high strength wire strand coated and impregnated with an impermeable and strongly adherent epoxy based resin. Impregnation and coating are effected b...
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WO/1992/003283 |
The present invention relates to a method of manufacturing a fiber-reinforced plastics material. In this method, a foam of a binding agent containing powdery thermoplastic matrix is applied onto a reinforcing fiber web which is then drie...
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WO/1992/002357 |
A novel process has been developed enabling the manufacture of shaped articles out of fibre reinforced thermoplastics. The process enables the incorporation of major amount of glass fibres by first manufacturing a flat sheet out of one o...
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WO/1992/002354 |
A process for forming media capable of being transformed into structural thermoplastic composites by forming a thermoplastic polymer material into fibrets (1); mixing the fibrets (1) with high modulus fibers (2) in an aqueous suspension;...
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WO/1992/000845 |
Apparatus for fastening together a plurality of horizontal layers of intermediate fabric material to form a stack (2) includes a first knife blade (4). The blade (4) has a forward cutting edge (6), and has a longitudinal slot (8) located...
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WO/1992/000182 |
This invention relates to a process for manufacturing composites and laminates reinforced with continuous or long fibers and/or filaments, which comprises the subsequent steps of (a) forming a preform of reinforcing material by arranging...
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WO/1991/019755 |
The invention concerns a prepreg made from uni-directional reinforcement fibres, such as glass fibres, carbon fibres or aramid fibres, impregnated with a duroplast mixture, the duroplast mixture containing an epoxy resin, a phenolic resi...
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WO/1991/019036 |
Bonding non-woven fibrous structures, especially using polyester fibers as the load-bearing elements, with electromagnetic radiation after applying an electromagnetic radiation susceptor to a polyester fiber with a high amorphous content...
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WO/1991/018741 |
In a method for manufacturing a shaped composite article by dry impregnation a matrix material (6) in a solid state is combined with a reinforcing material and the matrix material is subjected to heat treatment for converting it to a mat...
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WO/1991/016185 |
A process for cooling rubber crumb wherein the rubber crumb is presented for cooling to a first stage pneumatic conveyor containing a hot wet first stage air stream. The rubber crumb is cooled in the first stage pneumatic conveyor to a f...
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WO/1991/016136 |
An interstage separator is provided for transferring polymeric crumb from a first stage pneumatic conveyor with hot wet air, to a second stage pneumatic conveyor with cool dry air. The interstage separator is characterized by a tangentia...
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WO/1991/014044 |
Continuous process for impregnating fibres with polymer powders in which said fibres are caused to circulate in an aerosol generated by a fluidised bed, the earthed fluidisation vessel of which, and the particles constituting the fluidis...
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WO/1991/012898 |
A system and method for uniformly coating one or more fibers (10) with particles of a material is described. The method uses a vibrator preferably an acoustic speaker (17b) in a housing (17c) to fluidize the particles (P1) in a chamber (...
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WO/1991/013195 |
In the manufacture of reinforced composites having reinforcing filaments within a matrix, a filament consisting of a staple yarn spun from discontinuous fibres with low twist is subject to controlled stretching to vary the weight per uni...
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WO/1991/010547 |
The invention relates to a method of making fiber reinforced molded articles and preforms for use in the manufacture of such molded articles which includes the steps of applying a layer of reinforcing fibers, preferably glass fibers, on ...
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WO/1991/009717 |
A finishing process for water-slurried elastomers wherein a partially dewatered elastomer is presented to an enclosed, low shear, self-cleaning, long residence time dryer for drying at low temperatures in order to remove the remaining wa...
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WO/1991/008094 |
A mechanical device for impregnating reinforcing fibres with a liquid binder using fibres in the form of matt or cloth fed to a perforated rotating drum under suction and dipped into the binder, or alternatively, by dispersing the fibres...
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WO/1991/008256 |
The present invention relates to a composite base material for the preparation of composite sintered materials reinforced with long fibres, characterized in that said matrix is formed from a combination of a polymer organic material and/...
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WO/1991/008251 |
An essentially tack free prepreg article, characterized by a shelf life at about 25 oC of at least about three months, and method of making the same are provided. The prepreg article comprises at least one network of fibers which has bee...
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WO/1991/003378 |
Thermoplastic honeycomb capable of formation by expansion of a compacted ribbon stack and of repeated dips in resin solution to form densified honeycomb panels is prepared by impregnating a fiber web with a thermoplastic material which h...
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WO/1991/001621 |
The invention features various composites containing, e.g., carbon fibrils and methods for preparing these composites.
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WO/1991/000884 |
A fiber reinforced resin matrix composite material repair system is provided, which critically employs a resin comprising a catalyst of formula (I), with a multifunctional epoxy resin, the resin system being sealed in a water-proofed env...
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WO/1990/014457 |
The present invention relates to a method of manufacturing a fiber reinforced plastics material by a dry forming method. By this method the fibers are opened by carding, a web is formed of the fibers, pulverous matrix is dosed onto the w...
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WO/1990/007024 |
This invention relates to a composite sheet for a reinforcing material consisting of a web containing reinforcing long fiber bundles and a single fiber-like thermoplastic polymer fiber. This sheet is characterized in that the thermoplast...
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