1079 results about "Filament winding" patented technology

A blend of a macrocyclic polyester oligomer and a polymerization catalyst as a one component ready-to-use material with a long shelf life enables production of parts from macrocyclic polyester oligomers without the modification of existing equipment, thereby reducing time and cost of manufacture while expanding the application of macrocyclic polyester oligomers. In this blend material, the macrocyclic polyester oligomer remains intact in solid state at ambient conditions. Upon melting, the blend material initially forms low viscosity fluid, and then rapidly polymerizes to form high molecular weight polyesters which subsequently solidify to form crystalline polymers. In the case of certain macrocyclic polyester oligomers, for example, poly(1,4-butylene terephthalate), demolding can take place at the polymerization temperature, e.g., at about 180° C. to 200° C., because the resulting polyester polymer solidifies fairly rapidly at that temperature without cooling. In one aspect, the invention generally features a blend material that includes a macrocyclic polyester oligomer, a polymerization catalyst, and optionally, a filler. In another aspect, the invention generally features a process for preparing a blend material. In yet another aspect, the invention features processes such as rotational molding, resin film infusion, pultrusion, resin transfer molding, filament winding, making and using powder-coated or hot melt prepreg, compression molding, and roll wrapping, which use the blend material.

Integrally stiffened and formed, load carrying structures comprising a plurality of elongated thin-walled tubes placed co-extensively in a complementary side-by-side fashion which together form a hollow structure having a desired external contour. Integral skins forming the external and internal surfaces of the structure cooperatively therewith. The structure can be formed with an underlying internal support member spanning the interior of the load carrying structure, thereby connecting opposite sides of the structure together. Also, each of the tubes are wound with fibers in controlled orientations generally paralleling the direction of the loads applied to the tubes to optimize the strength to weight ratio of the tubes.

The present invention provides an implantable prosthesis and more specifically, an implantable tubular textile prosthesis comprising a biocompatible fabric having inner and outer surfaces and first and second ends; the fabric having a textile construction comprising cold drawn PTFE yarns having a substantially uniform denier and high molecular orientation. Use of cold drawn PTFE yarns result in implantable prostheses that have excellent abrasion resistance, strength and lubricity properties. Useful textile constructions include weaves, knits, braids, filament windings, spun windings and combinations thereof. The prostheses of the present invention are lubricious and have characteristics that closely resemble the properties of a natural body lumen.

Filament winding process based on the mixing initiated polymerization of an at least two-component resin system, the system comprising an organic polyisocyanate and a polyfunctional active hydrogen composition as the principle isocyanate reactive species. The invention further provides improved composite articles produced by the filament winding process.

A sizing composition containing an epoxy film former, a urethane film former, a silane package that includes an aminosilane coupling agent and an epoxy silane coupling agent, a cationic lubricant, a non-ionic lubricant, an antistatic agent, and at least one acid is provided. The epoxy resin emulsion includes a low molecular weight liquid epoxy resin and one or more surfactants. The epoxy resin preferably has an epoxy equivalent weight from 185-192. The sizing composition may optionally contain a methacryloxy silane. The sizing composition may be used to size glass fibers used in filament winding applications to form reinforced composite articles with improved mechanical properties, wet tensile properties, improved resistance to cracking, and improved processing characteristics.

A high production net shape filament winding manufacturing process and resulting products are disclosed. The manufacture of bicycle frame and their components from filament wound components which have been cut from a section of filament wound stock is disclosed. Also disclosed is a bicycle frame and its manufacturing process and a composite bicycle fork and components thereof.

Thermosetting resin pipes and pipe fittings are provided which are prepared by polymerizing a cyclic olefin monomer in the presence of a ruthenium or osmium metathesis polymerization catalyst. These articles may be prepared by various methods, such as centrifugal casting. Reinforced articles may also be prepared by filament winding.

A multi-function vacuum bag for use in the manufacture of composites, wherein the vacuum bag may be configured to provide all-in-one capabilities, namely to function as the vacuum bag, a caul or caul sheet, release layer and/or a breather, as well as to provide other functions. Specifically, the multi-function vacuum bag allows a separate breather or breather material, a separate caul or caul layer, and a release or release layer all to be eliminated, if desired, as the multi-function vacuum bag is capable of performing the functions of each of these once formed. Furthermore, the multi-function vacuum bag may be used with various composite manufacturing process, such as VARTM or resin infusion processes, various vacuum bagging processes, filament winding processes, and others.

The present invention relates to apparatus and methods for winding filament to create a structure. In one embodiment, the invention includes the application of filament to a rotating mandrel to create a desired shape. The invention includes the filament winding of both simple and complex shapes.

The invention discloses a manufacturing method for a manual patch of a heat insulating layer of a filament winding engine shell. By controlling the preparation environment of the manual patch, an appropriate adhesive is selected, a multilayer patching method is adopted to reduce the film thickness of a single-layer manual patch and patch size, then a fiber yarn is used for preloading pressure, and the heat insulating layer is repaired to increase the internal mass and shape structure size of the heat insulating layer after curing, thus manufacturing the manual patch. The manufacturing method solves the problems of high film hardness, poor self-adhesion and mutual viscosity, and high patching difficulty of an EPDM material, the thickness of the heat insulating layer meets the design requirements, and an EPDM anatomical layer is compact and smoothly passes engine ground test assessment for a few times.

A filament winding apparatus that efficiently and orderly winds a fiber bundle with respect to a mandrel in a short period of time. A supporting board supports the mandrel, and a helical winding head supplies and guides the fiber bundle towards the mandrel. The helical winding head includes a group of guide tubes radially arranged on a circumferential surface of a guide ring, and a tube operation mechanism that reciprocates the guide tube along a tube axis center direction. The guide tube is moved closer to a circumferential surface of the dome part when the guide tube is facing a dome part of the mandrel such that the distance between the winding position of the fiber bundle and the guide tube at the dome part can be reduced, and the fiber bundle is orderly wound according to an appropriate winding trajectory.

This invention relates to a high-pressure gas jar for the carbon fiber compound material and it's making method, wherein it uses a fiber wrapped compound material. The capability of the carbon fiber compound material as follows: the metal liner is made of the titanium alloy, wherein the proportion between its stretching bending strength and its elasticity FTY/E is at least 0.6%, its stretch rate is at least 5%, and the shape of its closing head (1-1) is the three point circle. And the metal liner (1) is made by the following steps: spinning and stretching the closing head (1-1), crystallization annealing processing, end welding and integral welding; and the carbon fiber compound material layer (2) is the carbon fiber layer or the epoxy wrapping layer. The made method includes the following steps: fiber drying, glue confecting, glue immersing, wrapping, and solidified forming. Using this method can make the light weight, well gas sealing capability, high strength carbon fiber compound high-pressure gas jar.

The present invention relates to a fiber-winded composite material pipe for water supply and drainage. It is characterized by that its pipe wall is divided into three layers, including internal winded layer, intermediate winded layer and external winded layer. Its intermediate winded layer is made up by using thermoplastic composite material, its internal winded layer and external winded layer are made up by using filament and/or continuous fiber reinforced thermoplastic or thermosetting composite material.

A roller assembly for an electric razor includes a generally cylindrical roller driven by a drive arrangement to rotate about a central axis. The roller supports a number of blades, each having a cutting edge externally exposed and extending parallel to the central axis. Each blade moves across the skin of a user so as to slice through hair projecting from the skin of the user. The roller assembly further includes at least one filament wond in a helical path around the roller such that a gap between adjacent portions of the filament along the cutting edges is no more than about 8 millimeters.

The invention relates to a pipeline structure used for transporting different media such as solid, liquid and gases and a manufacturing process thereof. A continuous filament wound and reinforced thermoplastic pipe is characterized in that a tubular pipeline liner layer, a pipeline structural layer and a pipeline outer protective layer are wound to manufacture a whole structure; the pipeline structural layer is positioned between the pipeline liner layer and the pipeline outer protective layer; the pipeline liner layer and the pipeline outer protective layer are made of thermoplastic plastics; and the pipeline structural layer is made of continuous filaments. The pipeline provided by the invention has better strength, rigidity, shock resistance, fracture toughness, temperature and corrosion resistance, seepage resistance and the like than the traditional thermoplastic or thermosetting pipelines, can be widely applied in the fields such as water supply and sewerage works, petrochemical industry, coal gas and natural gas transportation, seawater desalination and nuclear power and can be suitable for special environments and requirements such as heavy calibre, high rigidity, high strength and high corrosivity.

The invention discloses a transverse direction strength improving method of fiber reinforced resin pultrusion, which comprises the following steps: distributing fiber, gumming, premoulding, heating, solidifying, drawing, cutting, premoulding, heating, solidifying, increasing transverse fiber, connecting with premoulding material tightly. The invention improves drawing-proof strength, pressure-proof, bending-proof strength and cutting-proof strength of FRP, which increases bond force between FRP section bar and other materials.

A method for forming a sheathed wire includes the steps of axially advancing a core through a sheathing zone; wrapping a sheathing fiber around the core in the sheathing zone; and providing, in the sheathing zone, a series of microelectronic chip elements each provided with a wire section, in such a way that the sheathing fiber that wraps around the core also wraps around a chip element and the wire section thereof to form a sheathed wire incorporating spaced-apart chip elements.

A wet filament winding method and apparatus for producing a consolidated metal matrix composite is described. The methods are directed to winding a softened metal infiltrated fiber bundle and layering the resulting softened metal infiltrated fiber bundle onto a rotating mandrel in a prescribed pattern on the surface of the mandrel to form a consolidated metal matrix composite. Upon cooling, the matrix metal solidifies and the resulting consolidated metal matrix composite may be removed from the mandrel. The consolidated metal matrix composites may be produced in a variety of shapes, such as cylinder, a tapered cylinder, a sphere, an ovoid, a cube, a rectangular solid, a polygonal solid, and panels.

Helical winding is reliably carried out in a plurality of patterns at different angles in a short period of time. A filament winding apparatus for winding fiber bundles onto the surface of a mandrel includes a helical winding head for use in helical winding of the fiber bundles onto the mandrel. The helical winding head includes at least two guide arrays, each including a plurality of guide portions disposed along a circumferential direction of the mandrel, and a repositioning mechanism capable of repositioning the guide portions by rotating each guide array relative to another.

The invention relates to a continuous preparation method of composite material tube, comprising two basic processes of: (1) winding: winding a circle on a surface to be processed after the continuous fiber prepreg is pre-heated and forming a prepreg winding layer; and (2) binding: binding the continuous fibers of the impregnated resin matrix glue solution to the surface to be processed, wherein the fibers are neither overlapped nor separated and are distributed to the surface to be processed uniformly and continuously to form a fiber binding layer; when layering, the process (1) and the process (2) are carried out in turn on the same device; and the composite material tube is formed through curing and demoulding. According to the invention, the fiber layering layer of the fiber enhanced composite material tube can be layered at any angle from 0 to 90 degrees through the manner of winding fibers and binding prepreg in turn; and the fiber enhanced composite material tube has higher circumferential strength, excellent axial strength and bending rigidity.