摘要:
A winder including a frame. The frame includes at least one spindle configured to support at least one package, the spindle rotating about a first axis approximately perpendicular to the diameter of the package so as to draw and wind at least one strand in the form of a package, and at least one positioning and guiding device configured to position and guide at least the strand on the rotating spindle. A keeper is configured to keep the strand in contact with the positioning and guiding device.
摘要:
The present invention relates to reinforcement yarns coated with a sizing composition comprising at least one silane satisfying the formula: Si(R1)(R2)(R3)(R4) in which: R1, R2 and R3 are chosen from the following atoms or groups: —H (except in the case of R3), —Cl, —O—R5, —O—R6—O—R5, —O—(C═O)—R5, —O—R6—(C═O)—R5, R5 and R6 being chosen from hydrocarbon radicals whose main chain has from 1 to 4 carbon atoms; R4═—R7—NHR8 R7 being chosen from branched hydrocarbon radicals whose main chain has from 2 to 6 carbon atoms, R8 being chosen from the following groups: —H, —R9—NH2, —R10—NH—R9—NH2, R9 being chosen from hydrocarbon radicals containing 1 to 12 carbon atoms or from carbonyls, and R10 being chosen from hydrocarbon radicals whose main chain has from 1 to 6 carbon atoms. The glass yarns according to the invention are particularly suitable for reinforcing organic materials, the yarns and composites obtained resisting in a corrosive medium.
摘要:
Glass reinforcement strand, the composition of which comprises the following constituents, within the limits defined below, expressed as percentages by weight: SiO250 to 60%, preferably SiO2 ≧ 52% and/or SiO2 ≦ 57%; Al2O310 to 19%, preferably Al2O3 ≧ 13% and/or Al2O3 ≦ 17%; B2O316 to 25%; ZrO20.5 to 1.5%; Na2O≦1.5%, preferably Na2O ≦ 0.8%; K2O≦1.5%, preferably K2O ≦ 0.8%; R2O≦2%, preferably R2O ≦ 1%; CaO≦10%; MgO≦10%; F0 to 2%; TiO20 to 3%; RO4 to 15%, preferably RO ≧ 6% and/or RO ≦ 10%; and Various≦3%, where R2O = Na2O + K2O + Li2O, and RO = CaO + MgO. The dielectric properties of such glass compositions are particularly advantageous in the MHz and GHz ranges.
摘要:
An electrical connection part for a fiberizing installation for delivering filaments, such as glass filaments, the part being made of an electrically conducting material and having at least one contact surface. The at least one contact surface is coated with gold.
摘要:
The invention relates to a process for manufacturing a continuous yarn, and the product obtained from such process. A multiplicity of continuous filaments are formed by the mechanical drawing of a multiplicity of streams of molten thermoplastic(s) flowing from the orifices of at least one fiberizing device. A mixture, in the liquid state, is deposited on the surface of at least some of the filaments before they are brought together into at least one yarn. An absorbent mat may be continuously impregnated, with at least some of said mixture being continuously taken up by means of a rotating roller in contact with said mat, and using a sizing roller, said mixture may be deposited on the filaments while they are being drawn.
摘要:
A method for filling a receiver with expanded fibers includes the steps of feeding at least one bundle of fibers from at least one roving; introducing the at least one bundle into a portable tool having a manual gripping element, a spray nozzle, an air supply device connected for supplying air to the nozzle, an extraction system configured to hold the at least one bundle and feed the at least one bundle to the nozzle, and an inlet guide positioned to guide the at least one bundle to the extraction system; and using the air supply device to expand the fibers of the at least one bundle in said spray nozzle, and spray the expanded fibers into the receiver.
摘要:
A leasing device including at least one first part connected to a frame element of a reeler and at least one second part including a mechanism for depositing and guiding at least one thread. The first part and the second part are connected to one another such that the second part occupies a first working position, in which the thread can be deposited in the form of a reel, and a second position, in which the second part is separated from the first part, corresponding to a maintenance phase of the second part.
摘要:
An electrical connection device for supplying power to a bushing that delivers filaments, especially glass filaments. The device includes a connection jaw clamp and an electrical connection piece with no protective sheath and including a flexible body, having one end that is connected to the jaw clamp and a free opposite end.
摘要:
The invention relates to the manufacture of composite sheets having a multiaxial fibrous reinforcement, which involves: forming a unidirectional lap of reinforcing threads, at least 50% by weight of which are co-blended threads consisting of reinforcing filaments and of filaments of an organic material which are intimately mixed, giving the said lap a cohesion allowing it to be lapped, lapping this lap on a support in movement, in a transverse direction in relation to the direction of movement, heating the reinforcing-thread/organic-material assembly, which is displaced in the direction of movement, and setting it by the action of heat, if appropriate by applying pressure, then cooling it to form a composite band, and collecting the said band in the form of one or more composite sheets. The present invention also relates to an apparatus for carrying out the method and to the products obtained.
摘要:
The present invention relates to a process for manufacturing a moulded part, in which the moulded part is obtained by moulding at least one composite sandwich, the said sandwich incorporating an expansion agent that reacts during moulding. The invention also relates to the moulded part obtained and to the sandwich used.