摘要:
The process of manufacturing a thermoplastic organic material containing reinforcing fibers and optionally mineral materials and organic additives by combining the fibers and materials in an extruder, and introducing at least some of the organic material into the extruder in the form of continuous filaments or fibers.
摘要:
Drawing, from a first installation, organic filaments in the form of one or more layers which converge toward a same point, and drawing, from a second installation, glass filaments which are joined together to form at least one strand. Guiding structure is provided to laterally introduce the glass strand into the area defined by the organic filaments before it is combined with the filaments at their point of convergence. A blowing device (48, 36) is also provided either outside or inside the area defined by the organic fibers.
摘要:
An apparatus for manufacturing a strand composed of organic filaments and glass filaments for use in the production of composite materials. This apparatus comprises at least one die, which is supplied with molten glass, and at least one drawing head, which is supplied under pressure with organic thermoplastic material, and from which are simultaneously drawn continuous filaments that are combined to form a composite strand. The drawing head comprises a central passage through which filaments of glass are drawn, and is shielded by a hood. The top of the hood includes an opening situated in the centerline of the passage, and the bottom of the hood is formed of a wall which surrounds the drawing head and extends below the level of the bottom of the head. The drawing head is connected with a device for cooling the organic filaments.
摘要:
An apparatus and process for the production of a composite thread of glass and of organic material wherein continuous filaments of thermoplastic organic material are mixed in the form of a sheet with a bundle or sheet of glass filaments, with the speed of the thermoplastic filaments during their penetration into the bundle or sheet of glass filaments being greater than the speed of drawing of the glass filaments.
摘要:
A method and apparatus for producing a composite thread formed by the association or blending of continuous glass filaments and continuous filaments thermoplastic organic matter. The thermoplastic filaments are, while in the form of a sheet, blended with a cluster or sheet of glass filaments after having been heated to a temperature in excess of their transformation temperature, stretched and then cooled in their stretched state.
摘要:
The present invention relates to a process for manufacturing a composite thread formed of a plurality of filaments combined with a thermoplastic organic material, which consists in mechanically entraining a thread in a device mounted in the manner of a cross head at the end of an extruder and injecting the material in the direction of the thread and concentrically thereto at a constant maximum radial pressure of less than 50 bars.
摘要:
Composite yarn comprising an intimate mixture of glass filaments and thermoplastic filaments, wherein said composite yarn is coated with an aqueous sizing composition containing at least one additive in the form of a fatty acid ester; and the aqueous sizing composition per se.
摘要:
The present invention relates to a device for coating a thread with a thermoplastic organic material. This device, which is mounted in the manner of a cross head at the end of an extruder, comprises an inlet aperture followed by a hollow punch, of which the conduit opens into a central duct, the said duct being connected to the extruder by way of a supply chamber, part of this device being movable or removable, and displacement of the said part enabling the said device to be opened and closed along its entire height, from its periphery to its axis. Application to the production of composite products.
摘要:
The invention concerns a method for making continuous coextruded intermingled glass filaments and continuous thermoplastic organic filaments that enable non-spinnable compounds to be incorporated at the thermoplastic filaments. The invention is characterized in that the thermoplastic filaments are obtained by coextrusion of a thermoplastic material acting as core and a thermoplastic material containing at least one non-spinnable compound. The invention also concerns a device for implementing the method. The resulting composite yarn is provided with specific core properties provided by the non-spinnable compounds.
摘要:
The subject of the invention is a device for manufacturing a composite yarn formed by the combination of continuous glass filaments and continuous filaments of a thermoplastic organic substance, comprising, on the one hand, at least one bushing which is fed with glass, the lower face of which is provided with a multiplicity of orifices from which a multiplicity of glass filaments is drawn, and is associated with a coating device and, on the other hand, at least one extrusion head fed with a molten thermoplastic organic substance, the lower face of which is provided with a multiplicity of orifices from which a multiplicity of organic filaments is drawn, the said head being associated with a drawing device comprising at least two drums and with a venturi device which projects the organic filaments into the sheet formed by the glass filaments, and means, common to the bushing and to the extrusion head, which enable the composite yarn to be assembled and drawn, for example by a winding device such as a bobbin winder provided with spindles, in which an optical device for detecting the sheet of thermoplastic filaments running through a defined region is arranged between the drum-type drawing device and the venturi device, the said optical device being connected to a circuit which controls the speed of rotation of at least one of the drums.