B29C70/526

DEVICE AND METHOD FOR PRODUCING PULTRUDED ARTICLE

A device for producing a pultruded article is provided with: a mold in which an intermediate molded article comprising reinforcing fibers impregnated with a thermosetting resin is heated and hardened; and a pultrusion device that causes a pultruded article generated by heating and hardening the intermediate molded article in the mold to be pultruded from the mold. The mold comprises a pressing member that is elastically deformable and that presses the intermediate molded article.

Pultrusion of continuous sections having discontinuous cross-sectional profile

A pultrusion device and method are provided for producing a fiber-reinforced continuous section which has a second cross-sectional profile that is discontinuous in a direction of pultrusion with a press forming device for shaping the continuous section. The press forming device includes a first shaping device for producing the continuous section with a continuous cross-sectional profile and a second shaping device, which follows on from the first shaping device in the direction of pultrusion, for shaping the second discontinuous cross-sectional profile of the continuous section. A punching tool is arranged between the first shaping device and the second shaping device and is designed to bring about a local change in shape of the continuous cross-sectional profile, at least in a defined portion of the continuous section, in order to produce a first discontinuous cross-sectional profile of the continuous section.

Methods and equipment for forming tubes of fibrous material

Equipment for forming a tubular rod from a bundle of fibrous material comprising a mandrel constructed to form a space within the bundle of fibres; the mandrel includes a passage for delivering a treatment fluid to facilitate the formation of the fibres into a tubular structure as the fibre bundle as the bundle passes over the mandrel.

Die-based composite fabrication

Systems and methods are provided for forming composite parts. One embodiment is a method that includes receiving flat unidirectional tape that is continuous and fiber-reinforced, and drawing the tape through a fixed die that heats and plastically deforms the tape into a gap filler having a non-flat cross section.

Device for impregnation and curing of continuous fibers with resin

An apparatus for preparation of a continuous composite element formed of reinforcement fibers impregnated with a resin that includes photo-initiators for curing. Reinforcement fibers are pulled through a vacuum chamber (110) and then a vertical impregnation chamber (122) where impregnation with the resin occurs. The elongate composite is then deposited onto a rotating wheel of conformation (140). During rotation, a radiation source (146) such as e.g., LEDs (light emitting diodes) are used to activate the photo-initiators and provide at least partial curing of the resin. From the wheel of conformation, the continuous composite element is passed along a vertical course (148) where additional radiation sources (150) activate the photo-initiators and provided additional curing.

Rapid response fabrication of marine vessel platforms
20200269530 · 2020-08-27 ·

Marine vessels, including combatant (naval) vessels are produced inexpensively without requiring the use of as many skilled personnel as is conventional. The vessel produced has a high strength metal truss structure (both above and below the water line) capable of carrying major hull loads. A number of curved or doubly curved composite (e. g. GRP) panels produced by vacuum assisted resin transfer molding are fastened by bolts, marine adhesives, and/or rivets to the below water line portions of the truss structure where necessary to handle slamming loads and to reduce water resistance and wake. Substantially flat composite pultruded panels are fastened to the truss structure both above the water line, and below the water line where the resistance to slamming loads and reduction of water resistance and wake are not critical. Necessary equipment is installed within the open truss volume before the above-water-line panels are fully installed.

MANUFACTURING FIBER-REINFORCED THERMOPLASTIC CONCENTRATES
20200269529 · 2020-08-27 ·

A fully impregnated fiber-reinforced thermoplastic granule includes a fiber core impregnated with a thermoplastic resin and coated with the resin and subsequently polymerized to form a thermoplastic. The granule is formed in a continuous process including a continuous fiber strand being coated and impregnated with a thermoplastic resin, curing the thermoplastic resin, and cutting the fiber and thermoplastic into granules of a desired length. The continuous process results in a uniform, fully impregnated fiber core in the granule which results in a longer reinforcing fiber for added strength in subsequently produced products formed from the granules.

Device and method for manufacturing fiber-reinforced thermoplastic resin tape

Provided are a device and a method capable of suitable cooling of a fiber bundle without hindering nozzle maintenance work or preparation work before the start of manufacturing. The provided device includes a nozzle which allows the fiber bundle impregnated with thermoplastic resin to pass therethrough while forming the fiber bundle into a tape shape, a cooling roller for cooling the fiber bundle, and a supporting device. The supporting device supports the cooling roller rotatably so as to allow the cooling roller to be moved between a cooling position at which an outer periphery surface of the cooling roller makes contact with the fiber bundle having passed through the nozzle and a retraction position away from the nozzle beyond the cooling portion.

EXTRUDER AND LFT EXTRUSION MEMBER MANUFACTURED THEREBY
20200238641 · 2020-07-30 ·

An extruder and an LFT extrusion member manufactured thereby, and the extruder uses a long fiber thermoplastic (LFT) as a raw material to produce LFT extrusion members such as LFT sheets, pipes and profiles by a continuous extrusion molding process. The structural improvement of the extruder screw, including the screw body having three different thread groove deep sections, in sequence, a feed section, a compression section and a metering section, so that the LFT extrusion member produced by the extruder has high strength, high stiffness, high dimensional stability, low warpage and resistance to creep.

Method of manufacturing a composite material

Method of manufacturing a structural member includes moving fibers (130) along an assembly line (100), applying binder to spaced apart fibers (130) extending across a first area, and applying a traction agent (178) to at least one of the fibers and the binder. A tapered die (180) has a first portion (195) with a first greater diameter positioned to receive the fibers and a second portion with a second lesser diameter positioned downstream of the first portion. Guiding the fibers along the die and decreasing a distance between the plurality of fibers with the die. After decreasing the distance between the plurality of fibers, the fibers extend across a second area that is smaller than the first area, and the plurality of fibers are shaped with a shaping station. Traction agent increases friction between at least one of the fibers and either an adjacent fiber or the die during shaping.