Embodiments of the present disclosure provide an ex-situ preparation method for a composite molded body. The preparation method comprises: providing a porous support, a first component, and a second liquid component; contacting the first component with the porous support; contacting the second liquid component with the first component and/or the porous support, in which process the first component and the second liquid component do not undergo a chemical reaction, and the second liquid component remains in a liquid state; and treating the first component and the second liquid component such that the first component and the second liquid component undergo a chemical reaction to become a solid, or undergo phase transformation toughening and solidification molding. The present disclosure discloses an advanced composite material manufacturing technology, and relates to a low-cost and easy-to-operate ex-situ liquid molding preparation method. In the method, core reaction components are separated spatially, and two sub-processes of physical flow and chemical reaction are separated chronologically, thereby greatly simplifying the liquid molding technique. The “ex-situ” preparation method is applicable to liquid molding manufacture of thermosetting resins, liquid molding and toughening of thermosetting composite materials, and liquid molding manufacture of thermoplastic composite materials. By means of the “ex-situ” liquid molding, some resin materials originally unsuitable for liquid molding can be modified into liquid-moldable materials, thereby expanding the options and types of resin materials for liquid molding.

Provided is a method for manufacturing a fiber reinforced resin molded article capable of effectively suppressing formation of a weld line, and such a manufacturing device thereof. Even with multiple gates (resin inlets), resin is poured from a second gate (second resin inlet) when resin flow is detected at the second gate (second resin inlet), and then the resin poured from a first gate (first resin inlet) and the resin poured from the second gate (second resin inlet) are made smoothly meet.

The present disclosure concerns a method for manufacturing a composite panel including a cellular central core interposed between two skins. The manufacturing method includes the steps of manufacture of an element with a cellular structure comprising a cellular core structure interposed between two layers of structural plies intended to form the skins, positioning of the element with a cellular structure within a mold, formation of drains on either side of the cellular core structure, infusion of the element with a cellular structure so as to impregnate it with a resin, carrying out a draining of the resin through the drains in the element with a cellular structure during the infusion step, the drains having a geometry configured to provide draining, and polymerization of the impregnated element with a cellular structure to form the composite panel.

A composite manufacturing apparatus includes a width determining mechanism and a gas supplier. The width determining mechanism has a body and a gas passage. The body has a path configured to allow a tape material including fibers impregnated with a resin to pass therethrough. The path has a bottom surface and a pair of wall surfaces. The pair of the wall surfaces form a gap that gradually decreases. The gas passage is provided inside the body and formed by the bottom surface having a plurality of through holes, and is in communication with the plurality of through holes. The gas supplier is configured to supply gas to the gas pass age.

Presented are manufacturing control systems for fabricating composite-material structures, methods for making/operating such systems, and resin transfer molding techniques for ameliorating race-tracking effects in fiber-reinforced polymer panels. A method for forming a composite-material construction includes confirming, via a system electronic control unit (ECU), that a fiber-based preform is placed in a mold cavity and that opposing mold segments of the molding apparatus are sealed together. A filler, such as a compressible bladder, a cluster of spring-biased pins, or a spray-chopped fiber bed, is introduced into a void between the fiber-based preform and a tool face of one mold segment to thereby eliminate an unwanted resin race track. The system ECU commands a resin pump to inject resin through a primary gate of the molding apparatus and into the mold cavity to thereby impregnate the fiber-based preform with the resin. One or more vents operate to evacuate air from the mold.

Provided is a method for manufacturing a fiber reinforced resin molded article capable of effectively reducing the occurrence of a preform with poor resin impregnation, and such a manufacturing device thereof. After it is detected that a predetermined amount (the same amount) of resin has been individually poured into a plurality of cavities provided in a mold, the fiber layers of preforms are impregnated (compressively filled) with resin. Pressure sensors for detecting a resin injection amount are used. When closing runners, a small gap is formed in the runners.

A molding method is performed for molding a composite material in which resin is injected in a state in which a fiber base material is disposed in a cavity formed in a metal mold and the resin is cured to form the composite material. The molding method includes enhancing wettability of a portion of the fiber base material, and disposing the portion of the fiber base material in a narrow portion in which a gap constituting the cavity is smaller than other locations.

A resin line is provided with a corrugated pipe that has a wall with individual circumferentially arranged through openings. Sections of the wall are circumferentially closed. The wall has a cross-sectional shape of non-rotational symmetry transverse to a longitudinal center axis and is divided in relation to the cross-sectional shape of non-rotational symmetry into a first part and a second part. The first part has a flattened base extending in a transverse direction transverse to the longitudinal center axis across a length of the corrugated pipe. The second part has an arc shape extending in a direction of height transverse to the longitudinal center axis across the length of the corrugated pipe. The flattened base has a width measured in the transverse direction that is larger than a height of the arc shape measured in the direction of height.

A method and apparatus for constructing a tubular assembly 40 comprising an inner portion (24) and a further portion (23) surrounding the inner portion. The inner portion (24) comprises reinforcement (37) and the further portion (23) being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus comprises an assembly station (220) comprising a wall (253). The apparatus comprises means for advancing the inner portion (21) along a first path (231) extending passed the wall (253), and means for advancing the strip (50) along a second path (232) and causing the strip to encircle the wall (253) and thereby wrap about and surround the inner portion (21). The apparatus further comprises means (321) for introducing resinous binder into the reinforcement (37) as the strip (50) is being wrapped about the inner portion (21).

A mold for resin impregnation molding includes an accommodating portion which is able to accommodate a container body around which a fiber bundle is wound, a storage portion which is able to store an uncured resin having fluidity, a flow path which causes the resin to flow from the storage portion to the accommodating portion, and a pressure control unit which controls a pressure which causes the resin stored in the storage portion to flow through the flow path to the accommodating portion.