A thermoplastic composite material comprising, a fiber bundle having a polypropylene emulsion impregnated therein and having a plurality of reinforcing fibers lined up in a predetermined direction, and satisfies the following conditions (1) to (4); and a formed body: (1) A void content of the thermoplastic composite material is 3% or less, (2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less, (3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and
(4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.

A composite filament for use in additive manufacturing such as fused filament fabrication is described along with methods of its construction and use. The composite filament includes a single continuous filament (e.g., a continuous carbon roving) and a polymer (e.g., a high glass transition polymer) in intimate contact. The composite filament is formed through immersion of the continuous filament in a solution of the polymer. The composite filament can be combined with an additional formation material in an additive manufacturing process.

The present invention is a method of producing a coating liquid-impregnated reinforcing fiber fabric 1b, including allowing a reinforcing fiber fabric 1a to pass substantially vertically downward through the inside of a coating section 20 storing a coating liquid 2 to provide the reinforcing fiber fabric 1a with the coating liquid 2; wherein the coating section 20 includes a liquid pool and a narrowed section which are in communication with each other; wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber fabric 1a, wherein the narrowed section has a slit-like cross-section and has a smaller cross-sectional area than the top side of the liquid pool, and wherein the vertical height of the portion whose cross-sectional area decreases continuously in the liquid pool is 10 mm or more.

Manufacture of a pre-impregnated fibrous material which contains continuous fibers and a thermoplastic matrix, the material being made as a plurality of unidirectional parallel ribbons or sheets, and the method involving a step of pre-impregnating, in dry conditions, N parallel strands divided into X groups of Ni strands, by the thermoplastic matrix in powder form in a tank, ΣNi=N et X 3, one thereof from each series being immersed in the powder, each group of strands running on the same number Y of tensioning parts, and the parallel strands being separated by a spacing at least equal to the width of each strand.

In order to provide a thermally conductive polymer-based resin that may be molded using a range of thermoplastic manufacturing techniques, a composition includes a thermoplastic polymer and/or elastomer, a polymer fiber, a binding agent, and a thermally conductive filler. The composition includes from 40 to 80 volume percentage of a thermoplastic polymer and/or a thermoplastic elastomer, from 5 to 30 volume percentage of a polymer fiber, from 0.1 to 20 volume percentage of a binding agent, and from 10 to 40 volume percentage of a thermally conductive filler. The polymer fibers and thermally conductive fillers are combined to create a hybrid thermally conductive particle for better feeding in standard plastic processing methods. The polymer fiber has an aspect ratio greater than 10. The filler has a thermal conductivity greater than or equal to 10 W/m-K. The composition is characterized by a thermal conductivity of at least 1 W/m-K.

A braided radius filler, including at least three carbon yarns wherein at least one carbon yarn is a continuous carbon filament yarn and at least two carbon yarns are braided together with each other, wherein at least one continuous carbon filament yarn contains a resin composition in a concentration in the range from 1 to 10 wt. % relative to the fiber weight of the continuous carbon filament yarn and the total amount of resin in the radius filler is less than 10 wt. % relative to the total fiber weight of the radius filler and the braided radius filler is braided according a formula. A further object pertains to a method for producing the radius filler and a composite comprising the radius filler.

A composite filament for use in additive manufacturing such as fused filament fabrication is provided, along with methods of its construction, and use incorporation application of sonic energy during the composite filament during initial formation. The composite filament allows for formation of work pieces having a complicated shape that can incorporate continuous filaments in multiple directions and orientations, which can lead to the production of stronger and more useful composite structures.

A shaping apparatus includes a stand that includes a shaping surface on which a product is shaped; a feeder that feeds a linear material obtained by impregnating continuous fiber with resin; a pressing portion that presses the material fed by the feeder against the stand; and an angle setting portion that sets an angle formed between the material fed from the feeder to the pressing portion and the shaping surface to be an acute angle.

The present invention relates to an aqueous dipping composition for coating a textile reinforcing material, comprising 4% to 50% by dry weight of at least one rubber latex, 0.1% to 4.5% by dry weight of at least one blocked isocyanate, 0.02% to 20% by dry weight of at least one filler, 0.2% to 4% by dry weight of at least one epoxy group-containing compound, and 0.1% to 2% by dry weight of at least one polymer with carboxylic acid functional groups, wherein the amounts in % by dry weight are based on the total weight of the aqueous dipping composition. The composition is essentially free of resorcinol, resorcinol precondensates, formaldehyde and formaldehyde-releasing substances. The present invention relates to a use of such a composition, a process for coating a textile reinforcing material with this composition, a coated textile reinforcing material and a respective elastomeric article comprising the same.

The present invention relates to an aqueous dipping composition for coating a textile reinforcing material, comprising 4% to 40% by dry weight of at least one rubber latex, with the proviso that the rubber latex is no isoprene rubber latex, 0.1% to 10% by dry weight of at least one blocked isocyanate, 1% to 20% by dry weight of at least one isoprene rubber latex, and 0% to 6% by dry weight of at least one epoxy group-containing compound, wherein the amounts in % by dry weight are based on the total weight of the aqueous dipping composition. The composition is essentially free of resorcinol, resorcinol precondensates, formaldehyde and formaldehyde-releasing substances. The present invention relates to a use of such a composition, a process for coating a textile reinforcing material with this composition, a coated textile reinforcing material and a respective elastomeric article comprising the same.