Toho Tenax Europe Gmbh

Toho Tenax Co., Ltd.

Teijin Limited

Teijin Carbon Europe Gmbh

Ronny Wockatz

Shuhei Yoshida

Yosuke Nakamura

Hidekazu Yoshikawa

Dirk Ortmanns

Johannes Rehbein

Vera Richter

A textile substrate made from reinforcing fibers for the production of composite-material preforms, Including an unidirectional composite consisting of at least one flat layer of multifilament reinforcing yarns arranged alongside and parallel to one another and joined by transverse threads, whereby a nonwoven of thermoplastic polymer material is arranged on the at least one flat layer of multifilament reinforcing yarns and is adhesively bonded to the flat layer of multifilament reinforcing yarns. The textile substrate wherein the transverse threads have a core/sheath structure with a first component forming the sheath and a second component forming the core, wherein the first component has a lower melting point than the second component, the first component is a fusible thermoplastic polymer material and the multifilament reinforcing yarns arranged alongside one another are joined together via the first component of the transverse threads by meltbonding.

Textile substrate made of reinforcement fibers

Method for producing a textile unidirectional fabric, wherein at least one planar layer of multi-filament reinforcement threads arranged parallel to each other are woven with each other over transverse threads, wherein transverse threads having core-sheath structure and titer of 10 to 40 tex are used as transverse threads, wherein transverse threads have a first component, which structures sheath, and second component, which structures core, wherein first component has lower melting temperature than second component, first component is meltable thermoplastic polymer material and, via first component of transverse threads, adjacently arranged multi-filament reinforcement threads are connected to each other by hot melting, wherein alleys are formed in unidirectional fabric by interweaving multi-filament reinforcement threads together with transverse threads, by means of which a permeability of 10 to 600 l/dm2/min can be established. Preferred embodiment relates to method for producing unidirectional fabric having fleece. Further, a fiber preform, produced from unidirectional fabric.

Method for producing a textile unidirectional fabric

A non-crimp fabric includes at least two superimposed layers made from multifilament reinforcing yarns arranged parallel to each other, and at least one layer made from a non-woven made from thermoplastic polymer material on and/or between the layers made from multifilament reinforcing yarns, wherein the non-woven includes a first polymer component and a second polymer component whose melting temperatures lie below the melting or decomposition temperature of the reinforcing yarns. The first polymer component has a lower melting temperature than the second polymer component, and the first polymer component is soluble in epoxy matrix resins, cyanate ester matrix resins, benzoxazine matrix resins, or mixtures thereof. The second polymer component is not soluble in epoxy matrix resins, cyanate ester matrix resins, benzoxazine matrix resins, or mixtures thereof. A preform is made from the non-crimp fabric.

Multiaxial non-crimp fabrics having polymer non-wovens

A multiaxial non-crimp fabric comprising at least two superimposed layers of multifilament reinforcing yarns arranged within the layers parallel to each other and abutting parallel together. The reinforcing yarns within one layer as well as adjacent layers are connected and secured against each other by sewing threads forming stitches proceeding parallel to and separated from each other at a stitch width w, the sewing threads form stitches with a stitch length s, and the zero-degree direction of the non-crimp fabric is defined by the sewing threads. The reinforcing yarns of the layers are symmetrically arranged in respect to the zero-degree direction of the non-crimp fabric and form an angle &#x3b1; to the zero-degree direction, the angle not being equal to 90&#xb0; or 0&#xb0;, and the sewing threads have a linear density from 10 to 35 dtex.

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Düsseldorf, Germany

Ronny Wockatz