Method for producing fiber composite semi-finished products by means of a round braiding technique
AssigneeEADS Deutschland GmbH
InventorsAndreas Gessler, Franz Maidl
Life of this patent
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Abstract
Method of producing fiber composite semifinished products by means of a circular braiding technique, a braiding core being braided with braiding threads which are unwound by means of bobbins circling concentrically about the braiding core in different directions, characterized in that the bobbins of one circling direction are fitted with reinforcing threads and the bobbins of the opposite circling direction are at least partially fitted with supporting threads, the supporting threads at least partially consisting of thermoplastic threads.
Claims11
A method of producing fiber composite semifinished products by a circular braiding technique, comprising:
- i) braiding threads onto a core by unwinding said threads from bobbins that circle concentrically about the core, in different directions;
- ii) fitting the bobbins of a first circling direction with reinforcing threads;
- and
- iii) fitting the bobbins of an opposite circling direction at least partially with supporting threads that are made at least partially of melting threads;
- and
- iv) at least partially melting said melting threads by heating the threads which have been braided onto the core, to a temperature at which the braiding is infiltrated by a matrix system.
A method of producing fiber composite semifinished products by a circular braiding technique, comprising:
- braiding threads onto a core by unwinding said threads from bobbins that circle concentrically about the core, in different directions;
- fitting the bobbins of a first circling direction with reinforcing threads;
- and
- fitting the bobbins of an opposite circling direction at least partially with supporting threads;
- wherein
- the supporting threads are made at least partially of melting threads;
- said braiding step is repeated;
- in each braiding, unidirectional individual layers are deposited on the braiding core;
- and
- before the depositing of another individual layer, a previously deposited individual layer is fixed by melting the melting threads.
A braided fiber composite semifinished product, comprising a plurality of unidirectional reinforcing fiber layers, deposited layer by layer, wherein:
- each individual layer has reinforcing threads and braided-in supporting threads made at least partially of melting threads;
- and
- said melting threads are at least partially in a melted state such that each layer is consolidated.
A method of producing fiber composite semifinished products by a circular braiding technique, comprising:
- depositing a plurality of unidirectional reinforcing fiber layers onto a braiding core;
- and
- heating said layers;
- wherein said depositing step comprises,
- i) braiding threads onto a core by unwinding said threads from bobbins that circle concentrically about the core, in different directions;
- ii) fitting the bobbins of a first circling direction with reinforcing threads;
- and
- iii) fitting the bobbins of an opposite circling direction at least partially with supporting threads that are made at least partially of melting threads;
- and
- iv) repeating step i) at least once;
- wherein said heating step comprises heating said layers to a temperature at which said melting threads melt at least partially.
Dependencies are inferred from the claim text.