# US 9,518,342 B2 · Method of producing a tubular fiber arrangement of a fiber-reinforced composite part, and tubular fiber arrangement

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- Number: US 9,518,342 B2
- Document ID: US9518342B2
- Status: Granted
- Kind: B2
- Application number: 13/945,069
- Filed: 2013-07-18
- Published: 2013-11-14
- Granted: 2016-12-13
- Earliest claimed: 2011-01-18
- Assignees: SGL Kuempers GmbH & Co. KG
- Applicants: Sgl Kuempers GmbH & Co. KG
- Inventors: Karl-Josef Brockmanns; Franz-Juergen Kuempers; Gregor Baumgart
- Web page: https://patentgrep.com/patent/US9518342B2

## CPC

- D01D 5/24: with a hollow structure; Spinnerette packs therefor (D01D5/38 takes precedence; producing tubes of plastic material B29D; addition of agents forming hollow filaments D01F1/08)
- B29C 53/665: {Coordinating the movements of the winding feed member and the mandrel}
- B29C 70/24: oriented in at least three directions forming a three-dimensional [3D] structure
- B29C 70/38: Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns {(application heads for tyres B29D30/28)}
- B29K 2307/04: Carbon
- B29L 2023/00: Tubular articles (B29L2024/00 takes precedence {; catheters B29L2031/7542})
- Y10T 428/24612: Composite web or sheet
- D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for producing a tubular fiber arrangement of a fiber-reinforced composite part and a tubular fiber arrangement as an intermediate product for a composite part. The local conditions are taken into account in an especially simple and reliable manner with respect to the geometry of the composite part and its load profile. When forming the composite part on a core, the fiber mass supplied during the formation of the tube is proportional to the local circumference of the composite part which results from the diameter. The advancement speed of the core remains substantially constant.

## Claims

### Claim 1

A method of producing an intermediate product for a fiber-reinforced composite part, the method which comprises:
forming a tubular fiber arrangement on a core having a shape corresponding to the composite part, with a varying cross-sectional shape along a length thereof, the tubular fiber arrangement forming the intermediate product;
supplying fibers during a formation of the tubular fiber arrangement with a fiber mass being proportional to a local diameter and circumference of the composite part; and
maintaining an advance speed of the core substantially constant during the supplying and forming step.

### Claim 2 (depends on 1)

The method according to claim 1, which comprises forming the fiber arrangement as a non-crimp fabric.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the non-crimp fabric comprises longitudinally extending fibers.

### Claim 4 (depends on 1)

The method according to claim 1, which comprises producing the fiber mass that changes depending on the local circumference of the composite part from threads having a lesser or a greater fineness.

### Claim 5 (depends on 4)

The method according to claim 4, which comprises processing the threads by removing a predetermined number of fibers from the threads.

### Claim 6 (depends on 5)

The method according to claim 5, which comprises removing the fibers from the threads by way of an automated removal device.

### Claim 7 (depends on 4)

The method according to claim 4, which comprises processing the threads by adding a predetermined number of fibers to the threads.

### Claim 8 (depends on 7)

The method according to claim 7, which comprises applying the fibers to the threads by way of an automated application device.

### Claim 9 (depends on 1)

The method according to claim 1, which comprises varying a number of threads for producing the fiber mass that changes depending on the local circumference of the composite part.