COPCENTRA MAX 5 CNCProduction of multiaxial carbon fiber fabrics

LIBA Maschinenfabrik GmbH

JEC 2011, Paris

� Company profile

� Facts and figures

� Our philosophy

� Our competence

� Milestones

� Products

� Copcentra MAX 5 CNC

� Our competence

� Multiaxial fabrics

� Configuration

� Weft insertion

� Weft material feeding

� Offline spreading system

� Online spreading system

� Technological aspects

Contents

March 20112

� Family business in 3rd generation

� Head office in Naila / Germany

� 350 employees in Naila /

400 employees worlwide

� 55 employees in R&D

� Service and Sales subsidiaries

in China und USA

Facts and Figures

March 2011

Company profile

NAILA

3

� Continuous strengthening of R&D leadership

� Establishment of development partnerships

� Worldwide expansion of service competence

� Consistent and permanent development of new markets and applications

Our philosophyCompany profile

March 20114

� More than 25 years experience with multiaxial technology

� More than 25 years experience of manufacturing carbon, glass and aramid fabrics

� More than 10 years experience as a development partner in automotive, aerospace

and wind energy industries

� Over 200 multiaxial machines installed worldwide

� Individual cooperation

Our competenceCompany profile

March 20115

Milestones

2011

First raschelmachine produced

1961

Karl Liebrandtestablishes LIBA

1945

Product launchMAX3

1998

Product launchMAX5

2002

Start multiaxial technology development

1983

6

1948

First tricotmachine produced

Company profile

March 2011

� Warp knitting machines

� Raschel machines

� Weft insertions machines

� Warping units

ProductsCompany profile

March 20117

Copcentra MAX 5 CNC - machine for production of carbon fiber multiaxial fabrics

Our competenceCopcentra MAX 5 CNC

March 20118

LIBA

Our competence

Fiber TextilePreforming/ Tailoring

Structuralelement

Recycling

Copcentra MAX 5 CNC

March 20119

Our competenceLIBA

Textile

Recycling

• Assistment in fabric development

• Determination of the optimal production settings

• Sample production

• Advisory service in technical andtechnological questions

• Individual approach

Copcentra MAX 5 CNC

March 201110

What are multiaxial fabrics?

� Multiaxial fabrics consist of one or more layers of differently aligned fibers held in

place by a stitching thread

Multiaxial fabrics

0°

+ 45°

90°

- 45°

Copcentra MAX 5 CNC

March 201111

0°

+ 45°

90°

- 45°

Why multiaxial fabrics?

� Better mechanical properties

� Improved component build speed

Multiaxial fabrics

Woven fabric Multiaxial fabric

Copcentra MAX 5 CNC

March 201112

Stitching of the multiaxial fabrics with “Walking needle system”

Advantages:

� Minimum load and tension

= reduced wear on the needle system

� Reduced stitch holes

= improved fabric quality

� Reduced friction

= high production speed

Multiaxial fabricsCopcentra MAX 5 CNC

March 201113

Carbon fiber composite materials:

� aerospace

� automotive

� construction

� marine

� corrosion-resistant equipment

� comsumer products

� heavy transportation

ApplicationsCopcentra MAX 5 CNC

March 201114

Available working width:

� 50“ (1270,0 mm)

� 101“ (2565,4 mm) available working width adjustable to 50‘‘

� 130 “ (3302,0 mm) available working width adjustable to 80‘‘

ConfigurationCopcentra MAX 5 CNC

March 201115

Weft insertion area:

� One weft insertion system per layer

� Standard execution: 3 weft insertion systems

� Angles are adjustable from +45°to -45°(in 1°angle steps )

� Other angles possible upon a customer request (e.g. 30°)

� Weft insertion material: up to 254 mm wide carbon fiber tapes .

The tapes can be formed online or offline

Weft insertion Copcentra MAX 5 CNC

March 201116

Weft insertion area:

ConfigurationCopcentra MAX 5 CNC

Weft insertion+45

Weft insertion90

Weft insertion-45

March 201117

Weft insertionCopcentra MAX 5 S3 M13 (±45º/±45º/±45º)

Working width 101‘‘ (2565,4 mm)

Copcentra MAX 5 CNC

March 201118

Weft insertion system for carbon UD-tapes up to 254 mm width

Weft insertionCopcentra MAX 5 CNC

March 201119

Conveyor chain

� patented clamping system

� minimized selvedge waste

� max. fabric area weight 800 g/m²

Weft insertionCopcentra MAX 5 CNC

March 201120

2 alternative systems for carbon fiber spreading and manufactuting of UD-tapes:

Carbon fiber spreading

offline spreading system

10’’ (254 mm) wide spread tape

on 10’’ wide sectional beams

online spreading system

up to 9’’ (227 mm) wide spread tape

direct feeding to weft insertion

Copcentra MAX 5 CNC

March 201121

Offline spreading systemCopcentra MAX 5 CNC

March 201122

Parameters offline spreading system:

� spreading of 50K and 60K

� 2nd level for spreading 12K / 24K possible

� tape width 254mm (2x) or 500mm (1x)

� spreading speed = constant

� 48 pos. for carbon bobbins Ø 240mm x 280mm

Offline spreading systemCopcentra MAX 5 CNC

March 201123

Offline – Spreading Creel: 2 x 24 positions per spreading device

unrolling creel

no twist in the tow

Offline spreading systemCopcentra MAX 5 CNC

March 201124

Offline – Spreading Creel: 2 x 24 positions per spreading device

Guiding elements

Eliminaion of twist in the tow

Offline spreading systemCopcentra MAX 5 CNC

March 201125

Offline – Spreading Creel: 2 x 24 positions per spreading device

Spreading of the carbon fiber tows into tapes

Spreading unit utilize vibration to spread

Offline spreading systemCopcentra MAX 5 CNC

March 201126

Different width of UD-tapes:

Offline spreading systemCopcentra MAX 5 CNC

March 2011

Spreading system 2 x 254 mm Spreading system 1 x 500 mm

27

Spreading unit: 2nd level for 12 K / 24 K

Offline spreading systemCopcentra MAX 5 CNC

March 201128

Feeding system for pre-spread tapes with 10“ (254 mm) width

Offline spreading systemCopcentra MAX 5 CNC

March 201129

Online spreading systemCopcentra MAX 5 CNC

March 201130

Parameters online spreading device:

� spreading of 12K / 24K

� tape width up to 227 mm

� 40 pos. for carbon bobbins Ø200mm x 280mm

(each position with individual servo drive)

� compensation of non-linear weft insertion speed by controlled creel motion

� spreading speed = constant

Online spreading systemCopcentra MAX 5 CNC

March 201131

Production parameters:

� constant relative air humidity 70%+-10%

� constant temperature 22°C +-2 °C

Technological aspectsCopcentra MAX 5 CNC

March 201132

LIBA Maschinenfabrik GmbH • Oberklingensporn • 95119 Naila • Germany

Tel.: +49 (0) 9282 67 0 • Fax: +49 (0) 9282 5737 • Email: info@liba.de

Thank you for your attention!

Questions?