09.11.2018 - 1

Optimizing the mechanical performance and flushability

of wipes containing lyocell shortcut fibersVEOCEL™ Lyocell with Eco Disperse Technology

DI (FH) Thomas Maier

09.11.2018 - 2

Agenda

LENZING™ wood-based cellulose fibers

VEOCEL™ Lyocell with Eco Disperse technology

Flushable wipes

VEOCEL™

Conclusion

VEOCEL™ Lyocell – not only suitable for flushability

09.11.2018 - 3

The Lenzing Group

The Lenzing Group is an international

company that produces high-quality

fibers from the renewable raw material

wood with environmentally friendly

and innovative technologies.

These fibers form the basis for a wide

range of textile and nonwoven

applications, and are also used in work

and protective wear and in industrial

applications.

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Lenzing fibers produced from the raw material wood

09.11.2018 - 5www.lenzing.com

liquid management

absorbency

clean and safe

gentle on skincontribution to breathability

blending partners

handfeel

biodegradability

strength

Purely for you - VEOCEL™

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● Direct dissolution process

● Closed-loop process

● > 99% recovery of solvent

Sustainable production process of VEOCEL™ Lyocell

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environmental

sustainability

eco message more competitive

products

higher perceived

quality

biodegradable

botanic origin

sustainable production

social responsibility

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Unlocking the potential

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Flushable Wipes

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Flushable wipes Retail sales and nonwoven volume for sub-segments

Source: Smithers Pira, The Future of Flushabel Wipes to 2023, Phillip Mango

09.11.2018 - 10

Several million € costs per year for sewer damages

Clogging of sewers

Source: https://ooe.orf.at/news/stories/2923275/

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Consumer Education

INDA/EDANA Code of Practice

vs.

flushablenon-flushable

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How to assess flushability?

INDA/EDANA GD4 - 7 Tests to be passed:

● FG501- Toilet Bowl and Drain-line Clearance

● FG502- Slosh Box Disintegration Test

● FG503- Household Pump Test

● FG504- Settling Test

● FG505A- Aerobic Biodisintegration Test

● FG506A- Anaerobic Biodisintegration Test

● FG507- Municipal Sewage Pump Test

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VEOCEL™ Lyocellwith Eco Disperse technology

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VEOCEL™ Lyocell with Eco Disperse technology

Eco Disperse technologyfor products containing

VEOCEL™ Lyocell Shortcut

● Strong in use

● Quick disintegration

● Biodegradable

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0

2

4

6

8

10

12

0 10 20 30 40 50

wet strength

LENZING™ Lyocell Shortcut content [%]

1.4dtex1.7dtex

Wet strength of fabrics can be adjusted by fiber titer and content

LENZING™ Lyocell Shortcut Blend Ratio Selection

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LENZING™ Lyocell Shortcut Fiber Grade Selection - Cut Length

0

2

4

6

8

10

12

0 10 20 30 40 50

wet strength

LENZING™ Lyocell Shortcut content

12mm

10mm

8mm

LENZING™ Lyocell Shortcut 1.4 dtex at 15 - 40% in blends with 60 - 85% wood pulp

Wet strength of fabrics rises with the cut length of fibers

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20% LENZING™ Lyocell Shortcut at 10 mm cut length in blends with 80% wood pulp

Fine dtex fibers lead to higher wet strength of fabrics

1.15 1.4 1.7

wet strength

LENZINGTM Lyocell Shortcut fiber titer [dtex]

New

generation of

LENZING™

Lyocell

Shortcut

LENZING™ Lyocell Shortcut Fiber Grade Selection - Titer

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0

10

20

30

40

50

60

70

80

90

100

4 5 6 7 8 9 10

30 m

in s

losh

bo

x d

isin

teg

rati

on

[%

]

wet strength [N/5cm]

1.15dtex

1.4dtex

1.7 dtex

INDA/EDANA GD4 - FG502: > 60 percent after 60 minutes

Fast disintegration at high wet strength: > 90 percent after 30 minutes

Note: 20% LENZING™ Lyocell Shortcut in

blends with 80% wood pulp

LENZING™ Lyocell Shortcut

low high

spunlace energy

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Fabrics (60gsm) with 1.7 dtex/10 mm fibers of Viscose and Lyocell,

produced at identical settings

LENZING™ Lyocell Shortcut vs. Viscose Shortcut

LENZING™ Lyocell: Higher wet strength using less fibers in blends with pulp

0

20

40

60

80

100

0

1

2

3

4

5

6

7

8

90:10 80:20 70:30 60:40

30 m

in s

los

h b

ox

dis

inte

gra

tio

n

[%]

we

t s

tre

ng

th [

N/5

cm

]

Viscose 1.7 dtex 10 mm

Lyocell 1.7 dtex 10 mm

slosh box disintegration viscose

slosh box disintegration Lyocell

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VEOCEL™ Lyocell Shortcut

20% LENZING™ Lyocell Shortcut fibers enable products with

excellent quality, performance and lower costs

Parameters 80% Pulp 20% LENZING™ Lyocell

80% Pulp 20% Viscose

> 80% Pulp < 20% Binder

High wet strength +++ + ---

No use of synthetic binders

+++ +++ Depends on type and amount of binder

Quick disintegration +++ +++

Biodegradability +++ +++ Depends on type of binder

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Moist toilet tissues with VEOCEL™ Lyocellmeeting all requirements

Wipes containing VEOCEL™ Lyocell

• Balanced mechanical properties: strong in use fast disintegration

• Botanic origin: fully biodegradable

Flushability Test according to INDA/GD4, tested at IPS (USA):

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VEOCEL™ Lyocell

not only suitable for flushability

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VEOCEL™ Lyocell Shortcut Wet laid products are not only flushable

● Lyocell blends can also create fabrics with high wet and dry strength

● Variations in increased hydroentagling energy applied to these fabrics

allow to tailor high strength and sustainable fabrics

● Blending ratios from 80/20 to 50/50 perform excellent

● No chemical binders needed

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Increased mechanical properties

0,00

10,00

20,00

30,00

40,00

50,00

60,00

70,00

80,00

90,00

100,00

Str

en

gth

in

New

ton

/5 c

m

Dry fabric strength - 70/30 blend at different energy consumptions

MD

CD

60 gsm 80 gsm

0,00

10,00

20,00

30,00

40,00

50,00

60,00

Str

en

gth

in

New

ton

/5 c

m

Wet fabric strength - 70/30 blend at different energy consumptions

MD

CD

60 gsm 80 gsm

Opening new possibilities for sustainable wipe application

kWh/kg of fabric kWh/kg of fabric

09.11.2018 - 25

Conclusion

VEOCEL™ Lyocell provide

biodegradable tailor made wet laid

fabrics by:

● use of LENZING™ fiber portfolio

● adjustment of fabric composition and

hydroentangling energy

● tuning wet strength and mechanical

properties opening new possibilities for

sustainable dispersible and

non-dispersible wipes.

09.11.2018 - 26

for your attention!

Thomas Maier

t.maier@lenzing.com