case i: thermochromic coatings

“The functionalization processes,
the way to improve hometextiles
technically”
UTIB TURKISH TEXTILE AND CLOTHING SECTOR VI.
INTERNATIONAL R&D BROKERAGE
Bursa, April 2014.
I. AITEX- CENTER OF EXCELENCE
II. INTRODUCTION
III. TRENDS AND NEW MARKETS
IV. SUCCES CASES
V. GENERAL CONCLUSIONS
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX CENTER OF EXCELLENCE IN APPLIED RESEARCH AND TECHNOLOGICAL
DEVELOPMENT
AITEX, Textile Industry Research
Association. It is currently, the leading
Spanish
centre
for
research,
innovation and advanced technical
services available to the textile,
manufacturing and technical textile
sectors.
AITEX is a private non profit
association that encopasses textile
and textile relates companies. Its
ultimate aim is to make this sector
more competitive, so they have new
bussiness opportunities.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX CENTER OF EXCELLENCE IN APPLIED RESEARCH AND TECHNOLOGICAL
DEVELOPMENT
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX- CENTER OF EXCELENCE
II. INTRODUCTION
III. TRENDS AND NEW MARKETS
IV. SUCCES CASES
V. GENERAL CONCLUSIONS
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION: FUNTIONALIZATION
The needs for innovation in the
textile sector are directed towards:
– The development of new textiles
with special properties.
– The diversification
existing ones.
of
Coating
•
Lamination
•
Surface treatments
•
Electrospining
DISPERSANT
the
These special properties can be
achieved, in most cases, by
modifying the textile surface
through
technical
finishing
processes:
•
BASE RESIN
MICRO/NANO
PARTICLES
Coating paste
Adhesives
membrans
Functionalization
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION
Coating
Application of a chemical in a liquid state or a compound
formulation, on a textile substrate, directly or by transfering, to one
or both sides.
AIR KNIFE COATING
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION
Coating
Application of a chemical in a liquid state or a compound
formulation, on a textile substrate, directly or by transfering, to one
or both sides.
KNIFE OVER CILINDER COATING
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION
Hot Melt
Hot Melt adhesives are solid polymers that melt when subjected to
temperatures of between 80 and 220 ºC and solidify again quickly
when it cools down. The Hot Melt adhesives are 100% dry
substances and are applied in a melt without the use of water or
solvents.
Engraved cylinder system
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION
Electrospinning
A high voltage is applied to a polymer solution such that charges are
induced within the solution. One electrode of the voltage source is placed
into the solution and the other is connected to the collector. When charges
within the solution reached a critical amount, a fluid jet will erupt from the
droplet at the tip of the needle resulting in the formation of a Taylor cone.
The electrospinning jet will travel towards the region of lower potential,
which in most cases, is a grounded collector. A web of solid randomly
oriented nanofibers is deposited on the surface of the grounded collector.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. INTRODUCTION: FUNCTIONALIZATION
% Release
Protection
against
metal
splashes
released allatoine (%)
100
Afection
treatments
80
Antiestatic and
antimicrobial
properties
60
40
20
0
day 0
day 1
0,2% Allantoin
day 2
day 4
0,5% Allantoin
day7
0,7% Allantoin
SPECIAL
PARTICLES
Stab
protection
Acoustic and
thermal
insulation
Activated
blood
circulation
Inprovement
abrasion
properties
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX- CENTER OF EXCELENCE
II. INTRODUCTION
III. TRENDS AND NEW MARKETS
IV. SUCCES CASES
V. GENERAL CONCLUSIONS
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
III. TRENDS AND NEW MARKETS
The technical textiles sector
obtained by coating, laminating
and functionalization is a highly
technical,
very
competitive
market and in a constant growth.
In 2011, for example, nearly 8%
of laminating companies in the
EU were Spanish (27), with a
turnover of 400 million euros
(European total turnover= 8.000
million euros).
Coated / laminated technical fabrics demand
distribution at European level, in 2011(Detrell A.
The European Coating and Laminating Sector.
TCL2012).
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
III. TRENDS AND NEW MARKETS
In Europe, hotmelt technology is a
fully developed technology , which
started to come into use in the
early 2000s, with the development
of new laminating sytems, new
membranes and new adhesives.
Nevertheless, it did take about 10
years to reach its true potential and
the leading technical finishing
companies
are
already
incorporating it into their production
processes, starting to generate
technical articles with a high
demand.
Sales evolution (data in million metres) of
waterproof-breathable articles in the EU (Detrell A.
The European Coating and Laminating Sector.
TCL2012).
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
III. TRENDS AND NEW MARKETS
Trends
Use of additives to obtain special features which are not provided by
the finishing products available in the actual market.
New technical finishing products more environmentally friendly and
health safer (fluorocarbons C6-C4 versus C8/PFOA, phthalate-free
plasticizers, glyoxalic resin with "zero formaldehyde”,N-P base
flame retardants).
Coatings/prints with conductive polymers or metallic particles
dispersions, to obtain lighting fabrics, heated or electronic
applications.
New machinery/hotmelt applicators
ecological and efficient.
designs that are more
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
III. TRENDS AND NEW MARKETS
New possible markets
Printed Electronics: Flexible substrates for the electrical/electronics
sector, using conductive inks, conductive polymers or resins treated
with metallic nanoparticles.
Textile Architecture: Outdoor fabrics, high tenacity PES base, coated
or laminated with fluorinated polymers.
Thermal and acoustic isolation: Through coating process, using
micro/nanostructured treated with UV/IR reflective particles
Manufacture of technical finishing eco-sustainable machinery that
favor the low consumption of water, energy and chemicals, allowing
to obtain functional fabrics and even directly made-up garment.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX- CENTER OF EXCELENCE
II. INTRODUCTION
III. TRENDS AND NEW MARKETS
IV. SUCCES CASES
V. GENERAL CONCLUSIONS
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
II. SUCCESS CASES
I. THERMOCHROMIC COATINGS
II. COURTAINS WITH ACOUSTIC PROPERTIES
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Market needs
Objetive
Experimental development
Results
Conclusions/next steps
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Market needs
 Unique camouflage military uniform, that
could be used for both, the arid
landscape and the wooded one.
 Alarm device integrated into the
firefighter
suit
to
indicate
burn
temperature risk.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Objetive
 Camouflage military uniform, It is intended to move from a
arid camouflage to a wooded camouflage through a change in
Tª, 35-39ºC. Thermochromic dyes and auxiliary products are
studied for their use by frame printing process. It is very
important to stabilize lightfastness result.
 Firefighter suit , It is intended to detect high temperatures
and warn them in a visual way through changing the color of
the fabric, at 60ºC and at 80ºC. In this research, dyes and
auxiliary products that could be used by knife coating
technology, should be studied.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Experimental development: Arid-wooded military
camouflage
Main difficulties encountered:
 Matching colors with printing pastes and with fabric
base coloration
 Lightfastness improvement
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Experimental development: Arid-wooded military camouflage
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Results
Change of colour with temperature
Wooded 25ºC
Increase of the temperature
35-39ºC Arid
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Experimental development: Warning device to indicate burn
temperature risk.
Main difficulties encountered:
 Matching colors with printing pastes and with fabric base
coloration.
 Lightfastness improvement, in this case it has been resolved by
protecting the bands with a flap, that only rises when the fireman
performs an intervention.
60ºC
60ºC
80ºC
80ºC
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Experimental development: Warning device to indicate burn
temperature risk.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Results
Clothing and integration
60ºC
80ºC
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE I: THERMOCHROMIC COATINGS
Conclusions / next steps
The chromatic range must combine the change of the
thermochromic pigments color with the textile substrate base color.
Durability and color fastness in some cases can be improved
(following steps)
It is possible to create fabrics that change color in a 'smart' way,
induced by an external stimulus ( in this case, temperature change)
Using simple conventional techniques and processes (such as
printing or knife coating), it is possible to apply a thermochromic
finishing with highly technical end-use applications.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
IV. SUCCESS CASES
I. THERMOCHROMIC COATINGS
II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Market needs
Objetive
Experimental development
Results
Conclusions/next steps
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Market needs
 From the architectonic point of view, the
noise, that affects the habitability of a
dwelling, should be addressed of two
different ways, depending on the origin of
the noise and the effect to be achieved.
Isolation
 Protection of a reception dwelling
against the noise penetration that
interferes with desired sound
signal.
Provide
a
silence
environment.
Conditioning
 Achieving that theNOISE,
soundanycoming
sound
from a source will
be
irradiated
that can cause a lose of
audition
or can be to
homogeneously in all
directions,
harmful for health
obtain an ideal diffuse sound field,
avoiding reverberations.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Objetive
 Obtaining a functionalized hometextile with:
• Acoustic properties in order to
reverberation noise.
• Fire retardant properties.
• Blackout properties.
avoid
the
 This technical hometextile is developed according
International Standards and its installation must be very
easy.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Experimental development – Design and installation
 The acoustic assays was made under real mounting
conditions. Distances between window and curtains from
8,5 to 14,5 cm.
WITHOUT
HOTMELT
 The folding of the curtain was measured from 0%,
that
is FR
the curtain completely extended, to the 200% that is a
curtain with threefold of fabric.
In a meeting
room
In a
Reverberation
Chamber
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Results
Fire retardant
• Class 1 according ISO 13773:2003
Blackout
• Opacity 99,5 %
Acoustic absorbent
• α = 0,6 plenum 8,5 - 14,5 cm y
folding 100 - 150%
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Results - Conditioning of the meeting room
 The use of curtains reduces the reverberation time and
improves the acoustic comfort.
Meeting room
without curtains
Meeting room
with curtains
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. FUNCTIONAL COURTAINS WITH ACOUSTIC PROPERTIES
Results - Conditioning of the meeting room
Reverberation time (s)
 The use of curtains reduces the reverberation time and
improves the acoustic comfort.
Without curtains
With window curtain open
With all curtains close
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
CASE II. HOT MELT LAMINATE. FIREPROOF PROPERTIES FUNCTIONALIZATION
Conclusions
Hometextile, can be multifunctional product as acoustic and light
absorbent with fire retardant properties.
Hometextile, as a decorative element, can achieve that the sound,
coming from a source, will be irradiated homogeneously in all
directions, to obtain an ideal diffuse sound field, avoiding
reverberations.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
I. AITEX- CENTER OF EXCELENCE
II. INTRODUCTION
III. TRENDS AND NEW MARKETS
IV. SUCCES CASES
V. GENERAL CONCLUSIONS
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
V. GENERAL CONCLUSIONS
Additivation of coating paste to improve technichal performance
such as resistence to abrasion or to molten metals, or to obtain new
properties such as color change, is possible by using specific
additives.
A major effort must be done in formulation to avoid several
problems. Application techniques and processes required to obtain
this coating functionalization are very simple and conventional.
Final obtained textile articles should present a balance between
functionality and durability.
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014
Maria Blanes (Head of Research Group)
[email protected]
AITEX
“The functionalization processes,
the way to improve hometextiles technically”
Turkey, April 2014