Ahmedabad Textile Industry’s Research Association
TECHNIQUES OF VALUE ADDITION ON NONWOVEN
Non-Woven Tech Asia 2015
About ATIRA…
ATIRA – first premier non-profit Textile Institute of the
country set up way back in 1949.
ATIRA was especially established to with objective to
motivate textile & allied industries to become
internationally competitive. ATIRA has been now designated
as “Centre of Excellence” in Composites by the Govt. of
India.
Machineries those are installed at the Incubation Centre, ATIRA
are imported from Germany and Switzerland. Most of the
machinery installed is one of its kinds in India. It’s not possible for
every small or medium scale industry or entrepreneur to have an
exposure to the latest and the best technology.
At the Incubation Centre all latest technologies have come under
one roof. So that one could visit and see the machineries in
operation, have technical discussion and take trials if wishes to.
Nonwovens are as sheets or web structures bonded together by entanglement of fibers or filaments.
Mechanical Manufacturing-
by interlocking felts with serrated needles such that the inter-fiber friction results in strong fabric
Thermal Manufacturing-
applying and melting binder onto web by increasing temperature
Nonwovens
Why Nonwovens ?
Nonwovens are not made by knitting or weaving and do not require converting fibers to yarn
Certain percentage of recycled fabrics can be used while manufacturing nonwovens resulting more economical compared to woven fabrics.
Strength of nonwoven fabric depends on the percentage of the recycled fabric incorporated while manufacturing
Post-processing on Nonwovens
In many of the applications, nonwovens as such can not be used.
Lacks in Strength and required environmental conditions.
Need some further treatment depending on final applications,
Coating on Nonwovens-for packaging, medical, etc…
Lamination on Nonwovens-for filters, insulations, etc…
Coating & Lamination
Incubation Centre at
ATIRA is equipped
with LACOM
KIENER, Germany
Multi-roller coating
and Lamination
machine to serve
nonwoven
industries.
Machine Specs
Can Coat / Laminate up to 2.00 mtr width
Hotmelt based machine; no solvent, no water
100% Environment friendly
Thermal bonding also possible
Speed up to 100 mtr/min
Adhesive Compatibility- PUR, POR, Thermoplastics, EVA, Epoxy, PA, etc…
Why Hotmelt ?
Solvent-free (no need to invest heavily in solvent recovery or combustion installations)
Low Energy Consumption (no energy required for curing/drying)
PSA and Heat-activated systems available
High Speed adhesive application possible
High moisture and water resistance
Rapid further processing
Permanent / Nonpermanent adhesive coating
Features:
Good Peel Strength
Waterproof / Water resistivity
*
Breathable *
Soft & many more
* as per requirement of the
application
Why Coating on Nonwovens ?
Hotmelt Dot / Gravure
Lamination
Any design can be achieved
Suitable for Garmenting
Application of low GSM
Ultrasonic welding is also possible on hot-melt coated
nonwovens as the ultrasonic frequency (20 & 35 kHz) with
amplitude (10 µm to 50 µm) activates the molecules of the
hot-melt adhesives to perform binding / welding
Aluminum foil to Nonwoven
Lamination for Thermal
Insulation used as
automobile covers, thermal
blankets in industries….