| SALIENT
ACHIEVEMENTS OF COMPLETED PROJECTS TILL DATE |
- Speciality
yarns from recycled PET bottles using different spinning
techniques.
| Over
the past few years SASMIRA has demonstrated on indigenously
available technology that can be used to develop
value added products from wastes like PET bottles.
The present project aimed at developing speciality
yarns from PET bottle waste that can be used for
textile and industrial applications. Thus the filament
yarns were developed from PET waste and staple fibres
for DREF and rotor spinning were also developed.
The end use applications have been identified as
woven products such as automotive upholsteries,
home furnishings, tapes, luggage fabrics, etc |
- Energy
conservation in preparatory and finishing process
for natural and synthetic fabrics by application of
ultrasonic for the decentralized sector.
| The
project envisaged the development of a methodology
for conservation of commodities used in preparatory
and finishing processes in textiles wet processing.
The technique employed was low energy ultrasound,
which operates at a low temperature of 50 –
55 °C. The application of ultrasound for various
wet processes were attempted initially on the laboratory
scale and later scaled up to commercial trials. replica watches
The results indicated that ultrasound has great
potential for reduction in energy requirements (upto
30 – 40 %) for the textile wet processing
in the preparatory as well as finishing treatments
like bio-finishing, without hampering the basic
properties of the fabric like strength, handle,
etc. |
- Development
of ballistic protective fabric for soft armour
| Aramid
fibre for Armour fabrics is most popularly used
for ballistic protection. However, the fabric assembly
is found to be heavier and the higher density and
moisture sensitivity of aramid loses its tensile
characteristics on wetting. Therefore, the objective
of the project was to develop lightweight armour
fabrics, using ultra high modulus polyethylene (UHMPE).
UHMPE fibre due to its lower density is expected
to offer more bulk and better fabric cover. Weaves
like plain and 2 x 2 baskets in different setts
were considered. These fabrics may be used to fabricate
soft armour which offers protection from typical
handguns, small lower speed shrapnel fragments etc. |
- Development
of multi-layer protective garments for multifunctional
usage as sportswear and leisurewear
| A
knitted layer next to skin having high capillary
action and outer layer having high absorbency and
dissipation power was the main objective of the
project. Therefore, various knitted structures were
prepared on tubular knitting machine. An exhaustive
study based on vertical and horizontal wicking test,
water retention, wet back test, drop penetration
and spreading evaluation was done. Polyester as
inner layer and chemically treated (to enhance hydrophilic
property) viscose as outer layer formed the sports
knitwear and these two layers were bound together
by binder thread. This sportswear was thus designed
on the basis of twin layer structure. Extensive
wear trials were taken in one school with such garments
and the results fulfilled the objectives of the
project |
- Development
of calibrated colour-viewing cabinet with metamerism
scale for the process houses and garment manufacturer.
| The
object of the project was to develop prototype colour
viewing cabinet using CIE approved light sources
after verification of the spectral output of different
light sources using spectroradiometer and development
of a scale for measuring degree of metamerism for
each light source. A colour viewing cabinet was
designed and prototype fabricated as per BS specification:
BS 950 and fitted with six light sources. Simultaneously,
the metameric scales have been developed. |
- Development
of chemical protective fabrics based on activated
carbon fibres from cheaper sources.
| Activated
carbon fibres starting from cheaper polymeric precursors
like non-woven viscose waste and feasibility study
of carbonization and activation of viscose fibre
based non-woven fabric on laboratory scale furnace
was aimed for the project. Non-wovens of different
weights and needle density have been developed starting
from viscose fibre wastes. The activated carbon
fibres produced in non-woven form have shown high
surface area and excellent adsorption against a
variety of harmful chemicals. A number of prototypes
of products have been developed for civilian applications
like pollution masks, filters, chemical protective
jackets, etc. |
- Development
of UV resists waterproof breathable coating as protective
textiles.
| Fabric
with UV – absorbing and water-repellent property
are used as base material for various protective
clothing and developing theses fabric formed the
main aim of study. Nylon 6 fabric of different grams
per square meter (gsm) viz., 60 and 90 gsm have
been selected for this study as these include the
application range from apparel to tents to covering
textiles, etc. The nylon fabrics have been treated
with UV resist chemicals like Laxof-UV and Rayson
under different application conditions. The properties
of the Nylon treated fabric (UV as well as WR combination)
of both the gsm suggest that these samples have
good potential for being used as a base material
for high altitude applications. |
- Reducing
pollution by recycling decolourised exhaust dye liquor.
| Designing
a laboratory scale plant for nano-filtration to
reduce pollution by recycling dye bath liquor was
the objective of project. Recycling the dye bath
liquor will lead to lesser load on the effluents.
The recovered salt is reutilised for further dyeing
leading to savings in the cost of dyeing. Findings
of the project suggested that recovery of salt (up
to 65 %) from the exhausted dyebath liquor is possible
with the help of appropriate membranes using nano
filtration. Identification of dyes that yield clear
filtrate after chemical flocculation was carried
out and suitable methodologies for flocculation
and nanofiltration were established. This technique
of nanofiltration saves eco hazard of solid waste
disposal as the total dissolved solid is reduced. |
- Indigenisation
of woven geogrid manufacturing technology
| In
the field of geotechnical applications woven geogrids
hold an important position. Indigenous materials
are not available. The project envisaged setting
up an indigenous technology for the manufacture
of woven geogrids. The project combined two separate
technologies simultaneously. The required fabric
constructions from high tenacity polyester yarn
were developed in the pilot plant by suitable modifications
in a dobby loom. In the subsequent coating treatment
coating chemicals of different grades and setting
temperatures as well as curing parameters have been
optimized. The product can further be scaled up
in industrial situations for the potential users
in the country. |
- Development
of an indigenous airbag fabric for automotive safety.
| Commercially
there are two varieties of airbag fabrics available
viz. coated and uncoated. It is proposed to develop
uncoated fabrics, since the trend of using such
fabrics has gained popularity in the international
market. Airbag is an important occupant safety device,
which is not so common in India due to high cost
and non-availability of materials. Developing such
materials in various grades with available technology
was the aim of project. Textile materials of both
lighter and the heavier variety have been experimented.
After successful trials on both the varieties from
high tenacity nylon 66 and nylon 6 yarns, it was
observed that the cloth construction parameters
fulfilled the requisite air permeability level of
the airbags. Upscaling the technologies for commercial
weaving is being persuaded. |
|
Research
& Development | Ongoing
projects
|
