Use Wool Processing
Today’s sheep descend from wild sheep (Mouflon) of
Asia and Europe. Sheep are a source of fiber and meat. Sheep were first
domesticated about 10,000 years ago. People used wool as much as 20,000 years
ago. Sheep have been bred to produce finer wool fiber. People in Iran began
selective breeding of sheep for finer wool 6,000 years ago. Fine wool sheep
breeds of today originated with the Spanish Merino, developed more than 1,200
years ago. 1,000 distinct breeds of sheep, with 50 breeds in North America.
Many of these breeds are rare and some are in danger of extinction. In the
U.S., four breeds account for more than two-thirds of the sheep population.
Crossbred wool breed developed by the USDA in 1912. Produce large ewes with
large lambs and good wool yield. Survive well on range conditions of the western
U.S.
Wool, a fiber from the hairs of animals such as sheep,
goats, and yaks, is a textile with an immense number of uses. One of the major
uses of wool is in garment production, but this fiber can be used for many
other things. Around 80% of the world's wool goes into garments like sweaters,
hats, and coats, leaving 20% to be used in some surprising and interesting
ways. Many of the uses of wool are very ancient, but people are constantly
developing new applications for this versatile fiber.
People have been utilizing wool for thousands of years
for both decorative and functional purposes. This fiber has a number of
advantages, including durability, flexibility, and water resistance. Varying
grades of wool can range from extremely soft fibers which can be used against
the skin to more coarse fibers which are more suited to tasks such as stuffing
and insulating. The variety of uses of wool ensure that every little is wasted.
Uses of Wool
Wool has non-apparel uses for wool. Wool carpets
are used for rugs (hand-knotted), rugs (hand-woven), tufted carpets, carpet
underlay, blankets & bedding. Wool is also used as materials of home and
emergency/hospital, quilted jacket lining (covered fabric), cushions. Pressed
felts is used for hats, banners, piano hammers, board erasers, insoles. Wool
has great used in industrial like- oil or hazardous-material, clean-up pads,
structural insulation, baseball winding, ballet-shoe toe padding, cleaning aids
or tools (hand mitts, venetian blind dusters, etc.), car insulation (next to
fire wall), fluid filters, glove padding, mulch pads . Wool has colorful used
in furnishings like-upholstery in homes, cars and airplanes, wall coverings,
office dividers, sound-proofing barriers, pool-table felt, casino-table felt
covers.
Use of Wool for Carpet
Carpet improves room acoustics in that it
acts as a sound absorber and also dampens any impact noise in a room, such as
that arising from footsteps, furniture movement and dropped objects. Carpets
are one Carpets are one of the few materials that can control noise in three
ways: reducing airborne sound, surface noise and sound transmission to rooms.
Stuffing for furniture can be made from wool, and
recycled wool can be utilized to make insulation and sound proofing. Wool's
loft makes it ideal for soundproofing applications. Wool also has a long
history of being used in carpets and carpet padding. Wool carpets are famously
durable, with rich, long-lasting colors, and wool carpet padding adds
additional insulation and height to carpeting. Other uses for wool include
lining pads for other types of flooring, such as floating wood floors.
Wool carpet reduces airborne sound
Sound is transmitted by the vibration of air
molecules. T he porosity of the surface of carpets means that sound waves can
penetrate into the pile, rather than being reflected back into the room as they
would from a smooth surface. Carpets are extremely effective sound absorbers
because the individual fibers, pile tufts and underlay have different resonant
frequencies at which they absorb sound. In this respect, wool carpets are
particularly effective, as the millions of wool fibers in an area of carpet
have a range of lengths, diameters, crimps and spirality, which enables them to
absorb sounds over a wide range of frequencies.
By reducing the noise levels and reverberation times,
wool carpet improves a room’s acoustics. Background noises disappear, speech
comprehensibility increases and occupants
automatically speak in a softer, more relaxed voice, rather than
generating even more noise by trying to make themselves heard above the sound
around them.
Wool carpet reduces surface noise
Surface noise in a room is the sound from footsteps,
dropped objects and furniture movement. Bare tile floors produce 7-12 times
more surface noise than carpets [2], which cushion the impact of the noise
source, absorbing and deadening the sound. This is achieved by converting some
of the high frequencies into less noticeable lower ones. For example, footsteps
on concrete create a high proportion of high frequency sound which will be
heard as a sharp click or tap, whereas a
carpet will change this to a muffled thump. Carpet reduces impact noise
by over 20 dB (decibels), and also ensures that the “life” of the noise is only
half as long as that with hard flooring . Again, the thicker the pile, the
better the sound reduction.
This type of noise control is particularly important
in busy restaurants and other locations where people need to be able to
communicate amidst a lot of activity creating a background of continual impact
sounds.
Wool carpet reduces noise transmission
While carpets reduce noise transmission through the
floor in multi-storied buildings, the degree of actual noise reduction, as well
as people’s perception of it, are dependent on the frequency distribution of
the sound. So again, wool carpet, because of the fibre’s natural ability to
absorb a wider range of frequencies, also provides superior sound insulation
for those below.
A material’s ability to reduce noise transmission can
be classified according to its Impact Insulation Class (IIC), the higher the
rating the more efficient a material is in reducing the sounds transferred to
the room below. In the CRI tests mentioned above, wool carpets laid directly on
a concrete slab floor-ceiling assembly doubled the IIC value, which was
improved by a further 13-18% when varying weights of underlay were also used.
Carpet can improve the IIC of common flooring/ceiling systems by approximately
30 dB.
Fire blankets are often more effective for most
people than a fire extinguisher when faced with a fire. Fire blankets deprive a
small fire of oxygen by smothering it. In order to do this, fire blankets are
made from fire resistant materials, such as wool or fiberglass. They may also
be chemically treated to increase the fire resistance.
A fire blanket can be used for a couple of different applications
A fire blanket can be used for a couple of different applications
Wool Fire Blanket
Wool is a naturally flame retardant fiber, making it
ideal for use in a fire blanket. For added protection, many fire blankets that
you'll find on the market have been treated with chemicals to increase their
fire resistance. At Fire Safety Source, you can purchase wool fire blankets
that have been treated with DuPont X-12 for added protection.
A wool fire blanket is only as effective as where it
is placed. For your Convenience, Fire Safety Source offers many cabinets for
attractive and convenient storage. If you run an office building, you might
want to place fire blanket cabinets and wool fire blankets in every public
space, in addition to having fire extinguishers located throughout your
building. You can place them by doorways, in hallways, or under
cabinets--virtually anywhere that they can be easily reached in the event of an
emergency.
You should be aware of the potential limitations of a
wool fire blanket when you are stocking your office. While they are incredibly
easy to use, you must get close to fires in order to smother the flames. A wool
fire blanket should not be used to extinguish large fires, as this would
require getting too close. In such a case, however, the fire blanket can
protect We so that we can escape.
Use of Felted Wool
Felted wool, which is made by creating wool fabric and
then treating it so that the fabric compacts and pulls together, has a number
of uses. Uses of wool felt include shoes, hats, and waterproof outer garments.
It is also famously used in pianos to muffle the impact of the hammers,
creating the distinctive sound which differentiates pianos from harpsichords.
Other uses of wool which has been felted include padding for table legs,
bookshelves, and other furnishings which could otherwise gouge a wood floor,
and tablecloths, with the felt creating traction so that the tablecloth cannot
slide off.
Wool bedding
found to improve sleep
Scientists have discovered links between sleep quality
and health in children, adolescents, and adults. In studies, short sleep
duration has been linked to the risk of obesity, overall mortality rate, and risk
of depression among pregnant women. Secretion of growth hormone, critical for
healing and growth, has also been linked to sleep quality and quantity.
Other studies suggest that sleep quality improves when
sleeping on or under wool. This appears to be related to wool's unique
temperature and moisture management properties, and texture.
Wool is
used for upholstery
Wool makes
one of the best upholstery fabrics due to its numerous good properties such as
great comfort, good resistance to wear and tear and non-flammable properties.
Consequently, wool is suitable for all areas: offices, hotels, institutions,
homes. The wool fibre is elastic, i.e. it will expand when you sit down and
retract again when you stand up. The upholstery fabric will thus always be taut
and neat. Moreover, wool has natural dirt repellent properties that keep the
upholstery fabric neat for many years. The disadvantage of wool is that it may
need to be dry-cleaned.
Muhammad Sazzad Hussain
B.Sc. in Textile Engineering
Daffodil International University
Email : textileknowledge99@gmail.com
Phone Number : +8801684380984
Muhammad Sazzad Hussain
B.Sc. in Textile Engineering
Daffodil International University
Email : textileknowledge99@gmail.com
Phone Number : +8801684380984
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