This presentation provides an overview of nonwoven materials, including their definition, properties, production processes, bonding methods, finishing treatments, and applications. Nonwovens are sheets of fibers or filaments that are formed into a web and bonded together without weaving or knitting. They are made through processes like drylaying, spunlaying, meltblowing, and wetlaying. Common bonding methods are chemical, thermal, and mechanical. Nonwovens are used widely in hygiene products, agriculture, filtration, medical products, and packaging due to their desirable properties such as absorbency, strength, and breathability.

2. OUR PRESENTER…
prepared by : Mazadul Hasan
sheshir
Southeast University
Department Of Textile
Engineering
I/A 251,252 Tejgaon Dhaka Bangladesh

3. PRESENTATION CONTENT…
What Are Nonwoven…???
•Properties Of Nonwoven,
•How They’re Made,
• Details About Web formation,
•Web bonding,
•Finishing Treatments,
•Application Of Nonwoven.
•

4. WHAT ARE
NONWOVEN…???
“Nonwovens are unique,high-tech,engineeringed
fabrics made from fibers”
Definition Of Nonwoven : “A nonwoven is a
sheet of fibers, continuous filaments, or
chopped yarns of any nature or origin, that
have been formed into a web by any means,
and bonded together by any means, with the
exception of weaving or knitting”

5. Properties Of Nonwoven
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Abrasion resistant
Absorbent
Color fast
Dry cleanable
Durable
Filtration
Flame resistant
Long-lasting
Smooth
Washable
Weatherproof
Soft
Strong
Tear resistant

6. How They’re Made
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The production of nonwovens can be
described as taking place in three stages,
although modern technology allows an
overlapping of some stages, and in some cases
all three stages can take place at the same. The
three stages are:
Web formation
Web bonding
Finishing Treatments

7. Steps Of web Formation:
At Four Step They are made. That’s Have been given
below:
Drylaid

8. There are two methods of drylaying:
(1) Carding,
(2) Airlayding.
Spunmelt
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Spunmelt is a generic term describing the manufacturing
of nonwoven webs directly from thermoplastic polymers.
It encompasses 2 processes and the combination of
both.
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Spunlaid
Meltblown

9. Spunlaid :
In this process polymer granules are melted and molten polymer is extruded
through spinnerets. The continuous filaments are cooled and deposited on to a
conveyor to form a uniform web.

10. Wetlaid:
The principle of wetlayding is similar to paper manufacturing. The
difference lies in the amount of synthetic fibres present in a wetlaid
nonwoven. A dilute slurry of water and fibres is deposited on a moving
wire screen and drained to form a web. The web is further dewatered,
consolidated, by pressing between rollers, and dried.

11. Web Bonding: There are three basic types of bonding:
1. Chemical,
2. Thermal, &
3. Mechanical.
Chemical bonding (adhesion bonding): Chemical bonding mainly
refers to the application of a liquid based bonding agent to the web. Three
groups of materials are commonly used as binders-acrylate polymers and
copolymers, styrene-butadiene copolymers and vinyl acetate ethylene
copolymers. Water based binder systems are the most widely used. It can
be applied uniformly by impregnating, coating or spraying or intermittently,
as in print bonding.

12. Thermal bonding: This method uses the thermoplastic properties of certain
synthetic fibres to form bonds under controlled heating.
There are several thermal bonding systems in use:
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Calendering uses heat and high pressure applied through rollers to weld the
fibre webs together at speed.
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Through-air thermal bonding makes bulkier products by the overall bonding
of a web containing low melting fibres.

13. Mechanical bonding: In mechanical bonding the strengthening of the web is
achieved by inter-fibre friction as a result of the physical entanglement of the
fibres. There are two major types of mechanical bonding:
1. Needlepunching, &
2. Hydro-entanglement.
Needlepunching can be used on most fibre types. Specially designed
needles are pushed and pulled through the web to entangle the fibres. Webs
of different characteristics can be needled together to produce a gradation of
properties difficult to achieve by other means.

14. FINISHING TREATMENT
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There is an opportunity to meet the needs of the
customer even more precisely by modifying or adding to
existing properties.
Nonwovens can be made conductive, flame retardant,
water repellent, porous, antistatic, breathable, absorbent
and so on.
Converting
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The nonwoven fabric is now complete and in a roll.
Converters can take it a stage nearer its final form by
slitting, cutting, folding, sewing or heat sealing.
In this way, the quality, properties and size of the
converted nonwoven products can be further tailored to
the precise needs of the customer, and the tasks to be
performed in an impressively broad range of end-uses.

15. Application Of Nonwoven…
Absorbent hygiene products: Modern disposable absorbent
hygiene products have made an important contribution to the
quality of life and skin health of millions of people. Such as: baby
diapers, feminine hygiene products and adult incontinence products
etc benefit from the softness, smoothness, leakage prevention,
strength and protection provided by nonwoven fabrics.

16. AGRICULTURE& HORTICULTURE
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Nonwovens are used
effectively for optimizing
the productivity of crops,
gardens and
greenhouses.
In horticultural
applications, nonwovens
protect the plants against
temperature extremes by
day and by night, thus
creating the foundation
for earlier harvests with
excellent results.

17. FILTRATION
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One of the fastest growing
segments in the nonwovens
industry, filtration is characterized
by dozens of end use areas and
applications.
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Nonwovens can be engineered
very precisely to meet exacting
specifications and stringent
regulatory requirements for the
filtration of air, liquid, bacteria, dust,
gas and a myriad of other areas.
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Some examples of where
nonwovens are used:
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Air filtration
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Liquid filtration
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Automotive filtration

18. MEDICAL: Nonwovens are extensively used in the medical field and
in protection against biological agents in other sectors. For example,
they can be designed to deliver critical safety properties, such as
protection against infections and diseases.
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Some examples of
where nonwovens are
used:
Surgical: disposable
caps, gowns, masks,
scrub suits and shoe
covers
Bed linen
Lab coats
Fixation tapes
Drug delivery
Incubator mattress etc.
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The advantages of
using nonwovens
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Protection against
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Custom-made for the
operating theatre
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dry or wet contact
air-borne particles
strong yet light in weight
optimal fluid absorbency
exchange of air, body heat
and moisture
Breathability
Abrasion resistance and lint
free.

20. PACKAGING
Some examples of where nonwovens
are used
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Food contact packaging
Food wrap: meat, cheese and fish
Tea & coffee bags
Absorbent pads
Sacks, bags & sachets
Transportation
Envelopes
Sacks and bags
Protection
Sheets, bags, sacks, wraps for
delicate products (e.g. electronic
products, car bumpers, leather
goods)
Bulk products
The advantages of using
nonwovens
 Easy to recycle and compost,
 Easy to convert into pads and
shapes,
 High tear resistance.
Surabhi Premium Non Woven Rice
Packaging Bag

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To
All..
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Allah Hafez…