96
INTRODUCTION TO TECHNICAL TEXTILES(GEO-TEXTILE, MEDICAL TEXTILE. ,ETC) By Gurumurthy.B.R [email protected]/[email protected]

73641285 Introduction to Technical Textile Medical Textile

Embed Size (px)

Citation preview

Page 1: 73641285 Introduction to Technical Textile Medical Textile

INTRODUCTION TO TECHNICAL TEXTILES(GEO-TEXTILE, MEDICAL TEXTILE. ,ETC)

[email protected]/[email protected]

Page 2: 73641285 Introduction to Technical Textile Medical Textile

2

Definition

Other terms used Industrial Textiles

Functional Textiles

Performance Textiles

Engineering Textiles

Invisible Textiles

High-tech Textiles

Technical Textiles are textile materials manufactured mainly for their technical performance and functional properties.

Technical Textiles

Page 3: 73641285 Introduction to Technical Textile Medical Textile

3

Some examples of day-to-day use of Technical Textiles

Kitchen –Floor Mops, Tea Bags, Coffee Filters.

Clothes – Collar / Cuff Interlinings, Shoulder Pads, Waddings in Jackets.

Shoe – Lining, Insoles, Toe Stiffners, Synthetic Uppers.

Car – Carpets, Roof-liners, Seat belts, Tyres, Airbags.

Civil Engineering – Geotextiles in Roads, Railway Tracks, Soil Erosion, Slope Stabilisation, Flyovers, Pond/Canal lining, Landfills.

Furnishing – Carpets, Vertical Blinds, Wall Coverings.

Factory – Dust Collection Filter Bags, Liquid Filtration, Clean Air Filters of AC systems, Battery separators.

Hospital – Masks, Gowns, Caps, Bandage.

Hygiene – Baby Diaper, Sanitary Napkin, Wet Tissues, Incontinence Diaper.

Bed – Blanket, Quilts, Mattresses, Bed sheets, Pillows.

Technical Textiles

Page 4: 73641285 Introduction to Technical Textile Medical Textile

TYPES OF TECHNICAL TEXTILES

According to the end use, technical textiles can be divided into

different categories.AGROTECH: These are the Agro-textiles, also known as

Agrotex, that are used in agricultural applications releated to

growing and harvesting of crops and animals.BUILDTECH: These are the Construction Textiles, also known

as Buildtex, used in construction and

architectural applications. Such fabrics as PVC coated high

tenacity PES, teflon coated glass fiber fabrics are used

in airports and hotels.CLOTHTECH: These are the clothing textiles, also known as

clothtex.GEOTECH: These are the Geotextiles, also known as Geotex,

which are woven, nonwoven and knit fabric used for many

functions such as support, drainage and separation at or

below ground level:

Page 5: 73641285 Introduction to Technical Textile Medical Textile

TYPES OF TECHNICAL TEXTILES

HOMETECH: These are the Domestic Textiles, also known as Hometex, used in making of many home furnishing fabrics including carpet backings, curtains, wall coverings, etc.

INDUTECH: These are the Industrial Textiles, also known as Indutex, used in different ways by many industries for activities such as separating, and purifying industrial products, cleaning gases.

MEDTECH: These are the Medical Textiles, also known as Medtex. They include all the medical fabrics that are used in health and hygiene applications in both consumer and medical markets.

MOBILTECH: These textiles, also known as Mobiltex, are used in transport industry, such as in construction of automobiles, railways ships etc.

ECO TECH(OEKOTECH): These are the Eco-friendly Textiles, also known as oekotex or Ecotex. They are mostly used in environmental protection applications, floor sealing, erosion protection, air cleaning, prevention of water pollution, water cleaning, waste treatment/ recycling, depositing area construction.

Page 6: 73641285 Introduction to Technical Textile Medical Textile

TYPES OF TECHNICAL TEXTILES

PACKTECH: These are the packaging Textiles, also known as Packtex. Textiles have been used for packaging since ages.

PROTECH: These are the Protective Textiles, also known as Protex, that are used in the manufacturing of protective clothing of different types. Protection against heat and radiation for fire fighter clothing, against molten metals for welders, for bullet proof jackets or for chemical protective clothing all depend on the use of protech. The protective textiles are made with the help of specialty fibers such as aramid fiber used in making of bullet proof jackets, glass fibers used in fire proof jackets etc.

SPORTTECH: These are the sports Textiles, also known as sporttex, used

mainly for making sports wear including sports shoes and

other sports accessories.

Page 7: 73641285 Introduction to Technical Textile Medical Textile

Technical Textile Products Inspected By QA Wing of DGS&D

MEDITEX :- Surgical Gloves , Bandage cloth , Wool Cotton

Obsorvant & Coir Mattresses. BUILDTEX: - Cotton canvas tarpaulins , HDPE tarpaulins, Mats

Door

& Matting Coir. HOMETEX:- Mosquito Net. CLOTHTEX:- Shoes Canvas, Jungle Boots, P.C.Suiting ,shirting,

Terry Towel, Blankets etc. PACKTEX:- HDP Bags, B-twill Bags. SPORTEX:- Tents, Sleeping Bags. INDUTEX:- Ropes. PROTEX:- High visibility Cloths, Mosquito Net fire retardant. MOBILTEX:- Helmets, Webbing, Tyre & Tubes.

Page 8: 73641285 Introduction to Technical Textile Medical Textile

8

Fibre Consumption of textiles

Textle consumption

78%

Technical textiles22%

World Scenario Technical Textiles

Total consumption – 60 bn. kgs. (2000)

43

17

Page 9: 73641285 Introduction to Technical Textile Medical Textile

9

Technical textile consumption by Region

USA 23%

Western Europe22%

China13%

Japan7%

India3%

Rest of World32%

World Scenario Technical Textiles

Total consumption – 17 bn. kgs. (2000)

Page 10: 73641285 Introduction to Technical Textile Medical Textile

10

Fiber consumption in Technical Textiles

World Scenario Technical Textiles

Viscose3%

O ther Cellulosic

3%

Polyolifin25%

Poly

amid

e 7% Polyester

25%

Jute, coir etc

14%

Cotton7%Glass

15%

O thers*1%

* - Others include specialised fibres & yarns / high performance fibres /yarn.

Page 11: 73641285 Introduction to Technical Textile Medical Textile

11

Fabric67%

Unspun fibres24%

Yarn Type Products

9%

Product wise consumption

World Scenario Technical Textiles

Page 12: 73641285 Introduction to Technical Textile Medical Textile

12

Global end use of fabricOther Fabrics

2%

Woven fabrics73%

Non woven Fabrics

20%

Knitted Fabrics5%

World Scenario Technical Textiles

Total fabric consumption – 11 bn. kgs. (2000)

Page 13: 73641285 Introduction to Technical Textile Medical Textile

13

End use consumption of nonwoven fabrics

protech1%

sporttech1%

packtech1%

bulidtech15%clothtech

14%

indutech12%

medtech33%

geotech3%

agrotech2%

mobiltech6%

hometech12%

Others 14%

World Scenario Technical Textiles

Total consumption – 2.2 bn. kgs. (2000)

Page 14: 73641285 Introduction to Technical Textile Medical Textile

Packtech35%

Clothtech17%

Hometech12%

Indutech8%

Mobiltech7%

Sportech7%

Buildtech5%

Meditech4%

Protech3%

Agrotech1%

Geotech1%

Oekotech0%

Segmentation of Indian Technical Textiles market

Page 15: 73641285 Introduction to Technical Textile Medical Textile

WHAT IS AGROTEXTILE• Special textiles that are manufactured for agricultural applications• These textile structures are used as controlling environment for

plants/animals in applications like– Agriculture– Horticulture – Animal husbandry

• Benefits Of Agrotextile Products

Used in Protected Cultivation For Indian Agriculturists for improved Productivity & Quality Of Produce and lower Cost Of Production

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 16: 73641285 Introduction to Technical Textile Medical Textile

• Sunlight – direct and indirect• Water• Climatic Conditions including wind, hail,

humidity• External factors like birds, insects, weeds• Post Harvest handling of produce – storage

and packaging

• In India, presently Agricultural Activities are carried out under Natural Conditions of Temperature and Humidity

SASMIRA

FACTORS INFLUENCING AGRICULTURAL ACTIVITIES

MOT,GOI Workshop, 18.9.08

Page 17: 73641285 Introduction to Technical Textile Medical Textile

• Yield percentage is unsatisfactory

• Quality of produce is marred

• Damages to the produce

• Regional limitation on cultivation

• Seasonal limitation on cultivation

THE ABOVE FACTORS CAN BE EFFECTIVELY CONTROLLED USING

AGROTEXTILE PRODUCTS

CONSEQUENCES OF ABSENCE OF CONTROL FACTORS

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 18: 73641285 Introduction to Technical Textile Medical Textile

AGRO TEXTILE PRODUCTS AND THEIR APPLICATION IN AGRICULTURE

PRODUCT APPLICATION IN AGRICULTURE ANIMAL HUSBAN-

DARY

FISHING

CROP PRODUCE

FLORICUL - TURE

HORTICUL- TURE

POST HARVESTING

KNITTED NETS

SHADING

BIRD PROTECTION

WIND SHIELDS

ANTI-HAIL

HARVESTING

FISHING

MILCHING

PACKAGING

SUPPORT NETS

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 19: 73641285 Introduction to Technical Textile Medical Textile

AGRO TEXTILE PRODUCTS AND THEIR APPLICATION IN AGRICULTUREContd…

PRODUCT APPLICATION IN AGRICULTURE ANIMAL HUSBAN-

DARY

FISHING

CROP PRODUCE

FLORICUL - TURE

HORTICUL- TURE

POST HARVESTING

NONWOVEN FABRICS MULCHMAT CATTLE SHED

UNDERLAY

PROTECTIVE CLOTHING

WOVEN FABRICS PACKING SACKS

SUNCREENS

PROTECTIVE CLOTHING

PLASTIC SHEETS

GROUND COVERS

GREENHOUSE FILMS

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 20: 73641285 Introduction to Technical Textile Medical Textile

Agrotextile Product Details Bird Protection Net

Polypropylene monofilament / Polyethylene Tape yarns, Warp knitted, 2 – 3 cm mesh size, 40 – 80 g/sq.m. Woven structures of lighter weight are also used

Shading net Polypropylene monofilament / Polyethylene Tape yarns,

Warp knitted, mesh size as per the required shading %, 40 – 80 g/sq.m. Woven structures of lighter weight are also used

Windshield fabrics Polypropylene monofilament / Polyethylene Tape yarns,

Warp knitted, mesh size as per the required wind blocking %, 40 – 90 g/sq.m. Woven structures of lighter weight are also used

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 21: 73641285 Introduction to Technical Textile Medical Textile

Agrotextile Product Details, contd..

Plant nets Polypropylene monofilament /

Polyethylene Tape yarns, Warp knitted, Strips of nets with large opening, 30 -40 g/sq.m

Harvesting nets Polypropylene monofilament /

Polyethylene Tape yarns, Warp knitted, Flat nets of square or triangular construction, of mesh size 8 – 12 mm, 40 – 90 g/sq.m. Woven structures of lighter weight are also used

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 22: 73641285 Introduction to Technical Textile Medical Textile

Agrotextile Product Details, contd.. Mulch Mat

Polypropylene, spunbonded, 60 – 80 g/sq.m. Woven biodegradable structures are also used

Packing Material Polyethylene Tape yarn, Warp

knitted, 50 – 60 g/sq.m

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 23: 73641285 Introduction to Technical Textile Medical Textile

OEKOTECH

&

VARIOUS PRODUCTS

To

PROTECT ENVIRONMENT

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 24: 73641285 Introduction to Technical Textile Medical Textile

Oekotech is an important areas of technical textiles. Used for environmental protection and waste disposal. Its use is based on environmental damages for:

• Building demolition• Power plant ash• Sewage treatment sludge• Incinerated waste ash• Municipal waste• Untreated hospital waste• Hazardous waste• Radioactive waste

OEKOTECH

SASMIRA

MOT,GOI Workshop, 18.9.08

Page 25: 73641285 Introduction to Technical Textile Medical Textile

• Geogrids - reinforce slopes beneath the waste, walls, cover soils above geomembranes;

• Geonets - in-plane drainage;• Geomembranes – a barrier to liquids, gases and/or vapors and

landfill caps; • Geocomposites –for separation, filtration or drainage;• Geosynthetic clay liners (GCLs) - an infiltration/hydraulic

barrier; used also for mine rehabilitation, tunnels, secondary containment

• Geopipes - landfill applications to facilitate collection and rapid drainage of the leachate to a sump and removal system;

• Geotextiles - filtration purpose or as cushion to protect the geomembrane from puncture.

OEKOTECH PRODUCTS & USESSASMIRA

MOT,GOI Workshop, 18.9.08

Page 26: 73641285 Introduction to Technical Textile Medical Textile

From ancient times the textile materials were used for medical applications in India viz. surgical sponge, linen, silk sutures, strips, catgut, etc.

Latest technological developments has enabled extensive use of technical textiles in healthcare industry today.

Introduction

Page 27: 73641285 Introduction to Technical Textile Medical Textile

Sutures (biodegradable and non biodegradable)

soft tissue implants Artificial tendon (meshes) Artificial ligament Artificial cartilage, Orthopedic implants artificial joint Cardiovascular implants vascular grafts Heart valves

Usage category

In theMedical Textiles – bio-contact for days to months

Page 28: 73641285 Introduction to Technical Textile Medical Textile

Simple bandages Light support bandages Compression bandages Orthopedic bandages Surgical GauzeCottonSlingsDiapersEye PadsDrapersSanitary productsPatient Hospital UniformAdhesive tapes

On the Patient – bio-contact for minutes to hours

Page 29: 73641285 Introduction to Technical Textile Medical Textile

In the Patient (Intra-corporal applications)

On the Patient

Near the Patient

For the Patient

Categorisation of Technical textiles in Medical Field

Page 30: 73641285 Introduction to Technical Textile Medical Textile

Sutures (biodegradable and non biodegradable)

soft tissue implants Artificial tendon (meshes) Artificial ligament Artificial cartilage, Orthopedic implants artificial joint Cardiovascular implants vascular grafts Heart valves

Usage category

In the Patient – bio-contact for days to months

Page 31: 73641285 Introduction to Technical Textile Medical Textile

Simple bandages Light support bandages Compression bandages Orthopedic bandages Surgical GauzeCottonSlingsDiapersEye PadsDrapersSanitary productsPatient Hospital UniformAdhesive tapes

On the Patient – bio-contact for minutes to hours

Page 32: 73641285 Introduction to Technical Textile Medical Textile

Near the Patient – No bio-contact, ordinary contact possible

Bed sheetPillow coverOther linen items viz. Blanket, Hand Towels etc.Heating Pad

Page 33: 73641285 Introduction to Technical Textile Medical Textile

Face MaskGownsCapsApronsMopsShoe Cover

For the Patient – No contact

Page 34: 73641285 Introduction to Technical Textile Medical Textile

Healthcare/ hygiene products

Include bedding, clothing, surgical clothes, products for feminine hygiene like sanitary napkins, baby and adult diapers etc.

Non-implantable materials

For wound care that includes absorbent pad (wound contact layer, base material viscose, plastic film) and bandages (simple inelastic/elastic, orthopaedic, plasters, gauzes, lint, padding)

Areas of usage

Page 35: 73641285 Introduction to Technical Textile Medical Textile

A range of natural fibers and biodegradable polymers with non-biodegradable synthetic polymers are being utilised for developing new products in medical textiles.

Since the medical textile applications are directly related to the life of human being, these are required to undergo stringent testing and hygienic criteria.

This led to innovative use of variety of fibers and lot of developments taking place in this field.

Page 36: 73641285 Introduction to Technical Textile Medical Textile

•Cotton  •Polyester  •Polypropylene  •Viscose glass fiber  •Wood fluff  •Polyamide   

Fibers used in manufacturing of nonwovens for medical applications 

Page 37: 73641285 Introduction to Technical Textile Medical Textile

Quality Standards as per FDA

Item Threads per

Dimensions

Weight in g/m2

Length and Width

Other

Bandage Cloth

Wrap 150, Weft 85

57 tolerance of 5%

99 % of size mentioned on the label

Foreign MatterNot more than 2%

Absorbent Gauze

Wrap 75, Weft 55

30 tolerance of 5%

98 % of size mentioned on the label

Foreign MatterNot more than 1%Avg. sinking time not more than 10 secs.

Roll Bandage for POP

Wrap 150, Weft 75

35 tolerance of 5%

98 % of size mentioned on the label

Standards prescribed by FDA for some of the items is tabulated below

Page 38: 73641285 Introduction to Technical Textile Medical Textile

Textiles are very important in all aspects of medicine and surgery.

Advances in nonwovens have resulted in a new breed of medical textiles.

Advanced composite materials containing combination of fibres and fabrics have been developed for applications where biocompatibility and strength are required.

It is predicted that the nonwoven materials will continue to have greater impact in this sector because of large member of characteristics and performance criteria required from these materials. 

Conclusion

Page 39: 73641285 Introduction to Technical Textile Medical Textile

MARINE TEXTILES

Page 40: 73641285 Introduction to Technical Textile Medical Textile

MOBILTECH

AUTOMOBILES

RAILS

AEROSPACE

MARINE

Page 41: 73641285 Introduction to Technical Textile Medical Textile

THEME

FIBRES USED

FABRICS &

COMPOSITES

REQUIREMENT

SAPPLICATIONS

& PRODU

CTS

TESTS REQUIR

ED

CONCLUSION

Page 42: 73641285 Introduction to Technical Textile Medical Textile

FIBRES USEDCOTTON GLASS

WOOLPOLYESTER

CARBON ACRYLIC

NYLONARAMID

Page 43: 73641285 Introduction to Technical Textile Medical Textile

FLAT WOVENFLAT WOVEN VELVET

KNITTEDCIRCULARWARP KNIT TRICOTDOUBLE NEEDLE BAR KNIT

COATED & LAMINTEDFOAM FABRICTRIM FABRIC

COMPOSITESUSING FIBRES LIKE CARBON,GLASS,ARAMID,BORON,CERAMIC WITH RESIN FRP CAN MADE

FABRICS USED

Page 44: 73641285 Introduction to Technical Textile Medical Textile

CHARACTERISTICS OF FIBRES

Resistance to sunlight and UV degradation

Abrasion resistance

Reduced flammability

Soil resistance and easy cleanability

Resistant to microbes and other bacteria

Hard, strong with high tear as well tensile strength

Softer handle and touch

Very high bursting strength(sails)

Page 45: 73641285 Introduction to Technical Textile Medical Textile

APPLICATIONSSails

• Life rafts buoyancy tubes, canopies, minesweepers, sonar domes, corrosive-cargo carriers, Life jackets, personal flotation devices.

Inflatable craft

Hovercraft skirts

Furnishing fabrics

Oil booms

Nets and Ropes

Functional applications

Page 46: 73641285 Introduction to Technical Textile Medical Textile

SAILSDefinitionA Textile material extended on rigging

to catch wind and propel a boat.

Requirements: light weight, dimensional stability Puncture resistance, high tear

strength high seam strength Low porosity to wind, low water

absorbency Good resistance to microbes

UV degradation and smoothness

Page 47: 73641285 Introduction to Technical Textile Medical Textile

Cont…

Natural fibres are replaced by

polyester and nylon materials.

Polyester film laminated on nylon

and polyester fabrics.

Recent trends are using carbon,

ultra high modulus polyethylene

yarns Spectra and Dyneema

Aramid fibres are avoided due to

poor UV-stability.

Page 48: 73641285 Introduction to Technical Textile Medical Textile

INFLATABLE CRAFT

Nylon woven fabric

(145gsm)

For lighter craft woven from

470dtex.

Heavier yarns, like 940

d/tex used for larger boats.

Aramid fibres at 85gsm can

also be used.

For economical craft

polyurethanes & PVC

materials are used.

Life boats and rescue

craft

Freight carrying vessels

Pleasure Craft

Several military

applications

Page 49: 73641285 Introduction to Technical Textile Medical Textile

FURNISHING FABRICS

Cruise ships can be regarded as

FLOATING HOTELS. So quality of textiles

must be standard

High flame retardancy standards due to

narrow corridors and low ceilings

Dyes must be fast to fast to light, rubbing

and salt water

wool carpets are generally Zirpro treated

titanium /zirconium salt)

Durable Anti-static properties are needed

conductive fibres are more durable than

finishes

Page 50: 73641285 Introduction to Technical Textile Medical Textile

Nylon fabric is coated with

polychloroprene / natural

rubber blend or natural

rubber/polybutadiene.

The nylon cords like 940dtex/2

and 940 dtex/3/3.

This is highly twisted to impart

fatigue resistance.

Though aramid fibres are

stronger but due to poor fatigue

resistance not used in this

application.

HOVERCRAFT SKIRTS

Hovercraft can be

deployed on terrain

such as marshes

where boats cannot

go.

Page 51: 73641285 Introduction to Technical Textile Medical Textile

These articles are designed to contain accidental oil

spillages in rivers and ocean.

woven nylon or polyester as a base

fabric(175gsm)coated with Hypalon, polychoroprene,

PVC or PVC/ nitrile rubber, urethane .

The material should be oil resistant.

OIL BOOMS

Page 52: 73641285 Introduction to Technical Textile Medical Textile

Where ropes need to stretch and to

absorb high-impact energies.

Nylon ropes, followed by polyester ropes

are popular olden days.

Second generation of synthetic fibers-

aramid, high-modulus polyethylene,

Vectran & PBOone-tenth its weight when

compare to steel.

The low weight and high strength of HPPE

fibres to produce heavy-duty ropes. Its

normally Float on water, are flexible and

have a low elongation.

ROPES AND NETS

Page 53: 73641285 Introduction to Technical Textile Medical Textile

FUNCTIONAL APPLICATIONS life rafts, buoyancy tubes, canopies and

life jackets, and personal flotation

devices, minesweepers, sonar domes

and in corrosive-cargo carriers.

Life jackets made by woven polyamide

coated with butyl or polychloroprene

rubber to get gsm of 230–290.

Quality tests include air porosity,

coating adhesion, breaking and tear

strength both in the warp & weft

direction, flexing & waterproofness.

Page 54: 73641285 Introduction to Technical Textile Medical Textile

CUSTOM BOAT INTERIOR

Nomex@ core, sandwiched between layers of woven aramid fiber

Page 55: 73641285 Introduction to Technical Textile Medical Textile

OTHER PRODUCTS

Page 56: 73641285 Introduction to Technical Textile Medical Textile

POPULAR BRANDS

Page 57: 73641285 Introduction to Technical Textile Medical Textile

TEST METHODSProperty British standards Other related

standards

Abrasion resistance

BS 3424-24:1990 (1996)Methods 27A and 27BBS 5690 (Martindale)

ASTM D 3389-94(rotary)

Tear strength BS 3424:1982 (1996)Methods 7A, 7B, 7C

ASTM D 1424(Elmendorf)

Water resistance – raintests

BSEN 29865(Bundesmann)BS 5066:1974 1993(WIRA)

AATCC 35-1AATCC 42 (impact)994

Tensile strength breaking and elongation

BS 1932 for yarns and threadsBS 3424 Pt 5 for coated fabrics

ASTM D 751 for coated fabrics/ ASTM D 1578-93 yarns bySkein method

Dimensional stability

BS 4736:1996 cold water SAE J883 Jan 94 cold waterSAE J315A

Fogging BS AU 168:1978 SAE J1756:1994

Page 58: 73641285 Introduction to Technical Textile Medical Textile

TESTS FOR PRODUCTSPRODUCTS Standard Comments

Buoyancy aids, rescue devices

BSEN 12628:1999 UL 1123

Life jackets and personal buoyancy aids

BSEN 393:1994 to 396:1994

BSEN

Recreational inflatable's

- UL 1180

Upholstery BS 5790 (PVC) ASTM D 4852 (attached)ASTM D 3690 (PU/PVC)

Tarpaulins BS 3408:1992 (1995) (ASTM D 751-98)

Marine IMO Regulations e.g. IMO Resolution A471 (XII) for fire resistance

-

Page 59: 73641285 Introduction to Technical Textile Medical Textile

MARKET STATUS

Rubber coated fabrics including those coated with

natural rubber neoprene,silicone, rubber or butyl

rubber will post the fastest gains in 2012.

Through 2010 polyester will remain the most

commonly used coated fabric because of its low cost

and versatility.

Page 60: 73641285 Introduction to Technical Textile Medical Textile

FUTURE

RECYCLE

BIO-DEGRADABL

EOTHER

DEVELOPMENTS

CONCLUSION

Page 61: 73641285 Introduction to Technical Textile Medical Textile

Geo-Textiles

Page 62: 73641285 Introduction to Technical Textile Medical Textile

Geo Drains Geo Separations

MSEReinforcement

Geotextile Applications in Roads

Page 63: 73641285 Introduction to Technical Textile Medical Textile

ASTM D4439 defined a geotextile as followsGeotextile : A permeable geosynthetic

comprised solely of textiles. Geotextiles are used with foundation, soil, rock, earth, or any other geotechnical engineering-related material as an integral part of a human-made product structure, or system.

Due to the very wide range of applications and the tremendous variety of available textiles having widely different properties, the selection of a particular design method or design philosophy is a critical decision that must be made before the actual mechanics of the design process are initiated.

Page 64: 73641285 Introduction to Technical Textile Medical Textile

Geotextile Functions and Mechanisms

An overview of geotextiles, alluded to many applications falling into categories:

Separation

Reinforcement

Filtration

Drainage

Containment

When properly identified, lead to the design-by-function method.

Page 65: 73641285 Introduction to Technical Textile Medical Textile

Geotextile choices as available

1. Lightweight Wovens2. Heavyweight

Wovens3. High Flow Wovens4. High Strength

Wovens5. Thermally Bonded

Non-wovens6. Needle punched Nonwovens

Page 66: 73641285 Introduction to Technical Textile Medical Textile

Separation

Geotextile Functions and Mechanisms

Bituminious Courses

Aggregate Bases

Geotextile Layer

Subgrade

Desig

ned

Th

ickn

es

s

Page 67: 73641285 Introduction to Technical Textile Medical Textile

Filtration and Drainage

Geotextile Functions and Mechanisms

Bituminious Courses

Aggregate Bases

Geotextile Layer

Aggregate Drainage Layer

Subgrade

Page 68: 73641285 Introduction to Technical Textile Medical Textile

Reinforcement

Geotextile Functions and Mechanisms

This is the synergistic improvement in the total system strength created by the introduction of a geotextile into a soil and developed primarily through the following three mechanisms:

One, lateral restraint through interfacial friction between geotextile and soil/aggregate.

Two, forcing the potential bearing surface failure plane to develop at alternate higher shear strength surface.

And three, membrane type of support of the wheel loads.

Page 69: 73641285 Introduction to Technical Textile Medical Textile

Sealing Function

Geotextile Functions and Mechanisms

New Overlay

Reflective Crack without Paving

Fabric

Old Pavement

Base CoursePavem

en

t C

rack

wit

h P

avin

g

Fab

ric

Page 70: 73641285 Introduction to Technical Textile Medical Textile

Major Applications of GeotextilesSeparation of Dissimilar Materials

Between subgrade and stone base in paved roads and airfields

Between landfills and stone base coursesBetween geomembranes and soil drainage

layersBetween foundation and embankment soils

for surcharge loadsBetween foundation and embankment soils

for roadway fillsBetween foundation and encapsulated soil

layersBetween foundation soils and rigid

retaining wallsBetween slopes and downstream stability

bermsBeneath precast blocks and panels for

aesthetic paving e.g. hardscaping

Page 71: 73641285 Introduction to Technical Textile Medical Textile

Major Applications of Geotextiles

Separation of Dissimilar materials

Between drainage layers in poorly graded filter blankets

Between old and new asphalt layers

Reinforcement of Weak Soils and Other Materials

To reinforce embankmentsTo aid in construction of steep slopesAs basal reinforcement over soft soilsTo bridge over cracked or jointed rockTo create more stable side slopes due to

high frictional resistance

Page 72: 73641285 Introduction to Technical Textile Medical Textile

Major Applications of GeotextilesFiltration (Cross-Plane Flow)

Beneath stone base for paved roads and airfields

Around crushed stone surrounding under drains

Around perforated under drain pipe As a flexible form for restoring scoured

bridge pier bearing capacityBetween backfill soil and weep holes in

retaining walls Between backfill soil and gabions As a filter beneath precast blocks

Page 73: 73641285 Introduction to Technical Textile Medical Textile

Major Applications of Geotextiles

Drainage (In-Plane Flow)

As a drain behind a retaining wall As a drain at the base of retaining wall As a replacement for sand or wick drains

Page 74: 73641285 Introduction to Technical Textile Medical Textile
Page 75: 73641285 Introduction to Technical Textile Medical Textile
Page 76: 73641285 Introduction to Technical Textile Medical Textile
Page 77: 73641285 Introduction to Technical Textile Medical Textile
Page 78: 73641285 Introduction to Technical Textile Medical Textile

These are geocomposites formed of a hollow cored, geotextile wrapped drainage element (geonet) inserted vertically into soft ground to speed up the consolidation process.

Prefabricated Vertical Drain

Installation of PVD

Band Drains / Prefabricated Vertical Drains (PVD)

Page 79: 73641285 Introduction to Technical Textile Medical Textile

Band Drains / Prefabricated Vertical Drains (PVD)Kandla Port – Ground improvement

Band drains has been adopted to increase the bearing capacity of the site. The following parameters have been adopted:

Scheme SBC before

treatment(T/m2)

Spacing of Band Drain

with Triangular Grid (m)

Preload Height

(m)

Duration(Days)

SBC after treatment

(T/m2)

Scheme-1 2.00 1.25 4.00 80 10.21

Scheme-2 2.00 1.50 4.00 120 10.11

Page 80: 73641285 Introduction to Technical Textile Medical Textile

Band Drains / Prefabricated Vertical Drains (PVD) at Kolkata

Page 81: 73641285 Introduction to Technical Textile Medical Textile

Emerging Issues

R&D Needs of the Indian Geotechnical Industry

The Need to Encourage the Domestic Synthetic Manufacturing Industry

Need for Establishing a Geosynthetic Institute in India

Standardization in the Field of Geosynthetics

Geosynthetics Test Standards and Specifications

Page 82: 73641285 Introduction to Technical Textile Medical Textile

Nano technology

Page 83: 73641285 Introduction to Technical Textile Medical Textile

Nanotechnology

is already making today’s products: Lighter Stronger Faster Smaller More Durable

Page 84: 73641285 Introduction to Technical Textile Medical Textile

How small is Nano - small?

Units in nanometers (µm)

Page 85: 73641285 Introduction to Technical Textile Medical Textile

Compared to Human Hair

A Human Hair is about 100,000µm wide

Page 86: 73641285 Introduction to Technical Textile Medical Textile

Nanotechnology spans many Areas

NANOTECHNOLOGY

InformationTechnology

Mechanical Eng. &

Robotics

Biotechnology

Transportation

NationalSecurity &Defense

Food andAgriculture

Energy &Environment

Aerospace

AdvanceMaterials & Textiles

Medicine /

Health

NANOTECHNOLOGY

InformationTechnology

Mechanical Eng. &

Robotics

Biotechnology

Food andAgricultureAerospac

e

AdvanceMaterials & Textiles

Medicine /

Health

Energy &Environment

NANOTECHNOLOGY

InformationTechnology

Mechanical Eng. &

Robotics

Biotechnology

Food andAgricultureAerospac

e

AdvanceMaterials & Textiles

Medicine /

Health

NANOTECHNOLOGY NationalSecurity &Defense

Food andAgriculture

Energy &Environment

Aerospace

AdvanceMaterials & Textiles

Medicine /

Health

NANOTECHNOLOGY

Food andAgricultureAerospac

e

AdvanceMaterials & Textiles

Medicine /

Health

Energy &Environment

NANOTECHNOLOGY

InformationTechnology

Food andAgricultureAerospac

eMedicin

e /Health

Mechanical Eng. &

Robotics

NANOTECHNOLOGY NationalSecurity &Defense

Food andAgriculture

Energy &Environment

Aerospace

Medicine /

Health

NANOTECHNOLOGY

Food andAgricultureAerospac

eMedicin

e /Health

Energy &Environment

NANOTECHNOLOGY

InformationTechnology

Food andAgricultureAerospac

eMedicin

e /Health

Biotechnology

Mechanical Eng. &

Robotics

NANOTECHNOLOGY NationalSecurity &Defense

Food andAgriculture

Energy &Environment

Aerospace

Medicine /

Health

NANOTECHNOLOGY

Food andAgricultureAerospac

eMedicin

e /Health

Energy &Environment

NANOTECHNOLOGY

InformationTechnology

Food andAgricultureAerospac

eMedicin

e /Health

Transportation

Biotechnology

Mechanical Eng. &

Robotics

NANOTECHNOLOGY NationalSecurity &Defense

Food andAgriculture

Energy &Environment

Aerospace

Medicine /

Health

NANOTECHNOLOGY

Food andAgricultureAerospac

eMedicin

e /Health

InformationTechnology

Food andAgricultureAerospac

eMedicin

e /Health

InformationTechnology

Mechanical Eng. &

Robotics

InformationTechnology

Biotechnology

Mechanical Eng. &

Robotics

InformationTechnology

Transportation

Biotechnology

Mechanical Eng. &

Robotics

InformationTechnology

NationalSecurity &Defense

Transportation

Biotechnology

Mechanical Engineering

/Robotics

InformationTechnology

Page 87: 73641285 Introduction to Technical Textile Medical Textile

Key Terms

Nonotechnology Nanometer Nanotube Atom Atomic Level System Atomic Structure Fluence (Laser) Defects

Dislocation Molecule Molecular Dynamics Computational Materials Science Newton’s Laws of Motion

Page 88: 73641285 Introduction to Technical Textile Medical Textile

Material Sciences

Atomic – level Simulations: Molecular Dynamics

Computational Research Dislocation Dynamics

Page 89: 73641285 Introduction to Technical Textile Medical Textile
Page 90: 73641285 Introduction to Technical Textile Medical Textile

Emphasis of Research

Atomic – level Simulations: Molecular Dynamics

Computational Research Dislocation Dynamics

Page 91: 73641285 Introduction to Technical Textile Medical Textile

Getting a Base Line on MaterialMolecular Behavior

Molecule

RelationshipTo other

Molecules

Section of Material

Page 92: 73641285 Introduction to Technical Textile Medical Textile

Determine Starting Point(Initial Conditions)Using Newton’s Second Law of

Classic Motion

i im a F

Page 93: 73641285 Introduction to Technical Textile Medical Textile

How Molecule Move…

Page 94: 73641285 Introduction to Technical Textile Medical Textile

Applications of Nanotechnology

Page 95: 73641285 Introduction to Technical Textile Medical Textile

Current Applications

burn and wound dressings, water filtration devices, paints, cosmetics, coatings, lubricants, textiles, memory/storage devices

medical diagnostics, displays, sensors, drug delivery, composite materials, solid state lighting, bio-materials, nano arrays, more powerful computers, protective armor, chem-bio suits, and chem-bio sensors

Page 96: 73641285 Introduction to Technical Textile Medical Textile

Thank you