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Topics - smriti.te

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Biocompatibility is of prime importance if textile materials are to be accepted by the body and four key factors will determine how the body reacts to the implants
   1.The most important factor is porosity, which determines the rate at which human tissue  will grow and encapsulate the implant.
   2. Small circular fibres are better encapsulated with human tissue than larger fibres with irregular cross sections.
   3. The fibre polymer must not release toxic substances, and  fibre should be free from surface contaminants such as lubricants and sizing agents.
   4. Biodegradable

47
Textile Engineering / Special Fibre used in medical textile
« on: March 01, 2015, 12:12:13 PM »
Collagen
This is obtained from cow skin.It is a protein available either in hydrogel or fibre form.Collagen fiber when used as suture are equally strong as silk and are biodegradable.
Calcium Alginate:This is made from brown seaweed.This fibre possess healing properties.
Calcium alginate fibres have been proven to be wound healing.Wound dressing made from such fibres are non-toxic,biodegradable and haemostatic

Chitin:This is a polysaccharide that is obtained from crab and shrimb shell.
It has excellent antithrombogenic characterestics.
It can be absorbed by the body and promote healing.
Artificial skin made from chitin non woven fabric stimulate new skin formation.

48
Textile Engineering / Market report of technical textile
« on: January 13, 2015, 10:11:42 AM »
Market Research Reports : Transparency Market Research has released a new market report titled “Technical Textiles (Mobiltech, Buildtech, Meditech, Agrotech and Others) Market By Technology (Thermoforming, 3-D Weaving, 3-D Knitting and Others) – Global Industry Analysis, Size, Share, Growth, Trends and Forecast, 2012 – 2018″, According to the report the demand for technical textiles that was worth USD 133.93 billion in 2012 is expected to increase to USD 160.38 billion by the end of 2018. In terms of volumes, the global demand is expected to reach 30.71 million tons by 2018, growing at a moderate CAGR of 3.3% from 2012 to 2018.
Asia Pacific dominated the global technical textiles market and accounted for 45% of the total market in 2011. By 2018, Asia Pacific is expected to generate revenues of about USD 61.26 billion

49
Textile Engineering / Recent development in medical textile
« on: January 06, 2015, 09:48:38 AM »
Textiles and textile fibres have long played a vital role in the medical and health care sector. Traditional products include bandages for covering wounds, sutures for stitching together the sides of open wounds to promote healing, substrates for plaster of Paris casts, and incontinence products. However, the role played by fibre-based materials has advanced dramatically in recent years. For example, bioglass fibres are now used in tissue engineering to create new bone structures, and textile scaffolds are being used to promote cell growth and build cell structures. Textile-based stents—small cylindrical tubes made from biocompatible materials—are helping to support and keep open veins and arteries. Many are complex structures and require the use of sophisticated manufacturing technologies. Textile stents can also be biodegradable over a predetermined period of time, thus avoiding the need to remove them surgically when they are no longer needed. Fibres are also being used in nerve regeneration techniques to repair injuries resulting from trauma or surgery. Furthermore, devices made of textile fibres can be implanted to release therapeutic drugs at controlled rates and for controlled lengths of time.

50
Textile Engineering / properties of good size material
« on: December 02, 2014, 03:11:21 PM »
Properties of a Good Sizing Material
Environmentally safe (nonpolluting)
Good film former
Reasonable use economics
Penetration of yarn bundle
Elasticity
Good film flexibility
Good specific adhesion
Good frictional properties (lubricity)
Transparency
Bacterial resistance (mildew)
Reasonable strength
Controllable viscosity (fluidity)
Water soluble or water dispersible
Good hygroscopicity characteristics
Uniformity
Clean split at bust rods
Improves weaving efficiencies
No effect on drying
Reasonable extensibility
Recoverable and reusable (or treatable)
Low static propensity
No skimming tendency
Easily removed (desized)
Easily prepared
Lack of odor
No beam blocking
Compatible with other ingredients
Good abrasion resistance
Neutral pH
High fold endurance
Insensitive to high heat (over drying)
Low BOD
No build-up on dry cans
Reduced shedding
Rapid drying
No redeposition of size
Insensitive to changes in relative humidity

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Textile Engineering / Leading the way in specialty fabrics
« on: December 02, 2014, 10:59:12 AM »
Formerly known as IFAI Expo Americas, IFAI Specialty Fabrics Expo aligns with the industry’s flagship publication, Specialty Fabrics Review, and strategically focuses on the needs of the traditional market segments.

The growth and demand for advanced textile applications led to IFAI’s establishment of the Advanced Textiles Expo, to meet the needs of the top level of the industry supply chain and companies that supply roll goods, material and other products or services for advanced applications.

These events, held Oct. 14-16 in Minneapolis, Minn., will focus on connecting people, promoting products and advancing ideas with:

    The broadest marketplace connecting thousands of attendees with more than 400 exhibitors
    Global connections and networking through events, education and meetings
    Comprehensive programming to generate ideas, provide solutions and promote business growth
    Numerous experiences showcasing the breadth and innovation of the industry

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