What is fire retardant fabric? Briefly explain about it.

What is fire retardant fabric

Fire retardant fabrics

These fabrics are fireproof clothing materials that are made from organic compounds. Flame retardant textiles are a safety fabric that is used in a number of different objects and professions. Like most organic compounds the fabric does burn at a given point. These fabrics may burn at a point but in comparison to other fabrics, these fabrics burn slower. Fabric can be classified as a fire retardant on the time it takes to burn. This is tested out in laboratories by scientists through various testing methods. If the fabric meets the safety standards they are declared and labeled as safe to use. This standard helps the buyer to know if they are buying a good quality product or not. If the fabric is not up to standards, it can cause the life of a worker. People in their workplaces depend on this fabric to protect their life from dangerous hazards.

The metal industry is one of the harshest environments to work in. Hot metal surfaces and molten metal can be found everywhere. In order to be safe from these hazardous environments, every worker should be provided with a fire retardant fabric overall.

Fire retardant fabric

Fire retardant fabrics are used to protect the wearer against fire. Air force pilots, tents and parachute fabrics, etc. are various applications. Such fabrics can be used in industrial wear for the work of firefighters, advanced motor racing apparels etc. Most of their uses are indoor products such as curtains in hotels, hospitals and theatres. Products like Twaron are used in fabrics such as firefighting to avoid high temperatures in an emergency situation. Materials such as aluminum hydroxide are often used as a fire retardant since it offers protection. It discharges water to absorb heat and cools the substance and surface of the aluminum and forms a protective layer. It then emits water vapors.

Inherent Fire Retardant Fabric

The flame resistance of the Inherently Flame Retardant fabric is permanent and indissoluble and always remains flame retardant, even with a scrap of the cloth. The substance no longer exists in the usable form if the flame retardation is stripped from the inherent material. For chemically treated fabrics this is not necessarily true. Both pieces and portions of the fabric remain flame retardant to natural FR fabrics. It would still be flame immune even if it’s buried and dug up 100 years from now. Fire retardant textiles that are naturally flame retardant will not lose flame retardation if washed or worn out, although proper care is always encouraged. Using chlorine bleach with an inherent FR fabric, for example, can fade the appearance and decrease strength, but the fabric remains flame resistant.

& more..

Inherent fire retardant textiles do not contain any chemical coating so they last longer if washed compared to chemically treated fabrics. Inherent fireproof fabrics are typically materials with a resistance to flame built into their chemical structures. Fire retardant fabric suppliers make like Kevlar and Nomex that are flame retardant fabrics. The internal fiber structure itself cannot be inflamed. The defense is embedded in the fiber itself for intrinsically flammable resistant fibers and never removed or washed away. In Nomex, the aramid fiber is swelled and thickened when exposed to flame and provides a protective barrier between the heat source and the skin. The shielding barrier stays flexible until it cools, which helps the user to avoid critical extra seconds of defense.

Treated Fire Retardant Fabric

The treated fire-retardant textiles start with flammable cotton fiber. It is often blended with nylon or polyester to make it more durable and cheaper, a synthetic fabric that can be heat resistant, and it can melt into the skin of the wearer if exposed to flash fires. So undergarment should be worn under the fabric. Such blends also come from the word “88/12” and are packed with 88 percent cotton and 12 percent nylon or polyester.

When the cotton or cotton mixture is made, the flammable material is treated in flames with a chemical flame retardant. It may not be a permanent chemical additive. Most chemically formulated textiles claim the protection lasts with due care for the life of the garment. If handled with care these garments can last a lifetime.

home ingredients

Some ingredients commonly found at home laundry. such as, chlorine bleach and hydrogen peroxide additives booster may impair the flame retardant treatment’s fire-extinguishing properties. A study of over 800 employees has shown that less than a third of the workers. used a washing machine to clean and maintain FR garments correctly. The other employees washed their FR clothes at home or at work. For situations where chlorine bleach is used in cotton or cotton-blend fabrics for non-compliant detergent or the wrong temperature, the invisible chemical safety could be compromised without the consumer ever noticing it. This jeopardizes the clothing.

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Membrane seperation for effluent & discussion

membrane seperation for effluent & discussion

Wastewater includes an oversized sort of dyestuffs and chemical addition that create environmental challenge. Principally effluent come back from colouring and finishing processes. That need the input of a good vary of chemicals and dyestuffs. That usually area unit organic compounds.



Wastewater contains high suspended solids, colloids, dissolved salt and organic matters. Therefore effluent ought to be treated. The aim of effluent treatment is to get rid of those suspended solids et al. Organic compounds as attainable before combination in water .There area unit several method that area unit wont to treat the effluent. Membrane separation method is one in all them.

Treating


Treating effluent of a pilot plant reproducing on a smaller scale a separation system supported ultrafiltration and reverse diffusion. (The method that use a partly leaky membrane to get rid of ions, unwanted molecules and bigger particles from potable in referred to as reverse osmosis)


In this technique, Effluent from coloring Associate in Nursing finishing plant once activated sludge oxidization. A microorganism biomass suspension is liable for the removal of pollutants) was treated at Associate in Nursing 800 l/h by suggests that of sand filtation followed by a separation in an radical filtration membrane module that is employed to get rid of all mixture particles (0.01 to 1.0 microns) from water and typically it removes the biggest dissolved contaminants.

Last Step for effluent sepration



Last separation step. Reverse diffusion (a pressure that push water through semi-permeable membrane and take away contaminants) eight bar pressure. Created a permeate (60% of the recess flow) that hoping on the analytical screening performed . Produced permeate will be reused all told production steps. A preliminary analysis of investment and operational prices conjointly gave encouraging indications of the economic feasibleness.

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technique


Another method that is additionally common is thought as Vapor permeation. It suggests that the transport of matter through a membrane from a vapor feed mixture to a vapor permeate. In essence, porous and/or nonporous membranes will be wont to separate vapor and gas mixtures. It works counting on the molecular size and form of their constituents. Non porous membranes area unit commonly used and in this case vapor permeation is closely associated with concentration.

Scientist in Bangladesh has invented one kind of amazing bag

Scientist in Bangladesh has invented one kind of amazing bag

Introducing of Sonali Bag

A Bangladeshi scientist has invented one kind of bag called “Sonali Bag”. Its look like transparent polythene bag. It’s made from completely bio-degradable substance. To protect from of hazard effect of polythene goods. Scientist over the globe trying to replace that effect by some new inventions. Finally;  Bangladeshi scientist named Dr. Mubarak Ahmad Khan demand that he has invented such bags which made from jute.

Everybody knows about Jute fiber which is also known as Golden fiber. Jute fibers are silky, lustrous and golden brown in color. It has strength, low cost, durability and versatility. Sonali Bag is used where low cost is important than durability and it is called Golden fiber.

Scientists have conducted researches for long to invent an effective alternative to the harmful polythene. But they do not find any way. The new jute-made bag used as handy as poly bag, it is supposed to have a huge potential for successfully ending the use polythene in the country and save the environment of Bangladesh along with world environment.

You may like to know about Revolution of textile by banana fiber

History:

Dr. Mubarak Ahmad Khan

Dr. Mubarak Ahmad Khan

Dr. Mubarak Ahmad Khan has invented the ‘Sonali bag’. He has successfully developed the low-cost bio-degradable sheet from modified jute cellulose. Mechanical properties of polyethylene sheet is lower than the developed sheet. The product shows complete bio-Degradability within 4-6 months of soil burial. It will be degraded in water by around 8 hours.

 

Chemical composition:-

Cellulose: 65.2%

Hemi-cellulose: 22.2 %

Lignin: 12.5 %

Water soluble matter: 1.5 %

Fat and wax: 0.6 %

Advantages:

  1. It is biodegradable so Environment won’t be polluted by this product.
  2. The production of Jute in Bangladesh is more but its uses are not enough than its production. So that it can get much positive feedback from user.
  3. Because of being transparent its look like also polyethylene and attractive.
  4. It has more strength than polyethylene so it can carry much load.
  5. Because of made from jute fiber, after bulk production its cost would be cheap.

This article was guest post by Riad Badhon. You may get him by this mail id: riad19111998@gmail.com 

What do you think about this new invention and about his sonali bag please write a comment blew.

How to look for flame retardant fabrics suppliers

How to look for Flame Retardant Fabrics Suppliers

It is all very well to have done the work hazard assessment and analysis. Having determined the right level of protection for the employees at different levels of organization. But the next step that is extremely crucial in determining a safe and wise investment. A smooth working relationship is to find a reliable FR fabric manufacturer and supplier that understands your protection requirements. This is where you have to be careful. Because there are several factors that come into play for making the right choice. But if you keep your “essentials” checklist close at hand and make your evaluations of a supplier based on a realistic practical approach. You will be able to make a sound decision.

How to look for flame retardant fabrics suppliers

There are many ways. some or all of which can be employed for finding the right FR Fabric manufacturer and supplier for you.

First Things First

Before you embark on that search. It is important to keep your focus majorly for a supplier that is a vertical manufacturer and incorporates holistic approach. If your supplier is also your FR fabric manufacturer. This will ensure for very important things:

  1. Your supplier will have a first-hand product knowledge for their offering, and understanding for the client requirements
  2. Your supplier can do custom products for your organizational requirements given they offer such as option
  3. You can be sure of a steady supply of product-quality
  4. You can potentially find a long-term relationship with your supplier which is of great significance for any organization

Online Marketplace

You can find hundreds of suppliers at online market places such as Global Sources or Ali Baba. A look through these market-places will not essentially find you THE supplier for you but what it will do is get you a feel of the market, the range of products as well as the range of supply programs available in the market. This will initialize a process for you. By visiting the websites of the suppliers you like and communicating with them, you will be able to review their product range as well as determine their understanding of industry requirements, respectively. This process will help you create your own supplier ranking.

Public and Private FR Safety Organizations

Local and international public and private safety organizations are very reliable sources for acquiring background information about flame retardant fabric manufacturers and suppliers. They often have publications that inform about top industry traders as well as up-to-date and state-of-the-art products from various suppliers. Reaching out to employee safety organizations and authorities can often save you a lot of valuable time and efforts.

How to look for Flame Retardant Fabrics Suppliers

How to look for Flame Retardant Fabrics Suppliers

Trade Exhibitions

Trade exhibitions are hands-down the best place to connect with FR manufacturers and suppliers. There is no other place where you can learn as much about your potential supplier. Trade shows and exhibitions benefit you on a multitude of levels as they bring together the cream of the marketplace under one roof for you and provide you the opportunity to review the best FR products in the market, network with the manufacturers and suppliers, and exchange valuable industry insights.

You can gain in-depth knowledge about what goes into the making of a quality FR product from the use of flame retardants variety such as halogen-free, phosphorus, abominated, nitrogen-based, chlorinated, inorganic flame retardants and more, to flame retardant materials – for example, inherent and treated flame resistant or retardant fibers, FR engineering plastics, retardant composite materials, retardant modified plastics, flame retardant polymeric materials, flame retardant foam, retardant elastomer etc. – to finished flame resistant or retardant fabrics.

Trade shows afford you the unparalleled chance to build more of an international quality platform and connect with the industry chain of high quality resources by exploring global markets and evaluate business opportunities for superior and innovative products.

Samples and Product Testing

Once you have established who your potential FR suppliers are, the next important step is to request product samples for testing and final evaluations. With all the knowledge and assessments, real valuations come from actually trying out the flame retardant clothing in the original work environment. Not only will it give you the genuine performance merits for your chosen product against the physical workplace conditions, you will also be able to achieve employee feedback on fabric comfort and functionality. These are the factors that will govern your final choice for a flame retardant fabric or garment supplier based on objective and concrete product evaluation.

Evaluating Expertise of a FR Fabric Supplier

While you set about assessing the expertise of your flame retardant fabric or clothing supplier, it is critical to know how to make that evaluation. Given below is a checklist to make your prior evaluations of a supplier.

Compliance with Industry Standards –While every country has their own set of local industry standards, there are some worldwide compliance standards that will help you set your initial expectations about the product quality and performance from any supplier. These international standards are OSHA, NFPA, ASTM and ISO.

Business years –Determining how long a supplier has been in industry business and how much they have grown over the years, will give you an idea about their product expertise.

Current clientage and Retention Level –This can be a major determinant in forming your final decision, knowing who the current clients of a supplier are, what kind of industries they operate in, and how long they have been in business with that particular supplier. If you have common grounds with most of the clients then you know that your supplier knows your protection requirements and in that sense, they have a greater overall value for you.

Consultancy –An authentic FR fabric supplier should be able to give you proper consultancy and professional technical assistance about the connection between the hazards your employees face on daily basis as well as potential higher risks involved and the flame retardant protection they would offer specific to your situation. This would mean they have an in-depth and up-to-date industry knowledge and they know their trade well.

Product Variety –The range of different products offered by a supplier not only implies their industry knowledge, it also shows their interest and passion for innovative products and industry adaptation.

Vertical Manufacturing –Vertical manufacturing signifies the chain of value-added processes that a product goes through at different levels of production and it is a way to ensure seamless supply and sturdy quality of a particular FR product.

Custom Programs –Custom programs are great for any organization. Any suppliers offering custom products and programs recognize that and thus offer many options to suit their clients’ individual requirements such as protection level, comfort level, preferred blends and weaves, style of clothing, budget limitations etc.

After-sales service –This is another great contributing factor to knowing your supplier has serious expertise when they offer robust after-sales service and management. This indicates that they would like to continue to be in touch with you throughout your business relationship with them, that they care about their clients and they are fire-sure of their product quality to know they can handle an odds complaint that may be reported.

Comparing Programs offered by FR Fabric Suppliers

Having done all of the above, the elements that will seal the deal with a supplier for you are how suited they are to your particular situation and how comfortable your business relationship is going to be with them. This can be gauged from the following factors:

Product vs Customer Centric Approach –It is important to see if the supplier offers custom products or programs that are suited to your particular situation and that how willing they are to work with on-going changes and product adaptations. A product centric supplier would usually go with their own pace of industry adaptation whereas a customer centric supplier would incorporate your feedback and your company philosophy into product improvements in order to form a better working relationship and rapport with the client.

Budgetary Requirements –A good supplier will also understand your budget limitations and work with you to achieve maximum value for your budget. They would recognize that you are making a long-term investment with them and do everything within the scope of their business to offer you the best quality for your bucks.

Care and Maintenance –Laundry and pick-and-drop services can be of huge importance in many industries especially where work has to be carried out in remote locations with limited on site facilities as in mining. In such cases, maintenance and delivery services become a mandatory requirement for a client and add to a supplier’s overall value for them.

End note

It may be a lot of work to select your flame resistant or flame retardant fabric supplier but once you have found the supplier that have the right chemistry with you, it would be worth the effort. At the end of the day, you want a supplier you can form a long-term relationship with and in order to do that you would want to check most or ideally all of the expectations on your ‘must-have’ list.

This is a guest post & Written by Mr Daletec from Norway. you may get him by this E-mail: info@daletec.com

Ultrasonic in wet processing technology

Ultrasonic in wet processing technology

Textile wet processing get the challenges of reduce environment pollution to save the green world. This is so important to reduce usages of water chemical and dyes in wet processing. Wet processing is most of important department in textile which is plays a vital role to makes color and various textile process. Ultrasonic makes the wet processing easy and better than conventional system in a few selected methods. Let’s discuss the process of ultrasonic.

Meaning of ultrasonic (Ultrasound)

Ultrasonic made from two different words, ultra mean beyond and sonic mean sound. Ultrasonic defined the sound which limit is more than human limitations.  Ultrasonic is a sound waves which frequencies are above the limitation of human audibility. More than hearing ability (>20 KHz) are called ultrasonic.

The human ear can respond to minute pressure variations in the air if they are in the audible frequency range, roughly 20 Hz – 20 kHz. It is capable of detecting pressure variations of less than one billionth of atmospheric pressure.

Sound Classification

  • 1-20 Hz – Infrasound
  • 20 Hz-20 KHz – Acoustic (low Base Notes)
  • 20 KHz-2 MHz – Animals and chemistry, medical and destructive (Ultrasound).
  • 2 MHz-200 MHz – Diagnostic and NDE

Production of ultrasonic.

Ultrasonic can be produced by following methods

  • Piezo-electric generator
  • Magneto-striction generator

Advantage of ultrasonic in textile wet processing.

  • Increasing material swelling properties in water.
  • Reducing glass transition temperature of the fiber or cloth.
  • Increasing fiber and dye bath partition co-efficiency. Enhancing transport of the dye to the fiber surface by reducing the boundary layer thickness.
  • Saving energy.
  • Breaking of micelles and high molecular weight aggregation into uniform dispersion in the dye bath.
  • Reduction the consumption of chemical and dyes.
  • Reduction of processing time.
  • Improvement of in quality.
  • Easier process control.
  • No hazard effect during process running.
  • Reducing the pollution load on effluent water.
  • Saving in energy.
  • Low production cost and makes more profit.

Ultrasonic in textile industry

This is the most effective process in textile wet processing which is can be divided in to two main category.

  • Utilization in auxiliary process
    • Sizing process
    • Emulsion preparation
  • The modification of textile wet processing.
    • Desizing processing
    • Scouring and bleaching
    • Enzymatic treatment
    • Dyeing
      • Dispersion
      • Degassing
      • Diffusion
    • Finishing
    • Washing
    • Cleaning or washing action
    • Advantages
      • Deeper and quicker cleaning effect
      • Low energy expense
      • Reduced water expenses.
      • Reduced detergent and other accessories expense.
      • It does not damage the fiber.

Ultrasonic is a different way to increase wet processing procedure and let it be so effective. Though this is a process of sound weave but it is reduce the cost of goods and increase profit.

References

The Indian Textile Journal

Types of wet processing

Types of wet processing

Wet processing obeys an important duty to do in textile industry. Wet processing classified in three divisions in a short description. Because there are multiple divisions on those points are given below.

Types of wet processing

  1. Pr-treatment

Pr-treatment means preparation process. Before taking any necessary and important process like dying on a fiber or yarn has to do some preparation process called per-treatment. Pr-treatment makes the material as it can color as much as easy way. Basically this process used acid, salt, oxidizing agent, reducing agent, enzyme, wetting agents and many more. Selection of wet processing elements and temperature are decided by expert engineers according to the machinery are used in dying or wet processing floor.

 

  1. Dyeing and printing
    • Dying

Dying is a process where fiber, yarn or fabrics are colored by water and dyestuff is called dyeing. All this dying process done by penetration technique as it can spread all over the surface of the raw material. The dye can be different and change by the properties and category of that fabric is used to. The application of dyeing is depend on hue, tone, brilliancy, fastness, affinity, solubility and many more properties. Dye is a colored material which is built by chromophore and auxochrome group.

Basically we get some dyestuff in market.

  • Direct Dyes
  • Basic Dyes
  • Acid Dyes
  • Sulpher Dyes
  • Reactive Dyes
  • Vat Dyes
  • Azoic Dyes
  • Disperse Dye

 

    • Printing

Printing technique let us create custom design with different color on a fabrics land. In a single word “Printing means make a design with different color and shape on a fabric as it mention some think as people can accept it”. There are few printing technique are used to complete printing process. Following style are given below.

  • Direct Style
  • Dyed Style
  • Resist Style
  • Discharge Style
  1. Finishing

After complete bleaching dying and printing one step is left to get the final product that is finishing. Generally the type and quality of finishing is depends on buyer, customer or present market status. Actually the aim of finishing is increasing the fineness and comfort ability. Sometime finishing also depend on the purpose of the fabric are used to.

Generally two ways to finishing the fabric

  • Mechanical Finishing

Calendaring, Sanforization, Embossing, is the example of mechanical finishing.

  • Chemical Finishing

Merchandising, water proofing, fire proofing, is the example of chemical finishing.

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