Sunday 29 June 2014

Importance of geotextiles and geotextile fabric in present-industry


Each textile item applied under the soil is a geotextile fabric. The items are utilized for reinforcement of streets, embankments, ponds, pipelines, and related programs. Based upon on the necessary functionality, they are used in open-mesh versions, such as a woven or, hardly, warp-knitted construction, or with a closed fabric surface, such as a nonwoven. The fundamental geotextiles features include  corrosion handle; security; purification; armoring; drainage; and separation, or obstacle functionality.

Geotextiles with their made functions are virtually tailor-made based on application. Big necessities consist of tensile strength; permeability to air, fluids and/or light; mesh size fitted to use, such as filtration, sieve or separating; chemical, mechanical or thermal resisting; and durability.

Geotextile Fabrics : Most woven geotextiles are made of filament polyester (PET), polypropylene (PP), glass, basalt, aramid or carbon fibers; with the fiber preferred depending on the needed features, mostly tensile strength and a very lengthy products existence. Common end-use purposes are roads, levees and railroad embankments, amongst other applications. Nonwoven geotextiles, generally made of PP and PET, are mainly applied for barrier function end-uses such as filtering. In addition, nonwovens produced of natural geotextile fabrics, for instance, are appropriate for covering grass slopes. It is possible to integrate various kinds of seeds, such as grass, and the nonwoven shield will ultimately disintegrate as a green and natural surface grows on the construction.

Bast geotextile fabric fibers, with their non-consistent fiber characteristics, are beginning to be used in particular nonwoven items. The exact applies for re-used fibers. Presently, very few re-used fibers are used. Also, re-used fibers do not always own the uniform qualities needed to create an even product. When PET bottles are re-cycled in a means that makes uniform fibers, then recycled PET fibers can be prepared utilizing needle punch technology Coating elements play a very important part in enhancing geotextile fabric qualities and operations. Primary coating constituents employed contain polyvinyl chloride, bitumen, latex, plastisol, silicone and other related supplies.

Vital Sector : For each organization, the geotextiles sector is a vital market. Trützschler Nonwovens is capable to provide lines for man-made fiber generation and also calenders or bonding machines such as its Omega machine. The organization states lines currently shipped for geotextile fabric development have a development capability of more than 1,500 kilograms per hour and even at low fabric weights of 60 to 80 grams per square meter.

Dilo and Fleissner tell there is a crucial upswing for nonwovens in basic and geotextiles in particular. The benefit of non wovens as geotextile products is initially their large volume and cost-effective manufacturing. Another standard is their potential to stretch and set to bumpy areas. Of exceptional significance is the accomplished product's geotextile fabric thickness for efficient and economical road — or, progressively, harbor — developments. On the other hand, geotextiles, which need higher toughness, normally are made of woven fabrics. Dornier reports its weaving machines are specially acceptable for production of open-mesh fabrics for armoring all kinds of developments. Many levels of distinct developments can be mixed. Woven fabrics also require to be produced in a wide thickness. Generally, machines with a nominal thickness of 540 cm and larger are utilized, whilst the hauling devices for street development is usually created to own a 500-cm width.

Thursday 26 June 2014

Filtration Fabrics

Filtration Fabrics are those stuff with the help of those, filtration process is performed. On macro level it can be categorised in woven filtration fabric and non woven filtration fabric.
A-Non Woven Filtration Fabrics-
In filtration practice a non woven filtration fabrics can  be often described as a random fibrous web. In this type of filtration media sedimentation is accomplished either by mechanically or chemically. Typically non woven fabric manufacturers provide filtration fabric from the capability of 1 to 500 micron. Below rating of 10 to 15 micron , the filtration fabric is qualified to catch particles of finer micron ratings. The micron ranking depends significantly on the test procedure by which the producer rates the media and whether the rating is liquid or air. Because ratings are may be enormous from one maker to another. So user have to care when analyzing filtration fabrics of one maker to another. It might be of big variations. So it essential to ask the non woven manufacturer for a copy of the test procedure to check rate. In addition to the micron pour rating there are a number of other considerations including dust holding efficiency, flow rates and differential pressure data.

Characteristics of Non woven Filtration Fabrics-

Non woven filtration  fabrics are broadly known as sheet or web structures attached with each other by sediment ed fiber or filaments (and by perforating films) mechanically, thermally or chemically. The characteristics of non woven filtration fabrics  are flat, porous sheets that are produced directly from independent fibers or from molten plastic or plastic film. They are not made by weaving or knitting and they do not require changing the fibers to thread.

The filtration fabrics of this types are designed fabrics that may be of  a limited life. They are  single-used fabric or a very strong fabric. Non woven filtration fabrics present specific functions for instance absorbency, liquid repellency, resilience, stretch, softness, strength, flame retardancy, washability, cushioning, filtering, bacterial barrier and sterility. These features are often combined to create fabrics appropriate for specific jobs, while achieving a good balance between product use-life and expenditure. They can mimic the look, texture and strength of a woven fabric and can be as bulky as the thickest paddings. In combination with other raw materials they deliver a spectrum of solutions with numerous properties, and are used independently or as parts of apparel , home furnishings, health care, engineering, industrial and consumer products.

B- Woven Filtration Fabrics-
Woven typed Filtration Fabrics are made from two sets of yarns.
 One set of yarns runs as warp and another runs along the length of the fabric. The different set of yarns the weft is perpendicular to the warp. Woven fabrics are held simultaneously by weaving the warp and the fill yarns over and under each other.
The woven Filtration Fabrics are cloth produced by knitting. They expand only in the bias direction, unless the threads are elastic.

Characteristics of Woven Filtration Fabrics:-
Woven Fabrics do not stretch. It extend only axis sides. Woven Filtration fabrics are made of  fibers which run right at ninety degree angles to each other. Knitted fabrics have circles of fiber that allows the fabric to stretch. The level of expansion and routes are variables.  A knit may expand in one direction or it may expand in the two directions. This is an important aspect when considering fabric for a specific usage.
The narrator is a professional of Filtration Fabrics, and presently working in Amrit Filtration Equipments. Filtration Fabrics is a effective device for filtration process.

Tuesday 24 June 2014

Filter Bag

Filter bag is designed to perform optimum filtration. Filter bag is made of a variety of medias, which are  needle felt , mono filament and   multi-filament. Filter bag is effective in removing solid particles  from liquids . Filter bag offers an good solution to a lot of filtration problems. Filtration takes place as the liquid flows the inside to the filter bag to the outside. Needle felt filter bag employs reliable mechanisms of depth filtration and have a high dirt grasping ability. Mesh filter bag utilizes the well proven mechanism of surface filtration and are efficient in removing large solid crystals from the flow of liquid. Now a days filter bag is available in rating of 1,5,10,20,100 and 200 microns. As filtration  media polypropylene, polyester , nylon , HDPE and Nomex / Ryton are used. Now a days it is  available in different sizes, these are:
04” by 10”
04” by 17”
07” by 17”
07” by 32 “

Types of filter bags:

A- Mono filament Filter bag : Filter bag of this class is used for surface filtration. This bag is engineered with a mesh structure, available in several materials. This filter bag can be regarded to be reusable filter media. There is no risk of fiber or particle migration with this type of bag.

B- Needle felt Filter bag : Filter bag of this type is manufactured of an economical,disposable filter material. It is excellent for batch filtration.  The lack of any rigid structure makes them simple to use ,easy to compact and decreases the cost of waste. Filter bag of this class provide efficient protection upstream of more sophisticated filter units.

C- High Performance Filter bag : Filter bag of this category is designed for the filtration of liquid material. This Filter bag can be employed is mostly all the sectors of the industry, for any application where performance and efficiency is required.

Usage of Filter bag :

A- Automotive Systems
1. It is utilized in Phosphate filtration
2. It is utilized in E-coat paint filtration
3. It is applied in Spray water and additive filtration
4. It is utilized in paint filtration

B- Water Treatment/Processing

1. It is used in bottled water filtration systems
2. It is applied in process and cooling water filtration
3. It is employed in raw water processing

C- Medicine Industry

1. It is utilized in activated carbon, hormone , gelatin ,plasma protein filtration
2. It used in catalytic agent, activated material recycling
3. It is employed in liquid medicine filtration
4. It is applied in waste water filtration

C- Pertro Chemical-
1. It is utilized in process and cooling water filtration
2. It is used in Oil and fuel filtration
3. It is utilized in Solvent contamination filtration

D- Food and Beverage:-
1. It utilized in Edible oil,syrup filtration
2. It employed in wine and Liquor filtration
3. It is used in soft drink filtration
4. It is applied in fruit juice filtration

F- Chemical Industry-

1. It is used in adhesive filtration
2. It is utilized in ink filtration
3. It is applied in Bulk Chemical filtration
4. It is utilized in Resin filtration
5. It is also used in fine chemical filtration