1. Garima Goel
textile engineering
J.N Government Engineering college

2. The non woven fabric properties depends on the following particulars to an
great extent,
1) The choice of fibers.
2) Technology which determines how the fibers are to be arranged.
3) The bonding process and the bonding agents.
Fabric properties of nonwovens range from crisp to that soft-to-the-touch to
harsh, impossible-to- tear to extremely weak. This leads to a wide range of
end products such as filters, teabags, geotextiles, etc. some which are
durable and others Are disposable

3.  It is not necessary to use best fiber but required fiber
 Virtually all types of fibrous material can be used to make
nonwoven bonded fabric, the choice being dependent on:
1) The required profile of the fabric.
2) The cost / use ratio(cost effectiveness)
3) The demands of the further processing

6. The bonding agents are the glue as it binds the web firmly together to
give the non woven fabric. These agents largely determine the wear
properties of the non woven fabrics.
Fabrics made from a combination of fibers and bonding agents is
defined ass non woven bonded fabrics ( DIN61210- German Standards
Committee)

7.  Strength/stretch (resistance to pilling, tearing and
ripping)
 Elastic tenacity and bendability
 Handle and draping qualities
 Washing and dry cleaning fastness
 Resistance to chemicals
 Resistance to air and oxygen
 Flame resistance property
 Hydrophilic and hydrophobic properties

8.  Bonding Fibers are usually made from thermoplastic
polymers. The most important of the former kind are
polyvinyl alcohol (PVA), co-polyamide, polyolefin,
polyester and polyvinylchloride. Among the powders
and pastes made from them, those used are co-
polyamides, polyethylene and ethylene vinyl acetate
(EVA) copolymers.

9.  The construction of a nonwoven with suitable binders is to
achieve improved characteristics such as strength, softness,
adhesion, firmness, durability, stiffness, fire retardence,
hydrophilicity, hydrophobicity, anti-microbial properties,
organic compatibility, reduced surface tension, improved
dimensional stability and solvent, wash and acid resistance
 Strength
 Adhesion to Fibers
 Flexibility/handle
 Elastic Recovery
 Minimum film forming temperature
 Glass or brittle temperature
 Resistance to washing/ Drying cleaning
 Other special requirements

10. A binder is any material or substance that holds or draws other
materials together to form a cohesive whole mechanically, chemically,
or as an adhesive.

11.  The binders available are mainly classified according
to their chemical structures. There are three main
kinds of binders viz.
 Butadiene copolymers
 Acrylates
 Vinyl copolymers