Name: ………………………….
Roll Number: ……………………
Department of Textile Technology
Dr. B. R. Ambedkar National Institute of Technology Jalandhar
TTPC-304: Nonwoven Technology
Examination: Quiz-I
Duration: 15 min Marks: 05 Date: March 11, 2024
Note: All questions are compulsory.
1. Write the definition of nonwoven, as per ISO-9092.
2. For a wet-laid nonwoven sheet, the amount of fibrous content is made up of fibres (excluding
chemically digested vegetable fibres) is _______ and length to diameter ratio is
________________________________.
3. For, geotextile the most preferred choice of fibrous materials are based on
_________________________________________.
4. Nonwoven fabrics were prepared using polypropylene, polyester, and cellulose acetate through
needle punching following the same technique and sane specification, except weight. The weight
of these nonwoven fabrics will follow the order
_________________________________________________________.
5. The tensile strength of needle punched nonwoven fabric of same specifications prepared using
polypropylene, polyester, and flax fibres of same specifications will follow the order
_________________________________________________________.
Name: Roll Number:
Department of Textile Technology
Dr. B. R. Ambedkar National Institute of Technology Jalandhar
TTPC-304: Nonwoven Technology
Examination: Quiz-II
Duration: 15 min Marks: 05 Date: April 30, 2024
1. For the thermal bonding, the most appropriate choice of polymer/fibre to be used from (a)
Thermoplastic (b) Thermoset (c) Non-thermoplastic, and (d) Blend of thermoplastic and non-
thermoplastic, is/are.
Answer:
2. In respect to thermal bonding technique, arrange the fibres; polyester, nylon, polyethylene, and
polypropylene in the increasing order of temperature required during thermal bonding.
Answer:
3. Arrange the thermal, foam, and hydroentanglement bonding techniques as per the decreasing order
of energy requirement per kg of material.
Answer:
4. Keeping all the parameters constant, the softness level of nonwoven fabrics produced using binders
based on ethylene, butadiene, methyl acrylate and styrene will be in the order of.
Answer:
5. The synonyms used for hydroentanglement bonding process are:
a. b.
c. d.
Name: Roll Number:
Department of Textile Technology
Dr. B. R. Ambedkar National Institute of Technology Jalandhar
TTPC-304: Nonwoven Technology
Examination: Quiz-III
Duration: 15 min Marks: 05 Date: May 07, 2024
6. The chemical finishing of nonwovens may be most easily combined with following bonding
technique. (a) Needle punching (b) Hydroentanglement (c) chemical bonding (d) stitch bonding.
The correct choice(s) is/are.
Answer:
7. The finishing methods of nonwovens may fall into following categories.
Answer:
8. Calendaring, embossing, emerising, and microcreping fall under the
_________________________ type of finishing of nonwovens.
Answer:
9. Aqueous dispersions of _______________________________ containing pyrithione are effective
against bacteria, algae, yeast and fungi and can be applied to fabrics other than those composed of
polypropylene.
10. For water repellent finishes of nonwovens, the most common choice of finishing agents
____________________________________________.
