2. Submitted By
Yousuf Ali
103-23-2102
Md. Nasir Uddin
103-23-2207
Md. Abu Owaheduzzaman
093-23-1785
3. According to Textile Terms and Definition ‘Denim is
traditionally a 3/1 warp face twill fabric made from
yarn dyed warp and un-dyed weft yarn’
3/1 RHT 3/1 LHT
4. The word ‘denim’ probably came from the name of
France, “serge de nimes” – serge (a kind of
material/fabric) from Nimes (a town in France) at 17th
century.
Leob Strauss started a wholesale business of denim at
the first of 18th century in America by the name of
Levi.
Cowboys – who often wore denim in the movies –
became very popular at around 1930 which lead to an
increased interest in the rugged trousers.
5. Fewer jeans were made during the World War 2 at 1943
for American soldiers. After the war, rival companies,
like Wrangler and Lee, began to compete with Levi’s
for a share of the international market.
Denim became very popular with young people in the
1950′s. Some schools in the US went so far as to ban
students from wearing denim at that time.
Manufacturers started to make different styles of
denim to match the 1960′s fashions.
Denim become fashionable cloth at around 1990’s.
And now denim is the most usable cloth for men and
women for all ages.
6. Slasher Denim: Dyeing and sizing are done in form of
sheet/ slasher simultaneously and that is why the
process is also called sheet dyeing and the denim is
sheet denim.
Rope Denim: Warping and dyeing are done in the form
of rope and dyeing sizing is done separately.
7. Direct
warping
Creeling
Pre-wetting
Cold
Wash
Cold
Wash
Dyeing(6
bath)
Cold
Wash
Hot
Wash
Hot
Wash
Cold
Wash
Drying
Sizing
11. 100% cotton or polyester blend yarn is used where
count range is 7OE to 40OE for slasher and up to 20OE
for rope.
Steel for zipper, snaps and buttons.
Leather, plastic for level.
12. Indigo vat dye: it is natural organic dye achieved
from plant. But now several thousand tons of indigo
produced each year — is synthetic.
13. Sulphur Dye: These dyes are so called because they
contain sulphur atoms in their molecules.
14. Criteria
Required floor space
Man power
Count
Comparison
Floor space is
comparatively
higher for rope
denim production
15. Criteria
Required floor space
Man power
Count
Comparison
Less man power
required for
slasher denim
production.
16. Criteria
Required floor space
Man power
Count
Comparison
Higher count is
used for slasher
denim.
17. Criteria
Lapper tendency
Dye bath capacity
Shade variation.
Comparison
Lapper tendency
is higher in rope
dyeing than
slasher dyeing.
18. Criteria
Lapper tendency
Dye bath capacity
Shade variation.
Comparison
Dye bath capacity
of slasher is lower
than rope dyeing
machine .
20. Criteria
Production
breakage rate
Wastage
Comparison
Production of
rope denim is
about 50% higher
than slasher
denim.
21. Criteria
Production
Breakage rate
Wastage
Comparison
Breakage rate of
Slasher is higher
than rope
method.
22. Criteria
Production
breakage rate
Wastage
Comparison
Wastage of
Slasher is higher
than rope
method.
23. Criteria
Production of Stripe
fabric
LCB process
warping.
Comparison
Stripe fabric can
be produced only
by rope method.
Not possible for
slasher.
24. Criteria
Production of Stripe
fabric
LCB process
warping.
Comparison
No need of LCB
process for slasher
method. For rope,
it is need to do re-beaming.
25. Criteria
Production of Stripe
fabric
LCB process
warping.
Comparison
Direct warping is
done for slasher
while, ball
warping for rope
method.
26. Denim type Weight (oz/sq.
yd)
Sheet denim
(price)
Rope
denim(price)
Regular 6-14 1.55 to 2.1 $ 1.75 to 2.25 $
Multi count 6-14 1.75 to 2.15 $ 1.9 to 2.35 $
Slub 6-14 1.8 to 2.25 $ 1.95 to 2.45 $
Stretch(regular) 10-12 2.15 to 2.65 $ 2.35 to 2.85 $
Stretch(multi
count)
10-12 2.40 to 2.80 $ 2.55 to 3.0 $
Stretch(slub) 10-12 2.40 to 2.90$ 2.60 to 3.10 $
27. Sales price of denim is about 1.5 $ to 3.0 $ per
oz.
Price of slasher denim per oz is about 1.5 $ to
2.9 $.
Rope denim price is about 1.75 $ to 3.0 $ per
oz.
Sales price of rope denim is 7 to 9.3% higher
than slasher denim.
28. Count: slasher-7 to 40 Ne. rope up to
20 Ne.
Breakage rate: higher at slasher.
Man power: higher at rope.
29. Lapper tendency: higher at rope.
Production rate: higher for rope.
Shade variation: frequently seen at
slasher.
Wastage: higher at slasher.
30. Stripe fabric: possible at rope method
for LCB.
Tensile strength: higher at rope denim.
Color fastness: better for rope denim.