8/20/2019 Lab 1 Experiment Yasir Ali
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Lab Experiment 01
Linear Velocity
To Determine the Linear velocity of fabric running through
the
padder.
Performance Obective!"
#pon !ucce!!ful completion of thi! experiment$ the !tudent %ill
be able to$
i. #nder!tand the ba!ic concept$ of mea!urement of linear
velocity of fabric in a
proce!!ing machine.
ii. Operate laboratory padding machine.iii. &e a%are of the
%or'ing principle of a padder.
(pparatu!"
Laboratory Padder$ Piece of %oven fabric of !peci)ed length and
!top%atch
Di!cu!!ion * Theory "
Velocity may be defned as the distance covered per unit time in
a particular direction.
Mathematically ,
V = s / t …..(1.1)
Where s is the displacement and t represent
time
Procedure * +ethod"
1. a!e a piece o" "abric o" specifed #en$th%. &'itch on the
paddin$ machine.. &et appropriate pressure o" suee*in$
rollers.+. eed one end o" the "abric to the nip o" suee*in$
rollers.-. &'itch on the stop'atch, as "abric start movin$
throu$h nip o" the rollers.. &'itch o the stop'atch as soon as
second end o" the "abric comes out "rom nip o" the rollers.0. ote
the time ta!en by the "abric to pass throu$h the suee*in$
rollers.2. 3epeat the same "or fve times and the time each
time.
4. 5alculate the velocity by puttin$ the values o" len$th o"
"abric and time in euation 1.1..16. 5alculate the avera$e velocity
"rom fve readin$s.
7a$e 1 o" %
ame8 9asir :li ;han 3oll o. -6
8/20/2019 Lab 1 Experiment Yasir Ali
2/2
Lab Experiment 01
Linear Velocity,alculation"
Velocity = v = s/t
:vera$e Velocity = 'here n is number o" observation
Te!t -eport * -e!ult"
1. #en$th o" "abric passed throu$h "orm padder%. ime ta!en by
"abric. Velocity o" "abric+. :vera$e velocity o" "abric
?bservation
o.
#en$th o" "abric
(meter)
ime a!en
(second)
Velocity = v = s/t
(meter/second)1%+
- :vera$e Velocity =
-evie% ue!tion"
1. What is the "unction o" suee*in$ rollers@
:ns. suee*in$ rollers are used "or press 1-. abric and suee*e
out or eAtract out. he auAiliaries li!e
'ater etc.
%. 5alculate the diameter o" suee*in$ rollers. (Bint
ine data "rom practical done@
:ns. &ur"ace speed = π dN
> = s.s/ π N
/inal ,hec'li!t"
1. 5lean your apparatus and 'or!bench be"ore you leave.
%. ;eep the apparatus bac! to their proper places.
. &ubmit your ans'er to uestions and result be"ore the
neAt laboratory eAperiment
accordin$ to the time table.
7a$e % o" %
