Welcome Note
Welcome to
my course blog at DIU Blended Learning Center (BLC). This is Alamgir Hossain,
and I am your facilitator in this course. I am hopeful that you will find
various information and help to complete this course successfully. Yarn
Manufacturing I is the first course where you will learn how yarns are produced
from fibers and the different steps of yarn manufacturing techniques. The
course is designed based on practical knowledge of spinning mills where yarns
are manufactured. So this course will be very helpful to build your career in
the spinning sector as well as in textile sector.
Course Teacher Profile:
Alamgir Hossain
Designation: Senior Lecturer
Department of Textile
Engineering
Contact Number:
01922788272
Email:
alamgir588@daffodilvarsity.edu.bd
Profile link:
https://faculty.daffodilvarsity.edu.bd/profile/te/alamgir.html
Course Details:
Course
Name: Yarn Manufacturing I
Course Code: TE205
Level & Term: Level 2
& Term 1 ( Section: C1 & C2)
Credit Hour: 3.0 (Weekly
3 contact hours)
Course Description:
Short
Staple: Characteristics
of Fibre considered by a spinner, Flow chart for the production of carded and
combed yearns, Importance of mixing and blending.
Blow
Room: Principles
of Opening and Cleaning, Study of Blow Room Machines for Blending, Opening,
Cleaning and control of regularity of mass per unit length, Extraction and
control of waste, Settings for waste, Blow room lines for different purposes,
use of suitable sequences of machines, Production of scutcher laps, Advantages
and disadvantages of chute feeding to cards, Safety; Prevention of fires,
methods of extraction of metal objects, Main setting, Speeds, Production.
Carding: Principles and objects of
carding; Detailed study of the revolving flat card, Types and care of wire,
Stripping and Grinding, doffing mechanism. Extraction and control of waste and
dust, Can coiling, Speeds, Productions, Settings, Cleaning efficiency, Control
of nep and Fibre damage, Variation in sliver mass per unit length.
Draw Frame: Principles
of roller drafting; Drafting forces; Fibre control; Drafting wave and effect of
short fibres and fibres with hooked ends created in carding, Mechanical faults
causing periodic variation.
Minimum
theoretical variation, Effects of doubling and drafting Study of draw frame,
Drafting systems Stop mechanisms, Can coiling, Roller setting, Production,
Introduction to auto levelers.
Rationale: This course is specially designed to provide technical
knowledge and skills to cope up with the requirement of Machine Operation of
the Yarn Manufacturing Section of Textile Sector. The course will be
implemented to ensure at least 50% of total contact hours on
practical/hands on skills training or practice and 50%
trade/occupations related theory. It will cover fibre preparatory sections of
the ring spinning and jute spinning systems.
Course objectives:
By the end of the course it
is expected that the students will be able to
- · Gather knowledge about various types of yarn
and their applications.
- ·
Explain required fibre properties and fibre
selection technique for yarn manufacturing.
- ·
Define basic terminologies related to yarn
manufacturing.
- ·
Have understanding about mixing, blending and
layout plan for different fiber processing.
- ·
Have a clear concept about the working
procedures and principles involved in yarn manufacturing from Blow Room to Draw
frame section.
- ·
They also be capable to set the cotton carding
machine and solve different problem of carding machine including calculating
production in a given time.
- ·
Have the understanding about the wastages in
different stages of spinning.
- ·
The students also able to realize the basic
operations of long staple spinning like batching, batch selection, Emulsion
etc.
- ·
They also be capable to set the jute carding
machine and solve different problem of carding machine including calculating
production in a given time.