Woven fabric manufacturing
The
process of manufacturing woven fabric requires a loom. Longitudinal threads are
known as warp and crossway threads are known as weft. The warp that needs to be
strong should be presented to weave on a warp beam. The loom passes the loom in
a shuttle that carries the yarn on a pirn. These pirns are changed automatically
by the loom. Thus the yarn needs to be wrapped with a beam and in the pirn
before weaving begins.
Winding process
The
composition of large yarn packages can be unwinded with ease during the
next process. Winding is the most necessary process in both yarn production and
fabric production. The main purpose of the winding is to create suitable
packages for both woven and knitted fabric production. Such as-
A.
To transfer yarn from one package to another suitable package, it can be easily
used for the weaving process.
B.
To eliminate yarn defects like hairiness, naps, slabs, and foreign subjects.
C.
To clean the yarn
D.
To increase the quality of yarn
E.
Get a suitable package.
F.
To store the yarn.
Warping process
The warping process is intermediate between winding and sizing processes. This
creates a warper beam that is joined together as a single loom beam in the next
process of sizing. A warp beam can end about 500-1000 warps. Bobbin racks are
set up to hold the thread while turning it over a weaver's warp bar. Since the
thread is good, often three of them can be combined to get the desired thread
count.
Sizing process
Sizing
is the process of using an adhesive coating on the surface of the yarn. It is
mainly applied to improve the weaving ability of yarn to resist the action of
weaving i.e. absorption, abrasion, tension, and flexibility. It maintains good
fabric quality by increasing hairiness, weakness, and yarn, reducing yarn
absorption. Other features of sizing include changes in various physical
features. It is applied to the fiber surface by different processes and
different recipes as per requirements. Size elements- 1. Starch, 2. Binder, 3.
Softener. 4. Anti-septic agent. 5. Anti-static agent.
Drawing-in process
The
process of drawing each end of the warp separately through the straw dents and
the eyes of the healds in the order indicated by the draft. The drawing-in process comes just after the weaver beam is ready. Weaving beams are obtained
by departmental warping or sizing. The drawing-in process basically consists of
two processes. The first procedure is called drafting and the second procedure
is called denting. This is mostly done manually but in large-scale textile
industries, automatic drawing machines are used, where more productivity is
required. If drop cables with utility closed D are used, the ends are drawn
through the drop wire D before healing the eyes. The drawing process is used to
apply new fabric designs to the loom. When the fabric design is regularly
repeated, a warp tying (knitting) process is applied to change a loom beam. The
binding process is done manually or with the help of a knotting machine.
A.
Draft: According to the draft (sequence of the drafting ends) the processing of
the ends through the eye of the held wire or the corner of the eye is called a draft. This work is done by two people when the draft is executed manually. The
person who selects the ends and presents them for drawing is called a richer.
The person who draws the ends through the eyes of the healing wire with the help of a drawing hook is called a drawer.
B.
Denting: When the end draft is finished, these ends go through the hole in the
reed. We can say that "according to the denting order of the woven fabric,
denting is the processing of the ends through the holes in the reed". It
can be performed by a single person or bi-person. In the case of two persons, one
person selects the edge and presents it to the other person who passes this
ends through the groove of the tube.
Pirning
The
pirn winding frame was used to transfer the left foot from the yarn cheese to
the pirns that fit the shuttle.
Weaving process
Weaving
is a process of textile production in which two sets of two yarns or threads
are set. Other methods interlaced at right angles to make a fabric or cloth are
knittings, crocheting, felting, and braiding or plaiting. Longitudinal threads
are called the warp and lateral threads are weft or filling. These threads affect
the properties of the fabric in the inter-woven method. The fabric is usually
woven into a loom, a device that holds the warp threads in place while filling
the threads. A fabric band that meets this definition of fabric can also be
made using other methods, including tablet weaving, backstrap weaving, or other
techniques without weaving. The way the warp and the filling thread come
together is called weaving. Most of the woven products are made in one of three
basic looms: plain wave, satin weave, or towel. The woven fabric can be simple
(in one color or in a simple pattern) or can be woven into a decorative or
artistic design. The initial movement of the loom is also said to weave as a repetition of these
three actions.
A.
Shading: where warp threads (edges) can be separated by raising or lowering the
held frames (handles) to create a clean space where the pick can go.
B.
Picking: Where the loom or pick is hand operated across the loom, an air-jet, a
rapper, or a shuttle.
C.
Beat-up or beating: where the groove pushes the weft against the fall of the
cloth. The
Lancashire loom was the first semi-automatic loom. Jacquard looms and dobby
looms have sophisticated fountain systems. These can be individual looms or plain looms. A Northrop loom was fully automated and was mass-produced in the
mid-1909s and 1900s. Modern looms run fast and do not use any shuttles: there
are air-jet looms, water jet looms and rapier looms.
0 Comments