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PRESENTATION ON SEWING MACHINES
PRESENTED BY:-BHANUSHREE MALVIYA
DEBADIPTA GHOSHNITIKA SINGHRAHUL HELA
RAJKUMAR KOLI
DEPARTMENT OF FASHION MANAGEMENT STUDIESNATIONAL INSTITUTE OF FASHION TECHNOLOGY
KOLKATA
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Acknowledgement
We are highly indebted to our professorsI)Ms.Ritu Malhotra
for his guidance and constant supervision as well as for providing necessary information regarding the project & also for his support in completing the
project.
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Identify the sewing machines and the equipment needed for each of the processes of sewing.
Give the uses of the sewing machines.Apply how to use this sewing machine
in industry.
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OUTLINE OF THE PRESENTATION
TYPES OF SEWING MACHINES
FEATURES OF BASIC SEWING MACHINES
SEWING MACHINE
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SEWING MACHINEA sewing machine is a machine used to stitch fabric
and other materials together with thread.A sewing machine is a machine which does all the
stitches automatically, so it's easier and quicker than hand stitching.
A sewing machine is a textile machine used to stitch fabric, cards and other material together with thread.
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Features of Basic Sewing Machines 1. Basic sewing machines in garments industry are used for numerous applications.2. Generally available in three versions :
i. Sewing with light materials.ii. Sewing with medium materials.iii.Sewing with heavy materials.
3. Speed up to 6000 s.p.m with electronic controls for acceleration.4. Electronically controlled thread cutting, needle positioning, back tacking
mechanism through the foot pedal, foot lifting system available in this machines.5. Programmable sewing sequence via a micro processes for repetitive operation.6. A great variety of feed systems, attachments and apparatus available to make the
machine more versatile.
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Types of Sewing Machines . According to the operating system, there are two types ofsewing machines:
1. Manually operated sewing machines : Driven by physical energy. Used for domestic and tailoring purposes. Less production, but more laborious. Low cost.
2. Electrically operated or Industrial sewing machines : Usually driven by electric power. High productivity. Used in garments industry. Cost is high.
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Electrically operated/Industrial Sewing Machines At present there are used two types of electrically operated sewing machines in garments industry :
o Semi-automatic electrical sewing machines.o Computerized sewing machines.
Most common manufacturer of electrical/industrial sewing machines (semi-automatic) are given below:
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LOCKSTICH SEWING MACHINE
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No. of needle : generally 1 needle or 2 needles.
SPM : 1500 – 5500.
Stitch Length : 5 mm in Juki DDL 5500 Model.
Automatic thread cutting and bobbin winding.
Edge cutting system.
More secured sewing.
Most commonly used for sewing of woven garments.
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CHAIN STITCH SEWING MACHINE
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Two types : Single Chain Stitch and Double Chain Stitch.
No. of needle: One or more
No. of thread : One or more
SPM : 1800 – 6000
Stitch Length : 1.4 mm to 4.5 mm
Automatic thread trimmer.
Various types of feed mechanism is adjusted to the machine.Used for both woven and knitted fabrics, specially to sew jeans or denim wears.
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Over Lock/Over Edge Sewing Machine
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No. of needle: 1 or 2.
No. of threads : 2 - 5.
SPM : 6500 – 8500.
Stitch Length : 4mm (maximum) and it can be adjusted by push button.
Stretching : Maximum 1: 0.6 and Gathering : Maximum 1:4
Used for sewing both woven and knitted goods, but extensively used for knitted goods.
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Zigzag Lock Stitch Sewing Machine
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Special modification of lock stitch machine. No. of needle: 1 No. of threads : 2
SPM : 5500 Stitch Length: 2 to 2.5 mm
Stitch Width: 5 to 10 mm
Used in edge stitching or decorative top stitching
or to fit extra component to garments, such as elastic, tape, pipe etc.
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Flat Lock Sewing Machine
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No. of needle: up to 4
No. of threads : 4 to 9 SPM : 6000
Stitch Density: 8 to 16 per
inch
Thread consumption of this machine is very high. So
very expensive machine.
Used for knitted
garments. But it can be also
used for woven garments.
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Blind Stitch Sewing Machine
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No. of needle: 1 No. of threads : 1 or 2 SPM : 2500
Stitch Length : 3 to 8 mm
Stitches are not seen on the face
side of the fabric.
Curved needle is used.
Security is high for 2 thread blind stitch machine.
Very expensive.Widely used for hemming and
facing attaching.
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BUTTON HOLER MACHINE
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Stitch Group : Lock or Chain may be used.
For heavy fabric, hole is cut before
sewing.
For lighter fabric, hole is cut after
sewing.
Arrangement of stitch density
being increased or reduced.
To raise the stitch is called ‘Gimp’.
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BUTTON ATTACHMENT MACHINE
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Produces lock stitch, chain stitch
or hand stitch.
Button positioning can be
automatic.
Sewing is according to the
hole in button and may be cross or
parallel.
In fully automatic machines, button
feeding and positioning inside the button clamp is performed by a hopper and pipe
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BAR TACK MACHINE
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Cyclic machine of strong sewing in very short length.
After making tack stitch in short length (1-2cm), cover stitch (zigzag) is made on tack stitch and the no. of cover stitch.
Used for sewing of belt loops, closing the ends of button holes, for increasing strength at the ends of the pocket.
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COMPUTERIZED SEWING MACHINE
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Used for very fast and accurate sewing. Very expensive and require very efficient operator, so rarely used in our country. Some examples of mostly used computerized sewing machines are given below : Computer Controlled Cycle Machine with large Sewing Area. Cylinder Bed Machine with Automatic threads Trimming. 1-Needle, lock stitch unison feed machine with double capacity. 1-Needle, lock stitch portable Sewing machine with Automatic thread Trimmer. 2-Needle, 2/3/4 thread over lock sewing machine with built-in rolled hemming and
differential feed. Automatic Jeans pocket setter with new automatic bobbin winder/changer. 3-Needle, plain feed double loop seam machine with Tractor type presser foot. High speed, lockstitch, buttonhole machine.
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Brand Name of Some Popular Sewing Machine
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Maintenance of Sewing Machine The following maintenance points are to be considered carefully: Machine should be cleaned every day. Essential parts of the machine should be lubricated or oiled regularly. Needle should be adjusted carefully. Needle thread, bobbin thread or looped thread should be threaded correctly and their tension
should be adjusted. The pressure of pressure of pressure foot should be adjusted. Stitch density should be adjusted. Switching (on/off) should be proper. Machine should be handled according to instruction. The hand wheel should always be rotated towards the operator. Bobbin thread should be wound in uniform tension. During fabric feed and with drawl, the needle should be picked at the top most position and the
pressure foot is lifted. One-fifth portion of bobbin should always remain empty after winding thread.
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OVER LOCK
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COVER STITCH
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ZIGZAG STITCH
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http://www.sewingmachinereviewer.com/sewing-machine-parts.html http://www.quiltingassistant.com/sewingmachine.html. http://www.ideafinder.com/history/inventions/sewmachine.htm http://www.sewalot.com/sewing_machine_history.htm Sewing Machines From Past to Present: Barthelemy Thimonnier Clothing in the 19th Century: A Brief History of the Sewing Machine Elias Howe and the Sewing Machine Elias Howe Engines of our Ingenuity: The Sewing Machine International Sewing Machine Collector's Society Sewing History and Inventions Singer and Sewing Machine History Walter Hunt
DATE-10/05/2016
RESOURCE PAGE
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PRESENTER INFO
Name-Nitika singh Contact No-86973 55374 E-mail-nitisngh19@gmail
