Experiment No: 01Experiment Name: Production of different type of stitches.

Introduction: Stitch is the unit of seam made by three principles interloping intralooping, interlacing to join two plies of fabric.

Types of stitches: All kind of stitches are classified into 6 classes.

1. Stitch class -100 (chain stitch) In this stitch- one loop passing through the another loop of same thread. Security of this seam is poor/not satisfactory It can produce easily and high speed using one needle Only one needle thread is used for making this stitch Uses temporary purposes which can easily pick-up It is also used blind stitch purpose If one unit is break then whole stitch is open

Uses: Hemming, button attaching, button young, gathering and temporary positioning of garment component and purpose.

2. Stitch class-200 (hand stitch) Stitch under this class are also produced with single thread by the use of

special type of sewing m/c Stitch class-200 cannot be produced for longer length sewing Uses for stitch costly garment

3. Stitch class- 300 (Lock stitch) It require two types of sewing thread Both side are same It is difficult to pick up Less extensibility More compact Yarn consumption are comparatively less Stitch under this class is naturally secured It is widely uses in garments factory

4 .Stitch class -400 (multi thread chain stitch) One or more thread is used One group is called upper thread and another group is called lopper thread ( under

thread) Security of this stitch is higher than lockstitch about 30% Higher production than lockstitch due to use large package This type of stitch are use for making knitted garments

5. Stitch class -500 (over edge chain stitch) It require more than two threads One group is called upper thread another group is called looper thread Security is higher than lock stitch about 30% It has good preventing power and edge production It is used for making knitted garments It is also used decorative purpose It is only used in the edge of the fabric

6. Stitch class- 600 (covering chain stitch and flat) Three or more sewing thread are used to make this stitch Three group of sewing thread are used – Needle thread , Lopper thread, Covering

thread Security is good Sewing thread consumption is very high This type of stitch are used to join side by side of fabric without increasing

thickness This type of stitch is used for sewing under wear for attaching lace braid, elastic,

etc.

Conclusion:All the stitches are used for producing different kind of seam. As student of textile engineer we have to know about all the stitches and have to know what kind of stitches are required to sewing what kind of fabric.By this experiment, we have learned many of things. This knowledge helps us in our future life.

Experiment No: 02Experiment Name: Production of different types of seam.

Introduction: Seam: Seam is the combination of stitch which make line to join two ply of fabric used as functional purpose sometime used as decorative purpose

Type of seam: Arrangement of fabric ends of the seam line is called seam type. They are classified into following types

1. Seam class- 1 : super imposed seam2. Seam class- 2 : Lapped seam3. Seam class- 3 : Bound seam4. Seam class- 4 : Flat seam5. Seam class- 5 : Decorative seam6. Seam class- 6 : Edge neatening

1. Seam class- 1: super imposed seam

Seam is achieved by two or more separate pieces of fabric sewing together. Host commonly used The fabric ends are in same direction The most basic super imposed seam is ssa It has over 50 variations This class of seam can be sewn a variety of m/c e.g. Lock stitch , or over lock m/c Use : Mostly used inside seam like as shirt and pants

2. Seam class- 2: Lapped seam This type of seam is achieved with two or more piece of fabric over lapping each

other Two seam ends of the fabric are is opposite direction Mostly two needle chain stitch m/c is used

Seam under this class is very strong Uses: Inside seam of jeans and dress shirts etc.

3. Seam class- 3: Bound seam A bound seam is one piece of fabric encompassing the raw edge of another piece of

fabric. The purpose of bound seam is to finish an edge of garment. Some time used as decorative purpose The binder fabric may be different colors There are 18 variation of bound seam Uses: neckline of a T-shirt , Yoke joint in the shirt waist band , under wire .

4. Seam class- 4: Flat seam Flat seam are constructed by having two pieces of fabric meet precisely at their edge. Seam thickness is comparatively less Zigzag stitch may be produced Edge should be cleaned before sewing to avoid fraying Uses: Intensively used in under garments in knitwear

5. Seam class- 5: Decorative seam

This type of seam is made by making one or more adjacent stitch lines in one or more layer of fabric

Multi needle sewing m/c in used Seam under this class are produced only for decorative purpose Uses: Use in pant or other dresses

6. Seam class- 6: Edge neatening Seam under this class are produced in such a way so that the fabric ends from cut area

cannot come out during m/c It can be made by overlook m/c Extensively used Used: Mostly used knitted garments and hemming

Conclusion:By this experiment, we have learned about different type of seam and their uses. This knowledge help us in our future job in life.

Experiment No: 03Experiment Name: Making a pattern of front and back part, waist band, pocket facing, fly piece, pocket bag of a pant.

Introduction: Pattern making is one of the important sections in the garments industry. Before production pattern is made by the various measurement or standard body measurement. Pattern making is very important because proper pattern making ensured to follow bulk production. During pattern making, consider some parameters like accuracy of measurement, use less space, selection of batch according to shade, numbering etc.

Principle of pattern making for trouser: The measurements taken for making pattern are-

Seat 90cm Waist 70cm Body raise 26.8cm Inside leg measurement 72cm Trouser bottom width 23.5cm Waist band depth 4cm

Front & back part

From 0 point left side, right side and upper side at 90º angle three straight lines are drawn.body rise +1 –waist band depth =26.8+1-4=23.8cmThen from the point 1 the line is extended both side perpendicularly. 1-2, Inside leg measurement =72cmline is expanded both side perpendicularly. 2-3, inside seam length /2+5 =41cm. 1-4,1/4(body rise measurement ) from point 4 a line is expanded both side perpendicular to 0-1 line. 1-5, 1/12 (seat)+1.5cm from point 5 a perpendicular line is drawn on the line of 1-5, inside the point 6 and 7. 6-8, 1/4(seat measurement )+2cm 5-9,1/16, (seat measurement )+0.5cm 7-10,1cm A curve drawn according to the fig. the point 9, 6 and 10. 10-11, ¼ waist +2.5cm 2-12, Bottom width*1/2 2-13, Bottom width*1/2 5-16,(1-5), then from point 16 a perpendicular line 1-16 drawn which indicate 17 and 18 point . 19 mid point of 16 to 18.

18-20, 2cm 20-21,1cm 9-22,1/2 (5+0.9)+0.5cm 22-23, 0.5cm .A curve is drawn from the point 23,19 &21 21-24,1/4(waist)+4.5cm 25, Mid point of 21 and 24. from point 25left side 1.25 and bottom side 12 cm. 17-26,1/4(seat)+3cm 12-27, 2cm 13-28, 2cm 14-29, 2cm 15-30, 2cmThen side seam is drawn from the point 24,26,29,27.

Pocket bag:A-B =5cmA-F=17cmF-E=32cmE-D=17cmB-C=19cmThen the pocket bag is drawn according to the fig. seam allowance is added.

Pocket facing:Length =(B-C)+2cm Width =6cm

Fly piece:

Length = 24cm Width = 5cmThen the seam allowance is added.

Waistband making:

G-H =4cmG-I =45+0.5cmH-K =0.5cmI-L =4cm

Conclusion: Thus the pattern of front and back part of a trouser is prepared .By this experiment we have learn how to make front and back part of a trouser knowledge is very essential for every textile eng. This knowledge helps us in our future.

Pock

et fa

cing

Fly

piec

eF B

C

E Pocket bag

Waist band

Experiment No: 04Experiment Name: Study of thread path main adjustment point of different industrial overlock stitch sewing machine.

Introduction: The m/c by which overlock stitch is produced is known as industria overlock stitch machine overlock stitch machine is used for sewing different type of garment. The machine is used for sewing both woven and knitted fabrics

Specification of the m/c:M/c name : industrial overlock sewing m/cBrand name : YAMATAModel : FY2100-4Group : Chain stitch SPM : 6500-8500Needle name : DC*1Needle size : 9,11,14,16,18,20,21SPI/TPI : 16/18/21inchSeam class : super imposedStitch class :500

Needle thread

Creel

Tensioner post box

Needle eye

Feed dog

Throat plate (outside)

Conclusion:

From this experiment, we known a lot of knowledge about overlock stitch machine which will helpful for us in our future job life.Experiment No: 05Experiment Name: Study of thread path main adjustment point of different industrial chain stitch sewing machine and production sample.Introduction:The m/c by which chain stitch is produced is known as industrial chain stitch machine chain stitch machine is used for sewing different type of garment. The machine is used for sewing both woven and knitted fabricsFeatures of chain stitch m/c:

- This m/c have one or more needles - Some m/c may have automatic thread trimmer- Different type of feed mechanism can be used - Stitch length generally 1.5-4.5mm- Used for sewing both woven and knitted fabric

Classification of the m/c:1. Stitch type -1000 (single thread): 1 needle , 1 lopper chain stitch, over lock m/c2. Stitch class- 4000 (multithread chain stitch): 2 needle, 2 lopper chain stitch, over lock

m/c.

Specification of the m/c:M/c name : Multithread chain stitch double needle chain stitch m/cBrand name : YAMATAModel : FY0058AGroup : Chain stitchSPM : 1800-6500Needle name : TV*5Needle size : 9,11,14,16,18,20,21SPI/TPI : 8inchSeam class : Lapped seam/ super imposedStitch class : 4000

3. Needle thread

Creel

Tensioner post box

Needle eye

Feed dog

Throat plate (outside)

Conclusion:

From this experiment, we known a lot of knowledge about chain stitch Chain stitch machine which will helpful for us in our future job life.