1) Plain single jersey is a basic weft knitted fabric where the front side has face loops forming a "V" shape and the back side has back loops forming semi-circles. 2) It is produced using a plain circular latch needle machine with one set of needles knitting at each feed to form a single loop per course. 3) Single jersey fabric is lightweight, comfortable, and inexpensive to produce, making it widely used for apparel and other applications. Variations can be made by modifying the knitting order.

1. Fabric Manufacturing
Engineering-I
Presentation
on
Plain single jersey
Presented
By
The group “MAYAKANON”
Group Members:
1.Musa(1521001) 3.Niloy(1521024) 5.Rajim(1521018)
2.Emon(1521019) 4.Mohammadullah(1521023)
Department of Textile Engineering.
Khulna University of Engineering & Technology(KUET)

2. Single Jersey Fabric
Introduction:
 Plain single jersey is one kind of weft knitted fabric.
knitting across the width of the fabric is called weft knitting.
 Single jersey is a plain single knit structure with face loops on
one side and back loops on other side.The structure is
produced when all the needles of a plain single circular
machine knit at each feed.The structure can be of technical
face or technical back.
 A weft knitted fabric has one side consisting only of face
stitches, and the opposite side consisting of back
stitches,then it is described as a plain knitted fabric.It is also
frequently referred to as a single jersey fabric (single fabric).

3. Contd…..
 Technical face of single jersey fabric is smooth, with the side limbs of
the needle loops having the appearance of columns of V’s in the
wales. These are useful as basic units of design when knitting with
different coloured yarns.
 On the technical back, the heads of the needle loops and the bases
of the sinker loops form columns of interlocking semi-circles,whose
appearance is sometimes emphasised by knitting alternate courses in
different coloured yarns.

4. Single
jersey
fabric

5. Characteristics of single jersey :
 Face side and back side are different.
 Curl of fabric occurs at edge.
 Wales are clearly visible on the face side of the fabric.
 Extensibility in widthwise is approximately twice than length.
 Unraveling of the fabric occurs from either side is possible.
 Thickness of fabric is approximately twice than diameter of yarn
used.
 There is only one series of knitted loop per course in the fabric.
 Single jersey can be un-roved.
 In plain un-roving can be prevented by binding off.

6. Features
 Comfortable fit in knitted fabrics, freedom of
movement shape retention, excellent drape ability and
crease recovery.
 Outstanding shape retention in knitwear.
 Good resistance to chemical.
 Simple manufacturing process and most economical
production.
 Technical face is smooth and ‘V’ shape will show the
wales.
 If yarn breaks, needle loops sussecively un mesh down
a wale and sinker loop un mesh up a wale. This
structure break down is called laddering.

7. Plain Circular Latch needle machine:
 Single jersey fabric is produced by the plain circular latch needle
machine.
 One set of latch needle is used.
 Latch needle, cylinder and sinker ring revolve through the
stationary knitting cam systems.
 Stationary yarn feeders are situated at regular intervals around
the circumference of the cylinder
 Yarn is supplied from cones, placed either on an integral
overhead bobbin stand or on a free standing creels through
tensioners, stop motions and guide eyes down to the yarn feeder
guides.

8. Plain Circular Latch needle machine:

9. Plain Circular Latch needle machine:
 The fabric, in tubular form, is drawn downwards from inside the
needle cylinder by tension rollers and is wound onto the fabric
batching roller of the winding- down frame.
 The winding down mechanism revolves in rack over with the
and fabric tube.
 As the sinker cam plate is mounted outside on the needle circle,
the centre of the cylinder is open and the machine is referred to
as an open top or sinker top machine.
 Approximately suitable count may be obtained by using formula-
 Cotton spun count, NeC = G2/18
 Worsted spun count, NeW = G2/15.

10. Different parts of Single jersey knitting
machine:
 Package carrier: To hold the yarn package.
 Yarn guide: To guide yarn definite path.
 Feeder in (signal lamp, magnet) for any problem.
 Latch needles: To form loops.
 Sinker: To open or close the latch of needle.
 Needle detector: To detect needle if there is no needle at any point.
 Fabric detector.
 Cam (Knit cam, Tuck cam, miss cam): To up and down the needles.
 VDQ pulley (Variable diameter pulley): To control fabric GSM.
 Take up roller: To receive the fabric.
 Batch roller: To wind the fabric.
 Needle: Latch needle: For loop formation.

11. Single Jersey Derivatives:
 The structural modifications are used to a very great extent in
designing plain-knit structures by modifying the order of
knitting.
 The plain knit structures can be modified with the following
alternatives.
- Knit loop and miss loop
- Knit loop and tuck loop
- Knit Loop, miss loop and tuck loop.

12. Plain Knit Derivatives:
 1. Single lacoste
 2. Double lacoste
 3. Single pique
 4.Polo pique/Double pique
 5.Two thread fleece
 6.Three thread fleece
 7.French terry etc
 8.Jacquard knits
 9.Knitted velour
 10.Plaited knits
 11. Pile knits

13. 13
Cross Miss Design:
• Cross miss is a miss-knit single jersey structure.
• So one set of needle is used to produce this structure.
• The repeat of the structure completes on two courses. Knitting sequence
for a repeat as follows:
- First course: Knit on all odd number needles and miss on all even
number needles.
- Second course: Miss on all odd number needles and knit on all even
number needles.
13

14. Birds Eye or Double Cross Miss Design:
> Birds eye is a knit-miss single jersey structure.
➢ So one set of needle is used to produce this structure.
➢ The repeat of the structure completes on four courses.
➢ Knitting sequence for a repeat as follows:
14

15. - First course: Knit on all odd number needles and miss on all even
number needles.
- Second course: Knit on all odd number needles and miss on all
even number needles. Similar as first course.
- Third course: Miss on all odd number needles and knit on all even
number needles.
- Fourth course: Miss on all odd number needles and knit on all even
number needles. Similar as third course.
15

16. Single Lacoste or Fred Perry Design:
> Single lacoste is a knit-tuck single jersey structure.
➢ So one set of needle is used to produce this structure.
➢ It is also a very popular structure to produce cut and sew knit wear.
➢ The prominency of the design appears on the back side of the fabric.
➢ The repeat of the structure completes on four courses. Knitting
sequence for a repeat as follows:
16

17. - 1st ourse: Tuck on all odd number needles and Knit on all even number
needles.
- 2nd course: Knit on all needles.
- 3rd course: Knit on all odd number needles and Tuck on all even number
needles, which is opposite of the first course.
- 4th course: Similar as second course knit on an needles.
17

18. 18

19. Double Lacoste Design:
• Double lacoste is a tuck-knit single jersey structure.
• So one set of needle is used to produce this structure.
• It is also a very popular structure to produce cut and sew
knit wear.
• The prominence of this design near to the single lacoste
fabric. The repeat of the structure completes on six
courses.
• Knitting sequence for a repeat as follows:
19

20. - 1st course: knit on all needles.
- 2nd course: Knit on all odd number needles and tuck on all
even number needles.
- 3rd course: Same as second course i.e. Knit on all odd
number needles and tuck on all even number needles.
- 4th course: Similar as first course knit on all needles.
-5th course: Tuck on all odd number needles and knit on all
even number needles, which is opposite of the rirst course.
- 6th course: Same as fifth course i.e. Tuck on all odd number
needles and knit on all even number needles.

21. Difference between Single jersey and Double jersey Fabric:
21

22. Difference between Plain and Purl:
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23. Conclusion:
 Single jersey fabric is weft knitted fabric. In its
structure there are ususlly knitt loops. For knitt loops,
the face side of fabrics make “V” shape and sinker
loops make back side semi circle.
 Single jersey fabric is used now world wide due to
more comfortable and less costly than any other
knitted fabric.
 This fabric is lighter than other knitted fabric and has
high extensibility.
 The uses of single jersey fabric is increasing day by day.
Many technical researches are going on now-a-days to
improve and make various single jersey derivatives.

24. Thank You All