Fabric manufacturing 2, wrap Knit fabric manufacturing machine

1. Warp knitting Machines
KEY WORDS:
o Introduction
o Classification
o Raschel m/c & parts
o Tricot m/c & parts
o Design of raschel m/c
o Design of tricot m/c
o Products of warp knitting m/c

2. Introduction:
Based on the feature of warp knitting, the machine is
classified into two categories . Tricot & Raschel. Both tricot
& raschel may be made with single needle bar or double
needle bar .
WARP KNITTING M/C
Tricot m Raschel m/c

3. Key Raschel Machine Characteristics
• Typically knit with latch needles or
compound needles
• Machine gauge – needles per inch 1 to 32
gauge range
• Suitable for coarse gauge open‐work.
• Open‐work utilizes pillar stitches, inlay
lapping variations, and partly‐threaded guide
bars.
• Raschel arrangement of sinkers makes this
possible.

4. Raschel m/c

5. Key Tricot Machine Characteristics
>28 and 32 gauge machines popular for two bar tricot
with machine widths of 84 and 168 inches and using
40‐denier nylon
>Possible to knit from 10‐denier nylon up to 20/1 cotton
count
>Machine gauges can range from 10 needles per inch for
coarse spun yarns to 20‐24 needles per inch for textured
yarn fabrics
>36‐44 gauge (needles per inch) for fine fabrics

6. Tricot m/c

7. Parts of warp knitting m/c
Guide Bars Needle Bars
Latch Needles
Bearded Needles

8. CompoundNeedles
Guide Bar Motions Sinker
Compound Needles Type
2

9. Yarn path diagram of warp m/c

10. Tricot m/c design
1 Loop Raised open Two Bar Tricot
Locknit Structure
Reverse Locknit

11. Common Net Structure ‐ Marquisette
Three Guide Bar Marquisette Net
Interlacing Pillar Nets Marquisette ‐ magnified
Raschel m/c design

12. Motion transfer

13. Working principle

14. Warp knitting products
Tubular articles
Packing sacks
Pile fabrics
Branching tubular fabrics
Pattern fabrics
Safety textiles

15. Thank you