Difference between Tricot & Raschel Warp Knitting Machine

Difference between Tricot & Raschel Warp Knitting Machine
Rofiquzzaman Raju
Fabric Technologist,
B.J.Group, Mawna, Gazipur
Email: rtextile.finance@gmail.com



Tricot Warp Knitting Machine:
In tricot warp knitting m/c compound needles are used. The warp yarns are feed to the needles through guide bars using shogging and swinging motion. Normally tricot warp knitting machine is used for fashion fabrics, mesh fabrics.
tricot warp knitting m/c
Tricot warp knitting m/c
Raschel Wrp Knitting Machine:
Rachel m/cs used latch needles together with a wire or blade. It has a gauge expressed in needles per 2inches (5cm) so that for example a 36 gauge Rachel m/c will have 18npi. Rachel Warp Knitting Machine is used for lace fabric and trimmings. It is also used to produce in outdoors and military fabrics for products such as backpacks.
Raschel Warp Knitting Machine
Raschel Warp Knitting Machine
Difference between Tricot & Raschel warp knitting m/c:
Tricot warp knitting machine
Raschel warp knitting machine
  1. In the past, bearded needle was used but now a days compound needle used
  1. Rachel m/c used latch needle together with a wire or blade
  1. M/C gauge expressed in needle per inch
  1. M/C gauge expressed in needle/inch
  1. Chain link numbering  0, 1, 2, 3, ….etc
  1. Chain link numbered in even numbers 0, 2, 4, ….etc
  1. Three links per course
  1. 2 links per course
  1. Function of sinker is holding down, knocking and supporting the fabric
  1. Sinker performs the function of holding down the loops whilst the needle rise
  1. The sinker are joined to each other at the front and back
  1. The sinker are not joined together by a lead across their ends nearest to the needle bar
  1. The sinker never move clear of needles
  1. They can move clear of the needles towards the back of the m/c for the rest of the knitting cycle
  1. The fabric is drawn away towards the batching roller almost at right angles to the needle bar
  1. The fabric is drawn downwards from the needles almost parallel to the bar at an angle of 120°-160°
  1. The warp beams are accommodated in an inclined arc towards the back of the m/c there the top
  1. The warp beams are arranged above the needle bar centered over the rocker shaft
  1. The warp sheets pass over the top of the guide bar rocker shaft to their tension
  1. The warp sheets pass down the guide bar
  1. Mechanical attention is carried out at the front of the m/c
  1. Mechanical attention is carried out at the back of the m/c
  1. The guide bars are numbered from the back towards the front of the m/c
  1. The guide bars are numbered from front of the m/c
  1. High speed production
  1. Low speed production
 

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