In the warp knitting technique, the yarns that will form the texture are wrapped in the warp beams beforehand, as in weaving machines, and sent to the knitting zone collectively. It is the fastest fabric making technique. At least one thread comes to each needle, and for the formation of the loop, all the needles are lifted up at the same time and the loops are formed at the same time in each horizontal and vertical row.
Knitting surface is formed by forming a linked loop by making a zigzag in the transverse and longitudinal directions. Due to this feature, it is not possible to disassemble the fabric and escape the loops in warp knitting. The flexibility of knitting is very low.
The loops used in warp knitting are formed in two ways, open loop and closed loop, according to the foot connection structures and the image they give in the structure. The most prominent feature is that the foot parts of the closed loop are not crossed, while the foot parts of the open loop are not crossed.
Warp knitting machines; Tricot (warp automaton) is divided into two groups as raschel. In the past, flexible needles were used in Tricot machines and hooked needles were used in Raschel machines. By looking at the needle type of a machine, tricot or
appears to be raschel. Today, both needles have been replaced by a compound needle (slide needle). The role of platinum and platinum used in the formation of loops plays an important role in understanding the machine in which the fabric is produced. It has a wide range of uses such as sports, packaging, automotive, military, clothing, etc..
Flat warp knitting machine using RL-flexible needle
In this knitting machine with two beds perpendicular to each other, flexible needles are used. To aid knitting, the machine has thread guides. While the lower needle bed only oscillates, the upper needle bed can both oscillate and move back and forth.
Flat warp knitting machine using RL-tongue needle
Latch needles are used in this knitting machine with two beds perpendicular to each other. To aid knitting, the machine has thread guides. While the lower needle bed is oscillating and moving up and down, the upper needle bed is moving back and forth.
Flat warp knitting machine using RL-sliding needle
Sliding needles are used in this knitting machine, where there are two beds perpendicular to each other. To aid knitting, the machine has thread guides. While the lower needle bed can only move up and down, the upper needle bed can both oscillate and move back and forth.
RL-monorail flat warp knitting machine (Milan type)
In this knitting machine with two beds perpendicular to each other, flexible needles are used. To aid knitting, the machine has thread guides. While the lower needle bed can only move up and down, the upper needle bed can move both oscillating and back and forth, and can also provide a movement close to rotation.
RL-monorail flat warp knitting machine (Sope type)
Flexible point needles are used in this simple machine with a single horizontally positioned needle bed. Needles move back and forth in the needle bed.
Flat warp knitting machine (Raschel type) using RR-tongue needle
In these knitting machines with slightly more complex structures, the latch needles are moved, allowing more movement in a larger number of needle beds. The beds at the bottom are not flat but positioned at an angle to each other. Likewise, the number of thread guides used has been increased.
RR-flat warp knitting machine (Simplex type)
Both the lower and upper bearings are located in the machine at an angle to each other. While the upper bearings make oscillating and forward-backward movements, the lower bearings move back and forth. Flexible needles are used. There are thread guides.
RL-round warp knitting machine (Maratti type)
In the Maratti type circular warp knitting machine, the needles form knitted structures by rotating on the cylindrical needle bed and moving up and down.
RL-round warp knitting machine (round Milan type)
In Milan type circular warp knitting machine, the needles form knitted structures by rotating on the cylindrical needle bed and moving up and down. Unlike the Maratti type, sliding needles are used.
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