RR back laying knits are knits obtained by skipping the back, that is, the cover needles, in some systems in interlock circular knitting machines. With this system, fabrics with a raised front surface are obtained in general.
It is necessary to know the properties of the desired weave in the production of back lay weaves. The number of skipping systems affects the fluffiness or pattern of the weave. Here, the necessary machine settings for back lay knitting are important. Below is a knitting pattern as an example of back lay knitting.
Needle setting
All of the needles on the cover and cylinder of the machine must be in the interlock order for the back laying interlock knitting.
Steel settings
Adjusting the steel layout of the knitting pattern in the example should be as follows. When we look at the knitting report, it is seen that the loop and jump steel are used.
In the industrial knitting industry, the knitting for which the above report is given is also called ottoman knitting..
As can be seen in the steel report, the knitting model we have chosen as an example completes a report in 16 systems.
May setting
When we look at the knitting and steel reports of the knitting to be made, from the 1st to the 12th system, only the cylinder weaves; It is seen that the steels from the 13th to the 16th system are interlocked. Since all knitting systems make the same movement, the may settings should be the same in all systems.
Tension and pulley adjustment
In our back lay knitting, the yarn consumption amount of all systems is not the same. The amount of yarn consumed by systems between systems 1-12, where the rear steels jump, and the amount of yarn spent between systems 13-16 are not the same. So these two sections need to get the yarn feed from different pulley belts.
Fabric draft setting
It is constantly mentioned that the knitted fabric directly affects the fabric drafting setting of the machine. When the knitting report of this fabric is examined, it is seen that the 16 systems of the machine create 8 rows in the cylinder and 2 rows in the cover. Considering this situation, the shooting setting should be calculated according to the number of rounds.
After making all the necessary settings on the machine, some fabric should be knitted for sampling. No changes should be made in the machine settings during sample knitting. The sample fabric that comes out in fixed settings should be checked and the necessary settings should be made collectively. Otherwise, some adjustment changes made while knitting the sample may not be visible on a part of the sample fabric. Therefore, the fabric that is checked and the fabric produced at that stage may be different.
After the sample fabric is knitted, the machine should be stopped and the sample fabric should be cut and checked. First of all, it is checked whether the unit weight of the knitted sample fabric is at the desired level by comparing it with the sample sample, if any, and with the order form if it is not available. While these controls are being made, the knitted fabric should be rested for a while after it is removed from the machine. In businesses, these parts are relieved by rubbing between two hands.
The fabric with all controls may not have the desired properties. In this case, changes should be made in the machine settings for the desired features. If the sample has the desired property, the fabric should be produced. It should be noted that the same number of yarn is placed in the machine creels during production. If the machine is working for a long time, it should be checked by cutting samples from the fabric at certain intervals.
