JPH0124907B2 - - Google Patents

Description

Detailed Description of the Invention Industrial Field of Application The present invention is a process in which knitted fabrics such as warp knitted fabrics and cut circular knitted fabrics are immersed in a predetermined solution and padded, then heated to develop color and washed with water. Concerning continuous dyeing of knitted fabrics.

Conventional techniques and problems to be solved by the invention Conventionally, in the above continuous dyeing method of knitted fabrics, the curl of the selvage increases in the steaming chamber, and as a result, the dyed knitted fabric product has curl wrinkles at the selvage. The knitted fabric has disadvantages such as the occurrence of resting, which is a difference in hue between the central part and both ears, the loss of the necessary elasticity of the knitted fabric, and the knitted fabric being made longer than necessary.

The present invention provides a continuous dyeing method for knitted fabrics that prevents wrinkling and resting of the selvedges, provides uniform dyeing, and has elasticity and product quality comparable to batch dyeing methods.

Means for Solving the Problems That is, the present invention involves a continuous dyeing method for knitted fabrics in which a knitted fabric is immersed in a predetermined solution, padded, and then steamed to develop color and washed with water. The knitted fabric was rotated between guide rolls while relaxing the tension in the warp direction until stable color development was obtained (hereinafter referred to as the A zone). Tentering is carried out using a tentering machine while relieving the tension in the warp direction (hereinafter referred to as the B zone), and the knitted fabric after tentering is passed through the Nitz roll, Winslow, and a number of guide rolls placed at short intervals between them. to prevent the ears from curling by rotating while relieving tension in the longitudinal direction (hereinafter referred to as
It's called the C zone. ) by adding a process.

Function and Effects of the Invention In the present invention, the knitted fabric undergoes the A zone process and then the B zone process in the steam heating chamber, so that it can be widened without causing resting. If only the B zone process is carried out, there is a disadvantage that dyeing spots will occur over the entire surface of the knitted fabric, and if only the A zone process is carried out, there is a disadvantage that wrinkles in the selvage part cannot be sufficiently prevented. Furthermore, by going through the C-zone process, the knitted fabric is finished without slipping, and the increase in curl at the edges is prevented. In each process of the A zone, B zone, and C zone, the tension in the warp direction of the knitted fabric is adjusted to loosen it, so there is no loss of elasticity, and there is also the disadvantage of making the fabric longer than necessary. Corrected.

Embodiments An embodiment of the invention is shown in the drawings. 20 is a device for squeezing the knitted fabric 10, which has been immersed in a predetermined solution of dyes and chemicals and sufficiently spread, to a constant squeezing rate;
0 is two guide rolls. 40 is a steam chamber, 41 is a main body, 42 is an inlet, and 43 is an outlet. 50 is a guide roll for performing the A zone process;
51 is a driving roll, and 52 is an idler roll. 6
0 is a tentering machine that performs the B zone process, 61 is an expander roll, 62 is a drive roll, and 63 is a bar that moves in the horizontal direction to adjust the area in which the knitted fabric contacts the expander roll 61. can. 7
0 performs the C zone process, 71 is a nip roll consisting of a drive roll 711 and an idler roll 712, 72 is an idler roll, 73 is a drive roll,
74 is a win roll. Each roll interval is
Installed without exceeding 500 mm.
80 is a bar 81 provided to ensure the amount of knitted fabric. 90 is the next process (washing process) of the knitted fabric
91 is a drive roll, and 92 is a bar. Each of the drive rolls 51, 62, 711, 73, 74 and 91 in the steaming chamber 40 can adjust the tension of the knitted fabric therebetween via a transmission (not shown).

[Brief explanation of drawings]

The drawings are explanatory diagrams of the present invention. 10...Knitted fabric, 20...Pasuda, 40...Steaming chamber, 50...Guide roll, 60...Tentering machine, 71
...Nitspro roll, 72,73...Guide roll,
74... Winthrop.

Claims (1)

[Claims] 1 In the knitted fabric continuous dyeing method, in which the knitted fabric is immersed in a predetermined solution and padded, then steamed to develop color and washed with water, the knitted fabric is dyed in the warp direction in a steaming chamber until stable coloring is obtained on the knitted fabric. After rotating the knitted fabric between guide rolls while relieving the tension, the knitted fabric with stable coloring is subjected to tentering with a tentering machine while relieving the tension in the warp direction, and the tentering is completed. The ivy knitted fabric is made by adding a process to prevent curling of the selvedges by rotating the Nitsu roll and Wins roll and a number of guide rolls placed at short intervals between them while relieving tension in the warp direction. Characteristic continuous dyeing method for knitted fabrics.