JPH0156182B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous fabric dyeing method and apparatus for dyeing a long fabric impregnated with a dye or coated with a print by steaming.

Conventional methods for continuously coloring (dying) large quantities of long fabrics produced industrially include, for example, a wet heat reaction chamber such as the Purple Range (trade name) developed by the present inventor or a high-pressure steamer. It has been proposed to carry out continuous dyeing using a conventional continuous dyeing method for long fabrics, but in this conventional continuous dyeing method, dyeing is first carried out in a dye solution in a dye bath installed outside a moist heat reaction chamber. After passing the fabric to be immersed and then squeezing out the excess liquid from the liquid-impregnated fabric with a squeezing roll, the liquid impregnated into the fabric should be adhered to the seal roll or guide roll of the heat-and-moisture reaction chamber. In order to prevent this, intermediate drying is carried out, and then the fabric is fed into a wet heat reaction chamber and steamed to fix the dye to the fabric. The coated fabric was directly fed into a wet heat reaction chamber and steamed to fix the dye onto the fabric.

However, in such conventional dyeing methods, whether for plain dyeing or print dyeing, the room-temperature fabric in which the dye is half-dried is directly fed into a steamer where high humidity is maintained. A large amount of water may adhere to the surface of the fabric immediately after it is fed into the steamer, and the half-dried dye coated on the surface of the fabric may fall off with the large amount of water, or the printed pattern may bleed and become unclear. There was a problem. In other words, the fabric at room temperature is, for example, 100
When the fabric is suddenly fed into a high temperature and humid steamer that is heated to close to The above-mentioned problems occur because of the adhesion.

The present invention was made to solve this problem, and involves heating a fabric coated and impregnated with a dye under low humidity and high temperature, and then transferring it to a high humidity and high temperature steamer can without lowering the temperature of the heated fabric. The object of the present invention is to provide a dyeing method and apparatus for fixing dye fixation onto a fabric by supplying the dye to a cloth and subjecting it to a moist heat treatment.

Therefore, according to this dyeing method and apparatus, a large amount of dew does not adhere to the fabric surface by heating the dye-coated fabric at low humidity and high temperature before being fed into the steamer can. Therefore, the half-dried dye on the fabric surface is heated without falling off. By supplying the fabric heated in this way into the steamer can and steaming it, dew adhesion to the fabric does not occur and steaming is carried out only by the humidity inside the steamer can, thereby effectively fixing the dye to the fabric. The dyeing is clear and of good quality.

The present invention will be described in detail below based on embodiments shown in the drawings.

Example 1 In FIG. 1, this example is an example in which plain dyeing is carried out, and numeral 1 is a heat treatment chamber formed in an inverted U-shape. A fabric inlet 2a and a fabric outlet 2b are formed in parallel, and an exhaust port 3 is formed at the top of the heat treatment chamber 1. 4 is a liquid tank for impregnating the fabric 5 to be supplied into the heat treatment chamber 1 with an appropriate dye;
6 is a squeezing roll for adjusting the liquid content of the dye liquid.

7a and 7b are fabric introduction ports 2a in the heat treatment chamber 1
The heaters 7a and 7b are arranged in the vicinity on the left and right to sandwich the fabric transfer path, and these heaters 7a and 7b are heated by infrared heat using electric heat, gas burner, or the like. Reference numeral 8 denotes a steamer can having an inlet leading to the fabric outlet 2b of the heat treatment chamber 1;
Inside are a spreading guide roll 9 that guides and transports the fabric in a meandering manner while spreading it in the width direction, and a steam supply pipe 10 and a steam applying pipe 11 that apply steam to the fabric that is guided and transferred by the spreading guide roll 9. is installed.

The above is the configuration of this embodiment.Next, its operation will be described. First, the fabric 5 is passed through the liquid tank 4 to be impregnated with the dye liquid, and then the liquid content is adjusted with the squeeze roll 6, and then the fabric 5 is transferred to the heat treatment chamber. Supply within 1. The liquid-containing fabric supplied into the heat treatment chamber 1 is heated to a heater 7.
It is heated to, for example, close to 100°C by receiving radiant heat from a and 7b, but since the inside of the heat treatment chamber 1 is kept in a relatively dry heat state, the fabric 5 is heated without dew adhering to it. Ru. The fabric heated in this way is supplied into the steamer can 8 without causing a temperature drop due to contact with the outside temperature, so that the fabric is steamed without any abnormal dew adhering to the surface of the fabric, and the steaming Effective dyeing occurs as the process progresses. Therefore, there is an effect that solid color dyeing with good dyeability can be achieved without causing the dye to fall off.

Example 2 In FIG. 2, this example is an example of dyeing a fabric 5' coated with a dye print, and a fabric inlet 2a provided at the bottom of a rigid heat treatment chamber 1' is directly under the fabric inlet 2a. A spray 4' is arranged to apply appropriate moisture or auxiliary agents to the printed fabric, and heaters 7a' and 7b' using gas burners are placed in the vicinity of the fabric inlet in the heat treatment chamber 1', sandwiching the fabric passage. They are arranged oppositely on the left and right. Since the other structures are the same as those of the previous embodiment, the same reference numerals are given and the explanation of the mechanism will be omitted.

Therefore, in this embodiment, after the fabric 5' coated with the dye is hydrated by the spray 4' to an extent that the dye will not fall off, the fabric is supplied into the heat treatment chamber 1' and heated to a heater. 7a', 7
By receiving the heat generated by b', the fabric is rapidly heated to, for example, close to 100° C., and a dyeing reaction begins to occur due to the moisture from the spray. Next, since this heated fabric is supplied into the steamer can 8 without causing a temperature drop due to contact with the outside temperature, the fabric is steamed without any abnormal dew adhering to its surface, and the steam is heated. Effective dyeing is achieved as teaming progresses. Therefore, there is an effect that print dyeing with good dyeing properties can be carried out without causing the dye to fall off or the pattern to become unclear.

As described above, the present invention involves heating a fabric coated and impregnated with a dye at a high temperature with low humidity, and then feeding the heated fabric into a humid and high temperature steamer can for wet heat treatment without lowering the temperature of the fabric. Therefore, before the dye-coated and impregnated fabric is fed into the steamer can, it is heated by dry heat to near the steamer can temperature, and then this heated fabric is steamed, so that the dye is In a state where the dye is likely to fall off, a large amount of dew does not adhere to the fabric, and therefore, the falling off or bleeding of the dye is eliminated, and continuous dyeing with clear and good quality can be achieved.

[Brief explanation of drawings]

The drawings all show embodiments of the continuous dyeing apparatus according to the present invention, with FIG. 1 being an explanatory diagram of the first embodiment, and FIG. 2 being an explanatory diagram of the second embodiment. 1...Heat treatment chamber, 2a...Fabric introduction port, 2b...
...Fabric outlet, 3...Exhaust port, 4...Liquid tank, 4'
...Spray, 5, 5'... Fabric, 6... Squeezing roll, 7a, 7b, 7a', 7b'... Heater, 8...
... Steamer can body, 9 ... Spreading guide roll, 10
...Steam supply pipe, 11...Steam application pipe.

Claims (1)

[Scope of Claims] 1 A fabric coated and impregnated with a dye is heated at a high temperature with low humidity, and then, without lowering the temperature of the heated fabric, it is fed into a steamer can of high humidity and high temperature to perform moist heat treatment. A method for continuous dyeing of fabric. 2. A heating chamber equipped with a heating means for heating a fabric coated and impregnated with dye with high heat at low humidity, and a heating chamber equipped with a heating means to heat the fabric coated and impregnated with a dye, and a heating chamber equipped with a heating means to heat the fabric coated and impregnated with dye, and a heating chamber equipped with a heating means for heating the fabric coated and impregnated with dye, and a heating chamber equipped with a heating means for heating the fabric coated and impregnated with dye, and a heating chamber equipped with a heating means for heating the fabric coated and impregnated with dye. A continuous fabric dyeing apparatus comprising a heating chamber and a steamer can formed next to the heating chamber.