JPH0135943B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous fabric dyeing apparatus particularly suitable for continuous dyeing of fabric using thren dye.

Many proposals have been made for continuous dyeing methods and equipment for industrially produced fabrics, and recently the fabric to be dyed is continuously passed through a high-pressure steamer can that can maintain high temperature and high humidity. A dyeing method and apparatus have been realized that can continuously carry out dyeing at high speed and with a good degree of dyeing. In other words, the above-mentioned dyeing method using a high-pressure steamer can, which has been researched and developed over many years, uses high temperatures associated with pressures higher than normal pressure,
For example, by performing high-temperature steaming and boiling through a fabric coated and impregnated with dye in an atmosphere of saturated steam at around 150°C, it is possible to achieve extremely superior dyeing compared to dyed products treated with moist heat at normal pressure. has been proven.

However, depending on the fabric to be dyed, it has been considered to reduce dyeing costs by dyeing using relatively inexpensive dyes, such as threne dyes and hydrosulfite reducing agents. , such hydrosulfite cannot withstand high temperatures, and when exposed to air for a long period of time, it deteriorates and loses its effectiveness as a reducing agent. Therefore, the threne dye and reducing agent mentioned above are used. During dyeing, it was impossible to use the high-pressure steamer can.

The present invention has been made in view of the above circumstances, and it improves the dyeing properties of thren dyes without exposing the reducing agent to the atmosphere for a long period of time, and without exposing it to high temperatures, thereby reducing costs. The object of the present invention is to provide a continuous fabric dyeing device that can perform inexpensive dyeing processing.

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

Reference numeral 1 denotes a fabric to be dyed, 2 a liquid dish for applying threne dye to the fabric 1, and near this liquid dish 2, a liquid supply pipe 5 capable of sequentially supplying dye liquid in an amount equal to the amount absorbed by the fabric. is provided, and a fabric guide roll 3 is disposed close to the liquid tray 2.
Further, a pressure roll 4 is provided opposite to the fabric guide roll 3, so that the liquid content of the dye applied to the fabric 1 can be adjusted. 6 is an infrared heater installed above the fabric guide roll 3; 7 is a drying chamber formed above the infrared heater 6; inside this drying chamber 7, a drying heater 8 is arranged. has been done. 9 is a timing piler for naturally cooling the fabric pulled out from the drying chamber 7; 10 is a reducing agent tray for applying a reducing agent to the fabric pulled out from the timing piler; A fabric guide roll 11 is disposed adjacent to the fabric guide roll 11 so that the reducing agent in the reducing agent tray 10 is sequentially applied to and impregnated into the fabric guided and transferred by the fabric guide roll 11. Further, an amount of reducing agent equal to the amount absorbed by the fabric is sequentially supplied into the reducing agent receiving tray 10 from a supply pipe 10'. Reference numeral 12 denotes a pressure roll installed opposite to the guide roll 11, 13 an infrared heater installed above the guide roll 11, and 14 a rigid wet heat treatment chamber formed above the infrared heater 13. , 15 is a conveyance means for timing the fabric pulled out from the moist heat treatment chamber 14 in the air to proceed with appropriate oxidation, and 16 and 17 are notension washing machines. Since this is already known and is not the gist of the present invention, a detailed explanation of its mechanism will be omitted.

The above is the configuration of this embodiment.Next, to describe its operation, indanthrene dye is sequentially supplied into the liquid tray 2 in an amount equal to the amount absorbed by the fabric, and hydrosulfur is supplied into the reducing agent tray 10. Preparations are made by sequentially supplying phyte (reducing agent) by the amount absorbed by the fabric and further heating the infrared heaters 6 and 13. Thereupon, the fabric 1 to be dyed is guided into a liquid dish 2 and impregnated with an appropriate amount of thren dye, then rapidly heated by an infrared heater 6 heated to, for example, 800°C, and then passed through a drying chamber 7 to inject the thren dye into the fabric. to become established. Next, the fabric is taken out of the drying chamber 7, allowed to cool naturally on a timing piler 9, and then guided into a reducing agent receiving tray 10 to absorb the reducing agent into the fabric to which the thren dye is fixed. At the same time as this reducing agent is absorbed, the reaction of the thren dye occurs rapidly, and the thren dyeing progresses. Furthermore, this fabric is immediately heated by the infrared heater 13 to prevent the reducing agent from flowing down, and then passed through the moist heat treatment chamber 14 and subjected to the moist heat treatment to complete the dyeing. After passing through step 17, it is cleaned and transferred to the next process.

In this example, the indanthrene dye and the hydrosulfite can be separated and the hydrosulfite can be applied at room temperature after the indanthrene dye is heated and fixed.
The hydrosulfite is not heated before the reaction, and therefore effective dyeing can be achieved without deterioration of the hydrosulfite or its effectiveness as a reducing agent being halved.
In addition, the amount of hydrosulfite supplied into the reducing agent tray 10 is set so that it is supplied sequentially by the amount absorbed by the fabric, so that fresh reducing agent can always be applied to the fabric, so that the reactive dyeing of thren dye can be carried out. It also has the effect of increasing adhesion.

As described above, the present invention provides a liquid tray equipped with a liquid supply pipe that sequentially supplies thren dye in the amount absorbed by the fabric;
A guide roll for guiding the fabric into this liquid tray, a heating means for heating and drying the dye-impregnated fabric pulled out from this guide roll, and a timing piler for naturally cooling the fabric pulled out from this heating means. , a reducing agent tray and a guide roll for immersing the fabric pulled out from the timing piler in a reducing agent and reactively dyeing the thren dye, and successively pouring the reducing agent into the reducing agent tray in an amount equal to the amount absorbed by the fabric. Continuous dyeing of fabric, which is equipped with a supply pipe, a heater for rapidly removing the reducing agent solution from the fabric drawn out from the reducing agent tray, and a steamer for subjecting the fabric that has passed through the heater to a wet heat treatment. According to this device, since the threne dye and its reducing agent are used in a separated state, the threne dye before being applied to the fabric does not react. In addition, since the reducing agent is sequentially replenished into the saucer by the amount absorbed by the fabric,
The reducing agent is not damaged by being exposed to the atmosphere for a long time, and effective dyeing can be carried out using fresh reducing agent at all times. Further, the fabric coated and impregnated with the reducing agent is immediately heated by a heater, and water is rapidly removed, so that uneven dyeing due to the reducing agent running off can be effectively avoided.

[Brief explanation of drawings]

The drawing is an explanatory view showing an embodiment of a continuous dyeing apparatus according to the present invention. 1...Fabric, 2...Liquid plate, 3...Fabric guide roll, 4...Press roll, 5...Liquid supply pipe, 6...
Infrared heater, 7... Drying room, 8... Heater, 9
... Timing piler, 10 ... Reducing agent tray, 10' ... Supply pipe, 11 ... Guide roll,
12... Press roll, 13... Infrared heater, 1
4...Moist heat treatment chamber, 15...Transportation means, 16,1
7...Nortension cleaning machine.

Claims (1)

[Claims] 1. A liquid tray equipped with a liquid supply pipe that sequentially supplies threne dye in an amount equal to the absorption amount of the fabric, a guide roll for guiding the fabric into the liquid tray, and a method for heating and drying the dye-impregnated fabric pulled out from the guide roll. a heating means, a timing piler for naturally cooling the fabric drawn from the heating means, a reducing agent receiver for immersing the fabric drawn from the timing piler in a reducing agent to reactively dye the thren dye; A guide roll, a supply pipe that sequentially supplies reducing agent in an amount equal to the absorption amount of the fabric into the reducing agent receiving tray, and a heater for rapidly removing the reducing agent solution from the fabric pulled out from the reducing agent receiving tray. and a steamer for subjecting the fabric that has passed through the heater to a wet heat treatment.