JPS5818489A - Continuous dyeing of carpet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in continuous carpet dyeing methods.

Traditionally, as a continuous carpet dyeing method, undyed carpet is immersed in a dye solution, and the carpet is continuously introduced into a saturated steam chamber in that state, either by gently squeezing it or without squeezing it.
A method of fixing the dye was used. However, this method actually involves various problems.

First of all, when a carpet soaked in dye solution is introduced into a saturated steam treatment chamber (1) When a low temperature carpet (usually 20 to 50℃) enters a 100℃ saturated steam chamber, the steam condenses and the pile This adheres to the top and dilutes the padded dye solution, and furthermore, it migrates to the bottom, making the tip of the pie pale in color.

Second, carpets are usually coated with a larger amount of dye solution than normal textiles to prevent the end of the pile from becoming pale, but if there is a large amount of dye solution, naturally the amount of steam condensed also increases, resulting in thermal efficiency. This causes problems such as a decrease in the dye liquid, dye stains inside the device due to dripping of the dye solution, and a decrease in the dye utilization rate.

Fifth, since carpets are much thicker than ordinary fabrics, uniform heating to the inside of the carpet may not be achieved, resulting in longer dyeing times.

Naturally, even with conventional carpet dyeing methods, it is desirable to reduce the amount of dye solution applied to improve the efficiency of dyeing heat, but the smaller the amount of dye solution applied, the lighter the pile tip becomes. This kind of spear MI)
Therefore, it was difficult to set the staining conditions.

The present invention was made in view of the current situation, and an object of the present invention is to provide an improved continuous carpet dyeing method that solves the above-mentioned problems. In order to achieve this object, the present invention has the following configuration.

In other words, the present invention provides a continuous carpet dyeing method in which a dye solution is applied to the carpet and then steaming is performed to fix the dye. According to the method of the present invention, the pile can be dyed uniformly without causing the tip of the pie to become light colored. In the method of the present invention,
A high-frequency heating irradiation device is installed in the saturated steam treatment chamber.

When the carpet impregnated with the dye solution by irradiation in saturated steam is introduced into the saturated steam treatment chamber, the generation of steam drainage is minimized, and the interior of the carpet is rapidly heated to an external temperature. By doing so, it is possible to uniformly dye all the way to the tip of the pi μ with almost no migration of the dye solution.

The method of the present invention will be explained in detail below using one drawing. 1st
The figure shows an example of a dyeing apparatus used in the present invention in a side sectional sketch.

The undyed carpet (1) is dipped in a dye solution in a dye solution tank (2) and squeezed in a mange (3). In addition to the dip-nip method using a device (3), any method for applying the dye can be applied to the method of the present invention, such as a dye liquid foam coating method, a dye liquid spray method, or a method in which a dye liquid is applied by textile printing.

The carpet (!5) to which the dye solution has been applied is then introduced into the steam treatment chamber (5). A high frequency irradiation window (4) is installed in the steam treatment chamber (5) from the top of the chamber, and through this window High frequency waves sent from a high frequency generator (b) through a waveguide (transfer) are irradiated.

The carpet to which the dye solution has been applied is rapidly heated in a steam treatment chamber (5) by high frequency heating and saturated steam.

In the present invention, it is necessary to provide 5 to 50 or more of the amount of heat provided in the first steaming step (steam 9 & treatment in the laboratory (5)) by high-frequency heating.

That is, the amount of heat Q of the high frequency heating used and the amount of heat Q- of the steam heating used are biased by the following formula, and from the high frequency ~ + N + ? il danced:=i% g,
) (・tA) Pw: High frequency generated power (mouth/H) t: n-pack lj7) 4) 11, "] η: Wakisakiso←O, JiS: Steam amount (#) r: Steam used When calculated using latent heat (&j/#) 9 The conditions for use in the present invention are Ql:
Qa=5 to 50:95#50 is uniform. The high frequency referred to here is the frequency currently used industrially, 915±50.2450±50MHz.
means.

The reason why the amount of heat of high-frequency heating was reduced in this way is that the above-mentioned remarkable effect was not observed at 5% or less;
This is because if the dye is 6 or more, the above-mentioned effects are observed, but the cost increases and the dyeing efficiency tends to decrease.

The time that the carpet to which the dye liquid has been applied stays in the high-shoulder wave heating combined steam burying chamber (5) is sufficient to be the time required for the temperature of the dye liquid-applied carpet itself to reach the ambient temperature, that is, 100°C. The steaming chamber (6) following the steaming chamber (5) is a conventional steaming chamber in which the dye remains for a period of time necessary to become fixed on the carpet.

If the dye is sufficiently fixed to the carpet only by the steaming chamber (5), the steaming chamber (6) may not be provided. After the dye fixation has been completed, remove the undyed dye in a commonly used washing tank (not shown) using the usual method, and wash it in the last tank of the washing tank as required. Add antistatic agent, softener, etc.

Then, it is introduced into a drying chamber (not shown) and dried.

The present invention has the above structure, and according to the method of the present invention, a carpet can be uniformly dyed without the pile tips becoming light colored.

Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto.

Example 1 When continuously dyeing a carpet (pile cut length 20M) tufted with wool 10011f spun yarn for the pile, it was padded with a 9-order padding recipe and squeezed with a pickup of 110%.

Padding prescription Irgalan RubineBL (Alloy dye manufactured by Ciba Geigy) 409/1 Urea 5097
g alginic acid 1 9/1 pH (acetic acid) adjusted to 4, then steam heat at 100℃ using high frequency heating output 15'' (25% of the total heat amount due to high frequency heating)
(adjusted to ) for 5 minutes, and then in a saturated steam treatment chamber for 10 minutes, followed by ordinary water washing and drying. The result is a dyeing effect equivalent to that of normal immersion dyeing,
A good dyed product was obtained which was uniformly dyed up to the tip of the pie.

Example 2 Bulky nylon yarn (BCF) 2000 for carpet
When continuously dyeing a carpet that has been tufted using T1 as a pile yarn, a dye bubble solution with the following coating formulation was prepared and 45% was picked up on the carpet pile.
Coated with.

Coding recipe Fbron Navy Blue R909/1 octice A'7A) 29/# After adjusting the pH to 4 with acetic acid, the apparent specific gravity was 0.
Whisk until it reaches 15%.

The carpet coated with the dye bubble solution was treated with a combination of high frequency heating and steam heating under the same conditions as in Example 1, followed by saturated steam treatment, washing with water, and drying.

After the dyeing was completed, the carpet was of good quality and was dyed even to the top of the pile.

[Brief explanation of drawings]

FIG. 1 is a side sectional sketch of an example of the dyeing apparatus used in the present invention. Q) (rj (n is carpeller), (S) is a high-frequency combined steam treatment chamber, (6) is a normal ivy heat burial chamber. Figure 2 is a cross-sectional view taken along the line A-A in Figure 1. The high frequency waves are irradiated from the generator (b) through the waveguide to the carpet (1) from the irradiation window (4). Patent applicant Unitika Co., Ltd.

Claims (1)

[Claims] (1) In a continuous carpet dyeing method in which a dye solution is applied to the carpet and then steamed to fix the dye, 5 to 5051 of the amount of heat given in the first steaming step after applying the dye solution is applied by high-frequency heating. A continuous carpet dyeing method characterized by: