JPS5916022B2 - Mercerizing method and equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mercerizing method and apparatus for applying mercerizing to the inner core of each prefecture of a textile product and polishing the inner core.

Conventional mercerization (mercerization) generally consists of treating textiles such as cotton cloth with 1-grade caustic alkali under tension for at most 40 seconds, and since the caustic alkali only penetrates into the surface fiber layer, it only leaves the surface shiny. It is difficult to obtain a soft and glossy mercerization process.

In addition, under tension, the natural twist of the fibers cannot be restored and distortions caused during weaving cannot be sufficiently corrected.

Furthermore, when mercerized in a non-tensioned state, stretchability is achieved, but the stability of the fabric is poor, and it is not desirable to have any value as clothing.

In order to fundamentally solve this problem, the present inventors immersed textiles in a hot aqueous solution of concentrated caustic alkali for about 10 minutes or more, and then repeated dewatering and dipping to soak the caustic alkali to the inner core. He discovered that it was possible to polish the inner core by penetrating the product, and also discovered that for this purpose it was better to retain the textile in a concentrated caustic aqueous solution in a boiling tank. The invention was completed in 1983 (No. 53696/1983).

The present invention is an improvement on this, and was made based on the knowledge that the mercerization effect is even more pronounced when the liquid is removed during the caustic treatment step, and has the following characteristics.

■ A caustic alkaline aqueous solution is boiled over a long period of time to allow it to fully penetrate textiles that have been completely swollen at high temperatures.

■ The caustic aqueous solution was drained, tension was applied, and then immersion was repeated to ensure penetration into the center.

■ In order to effectively replace water and caustic alkali inside the textile, deliquification using vacuum suction or squeezing rolls was repeated.

■ By penetrating the caustic alkali into the center of the scales, it gives cotton and cotton-Tetoron blend textile products (woven fabrics, knitted fabrics, etc.) a silk-like luster and a soft feel with a permanent gloss.

■ Cotton fabric has dimensional stability because its natural twist is restored and the distortion during spinning is completely removed.

The present invention will be explained below with reference to embodiments shown in the drawings.

In Fig. 1, a fabric 1 is impregnated with water in a water tank 2, squeezed to a moisture content of 48-50% in a mangle 3, and then dropped into a J-shaped boiling tank 4 in a folded manner. 5, for example, 23 g of a hot aqueous solution of caustic soda is injected.

The fabric continues to enter the liquid processing section 6 in the boiling tank 4 in a stress-free state, where it is passed through the submerged guide rolls 7 while being permeated with the caustic soda hot aqueous solution and squeezed by the mangle 10, as shown in FIG. The removal of liquid from the vacuum pipe 9 is repeated between the external guide rolls 8 and the caustic soda liquid penetrates into the inner core of the fiber.

The processing time in this boiling tank 4 is approximately 10 minutes.

Reference numeral 11 denotes a presser cloth that closes the suction hole of the vacuum pipe 9 from above the fabric 1, and thereby presses the suction hole over the entire length of the pipe 9 and prevents a decrease in the degree of vacuum, regardless of the increase or decrease in the thickness of the fabric.

The fabric leaving the boiling tank 4 passes through the mantle 10 and is then subjected to a tension treatment by timing the group of vertical tension cylinders 12, and is also subjected to aging by penetration of caustic soda into the interior.

The fabric is then treated with a hot aqueous solution of caustic soda for about 10 minutes in the same boiling tank 4 as before, passed through a mangle 10 and then passed through a group of tension cylinders 12, after which it is stretched out in a tenter 13 and subjected to a washing process (not shown). ) will be sent to.

[Brief explanation of the drawing]

FIG. 1 is a detailed explanatory diagram of the present invention, and FIG. 2 is a detailed diagram of part A of the same. 1...Fabric, 2...Aquarium, 3...
...Mangle, 4...Boiling tank, 5...
...Nozzle, 6...Liquid processing section, 7...
・In-liquid guide roll, 8... Out-of-liquid guide roll, 9... Vacuum pipe, 10...
Mangle, 11... Presser cloth, 12...
A group of vertical tension cylinders, 13... tenter.

Claims (1)

[Scope of Claims] 1. A step in which a textile product pre-moistened with water is immersed in a concentrated hot aqueous solution of caustic alkali, and the textile product, which has been dehydrated after going through this immersion step, is placed in the atmosphere for a period of time. By repeating the process of applying tension in the vertical or horizontal direction and feeding the textile, and inserting a dewatering process using vacuum suction or a squeezing roll during the immersion process in the concentrated hot aqueous solution of caustic alkali, A method for mercerizing textile products, which is characterized by infiltrating caustic alkali into the inner core of each prefecture forming the fiber. 2. A boiling liquid tank having a J-shaped longitudinal section and having a means for accommodating a concentrated aqueous solution of caustic alkali and heating the aqueous solution;
A system consisting of a group of longitudinal tension cylinders or a group of width extension tension cylinders with a set of expanders is installed in series, and the boiling liquid tank is equipped with a vacuum absorption type or squeezing roll type dewatering device above the liquid surface. A mercerizing device characterized by: