JPH0641861A - Production of synthetic fiber raised product - Google Patents

Abstract

PURPOSE:To provide the raised product uniform in pile directionality and free from whitish faded portions. CONSTITUTION:A synthetic textile fabric is raised and then put to fluff binding raising using a card clothing raiser alternately equipped with pile rollers and counter pile rollers; the resultant fabric is heat treated and dyed and then put to shearing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a synthetic fiber napped product, and more particularly, a synthetic fiber napped product having no unevenness in the direction of the pile and no white blur, which is suitable for automobile interior materials and the like. Manufacturing method.

[0002]

2. Description of the Related Art Conventionally, Tricot velor, which is one of synthetic fiber napped products, is known to be used as an automobile interior material. And as a method for producing this tricot velor, the knitted fabric is raised and cut to raise naps, and then dyed and shuffled, or the knitted fabric is raised and then dyed, and then cut and raised to nap. There is known a method of causing a shirring process.

[0003]

However, when a knitted fabric in a napped state is dyed using a jet dyeing machine or the like, there is a problem in that unevenness in the direction of the pile occurs, and chinchilla-like hair disorder occurs. . In addition, there is a problem in that, when performing loop raising after dyeing, whitening occurs due to factors such as handling of the yarn surface and alteration of the filament surface due to drawing tension.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for producing a synthetic fiber napped product having no unevenness in the directionality of piles and no white blur. .

[0005]

SUMMARY OF THE INVENTION The above-mentioned object is to fluff and cut fluff a synthetic fiber cloth to give rise to nap, and then fluffing it using a cloth nap raising machine in which pile rollers and counterpile rollers are alternately arranged. This is achieved by a method for producing a synthetic fiber napped product, which comprises raising hair, followed by heat treatment, followed by dyeing and then shirring.

Hereinafter, each step of the method of the present invention will be described in more detail.

Examples of the synthetic fiber used in the method of the present invention include multifilaments such as nylon, polyester and acryl. From the viewpoint of weather resistance and heat resistance, polyester multifilaments are preferable, and those having a denier of 2.5 denier or less are particularly preferable. With fine denier, a good texture is obtained.

The fabric may have any structure as long as it can be raised after weaving or knitting, but a tricot having two or more reeds is preferable. In the case of a tricot, it is preferable in terms of feeling that the raised yarn side is made finer than the non-raised yarn side in terms of denier.

In the method of the present invention, the synthetic fiber cloth having such a structure is raised by raising the loop and then cut and raised by cutting the loop. The machine used in this raising process needs to be a needle cloth raising machine, and the thistle raising machine cannot exert the effect of pulling out a predetermined loop, so the object of the present invention cannot be achieved.

The needle cloth raising machine used for fluff raising in the present invention may be one normally used for surface treatment of woven or knitted fabric, as long as it has two kinds of rollers, a pile roller and a counterpile roller, alternately. it can. A schematic view of such a cloth raising machine is shown in FIG.

As shown in the figure, the cloth raising machine (1) is
A drum (2) and a pile roller (3) and a counter pile roller (4) which rotate around the drum (2) and are alternately arranged are main components. In the figure, the treated cloth (5) is introduced from the left side of the drum (2) and is contacted with the pile roller (3) and the counter pile roller (4) to proceed clockwise for processing.

Next, the details of the fluff raising process using the above-mentioned cloth raising device (1) will be described. The clothing cloth raising machine (1) can change the rotation speed of each roller by adjusting the contact pressure of the pile roller (3) and the counter pile roller (4). Generally, when the number of rotations of the pile roller (3) and the counter pile roller (4) is the same as the number of rotations of the drum (2) and these rollers have no effect on the fabric, the machine base is referred to as 0 rotation. Call.

In the present invention, it is necessary to make the rotation speeds of the pile roller (3) and the counter pile roller (4) different so as to change the action of both rollers. By setting the number of rotations such that the number of rotations of the pile roller> the number of rotations of the drum> the number of rotations of the counter pile roller, the treatment effect of the fluffing and raising hair is maximized.

Further, the drum rotation speed is 50 to 180 rotations /
min is preferable, and the traveling speed of the treated fabric is 5 to 30 m.
/ Min, preferably about 8 to 15 m / min.

After the fluffing and raising of hair, a heat treatment is performed.
The optimum condition of heat treatment depends on the performance of the setter, the use of the yarn of the cloth, the texture / density, the thickness, and many other factors, but in general, 160 to 1 for polyester is used.
90 ° C., 150 to 180 ° C. with nylon, and the treatment time is 30 to 90 seconds.

The napped fabric that has undergone the above-mentioned pre-process is dyed by a conventional method using a general dyeing machine such as a jet dyeing machine, a Wins dyeing machine and a beam dyeing machine.

In the present invention, the dyed fabric is shuffled by a shredding machine, and if necessary, is brushed by a polisher machine and a brushing machine. Also,
Further, if necessary, after removing the hair, shredding is performed again.

[0018]

According to the method of the present invention, since the fabric on which naps are formed is fluffed and raised, the tip of the pile becomes entangled, and the entanglement is fixed by heat-treating the pile, and the entanglement of the pile in the dyeing step is fixed. Movement is prevented, and unevenness in the direction of the pile does not occur during the dyeing process. Then, the entangled portion is shuffled by a shredding machine, so that a piled blanket can be obtained.

[0019]

EXAMPLES The method of the present invention will be specifically described based on the following examples.

Example 1 Polyethylene terephthalate 75d / 36f semi-dual filament yarn was used as a front yarn, a middle yarn and a back yarn, and a tricot satin cloth was knitted by a 28 gauge tricot knitting machine. However, the combination of back, middle, and front organization was in order, and the number of courses was 67 / inch.

The front side of the obtained knitted fabric is raised three times by a needle cloth raising machine having a pile roller No. 32 / counter roller No. 34 needle cloth, and then a needle having a pile roller No. 31 / counter roller No. 27 needle cloth. It was cut and raised three times with a cloth raising machine.

Next, the surface of the napped product was subjected to a fluffing and raising treatment by using the needle cloth raising machine shown in FIG. The needle cloth raising machine is a hydraulic type needle cloth raising machine made by Nankai Iron Works, and the pile roller 31
No./counter roller No. 27 needle cloth was used. The processing conditions are as follows: drum rotation speed 110 rotations / min, pile roller rotation speed 980 rpm, roller 0 rotation speed instruction 945 rpm,
Counter pile roller rotation speed 910 rpm, cloth speed 1
It was performed at 0 m / min.

Next, heat setting was performed at 190 ° C. for 50 seconds by a pin tenter type heat setting machine. Then, the heat-set knitted fabric is used at 130 ° C. with a high-pressure jet dyeing machine using a disperse dye.
Dyeing was carried out for 60 minutes, and then it was dried at 120 ° C. for 3 minutes in a hot air type floating dryer.

The dyed knitted fabric was shuffled by a shalling machine, then brushed by passing through a brushing machine and a polisher machine, and then shredded by a shearing machine to obtain a tricot velor of Example 1.

Comparative Example 1 The same tricot satin fabric as in Example 1 was used, except for the portion of the process of Example 1 in which fluff raising is performed.
A tricot velor of Comparative Example 1 was obtained by performing the same treatment as described above.

The napped state of the product according to the method of the present invention has no unevenness in the direction of the pile as shown in FIG. 2, and the napped state of the conventional product according to the comparative example has unevenness in the direction of the pile as shown in FIG. It was a thing.

[0027]

As described above, according to the method of the present invention, the quality of the surface of the synthetic fiber napped product can be remarkably improved by utilizing the existing device. The napped product thus obtained has a good texture and a surface napped state, and is useful as an interior material for automobiles.

[Brief description of drawings]

FIG. 1 is a schematic view of a clothing raising machine that can be used in the present invention.

FIG. 2 is a cross-sectional view in a width direction of a napped state of a product according to an embodiment of the method of the present invention.

FIG. 3 is a cross-sectional view in a width direction in a napped state of a conventional product according to a comparative example.

[Procedure amendment]

[Submission date] July 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Title: Method for manufacturing synthetic fiber napped products

Claims (1)

[Claims] 1. A synthetic fiber fabric is raised and cut to raise naps, and then a woven fabric raising machine in which pile rollers and counterpile rollers are alternately arranged is fluffed and raised, followed by heat treatment. Then, a method for producing a synthetic fiber napped product, which comprises dyeing and then shulling.