JPH0892864A - Uniform dyeing of cheese - Google Patents

Abstract

PURPOSE: To facilitate the delivery and treatment of a cheese in cheese dyeing and achieve the uniform dyeing from the inner layer to the outer layer of the cheese by suppressing the escape of dyeing liquid from the yarns at the outermost layer of the cheese and enabling the sufficient contact of the dyeing liquid with the yarns. CONSTITUTION: A dyeing cheese A formed by winding yarns 2 on a bobbin 1 to the shape of a cheese is wrapped with a heat shrinking porous film 3 and the film 3 is shrunk along the outer surface of the cheese A by applying heat. The cheese A wrapped with the film 3 is placed on a spindle vertically placed on a carrier in a dyeing machine. A dyeing liquid is passed from the inside of the spindle to the outer layer of the cheese or from the outer layer of the cheese to the inside of the spindle to dye the cheese.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION There have been various methods for dyeing yarns, and one of them is a cheese dyeing process in which a yarn is wound around a dyeing bobbin to form cheese and then dyed. The present invention relates to improvements in such cheese dyeing methods.

[0002]

2. Description of the Related Art In a conventional cheese dyeing method, a cheese-shaped yarn A (hereinafter referred to as cheese) wound on a bobbin is directly attached to a spindle 13 provided on a carrier 12 in a dyeing machine 11 as shown in FIG. To the cheese outer layer side from the inside of the spindle, or conversely, from the cheese outer layer side to the inside of the spindle, through the bobbin hole and the spindle hole, and the dye solution is circulated normally and reversely for dyeing. It is carried out.

By the way, in the conventional cheese dyeing described above, after winding a predetermined amount of yarn on a dyeing bobbin, the yarn tail portion is left as it is, or the yarn of the cheese outer layer is applied by using a knitting needle or the like. It was often pinched and stopped.

[0004] In addition, depending on the type of thread, the thread in the outer layer of the rolled-up cheese may fall off, making it difficult to maintain the shape of the cheese. Therefore, cheese may be covered with a net because it is difficult to convey and handle the cheese. Partly done.

[0005]

However, as described above, it is not only troublesome to insert the portion that becomes the yarn tail into the yarn of the cheese outer layer, but also the yarn that is inserted during the dyeing comes off and the There was a problem of drifting and tangling.

[0006] Further, in terms of transportation and handling of cheese, it is difficult to cover the net with a high cost and labor.

Furthermore, in cheese dyeing, the density of the yarn in the outer layer of cheese and the resistance to passage of the dyeing liquid tend to be lower than those in the inner layer, and after dyeing from insufficient contact between the yarn and the dyeing liquid, The color of the yarn in the outermost layer becomes light, which causes a difference in color between inside and outside of one cheese.

For the same reason, adhesion of post-treatment agents such as softening agents and smoothing agents to the outer layer of cheese is also poor, which causes troubles when using the yarn in the subsequent step.

In addition, cheese composed of threads made of materials such as rayon, wool, and acrylic causes thread sinking in the dyeing bath, and the dyeing holes of the dyeing bobbin are exposed, often leading to dyeing failure. However, if the cheese needs to be packaged after being dried with a thread and then packaged while the cheese is hot, there is a problem that residual moisture condenses inside the packaging material, which causes mold and the like.

The present invention has been made to solve various problems in the conventional cheese dyeing as described above, and in particular, it finds the use of a heat shrinkable porous film to facilitate the transportation and handling of cheese, and to make the cheese outermost layer yarn. The purpose of the present invention is to prevent the dye liquor from escaping and to bring the yarn and the dye liquor into sufficient contact to achieve uniform dyeing of the inner and outer layers of cheese.

[0011]

That is, the method of the present invention for achieving the above object is to wrap the dyeing cheese in a heat-shrinkable porous film, and after heat is applied to shrink the film along the contour of the cheese. The cheese wrapped in the film is loaded on a spindle erected on a carrier in a dyeing machine, and dyeing liquid is alternately supplied and distributed from inside and outside the cheese layer for dyeing.

As the heat-shrinkable porous film, known films such as polypropylene and polyethylene are used.
A large number of small holes are formed in these for circulation of the dye solution.

[0013]

[Operation] After winding the yarn on the dyeing bobbin, wrapping it with a heat-shrinkable porous film and applying heat to shrink it,
The film is fixed along the outline of the cheese. Therefore, the thread tail can be fixed as it is without particularly treating the thread tail, and the outermost thread of the cheese is also fixed.

Therefore, the shape of the cheese can be surely maintained, the cheese can be transported and handled very easily, and the cheese is less likely to become dirty.

Further, at the time of dyeing, the porous film becomes a resistor outside the outermost cheese layer, so that the dye liquor flowing from the cheese inner layer side to the cheese outer layer side is prevented from passing through as compared with the case where there is no film. Sufficient contact with the dye liquor is carried out to prevent the color of the yarn of the outermost cheese layer from becoming light, and to make the dyeing of the inner and outer layers uniform.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 (a) to 1 (d) are schematic views sequentially showing the dyeing method of the present invention. First, the yarn 2 is wound up on the dyeing bobbin 1 by a known winding means to form a cheese shape (a). ) The cheese A for dyeing shown in the figure is obtained.

On the other hand, a heat-shrinkable cylindrical film 3 having a larger diameter than that of the cheese A and having a large number of small holes 4 formed on the entire surface is separately prepared as shown in FIG. The tubular film 3 is arranged on the outer periphery of the cheese A as shown in FIG. 3C, and the cheese A is wrapped in the tubular film 3.

Therefore, the heat-shrinkable porous film 3 needs to have a sufficient margin for wrapping the dyeing cheese A on both the upper and lower sides and the side surfaces. However, it goes without saying that it is meaningless to make it too large, and that after heat shrinkage, the cheese A may shrink to such an extent that it substantially adheres to the outer surface of the cheese A.

Examples of the heat-shrinkable film 3 include commercially available polypropylene film, polyethylene film and the like, and the small holes 4 are formed on the entire surface by known perforating means. The small holes 4 may be arranged uniformly over the entire surface, or may be arranged in a larger number in the upper and lower portions of the cheese A.

Thus, when the cheese A is wrapped in the tubular film 3 as described above, heat is then applied to the cheese A wrapped in the film 3 by the hot air applying means 5 or the like, so that the tubular film 3 outside the cheese A is formed. Contracts and is fixed along the outer shape of the cheese A, and is in a state of being in close contact with the cheese A as shown in FIG.

The heating is not limited to the above-mentioned application of hot air, but may be left in a heating atmosphere.

The cheese A wrapped in the shrunk film 3 in this way has its shape retained by the film 3, and even when the thread is made of wool, rayon, acrylic, or the like, the thread is almost not sunk. Absent.

The dyeing cheese A wrapped with the film 3 contracted in this way is then subjected to cheese dyeing, and the known dyeing machine shown in FIG. 2 is used for cheese dyeing.

That is, the packaged cheese A is loaded through a spacer 14 onto a spindle 13 provided upright on a carrier 12 in a dyeing machine 11, and from the spindle to the cheese outer layer side, and conversely from the cheese outer layer side. The cheese A is dyed by further circulating the dye liquor into the spindle 13 alternately in the forward and reverse directions.

At this time, the shrinkage film 3 that wraps the cheese A in the dyeing solution functions as a resistor to prevent the dyeing solution from coming off early, and the dyeing solution is sufficiently contacted with the yarn of the outermost layer of the cheese A. Prevents the dyeing of the outermost layer of cheese from becoming thin.

It should be noted that, as for cheese wrapping with a shrinking film, it is usual to use a heat shrinkable film suitable for one cheese, but it is necessary to wrap a plurality of cheeses with a shrinking film at the same time. Of course, it is possible without departing from the object of the present invention.

[0028]

INDUSTRIAL APPLICABILITY As described above, the present invention is a method of wrapping a dyeing cheese with a porous film that shrinks, shrinking the porous film by applying heat, fixing it to cheese and storing it in a cheese dyeing machine and dyeing it. Therefore, various drawbacks in conventional cheese dyeing are improved and the following respective effects are exhibited.

(A) Immediately after winding the yarn around the dyeing bobbin, the yarn is wrapped in a film and contracted by heat, so that the yarn tail can be fixed as it is without any special treatment, and the yarn tail is drifted in the bath. The occurrence of entanglement can be prevented. (B) Since the cheese is fixed by the shrinkable film, the shape of the cheese can be maintained, the sinking of the thread can be prevented, the cheese can be transported and handled easily, and stains can be prevented. (C) The contracted porous film is added to the outside of the cheese to become a resistor, which prevents the dye liquor from escaping from the yarn of the outermost cheese layer, and allows the yarn and the dye liquor to make sufficient contact, so that the cheese outermost layer It is possible to prevent the color of the yarn from becoming thin, and to make the dyeing of the inner and outer yarn layers uniform. For the same reason, it is possible to make uniform the adhesion of post-treatment agents such as softening agents and leveling agents. (D) It is also advantageous that it is not necessary to carry out a packaging process after drying, even if the product needs to be packaged after being dried by a yarn, it can be packaged in a film immediately after winding the yarn, dyed as it is, and dried. . Further, as compared with the conventional netting, it is easy to wrap with a film, which is less troublesome and economical.

[Brief description of drawings]

1 shows a known dyeing method according to the present invention, (a) is a cheese for dyeing, (b) is a film that wraps the cheese,
(C) shows the film wrapped with dyeing cheese,
(D) shows the state where the film is contracted by hot air or the like.

FIG. 2 is a schematic view showing an aspect in which the packaged cheese is loaded into a dyeing machine and dyed.

[Explanation of symbols]

 A cheese for dyeing 1 bobbin for dyeing 2 yarn 3 film that shrinks 4 small holes in the film 5 hot air applying means 11 dyeing machine 12 carrier 13 spindle

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[Procedure amendment]

[Submission date] January 11, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

As the heat-shrinkable porous film, known films such as polypropylene and polyethylene are used.
These are provided with a large number of small holes of 0.3 mmφ to 3.0 mmφ for circulation of the dye liquor.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

On the other hand, the heat-shrinkable tubular film 3 having a larger diameter than the outer diameter of the cheese A and having a large number of small holes 4 of 0.3 mmφ to 3.0 mmφ formed on the entire surface is shown in FIG. The tubular film 3 is prepared as described above, and the cheese A is wrapped with the tubular film 3 by arranging the tubular film 3 on the outer periphery of the cheese A as shown in FIG.

Claims (1)

[Claims] 1. A bobbin is wrapped with a cheese-shaped dyeing cheese wrapped in a heat-shrinkable porous film, heated to shrink the film along the outer shape of the cheese, and then wrapped with the film. The cheese is loaded on a spindle erected on a carrier in the dyeing machine, to the cheese outer layer side from the spindle, and the dyeing solution is passed from the cheese outer layer side to the spindle inward direction, which is characterized in that the cheese is dyed. Uniform dyeing method.