JPH06330431A - Production of mop cord yarn resistive to fray - Google Patents

Abstract

PURPOSE:To produce a mop cord yarn being resistant to fray or wear by using a hot melt monofilament yarn as the core, intertwisting plural single yarns therewith and subsequently applying a high-temperature steaming treatment thereto so as to mutually fusion-bond the single yarns through the above- mentioned monofilament yarn. CONSTITUTION:A copolyamide-based monofilament hot melt yarn having a high melting point higher than 100 deg.C is used as the core and plural single yarns for a mop cord, composed of cotton, nylon, acryl, rayon or polyvinyl alcohol- based fiber are intertwisted therewith. Thereby, a twisted yarn is produced and a skein is formed therefrom. The resultant skein is then suspended in a steamer and heat treated under a condition in which adhesion of drain to the skein can be prevented by blowing a high-temperature steam thereinto. Thereby, the above-mentioned sing yarns are mutually fusion-bonded through the above- mentioned hot melt monofilament, thus producing the objective mop cord yarn.

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 mop cord yarn in which fraying is prevented, and more particularly, it is used for a cleaning mop and subjected to repeated cleaning and washing operations. Also in the case, the present invention relates to a method for producing a mop cord yarn in which the twisting of the twisted yarn is prevented and the abrasion of the twisted yarn is prevented with a small number of steps with high productivity.

[0002]

2. Description of the Related Art Conventionally, as a mop cord thread for cleaning,
A twisted yarn obtained by twisting a plurality of original yarns is generally used. In the form of the cleaning mop, the end of the mop cord yarn is cut and the twisted yarn is in a free state, and the twist is unwound from this cutting end, causing fraying and damage to the yarn. In particular, the mop for cleaning is subjected to severe usage conditions such as rubbing against the floor surface and is subjected to severe washing conditions even after use. Attrition will be significant, eventually leading to unusable conditions. For this reason, it is important to prevent the twist from returning from the cut end of the mop cord yarn in order to prolong the quality and life of the mop cord yarn.

Conventionally, as a mop cord yarn having a fixed twist, a yarn produced by twisting a plurality of raw yarns and a low-melting thermo-adhesive filament, and heat-treating the same at the same time as dyeing is used. Has been done.

[0004]

However, the mop used in the rental cycle is collected after being used for a certain period of time, is subjected to cleaning with a cleaning solution of high temperature and high alkali, and is then reused. . Therefore, it is difficult to effectively avoid fraying and the like in the washing step in the mop cord yarn utilizing the above-mentioned heat fusion of the low-melting-point thermo-adhesive filament, and there is still room for improvement.

It is clear that the above problems can be solved by using a high melting point thermoadhesive filament. However, in this case, since it is necessary to perform the heat treatment at a high temperature of 100 ° C. or higher, the heat treatment cannot be performed at the same time as the dyeing. For example, a high temperature and high pressure container provided separately from the dyeing bath is used. Must be heat treated by steam etc. Therefore, the number of steps is larger than that in the case of using a low-melting-point thermo-adhesive filament, and a cost disadvantage cannot be avoided.

[0006] Therefore, an object of the present invention is to provide a method for extremely easily producing a fray-preventing mop cord yarn by using a heat-melting filament having a high melting point.

[0007]

According to the present invention, a plurality of single yarns are twisted with a filament yarn for fusion as a core.
In a method for producing a fray-preventing mop cord yarn, which comprises heat-treating a formed twisted yarn to fuse single yarns to each other with the filament yarn, as a filament yarn for fusing,
A method is provided, which comprises using a copolyamide-based filament having a melting point higher than 100 ° C., and heat-treating the twisted yarn under the conditions in which high-temperature steam is blown into a steamer at normal pressure and drain is not attached to the twisted yarn. To be done.

[0008]

In the present invention, since the heat treatment for fusing is performed by blowing high-temperature steam into the steamer at atmospheric pressure, a dyeing kettle can be used as the steamer, and the twisted yarn is moved after the heat treatment. It is possible to perform the dyeing as it is without causing it. Therefore, the heat treatment and the dyeing can be continuously performed, and the apparatus cost can be reduced.

It is important that the heat treatment is performed so that the drain does not adhere to the twisted yarn. That is, when the drain adheres, a temperature gradient is created in the twisted yarn, and it becomes difficult to perform the heat fusion uniformly and completely. Such heat treatment
This can be easily performed by providing a mountain-shaped lid on the steamer (dying kettle). That is, if such a lid is provided,
Since the drain drops from the peripheral edge of the lid, the drain is effectively prevented from adhering to the twisted yarn in the steamer.

[0010]

Preferred Embodiment of the Invention

(Material) In the present invention, the single yarn twisted with the filament yarn for fusing is a mop cord raw yarn, and examples of the fiber constituting the raw yarn include cellulosic fibers such as cotton, rayon, and acetate fibers, and polyvinyl. Synthetic fibers such as alcohol fibers, nylon fibers, acrylic fibers, polyester fibers and polyvinyl chloride fibers can be mentioned. Of course, these raw yarns may be a single spun yarn or a mixed spun yarn of two or more kinds. Further, spun yarn of natural or synthetic staple fiber may be used, and in the case of synthetic fiber, multifilament yarn may be used.

In the present invention, cotton fibers, nylon fibers, acrylic fibers, rayon fibers, and polyvinyl alcohol fibers are particularly preferable in terms of cleaning workability and stain resistance.
The raw yarn preferably has a fineness of 200 to 10,000 denier.

The high melting point copolyamide filament yarn used as a core for twisting and fixing the mop cord raw yarn has a melting point higher than 100 ° C., and particularly 1
Copolymerized polyamides having a melting point of 00 to 130 ° C. and composed of a plurality of types of polyamide-forming monomers, that is, a combination of an ω-aminocarboxylic acid component or a dicarboxylic acid component and a diamine component. The twisted yarn fused and fixed by the heat treatment using such a high-melting point copolyamide-based filament yarn effectively avoids fraying from the cutting end even when subjected to washing at a high temperature, for example. .

This high melting point copolyamide filament yarn is also generally available in the form of a multifilament yarn having a low fineness, and the fineness thereof is generally in the range of 30 to 300 denier. A suitable high melting point copolyamide filament yarn is available from Unitika Ltd. under the tradename Flor # 1000.

(Manufacture of Twisted Yarn) Referring to FIG. 1 showing each step in the manufacturing method of the present invention, according to the present invention, first, the above-mentioned high melting point copolyamide filament yarn 1 is used as a core to form the mop cord base yarn 2. The twisted yarn 3 is formed by twisting.

At this time, the original yarn for mop cord 2 is twisted 80 to 800 times / m, particularly 100 to 600 times / m, and the twisting direction is opposite to that of the lower twist, and the twisting number of the lower twist is Less than and 50 to 300 times / m, especially 70
It is preferable to have a twist number of from 200 to 200 twists / m. The number of times of upper twist is 10 to 80 less than the number of times of lower twist.
It is advantageous for fixing the twist.

When the number of twists of the upper twist and the lower twist is less than the above range, the twist is not sufficiently fixed, and the tendency of the yarn to be frayed or worn during repeated use is increased. Further, when the number of twists of the upper twist and the lower twist is more than the above range, the flexibility and freedom of the mop cord are lost, the dust collecting / holding property is deteriorated, and the cleaning workability is deteriorated. The texture also tends to deteriorate.

The use ratio of the mop cord raw yarn 2 and the high melting point copolyamide filament yarn 1 can be changed over a wide range, but the former fineness is d ₁ and the latter fineness is d _2.
It is preferable that the compounding property represented by d ₂ / d ₁ × 100 is in the range of 0.1 to 15%, particularly 0.1 to 10%. That is, if the amount of the filament yarn 1 that is a heat-sealing yarn is less than the above range, the twist is not sufficiently fixed, and if it is more than the above range, the flexibility of the yarn is lost.
In addition, the cost becomes high. In addition, the mop cord yarn 2 is
Generally, it is desirable to use a small number of 2 to 20, especially 2 to 15.

In a particularly preferred embodiment of the present invention, as the high melting point copolyamide filament yarn 1, the number of filaments having the number of twists in the direction opposite to the twist of the twisted yarn and substantially corresponding to the number of twists of the twist is 5 to. Forty multifilament yarns are used. When such a filament yarn is used as the heat-sealing yarn, it is untwisted with the multifilament at the time of twisting, and the heat-sealing yarn is distributed over a relatively wide portion in the twisted yarn, and each yarn and a large number of points are distributed. It becomes possible to join effectively.

(Twist fixing process) According to the present invention, the twisted yarn 3 thus produced is heat-treated to heat-bond the original yarn 2 and the filament yarn.

In this heat treatment, first, the twisted yarn 3 is wound up to form a case 4, the case 4 is suspended in a suitable frame 5, and the empty dyeing kettle 6 is set for each frame. Then, a lid 7 is provided on the dyeing kettle 6 and heat treatment is performed by blowing in high-temperature high-pressure steam having a temperature higher than the melting point of the filament yarn 1 and about 100 ° C. or higher (for example, about 105 ° C.). What is important here is to prevent the drain from dripping and sticking to the twisted yarn 3.
For this reason, the inside of the dyeing kettle 6 is not sealed and kept at normal pressure. That is, when the drainage adheres to the twisted yarn 3 (cassette 4), temperature unevenness occurs, which makes it difficult to perform uniform heat treatment. If the pressure is not kept at normal pressure, the drain will be dripped drastically and it will be virtually impossible to avoid the adhesion of the drain.

Maintaining the inside of the dyeing kettle 6 at normal pressure can be easily performed by forming a gap between the dyeing kettle 6 and the lid 7 so that the inside of the dyeing kettle 6 is not sealed. You can That is, since water vapor is blown out through this gap, the dyeing kettle 6 is kept at normal pressure.

In order to prevent the drain from adhering, it is preferable that the shape of the lid 7 is mountain-shaped as shown in the figure, and it is particularly preferable that the angle α is set to about 105 degrees. . By using the lid 7 having such a shape, the drain attached to the lid 7 is transmitted to the edge of the lid 7 without dripping.
Drain is effectively prevented from adhering to it.

After the heat treatment by blowing of steam is completed, the lid 7 is removed if necessary, and ordinary dyeing is performed as it is. In this case, the dyeing is preferably performed by a so-called rotary back method. That is, the dyeing hem divided into two tanks
By using K.K., the cassette 4 is held in one of the tanks, and the dyeing solution is circulated between these tanks for dyeing, a mop cord yarn having a bulky feel can be obtained.

After the completion of dyeing, the case 4 is taken out and dried if necessary, and rolled into a cone or cheese to obtain a product. Of course, it is possible to carry out any processing such as finishing and oiling if necessary.

[0025]

According to the present invention, since the dyeing pan also serves as a heat treatment device, the cost of the device is reduced and the number of times the cassette is moved and set is also reduced. It is extremely advantageous.

[Brief description of drawings]

FIG. 1 is a diagram showing a manufacturing process of a mop cord yarn of the present invention.

[Explanation of Codes] 1: High-melting point copolyamide filament yarn 2: Original yarn for mop cord 3: Twisted yarn 4: Kasetsu 6: Dyeing hem

Claims (1)

[Claims] 1. A fray-preventing mop cord yarn, which comprises twisting a plurality of single yarns with a filament yarn for fusion as a core, and heat-treating the formed twisted yarns to fuse the single yarns with each other. In the method, a copolyamide filament having a melting point higher than 100 ° C. is used as the filament yarn for fusing, and the heat treatment of the twisted yarn is performed under the condition that the high temperature steam is blown into the steamer under normal pressure and the drain is not attached to the twisted yarn. A method characterized by the following.