JPH0649026B2 - Manufacturing method of mop cord yarn that prevents fraying - Google Patents

Description

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 is used for repeated cleaning and washing operations. The present invention also relates to a method for manufacturing a mop cord yarn in which the twist and the wear of the twisted yarn are eliminated even when attached.

2. Description of the Related Art Conventionally, as a cleaning mop cord yarn, a twisted yarn obtained by twisting a plurality of thick yarns (referred to as raw yarns) has been generally used. In the form of the cleaning mop, the end of the mop cord yarn is free from the twisted yarn, and the twisted yarn is unwound from the cut end, resulting in fraying and significant wear of the yarn. In particular, a cleaning mop is subjected to severe usage conditions such as rubbing against the floor surface, and is subjected to severe washing conditions even after use, so that no fraying or wear from the end of the mop cord yarn occurs. It becomes significant and eventually becomes unusable. From this, it is possible to prevent the twisting back from the cut end of the mop cord yarn,
It is important for maintaining the quality and life of the mop cord yarn for a long time.

As a method for producing mop cord yarns that prevent fraying, which has been done in the past, the cotton yarns are shrunk by immersing the cotton yarns in a caustic solution in a twisted state (generally, mercerizing, silket finishing and It is said)
There is a method for preventing the twisting of the twisted yarn, but the twisting prevention processing by this method is limited to cotton or a blended product with cotton and is not suitable for synthetic fibers and semi-synthetic fibers.

In addition, attempts have been made to prevent twisting and damage of twisted yarns by treating a plurality of twisted yarns of mop cord yarn using heat fusion of a resin.
Japanese Patent Laid-Open No. 3-13907 discloses preventing twisting of a twisted yarn by sprinkling resin particles having a low melting point, such as polyethylene, on the surface of a twisted yarn for a mop, and performing fusion treatment in the form of independent point adhesion. Is listed. In addition, JP-A-57
Japanese Patent Publication No. 177729 discloses a twisted yarn composed of a plurality of roving raw yarns and a core yarn of a low melting point synthetic fiber such as polypropylene, and the twisted yarns are heat-treated in a compressed state while being fed in a tensioned state to bond the respective yarns. A method of welding a core yarn to the surface is described. Further, Japanese Patent Laid-Open No. 58-163745 discloses that
A method is described in which a cotton yarn and a heat-adhesive synthetic filament yarn such as polyethylene are entangled and treated in a pressure vessel under heating and pressurization and in the presence of steam to melt the filament yarn.

However, in these anti-raveling methods, since polyethylene and polypropylene used for fusion bonding have oil adsorbability, oil stains are attached and accumulated on the heat-bonded portion, and when repeatedly used and washed several times, This oil stain causes a short life of the mop. Further, the temperature of the fusion treatment is still quite high, the energy cost for the heat treatment is high, and there is a drawback that the mop cord fiber is easily deteriorated by heat.

OBJECTS OF THE INVENTION Therefore, an object of the present invention is to provide a method for producing a mop cord yarn in which the twisting and the abrasion of the twisted yarn are prevented and the adhesion of oil stains is eliminated.

Another object of the present invention is that the fraying and wear of the twisted yarn is facilitated without compromising the softness, freedom and feel of the mop cord yarn and without the harsh conditions of damaging the fiber. It is to provide a manufacturing method of mop cord yarn.

According to the present invention, a plurality of mop cord raw yarns made of natural fibers, synthetic fibers or a mixture thereof and low melting point copolyamide filament yarns having a wet heat melting temperature of 100 ° C. or less are twisted together to form 70 The twisted yarn is immersed in a hot water bath at a temperature of from 100 ° C. to 100 ° C. and at a temperature above the wet heat melting temperature of the low-melting point copolyamide filament yarn, and the low-melting point copolyamide filaments are mutually melted. Provided is a method for producing a mop cord yarn for use by impregnating a dust collecting / holding oil agent, which is characterized by fixing through a melt of filaments.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to its preferable modes.

Material In the present invention, as the mop cord raw yarn, any mop cord raw yarn made of natural fiber, synthetic fiber or a mixture thereof is used. Examples of the fibers constituting the raw yarn include cellulosic fibers such as cotton, rayon, and acetate fibers, and synthetic fibers such as polyvinyl alcohol fibers, nylon fibers, acrylic fibers, polyester fibers, and polyvinyl chloride fibers. Of course, these raw yarns may be a single spun yarn or a mixed spun yarn of two or more kinds. These raw yarns may be spun yarns of natural or synthetic staple fibers or, in the case of synthetic fibers, multifilament yarns.

The fineness of the mop cord yarn is 500 to 1000
It is preferably 0 denier. Of course, this raw yarn may be a single yarn, or may be a plurality of compound yarns or twisted yarns of the same type or different types. The fineness of the cotton yarn is generally represented by a count, and the count and denier are converted by the following formula.

Count = 5.315 / denier.

Fibers suitable for cleaning workability and stain resistance are in the order of importance,
Cotton yarn, nylon fiber, acrylic fiber.

In the present invention, the above-described mop cord raw yarn is a low melting point copolyamide filament, that is, a low melting point nylon filament that is bonded using a heat-adhesive nylon filament, and a plurality of types of nylon forming monomers, that is, Copolymerized nylons composed of a combination of an ω-aminocarboxylic acid component or a dicarboxylic acid component and a diamine component, the melting point of which is generally in the range of 80 to 140 ° C. One of the salient features is the use of low-melting copolyamide filaments that melt at temperatures well below the thermal conditions, generally 20 to 40 ° C lower, i.e. below 100 ° C. Through 100
Melts in a water bath at a temperature of ° C. The present invention utilizes this property of the low melting point nylon filament to fix the twist in a mild condition without damaging the fibers of the mop cord yarn and without impairing its flexibility, freedom and texture. It is something to do. Low melting nylon filaments are also generally available in the form of low fineness multifilament yarns, which finenesses are generally in the range of 30 to 300 denier.

Suitable low melting point nylon filament yarns are available from Toray Co., Ltd. under the trade name Elder and Unitika Co. under the trade name Flor-M.

Manufacturing Method According to the present invention, the above-described mop cord raw yarn is twisted with the heat-adhesive nylon filament yarn, whereby the heat-adhesive nylon filament yarn is entangled with the mop cord raw yarn.

At this time, the mop cord raw yarn is applied 80 to 180 times /
m, especially 100 to 150 times / m, and the twist direction is opposite to that of the lower twist, and is less than the number of twists of the lower twist and 50 to 150 times / m, especially 70 to 130 times / m It is preferable to have the number of times of twisting and the upper twisting. The number of twists of the upper twist is 10 to 80% less than the number of twists of the lower twist, which is advantageous for fixing the twists in connection with the fusion treatment described later.

If the number of twists of the upper twist and the lower twist is less than the above range, the fixation of the twist is insufficient even when it is applied to the treatment described later, and the tendency of the yarn to be frayed or worn during repeated use is increased. . If 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 will be lost, and the dust collecting / holding property will be deteriorated, and the cleaning workability will be deteriorated, and the texture will be poor. Also tends to decline.

The ratio of the mop cord raw yarn to the low melting point nylon filament can be changed over a wide range, but the fineness of the former
It is preferable that the compounding ratio represented by d ₂ / d ₁ × 100 is in the range of 0.1 to 15%, particularly 0.1 to 10%, where d ₁ and the fineness of the latter are d ₂ . That is, when the amount of the low melting point nylon filament used is less than the above range, the twist is not sufficiently fixed, and when it is more than the above range, the flexibility of the yarn is lost and the cost is increased.

The plurality of mop cord raw yarns and the low melting point polyamide filament yarn can be twisted together by various methods within a range satisfying the above-mentioned restrictions. For example, it is possible to perform twisting so that the low melting point polyamide filament yarn is located at the center of a plurality of mop cord raw yarns, and the low melting point nylon filament yarn is the core and the mop cord raw yarn covers the mop cord raw yarn in the form of a sheath. It may be twisted yarn. It is desirable that the number of the mop cord raw yarns is generally 2 to 10, especially 2 to 7, which is a small number.

In a particularly preferred embodiment of the present invention, the low melting point polyamide filament yarn is a multi-filament yarn having a twist number of 5 to 30 in a direction opposite to the twist of the twist yarn and having a twist number substantially corresponding to the twist number of the twist. To use. When such a low melting point nylon multifilament yarn is used, untwisting of the multifilament occurs during twisting, and the low melting point nylon filament is distributed over a relatively wide portion in the twisted yarn, and each element yarn is It becomes possible to join effectively.

According to the invention, the twisted yarn thus produced is treated in a bath maintained at a temperature above the moist heat melting point of the low melting point nylon filament and the filaments are fused with a low melting point nylon located between them. To wear.

As previously mentioned, low melting point nylons have a much lower melting temperature when wet than when dry. In the present invention, these characteristics are utilized to perform the fusion treatment in the bath.

As the bath, a water bath is usually used, but for example, a dyeing bath may be used to perform the above-mentioned treatment simultaneously with dyeing. The temperature of the bath may generally be in the range of 70 to 100 ° C., but it is also possible to add an inorganic salt or a water-soluble organic compound to the bath to improve the boiling point of the liquid and to carry out the treatment at a higher temperature. If a pressure-resistant container is used as the container for containing the bath, it is possible to process at a higher temperature.

The treatment of the twisted yarn in the bath can be performed by continuously passing the twisted yarn through a bath such as a J-box, or by immersing the twisted yarn cassette, corn or the like in the bath. . The dipping time in the bath may be such that fusion can be surely performed, and generally a treatment for several minutes to several tens of minutes is sufficient.

The mop-cord yarn according to the present invention can of course be subjected to any known process such as dyeing, finishing and oiling.

The mop cord yarn and the function and effect of the mop cord yarn according to the present invention are such that the mop cord yarns are fused at a number of points with the low melting point nylon existing between them, and the twist is surely fixed and the flexibility that the mop cord yarn originally has, It has the advantage that it is done without compromising freedom and texture.

Moreover, in the present invention, since the fusion treatment is performed in a hot water bath, not only is the operation extremely easy,
There is also an advantage that the treatment conditions are mild, the fibers of the mop cord raw yarn are not damaged, and the excellent strength of the mop cord raw yarn is maintained as it is.

According to the present invention, the obtained mop cord thread is sewn to a base fabric such as a canvas or integrally sewn by flanging or the like, and the cords are cut into a uniform length to be used as a cleaning mop. . Of course, the order may be reversed, and the above-described processing may be performed on the mop code manufactured in the shape of the mop.

This mop may be impregnated with a dust collecting / holding oil agent known per se to form a rental dust control mop used in a so-called dry state.

Examples The invention is illustrated by the following examples.

Example 1 and Comparative Examples 1 and 2. 2nd cotton thread and 2 low melting point copolymer nylon multifilament yarns (100d / 12 filament, Z twist, number of twists 35T / m) with dry heat melting temperature of about 100 ° C and wet heat melting temperature of about 80 ° C And were supplied to a yarn twisting machine, and two twisted yarns having a lower twist of Z120 T / m and an upper twist of S154 T / m were manufactured.

This twisted yarn case is strained in a hot water bath at about 90 ° C for about 15 minutes.
It was dipped for a minute and subjected to a fusion treatment. This cord thread was cut into a length of 20 cm, and a large number of rows were sewn on a cloth tape to manufacture a mop.

For comparison, a double twist yarn of a second cotton yarn was produced in the same manner as above except that the low melting point nylon multifilament yarn was not used. A fine powder of polyethylene having a softening point of 84 ° C. was adhered to the twisted yarn by 10% based on the weight of the yarn and treated at 200 ° C. for 1 minute in an electric heating furnace to produce a fusion treated yarn. Similarly, from the mop cord yarn obtained in this way,
A mop (Comparative Example 1) was manufactured.

A mop (Comparative Example 2) was produced in the same manner by using a cotton twisted yarn not subjected to the fusion treatment with the fine polyethylene powder as a mop cord yarn.

The following oil impregnation treatment was performed on these mops.

The following oil agent composition: Liquid paraffin 40 parts Alkylbenzene oil 53 parts Surfactant 3 parts A mixture of 70% and C ₁₇ H ₃₃ CONHCH ₂ CH ₂ NH (CH ₂ CH ₂ O) ₃ H 30% was prepared.

The treated mop of Example 1 and the mops of Comparative Examples 1 and 2 were respectively immersed in a water bath at 60 ° C. so that the bath ratio was 10: 1, and the pH of the bath was adjusted to 4.5.

The above oil agent composition was added to this bath so that the content of the oil agent was 15% to form an emulsion of oil agent.

With the passage of time, the oil composition was exhausted to the mop pile yarns, and the liquid became transparent in all the mop pile yarns.

After the oil-impregnated mop thus obtained is dehydrated and dried,
The following tests were carried out.

(1) Cleaning workability test These mops were attached to the mat holding tool, and five panelists actually performed cleaning of the floor surface, and the ease of cleaning with the mop and the texture of the mop cord were evaluated. The test was performed with a score of 5, Good 3, and Good 1, and the results are shown as a total value.

(2) Dust collecting property One piece of the above mop and two times the weight of the silica sand powder are placed in a plastic container, covered with a lid and shaken well to evenly attach the silica sand powder to the cloth. Then, a certain amount of mechanical vibration is applied to this to shake off the silica sand powder that is weakly attached to the cloth. The weight increase rate before and after this operation was defined as the dust collection rate.

That is, Here, a: cloth weight before test b: weight after test (3) Mop cord yarn abrasion test Repeatedly sweeping each mop along the tatami mat until sweeping operation becomes difficult due to pile loss. The number of sweeps was calculated.

(4) Durability test The above mop was subjected to a cycle of cleaning, washing for 4 weeks, and regenerating treatment by oil impregnation for 10 times to evaluate the occurrence of fray of mop cord yarn and the degree of recontamination of mop cord yarn. .

The results obtained are shown in Table 1 below.

The above results indicate that, in the mop cord yarn according to the method of the present invention, the plurality of raw yarns are fused at a large number of points in contact with each other, so that the cleaning workability, the feel and the feeling are exactly the same as those of the untreated mop cord yarn. It shows that it has a dust-collecting property, has no oil stain property as compared with the conventional fusion-bonded yarn, and has a significant effect in terms of preventing fraying and wear.

Claims (3)

[Claims] 1. A plurality of mop cord raw yarns made of natural fibers, synthetic fibers or a mixture thereof, and a low melting point copolyamide filament yarn having a wet heat melting temperature of 100 ° C. or less are twisted together to form 70 to 100 ° C. The melt of the low-melting copolyamide filaments is obtained by immersing the twisted yarn in a hot water bath maintained at a temperature that is equal to or higher than the wet heat melting temperature of the low-melting copolyamide filament yarns, and the raw yarns for mop cord are mutually melted. A method for producing a mop cord yarn for use by impregnating with a dust collecting / holding oil agent, which prevents fraying, characterized by being fixed through 2. The method according to claim 1, wherein the mop cord yarn comprises polyamide fibers. 3. The method according to claim 1, wherein the yarn for the mop cord is a cotton yarn.