JPS61100223A - Production of mop code yarn prevented from fray - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing motsupu cord yarn that is prevented from fraying, and more particularly, it is used for cleaning motsupu applications and is suitable for repeated cleaning and washing operations. The present invention relates to a method for manufacturing motsu cord yarn which eliminates fraying and wear and tear of the twisted yarn even when subjected to drying.

BACKGROUND ART Conventionally, as a mop cord yarn for cleaning, a twisted yarn made by twisting together a plurality of thick yarns (referred to as plain yarns) has generally been used. In the form of a cleaning mop, the ends of the mop cord threads are free after the twisted threads are cut, and the twists are untwisted from the cut ends, causing fraying and wear and tear of the threads. In particular, motsupu for cleaning is subjected to harsh usage conditions such as rubbing against the floor surface, and is also subjected to harsh washing conditions after use, so fraying and wear from the motsupu cord thread ends are less likely. The damage becomes severe and eventually becomes unusable. From this, it is possible to prevent the untwisting of the Motsupu cord yarn from the cut end.
This is important in maintaining the quality and longevity of Motsupu hood yarn.

In the past, the method of manufacturing cord yarn for motsupu that prevents fraying involves shrinking the cotton yarn by immersing it in caustic alkaline solution after twisting multiple cotton yarns together (generally mercerized or mercerized). It is said)
There is a method of preventing twisting of twisted yarns by making the yarn twist, but this method is limited to cotton or blended fabrics with cotton, and is not suitable for synthetic fibers and semi-synthetic fibers.

In addition, attempts have already been made to treat multiple strands of Motsupu cord yarn using thermal fusion of resin to prevent fraying and wear and tear of the strands.
Publication No. 3-13907 discloses that fine particles of a low melting point resin such as polyethylene are dotted on the surface of the twisted yarn for motsupu, and fusing treatment is performed in the form of independent point adhesion to prevent the twisted yarn from fraying. is listed. In addition, JP-A-57
Publication No. 177729 discloses that a twisted yarn consisting of a plurality of roving yarns and a core yarn of a low-melting synthetic fiber such as polypropylene is made, and the twisted yarn is fed under tension and heat treated in a compressed state to join each yarn. A method for welding the core yarn to the surface is described. Furthermore, JP-A No. 58-166745 discloses that cotton yarn and heat-adhesive synthetic filament yarn such as polyethylene are intertwined and treated in a pressure vessel under heat and pressure and in the presence of water vapor to melt the filament yarn. The method is described.

However, in these fraying prevention methods, since the polyethylene and polypropylene used for fusing have oil adsorption properties, oil stains accumulate on the heat bonded parts, and after repeated use and washing several times, This oil stain has the disadvantage of shortening the service life of the mop. In addition, the temperature of the fusing process is still quite high, the energy cost for heat treatment is high, and there are also disadvantages in that the motsu cord fibers tend to deteriorate due to heat.

OBJECTS OF THE INVENTION Accordingly, an object of the present invention is to provide a method for manufacturing motsu cord yarn that prevents fraying and wear of the twisted yarns and also eliminates the attachment of oil stains and the like.

Another object of the present invention is that fraying and wear of the twisted yarns can be easily carried out without impairing the flexibility, freedom and hand of the motsu cord yarns and without using harsh conditions that would damage the fibers. To provide a manufacturing method for Motsupu cord yarn.

Structure of the Invention According to the present invention, a plurality of threads for motsu cord made of natural fibers, synthetic fibers, or a mixture thereof and a heat-adhesive nylon filament thread are twisted together, and a heat-adhesive nylon filament thread is twisted at a temperature equal to or higher than the moist heat melting temperature of the adhesive nylon filament thread. A method for producing a motsupu hood yarn that prevents fraying, which is characterized in that the twisted yarn is immersed in a hot water bath maintained at a temperature of provided.

Preferred Embodiments of the Invention The preferred embodiments of the present invention will be explained in detail below.

Material In the present invention, any yarn for motsu cord consisting of natural fibers, synthetic fibers, or a mixture thereof is used as the yarn for motsu cord. The fibers that make up the yarn include cellulose fibers such as cotton, rayon, and acetate fibers, polyvinyl alcohol fibers, nylon fibers,
Examples include synthetic fibers such as acrylic fibers, polyester fibers, and polyvinyl chloride fibers. Of course, these threads may be a single spun thread, or may be a blend of two or more kinds of threads. These yarns may be spun yarns of natural or synthetic staple fibers, or may be multifilament yarns in the case of synthetic fibers.

The fineness of Motup cord thread is 500 to 1000.
Preferably, it has a denier of 0. Of course, this thread may be a single thread, or may be a plurality of gold threads or twisted threads of the same or different types. The fineness of cotton yarn is generally expressed by the number, and the number and denier are converted using the following formula.

Count = 5.315/denier.

The preferred fibers in terms of cleaning workability and stain resistance are listed in order of importance:
Cotton yarn, nylon fiber, acrylic fiber O In the present invention, the above-mentioned yarn for motsu cord is joined using a heat-adhesive nylon filament, that is, a low melting point nylon filament. The low melting point nylon filament is a copolymerized nylon consisting of a combination of multiple types of nylon-forming monomers, namely an ω-aminocarboxylic acid component or a dicarboxylic acid component and a diamine component, and generally has a melting point of 80 to 80. It is in the range of 140C,
One of the remarkable characteristics of this low melting point nylon filament is that it melts at a considerably lower temperature under hot conditions than under dry heat conditions, generally 20 to 40 C lower. The present invention takes advantage of this characteristic of low-melting nylon filaments to fix the twist under mild conditions without damaging the fibers of the Motsupu cord yarn or impairing its flexibility, freedom and texture. It is something to do. Low melting point nylon filaments are generally available in the form of low-denier multifilament yarns, which generally range from 30 to 300 denier.

Suitable low melting point nylon filament yarns are available from Toshi Co., Ltd. under the trade name Elder and from Unitika Co., Ltd. under the trade name 7.
It is available under the product name 01 LuM.

Manufacturing method According to the present invention, the aforementioned heat-adhesive nylon filament thread is twisted with the heat-adhesive nylon filament thread, thereby intertwining the heat-adhesive nylon filament thread with the mop-cord thread.

At this time, use the thread for Mop cord 80 to 180 times/7
+! , especially 100 to 150 times/77! and a first twist in which the direction of twist is opposite to the first twist, and which is less than the number of twists in the first twist and is 50 to 150 times/m, particularly 70 to 160 times/m. Yes,. , Yoyoi.

Ply twisted. The number of twists is lower twist. Twisting times 10 times more than 1 bush
A reduction of 80% to 80% is advantageous for fixing the twist, also in connection with corporate bond processing, which will be described later.

If the number of twists in the first and second twists is less than the above range, even if the yarn is subjected to the treatment described below, the twist will not be sufficiently fixed, and the tendency for the yarn to fray or wear out during repeated use will increase. . In addition, if the number of twists in the first and second twists is greater than the above range, the flexibility and freedom of the motsupu cord will be lost, the dust collection and retention properties will be reduced, cleaning workability will be poor, and the texture will be poor. There is also a tendency to decrease.

The ratio of Motsupu cord yarn to low melting point nylon filament can be varied over a fairly wide range, but if the fineness of the former is dl and the fineness of the latter is d, then d, /d, x 100
It is preferable that the blending ratio expressed by is in the range of 0.1 to 15%, particularly 0.1 to 10%. That is, if the ratio of the low melting point nylon filament used is less than the above range, the twist will not be fixed sufficiently, and if it is more than the above range, the yarn will lose its flexibility and the cost will increase.

The plurality of Mop cord yarns and low melting point polyamide filament yarns can be twisted together in various ways within the range that satisfies the above-mentioned restrictions.

For example, the yarn can be twisted so that the low-melting point polyamide filament yarn is located at the center of multiple Mop cord threads, or the low-melting point nylon filament yarn is placed at the core.
The Mop cord yarn may be twisted in the form of a sheath covering it. It is desirable that the number of mop cord threads be as small as 2 to 10, particularly 2 to 7.

In a particularly preferred embodiment of the present invention, the low melting point polyamide filament yarn is a multifilament yarn having 5 to 60 filaments in a direction opposite to the ply twist of the twisted yarn and having a number of twists approximately corresponding to the number of twists of the ply twist. use. When such a low melting point nylon multifilament yarn is used, the untwisting of the multifilament occurs during twisting, and the low melting point nylon filament is distributed over a relatively wide area in the twisted yarn, and each thread is twisted at many points. It becomes possible to join effectively.

According to the present invention, the twisted yarn thus produced is treated in a bath maintained at a temperature higher than the moist heat melting point of the low melting point nylon filament, and the yarns are separated from each other by the low melting point nylon located between them. fuse.

As already mentioned, low melting point nylon exhibits a much lower melting temperature when heated with wet heat than when heated with dry heat. In the present invention, these characteristics are utilized to carry out the fusing process in a bath.

Although a water bath is commonly used as the bath, the above-mentioned treatment may be carried out simultaneously with dyeing, for example, using a dyeing bath. The temperature of the bath may generally be in the range of 70 to 100 C, but treatment at higher temperatures is also possible, for example by adding inorganic salts or water-soluble organic compounds to the bath to increase the boiling point of the liquid.

Furthermore, if a pressure-resistant container is used as the container for housing the bath, treatment at higher temperatures is also possible.

Bath treatment of the twisted yarn can be carried out by passing the twisted yarn continuously through a bath such as a 1-box, or by dipping a skein, cone, etc. of the twisted yarn into the bath. The immersion time in the bath is 1)
It is sufficient if the process can be carried out reliably, and generally a treatment lasting from several minutes to several tens of minutes is sufficient.

It goes without saying that the mop cord yarn according to the invention may be subjected to any per se known processing such as dyeing, finishing, oiling, etc.

Motsupu Cord Yarn and Effects The Motsupu cord yarn according to the present invention has the Motsupu cord threads fused together at multiple points with the low melting point nylon existing between them, ensuring the fixation of the twist and the inherent flexibility of the Motsupu cord yarn. , which has the advantage of being done without compromising freedom and texture.

Moreover, in the present invention, since the fusing process is performed in a hot water bath, the operation is not only extremely easy, but also
The processing conditions are also mild, there is no damage to the Motsupu cord yarn fibers, and the excellent strength of the Motsu cord yarn is maintained.

According to the present invention, the resulting soft cord yarn is sewn onto a base fabric such as a canvas, or by sewing 1.7-8. . Stay long! Cut it off and use it as a cleaning motsup. Of course, it is also possible to reverse the order and apply the above-mentioned treatment to a motsu cord manufactured in the shape of a motsu. This motsu is impregnated with a known dust-collecting and retaining oil agent, and is kept in a so-called dry state. It can also be used as a rental dust control motsup.

Example The invention is illustrated by the following example.

Example 1 and Comparative Examples 1 and 2 A second cotton yarn and a low melting point copolymerized nylon multifilament yarn (100,?/12 filament, Z) having a dry heat melting temperature of about 100C and a wet heat melting temperature of about 80C. twist,
Two twisted yarns (number of twists: 357'/m) were fed together to a twisting machine to produce two twisted yarns with a first twist of Z120T/77L and a second twist of 5154T/m. The sample was immersed under tension in a hot water bath for about 15 minutes to perform a fusion process. This cord yarn was cut to a length of 20 Crn, and a large number of rows thereof were sewn onto a cloth tape to produce a mop.

For comparison, a two-strand yarn of second cotton yarn was produced in the same manner as above except that the low melting point nylon multifilament yarn was not used. Fine polyethylene powder with a softening point of 84C was added to this twisted yarn based on the weight of the yarn. 10 chips were deposited and heated at 200 C in an electric heating furnace.

The mixture was treated for 1 minute to produce a fusion treatment system. From the thus obtained motsupu cord yarn, motsupu (comparative example 1)
was manufactured.

In addition, a cotton twisted yarn that was not subjected to the fusion treatment using polyethylene fine powder was used as a motsupu cord yarn in the same manner as motsupu (comparative example 2).
) was manufactured.

These motu were subjected to the following oil impregnation treatment: 0 The following oil composition: Liquid paraffin 40 parts Alkylbenzene oil 53@Is Surfactant 6 parts CCH, CH, O), H 70% and C,, H,, C0NIICH ,CH,NH(C
H, CH.

0), mixture with H30%, was prepared.

The treated motsu of Example 1 and the motsu of Comparative Examples 1 and 2 were immersed in a 60C water bath at a bath ratio of 10:1, and the pH of the bath was adjusted to 4.5. The above-mentioned oil composition was added at a concentration of 15 g per fiber to form an oil emulsion. During the course of 0 hours, the oil composition was exhausted by the motsup pile yarns, and in the case of any motsup pile yarns, the liquid was It became transparent.

After dehydrating and drying the oil-impregnated motsupu obtained by smelting,
It was subjected to the following tests.

(1) Cleaning workability test These motsus were attached to a mat gripping tool and five panelists were asked to actually clean the floor surface, and the ease of cleaning with the motsus and the feel of the motsu cords were evaluated. Excellent 5, Good 3
, with a possible score of 10, and the results are shown as a total value.

(2) Dust-catching properties One sheet of the above-mentioned mop and silica sand powder of twice the weight of the mop are placed in a plastic container, covered with a lid, and rolled up well to uniformly adhere the silica sand powder to the cloth. This material is then subjected to constant mechanical vibration 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, b-α Dust collection rate = -X100 (%) α Here, α: Fabric weight before test b: Weight after test (3) Mop cord thread wear test This was carried out repeatedly, and the number of sweeps was determined until it became difficult to sweep due to pile loss.

(4) Durability test The above motsup was cleaned and washed for 4 weeks.
! The cycle of regeneration treatment by oil impregnation treatment was repeated 10 times, and the occurrence of fraying of the Mop cord yarns and the degree of recontamination of the Mop cord yarns were evaluated.

The results obtained are shown in Table 1 below.

The results shown in Table 1 indicate that the Mop cord yarn produced by the method of the present invention has cleaning workability exactly the same as that of untreated Mop cord yarn, since the plurality of threads are fused together at many points where they touch each other. In addition to providing texture and dust collection properties,
Compared to conventional fusion yarns, it has no oil staining properties and has remarkable effects in terms of preventing fraying and wear and tear.

Claims (4)

[Claims] (1) A plurality of threads for motu cord made of natural fibers, synthetic fibers, or a mixture thereof and a heat-adhesive nylon filament thread are twisted together, and the temperature is maintained at a temperature equal to or higher than the moist heat melting temperature of the adhesive nylon filament thread. A method for producing motsupu cord yarn that is prevented from fraying, characterized by immersing the twisted yarn in a hot water bath and fixing the threads for motu cord to each other via a melted material of heat-adhesive nylon filament. (2) The method according to claim 1, wherein the yarn for the motsu cord is made of polyamide fiber. (3) The method according to claim 1, wherein the yarn for the motsu cord is cotton yarn. (4) The method according to claim 1, wherein the heat-adhesive nylon filament yarn is a low melting point copolyamide filament having a moist heat melting temperature of 100°C or less.