JPS6112946A - Yarn of mop - 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 Object of the Invention (Field of Industrial Application) The present invention relates to a yarn such as motsupu formed by intertwining cotton yarn and heat-adhesive synthetic fiber yarn.

(Prior Art) Generally, yarn is made by twisting its constituent fibers together, and this twisting increases the strength of the yarn and prevents the constituent fibers from separating from the yarn. Therefore, it is very important to prevent the yarn from untwisting in order to maintain the quality of the yarn.

Therefore, in order to prevent untwisting of the yarn, particularly for large-count yarns such as Moppu, which are prone to untwisting, it is common to use a twisted yarn made by twisting two yarns together.

Conventionally, in order to prevent this twisted yarn from untwisting, two
Soak the twisted cotton threads in caustic alkaline solution.
The action of this caustic alkaline solution causes the cotton thread to shrink (so-called mercerization or mercerization), or the two cotton threads are twisted together and placed in hot water (100°C) to cause the cotton thread to shrink. Ta.

(Problems to be Solved by the Invention) However, the effect of preventing untwisting is insufficient even with conventional yarns. In particular, even if the untwisting prevention effect is sufficient at the beginning of use, the untwisting becomes more severe as the yarn is used.

Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention includes at least one cotton yarn mixed with or without synthetic fibers, and a method of melting the cotton yarn in a state entangled with the cotton yarn. A method of forming threads such as motsupu with the heat-adhesive synthetic fiber threads has been adopted.

(Function) When the heat-adhesive synthetic fiber thread is melted in a state in which the cotton thread and the heat-adhesive synthetic fiber thread are intertwined, the melted synthetic fiber thread adheres to the surface of the cotton fiber and binds the cotton fibers together, making the cotton thread Make sure to maintain the twisted state.

(Example) Now, cotton fiber is composed of a mixture of crystalline portions in which cellulose, which is its main component, is regularly arranged in parallel and irregular amorphous portions.

When this cotton fiber is immersed in water or brought into contact with water vapor, the water penetrates into the gaps in the amorphous portion, causing the gaps to widen significantly and swell, while at the same time, the cellulose in the amorphous portion becomes more mobile. (hereinafter, this property is referred to as swelling property). Cotton fibers can also be soaked in water or exposed to steam under pressure, and
When heated above ℃, it swells further.

Furthermore, even when cotton fibers are heated to about 100 to 105 degrees Celsius, they only lose the water content in the amorphous portions and do not change much, but as the heating time increases, most of the water content is lost and they become hard like glass. Become. Also, under pressure, for example, cotton fibers in a twisted state will remain twisted for a long time even after the pressure and temperature return to normal conditions (of course, they can be fixed not only in a twisted state but also in any shape). can be,
(Hereinafter, this property will be referred to as plasticity).

As mentioned above, two cotton threads twisted together are heated in boiling water (1
The cotton yarn was put in a temperature of 00°C to cause shrinkage, which took advantage of the swelling and plasticity described above, but it was insufficient to prevent the twisted yarn from untwisting.

Also, when cotton fibers are heated to about 160°C, water is extracted from cellulose and the cotton fibers begin to decompose.

Therefore, considering that prevention of untwisting of twisted yarn using only swelling and plasticity is insufficient and that cotton fiber decomposes at about 160°C, we developed a thermoadhesive synthetic fiber that melts in the range of 100 to 150°C. As a result of various experiments conducted based on the idea of utilizing adhesion and adhesion, desirable results were obtained in the following examples.

First, as shown in Figure 1, l is the first of the two (531
4.8 denier) cotton yarn, each twisted in the same direction. 2 is a thermoadhesive synthetic filament yarn (for example, polyethylene fiber) having a thickness of 150 deniers, and has a melting temperature in the range of 110 to 130°C. 3
As shown in FIG. 2, the thermoadhesive synthetic filament yarn 2 and the two cotton yarns 1 are twisted together in a direction opposite to the twisting direction of the cotton yarn 1 itself (in this example, the number of twists is Approximately 2.54 CIl (4 to 5 times per inch)
This is the formed false twisted yarn.

Strain the same false twisted yarn 3 (as shown in the diagram, in this example, 1 to
(approximately 3 kg), and the temperature inside the pressure vessel is 11O to 140℃.
In the same container, multiple skeins (
30 to 50 kg in total) for about 5 minutes. Then,
By heating the heat-adhesive filament yarn 2 above its melting temperature, it completely melts under the influence of steam, and this molten substance permeates into the cotton yarn 1. As a result, the molten substance adheres to the cotton fiber surface and bonds the cotton fibers to each other,
Under normal conditions, the twisted state of the cotton thread 1 itself and the twisted state of the same cotton thread 1 are reliably maintained.

The twisted yarn formed in this way has a good texture and does not untwist at all even after being used as a motsupu for a long time.
Further, even after cleaning the motsupu many times, no untwisting phenomenon occurred.

The following effects are considered to be the reason why the desired twisted yarn for motu, which does not cause the untwisting phenomenon, was obtained.

In other words, when cotton fibers are heated to over 100°C and lose most of their water content, they become hard like glass, but because of the presence of steam in the pressure vessel, the water-containing bones are lost from the cotton fibers. Therefore, the feel of the cotton yarn 1 is not lost.

Further, since a strong pressure of about 2 to 3 kg/ad is applied to the cotton yarn 1, the steam permeates into the gaps in the amorphous portion of the cotton fibers, further swelling the same portion. Therefore, the amorphous part becomes more easily deformed, and due to the deformation of the same part, the cotton thread 1
The twist itself and the twisted state of the same cotton yarn 1 are stabilized.

Next, the desired thickness of cotton thread when using two cotton threads,
The relationship between the thickness of the heat-adhesive synthetic filament yarn and the number of twists is shown in the table below.

However, it is also possible to use cotton yarn mixed with synthetic fibers such as nylon or acrylic fibers whose melting temperature is higher than that of the heat-adhesive synthetic filament yarn.

In addition, in the above embodiment, the twisted yarn was made using two cotton yarns, but it is also possible to make the twisted yarn using three or more cotton yarns.Furthermore, even when only one cotton yarn is used, the untwisting of the same cotton yarn can be done easily. fully prevented.

Further, in the above embodiment, the wind was stored in the pressure vessel for about 5 minutes (7), but even if the wind is stored in the pressure vessel for more than 5 minutes, the desired twisted yarn can be obtained as in the above embodiment.

The present invention utilizes the adhesive strength of heat-adhesive synthetic filament yarns with a low melting temperature, thereby making it possible to produce motsu yarn with good texture in a short time, and to reliably prevent untwisting of cotton yarns. I can do it.

Furthermore, by utilizing the adhesive force of the filament yarn, the present invention can prevent untwisting of the cotton yarn even when synthetic fibers having a higher melting temperature than the filament yarn are mixed.

Furthermore, unlike conventional mercerization, the present invention pressurizes and heats in the presence of steam, making it possible to produce mop thread at low cost.

Furthermore, the yarn of the present invention can be used not only for motu but also for mats and the like.

Effects of the Invention As detailed above, the present invention utilizes the adhesive strength of heat-adhesive synthetic fiber yarns, thereby making it possible to manufacture threads for motsupu etc. with a good texture in a short period of time, and also to reduce the twisting of cotton threads. It reliably prevents untwisting, and even when synthetic fibers with a higher melting temperature than the heat-adhesive synthetic fiber yarn are mixed into the cotton yarn, untwisting of the cotton yarn does not occur, which has the effect of reducing costs. It was an invention that found great value in industrial applications as yarn.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a state in which two cotton threads and a thermoadhesive synthetic filament thread are overlapped, and Fig. 2 is a perspective view of a road body showing a state in which the same cotton thread and filament thread in Fig. 1 are false-twisted. It is.

Claims (1)

[Scope of Claims] 1. A mop, etc., characterized by comprising at least one cotton yarn mixed with or without synthetic fibers, and a heat-adhesive synthetic fiber yarn intertwined with the cotton yarn and melted. thread. 2. The thread for a mop or the like according to claim 1, characterized in that there are a plurality of cotton threads twisted together. 3. The yarn for mops and the like according to claim 2, wherein the cotton yarns are mutually bonded by thermoadhesive synthetic fiber yarns. 4. The yarn for mops and the like according to claim 1, wherein the heat-adhesive synthetic fiber yarn is a filament yarn and has a melting temperature of 110 to 130°C.