JPH04150822A - Strand for mop - Google Patents

Abstract

PURPOSE:To obtain a mop strand which has a strong adhesion that prevents the mop strand from being untwisted and is excellent in dust collecting performance, by a method wherein a large number of loops are formed on the surface of a confounded thread of thermoplastic synthetic fiber multi-filaments and two or more confounded thread are twisted. CONSTITUTION:A large number of loops are formed on the. surface of a confounded thread 1 of thermoplastic synthetic fiber multi-filaments by means of fluid agitation treatment. Three confounded threads 1 are passed between nip rollers 7 and led into holes 8a of a twisting guide 8, and simultaneously a thermal adhesive filament F is directly led into a hole 8b of the twisting guide 8. Then, they are wound on a winding bobbin 10 through a traveler 9. When a tension under which the thermal adhesive mono-filament F is sent into the twisting guide 8 is adjusted, the thermal adhesive mono-filament F can be positioned in around the center of the three confounded threads 1. Then, the twisted threads are heat-treated to form a mop strand.

Description

[Detailed description of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to yarn for mops.

(Prior art) Fibers generally used as yarn for motsupu are short fibers or long fibers made of cotton, acrylic, nylon, polyester, etc. When these are used as yarn for motsupu, the fibers In order to increase the strength and cohesion of fibers, it is common practice to twist the constituent fibers together.

As a method for preventing untwisting of the twisted yarns, in the case of motsu yarn made of short fiber cotton yarns, two cotton yarns twisted together are immersed in a caustic alkaline solution. A method has been adopted in which the cotton threads are shrunk by the action of , thereby preventing the twisted threads from untwisting.

In addition, recently, as disclosed in JP-A-61-100222 and JP-A-61-100223, when the short fibers and long fibers are twisted together, low melting point thermally adhesive nylon filaments have been proposed. A method has been proposed to prevent untwisting by fusing.

(Problems to be Solved by the Invention) However, in the conventional yarn for motsupu as described above, a fairly high concentration of caustic alkaline solution is used to improve the twist prevention effect, which causes significant damage to the fibers. Also,
It also has the disadvantage of being high in cost. Furthermore, since the fibers that make up the thread for motupu are made of cotton thread, it is difficult to drain water.
Because the drying energy cost is high and it is also a short fiber.

It also has the disadvantage that the fibers fall off during washing and use, resulting in stains.

Recently disclosed yarn for motsupu, in which untwisting is prevented by fusing using low-melting-point thermobonding nylon filament, has solved some of the problems of yarn for motsupu, but it has a low melting point compared to natural fibers. The adhesion of the nanonylon filament with melting point heat mm was weak and the twist arresting effect was poor. In addition, in the case of synthetic fibers9, ordinary regular yarn or crimped yarn adheres to the low melting point adhesive nylon filament with the filament surface being relatively flat, so the texture of the yarn for motsupu becomes hard, and Due to the small surface area,
The drawback is that Motsupu's ability is inferior and difficult to use.

The present invention was developed in view of the current situation, and has many loops formed in the yarn for motsupu, has a soft texture and a sense of volume, does not have any fibers falling off, and has the advantage of being able to be used repeatedly. Even after washing or using it for a long time, untwisting phenomenon may occur (.

Another object of the present invention is to provide a mop thread that reduces drying energy during washing.

(Means for Solving the Problems) The present invention achieves the above object and has the following configuration.

In other words, the present invention provides a yarn for motu made by twisting together a plurality of interlaced yarns of thermoplastic synthetic fiber multifilament, each of which has a large number of loops formed on its surface by fluid agitation treatment, and in which the interlaced yarns are heated together. The gist of the present invention is a thread for mopping, which is characterized by being bonded to each other by adhesive filament threads.

The present invention will be explained in detail below.

In the present invention, an interlaced yarn of thermoplastic synthetic fiber multifilament whose surface has been formed with a large number of loops by fluid agitation treatment is used as the base yarn of the mop yarn.

The fluid disturbance processing here means processing by an air injection method, and the processing mechanism will be briefly explained with reference to FIG. 4. FIG. 4 is an explanatory diagram for manufacturing the intertwined yarn used in the present invention. Thermoplastic synthetic fiber multifilament Yl
, Y2 are each introduced into the air injection nozzle 4 through the feed roller 2.3, entangled with the delivery roller 5 via the air injection nozzle 4 at different overfeed rates, and then wound up by the winding roller 6. taken.

What is the supplied thermoplastic synthetic fiber multifilament?
These thermoplastic synthetic fiber multifilaments are polyamide-based, polyester-based, polyacrylic-based, polyolefin-based, and other thermoplastic synthetic fiber multifilaments. It may be either regular yarn or regular yarn.

The overfeed rate between the feed roller 2.3 and the delivery roller 5 during the entangling process by the air injection nozzles 4 of these Y, , Y2 is a first-order overfeed rate in the sense of forming a large number of loops on the 9 surfaces. is preferred. First, the overfeed rate of the thermoplastic synthetic fiber multifilament Y1 that constitutes the core yarn is +3 to +30%.
It is preferably within the range of +3.0% or less.

Since the filaments are difficult to open, they are not sufficiently intertwined with the multifilaments Y constituting the decorative yarn.

When the amount is +30% or more, on the contrary, the filament is sufficiently opened by air injection.

The fiber opening is too large, and when intertwined with the decorative thread multifilament Y2, yarn sway occurs during processing.

Stable interlaced yarn cannot be obtained.

On the other hand, the overfeed rate of the thermoplastic synthetic fiber multifilament Y constituting the decorative yarn is preferably +10% or more. If it is less than +10%, the loops of the interlaced yarn will be small (when used as yarn for motsupu, the texture will be hard and the sense of volume will be poor, making it unsuitable as yarn for motsupu. Multifilament Y
When setting the overfeed rate of the multifilament Y2 for the decorative yarn and the overfeed rate of the multifilament Y2 for the decorative yarn, it goes without saying that the overfeed rate of the multifilament Y for the decorative yarn is increased.

When the overfeed rate is set as described above and the confounding process is performed, the results are as shown in an enlarged view in FIG.

It is possible to produce an intertwined yarn 1 in which the filament Y1 forms the core thread of the yarn, and the filament Ya forms a large number of loop-shaped protrusions.

In the present invention, a plurality of interlaced yarns 1 thus obtained are twisted together, and at this time, the thermoadhesive filament yarns are twisted so as to be located near the center of the plurality of interlaced yarns 1.

The heat-adhesive filament used here is made of hot-melt resin that can be manufactured into filaments by melt spinning.9 For example, polyvinyl butyral, acrylic resin, polyamide resin, polyester resin, ethylene-
Vinyl acetate copolymer.

Examples include ethylene-acrylic acid ester copolymer, polyurethane resin, etc., and these may be a single substance thereof, or a mixture thereof with a rubber component such as butyl rubber or polyisobutylene, or a natural resin such as rosin.

The components of the thermoadhesive filament yarn are selected depending on the type of thermoplastic synthetic fiber multifilament.

For example, in the case of intertwined yarns made of nylon 6 or nylon 66, polyamide copolymer resins or polyurethane resins are preferably used because of their high affinity with fibers. In the case of polyester interlaced yarn, polyester copolymer resins and ethylene-vinyl acetate copolymer resins are preferably used. In any case, an appropriate resin may be selected in consideration of untwisting, durability, texture, cost, etc.

The ratio of the heat-adhesive filament yarn to the interlaced yarn is preferably such that the content of the heat-adhesive filament yarn is 1 to 10% relative to the yarn for the mop from the viewpoint of preventing untwisting.
In particular, 3 to 6% is desirable.

If the content of the heat-adhesive filament yarn is less than 1%, the effect of preventing untwisting is insufficient, and if it exceeds 10%, the texture becomes hard, which is not preferable.

Next, the method of twisting together the plurality of intertwined yarns 1 and simultaneously twisting the thermoadhesive filament yarns so that they are located near the center will be described using two drawings.

FIG. 5 is a schematic diagram illustrating a twisting machine used in manufacturing yarn for motu according to the present invention, and FIG.
It is an enlarged view of the twisting guide used when twisting three pieces together. Figure 1 is a side view of the motsu yarn of the present invention, and Figure 2 is a cross-sectional view of the motsu yarn of the present invention, showing that the heat-adhesive filament yarn is near the center. There is.

In FIG. 5, three intertwined yarns 1 of a plurality of thermoplastic synthetic multifilament fibers, each of which has a large number of loops formed on its surface by fluid agitation treatment, are passed through the nip roller roughs and inserted into each slit hole of the twisting guide 8. At the same time, the heat-adhesive filament yarn F is directly guided to the slit hole 8b of the twisting guide 8 without passing it through the nip roller 7, and is twisted and wound through the traveler 9 into the bobbin 10.
Turn it over. At this time, the tension per denier of the thermoadhesive filament yarn F fed into the twisting guide 8 must be 175 or more than the tension per denier of the entangled yarn 1. When the feeding tension is 175 drops, when the interlaced yarns 1 are twisted together, the thermoadhesive filament yarn F enters in a meandering manner and is not located near the center of the three interlaced yarns 1.
Even with the heat treatment described below, adhesion between the intertwined yarns cannot be obtained. In order to arrange the thermoadhesive filament yarn F near the center of the three intertwined yarns, the tension is applied as described above and the slit hole 8a of the twisting guide 8 shown in FIG. 6 is applied.

The position of 8b is important. The slit hole 8a through which the heat-adhesive filament yarn F is passed is located at the center of each slit hole 8a through which the interlaced yarn 1 is passed, and each slit hole 8a is equally divided.

Further, the sizes of the slit holes 8a and 8b may be adjusted depending on the thickness of the interlaced yarn 1 and the heat-adhesive filament yarn F that pass through them. By adjusting the tension for feeding the thermoadhesive filament yarn F into the twisting guide 8 using such a twisting guide 8, the thermoadhesive filament yarn can be arranged near the center of the three intertwined yarns 1. I can do it.

The number of twists to be twisted is preferably about 50 to 150 times/m (hereinafter, the number of twists/m is abbreviated as T/M), particularly 70
~130 T/M.

It is even more desirable because of its stability. Number of twists is 50T/M
If it is less, the focusing effect of the interlaced threads will be poor.

On the other hand, if it is more than 150T/M, the texture will become hard,
Moreover, the loops on the surface become smaller and the surface becomes flat, making it unsuitable for use as yarn for motu.

The yarn for motsupu of the present invention can be obtained by heat-treating a yarn obtained by twisting interlaced yarn and heat-adhesive filament yarn. For example, any method may be used as long as it causes the strip to contract.

Examples include hot water treatment, steam treatment, and dry heat treatment. Among these, from the viewpoint of streamlining the process, a method using hot water treatment, which can be treated at the same time as dyeing, is preferable. By dyeing the twisted threads with the threads, it is possible to obtain threads for motu that are excellent in terms of texture. As the dyeing machine, a package dyeing machine and a hanging type introduction dyeing machine can be used.

The present invention consists of two or more configurations.

(Function) In addition to using a multifilament intertwined yarn with many loops formed on the surface as the base yarn for motupu yarn,
Since the heat-adhesive filament yarn is twisted and used, when the intertwined yarn shrinks due to hot water treatment, the heat-adhesive filament yarn is wrapped between the intertwined yarns, increasing the bonding area and strongly preventing untwisting. effect can be obtained.

In addition, the loop characteristics of this intertwined yarn provide dirt-catching performance, a soft texture, and a sense of volume.

Furthermore, the fibers do not fall off as occurs with short fibers such as cotton.

As in the present invention, when a plurality of these intertwined threads are twisted together, the countless loops on the 9 surfaces become intertwined with each other,
Even after repeated washing or long-term use, the untwisting phenomenon is less likely to occur, resulting in a highly durable motsu yarn.

Furthermore, by applying heat to the twisted interlaced yarns and causing them to shrink, the heat-adhesive filament yarns placed between the interlaced yarns are melted, bonding the interlaced yarns together, and forming loops on the surface of the twisted interwoven yarns. However, the fibers become tightly intertwined with other interlaced yarn loops, and the double effect can strengthen the prevention of untwisting.

(Example) The present invention will be explained in more detail with reference to the following nine examples. In the examples, the performance of the mop yarn was measured and evaluated by the following method.

(1) Texture The prepared yarn for mop was evaluated by touch using the following three-level evaluation.

○ Soft △ Normal Washing was carried out for 20 minutes at 60° C. using liquid synthetic detergent (trade name "Top", manufactured by Lion Oil Co., Ltd.) using Ig/l, followed by rinsing for 3 minutes three times. After repeating this process 10 times, it was dehydrated.

It was dried at 100°C for 30 minutes.

Changes in appearance (shedding of fluff, etc.) after 10 washes were evaluated in the following two stages.

○ No change in appearance x Falling of fuzz (3) Strong adhesive After untwisting the prepared motu thread by 5 cm in advance, one of the multiple entangled threads was tested using a self-recording tensile tester.
Grip the book with one grip and the rest with the other grip, grip interval 5 COI, pulling speed 10 ctn
The adhesive strength was measured under the condition of /min. In addition, the adhesive strength after washing 10 times was measured using the same method. After measurement.

5 samples from the maximum value and 5 samples from the minimum value of the chart for each sample
The average value of 10 samples was taken as the adhesive strength.

(4) Collection rate Put the prepared Mop thread Log and 30 g of commercially available kaolin with an average particle size of 1.1 microns into a stainless steel container.
After repeating rotation at a constant speed with the lid on to adhere kaolin to the motsu thread, the weight of the motsu thread before and after this operation was measured, and the collection rate (%) was determined using the 9th equation. .

Example 1 Relative viscosity 3.3. Nylon 6 multifilament with a fineness of 1260 denier/210 filament was used as multifilament Y for the core yarn as shown in FIG.

Binding, on the other hand, relative viscosity 2.8. Fineness 420 denier/4
8 filament nylon 6 multifilament and relative viscosity 2.6. Four nylon 6 multifilaments with a fineness of 70 denier/24 filaments were arranged together as multifilament Y for decorative threads, and in the apparatus shown in FIG. (manufactured by Line Co., Ltd.), the interlacing process was performed at an overfeed rate of +20% for the core yarn Y+, an overfeed rate of +200% for the decorative yarn Y2, an air pressure of 8 kg/cd, and a processing speed of 100 m/min. An interlaced thread was obtained. Three of these intertwined yarns were each passed through a nip roller 7 in a conventional ring twisting machine shown in FIG. On the other hand, three thermoadhesive filament threads of 100 denier/12 filaments (product name: Flor M, manufactured by Unitika ■) made of polyamide copolymer resin with a moist heat melting temperature of 95°C were
The yarns are pulled together and directly guided to the slit hole 8b of the twisting guide 8 without using the nip roller 7, and twisted at 100 T/M in the S direction together with the three interlaced yarns, resulting in a total fineness of 9.
A 600 denier thread for motu was obtained.

All of this yarn for mop was subjected to nine rounds of scouring and dyeing. First, scouring was carried out with a 1 g/l aqueous solution of Actinol R-100 (nonionic surfactant, product of Matsumoto Yushi Pharmaceutical Co., Ltd.) at 60°C for 30 minutes. Then, dyeing was carried out using a hanging type introduction dyeing machine.

[Dyeing Recipe 1] During dyeing, the temperature was raised to 98°C at a heating rate of 2°C/+nin, and then the temperature was maintained for 30 minutes.

After dehydration, it was dried at 100°C for 30 minutes.

A heathered yarn for motu according to the present invention was obtained.

The obtained thread for motsupu is made by intertwining threads of a plurality of twisted thermoplastic synthetic fiber multifilaments being adhered to each other near the center by twisted thermoadhesive filament threads during dyeing. Met.

For comparison with the present invention, a comparative mop yarn was prepared according to Comparative Example 1.2 below.

Comparative Example 1 Cotton yarn (cotton count 1.about 5314
Denier, S twist 200T/M) 2 pieces and melting temperature 120
℃ thermal adhesive polyethylene filament 240 denier/20
After applying the T/M twist, it was made into a general shape, and then it was twisted in a steam setter at a temperature of 130℃ and a pressure of 3kg/c+f.
A steam treatment was performed for a minute to obtain yarn for comparison.

Comparative Example 2 Three 1000 denier/48 filaments of nylon 6 crimped yarn (elongation rate 18%, hot water shrinkage rate 6%) manufactured by a heated compressed fluid processing machine were combined, and 130T in the S direction was formed.
/M twist to obtain a pre-twisted yarn with a fineness of 3000 denier, and use these two pre-twisted yarns to create a yarn of 65T/M in the Z direction.
When adding ply twist, three heat-adhesive filaments of 100 denier/12 filament made of polyamide copolymer resin with a thermal melting temperature of 95°C used in Example 1 were inserted and twisted together to create a motu with a total fineness of 6300 denier. Yarn was manufactured.

A whole of this mop thread was taken and dyed in the same manner as in Example 1 to obtain a comparative mop thread.

The performance of the mop threads of Example 1 and Comparative Examples 1.2 was measured and evaluated, and the results are shown in Table 1.

Table 1 As is clear from Table 1, the yarn for motsupu of the present invention is as follows:
Compared to the conventional mop yarns shown in Comparative Examples 1 and 2, it has excellent texture and does not shed any fuzz.

It has strong adhesion strength even after washing.

It was a thread for motsupu with excellent collection ability.

(Effects of the Invention) According to the present invention, the texture is soft and no fluff falls off.
In addition, since the interlaced yarn is welded with heat-adhesive filament yarn, it is possible to obtain a strong adhesive force, to reliably prevent untwisting, and to obtain yarn for motsupu that has excellent dirt collection performance. I can do it.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of yarn for motu of the present invention;
FIG. 2 is a cross-sectional view showing an example of yarn for motu of the present invention,
FIG. 3 is a schematic enlarged side view of the interlaced yarn used for the yarn for motsupu, FIG. 4 is an explanatory view of an apparatus for producing the interlaced yarn of FIG. 3, and FIG. FIG. 6 is an enlarged view of a twisting guide used in the twisting process. 1 Intertwined yarn 2.3 Feed roller 4 Air nozzle 5 ゛ Delivery roller 6 Winding roller 7 ・ Nip roller 8 Twisting guides 8a, 8b Twisting guide slit hole 9'
Traveler 10゛・ Winding bobbin Yl・Thermoplastic synthetic fiber multifilament Y2 °° for core yarn Thermoplastic synthetic fiber multifilament F′ for decorative yarn・Thermoadhesive filament Patent applicant Yu-Teiki Co., Ltd. 2 Figure 1/ Figure 3

Claims (1)

[Claims] (1) A yarn for motu made by twisting together a plurality of interlaced yarns of thermoplastic synthetic fiber multifilament with many loops formed on the surface by fluid agitation treatment, and the interlaced yarns are heated to melt each other. A yarn for motsupu characterized by being bonded to each other by adhesive filament yarn.