JP2002165741A - Cleaning string and cleaning utensil composed thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide cleaning string excellent in antibacterial properties, a wiping performance, drying characteristics, and further with little dust making properties, and a cleaning utensil composed thereof. SOLUTION: This cleaning string is composed of a 20-60 weight % of multifilament composed of a thermoplastic resin containing antibacterial ceramics and a 40-80 weight % of crimped multifilament of 0.5-2.0 dtex in single filament fineness composed of the thermoplastic resin, and the string is formed into a wiping portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION Conventionally, cleaning tools such as mops have been generally used for cleaning floors and the like. The mop is
It consists of a wiping part and a handle to which the wiping part is attached. The wiping portion is formed by collecting a large number of string-like yarns, and the string-like yarns are formed by twisting. The wiping part of such a cleaning tool such as a mop is used by impregnating with an oil component or the like to double the floor, and is used in a wet state containing water or a liquid medicine. Then, dirt is wiped off by attaching dust or dust on the floor surface. In general, cotton fiber, which is a natural fiber with good water absorption, has been used to obtain sufficient wiping properties and is widely used for cleaning floors, etc., and wipes off dirt by attaching dust and dirt. Floors, etc. are kept clean.

However, the wiping portion itself cannot be said to be clean. Generally, a cleaning tool such as a mop using a cotton fiber, which is a natural fiber, is slow to dry because a thread at a wiping portion has water retention, and is often kept wet for a long time after cleaning. For this reason, microorganisms such as bacteria or mold grow on the wiping portion.

[0003] Therefore, there have conventionally been proposed some techniques for suppressing the growth of bacteria by using antibacterial fibers for the yarn of the wiping portion of the cleaning tool. For example, Japanese Patent Application Laid-Open No.
No. 82 publication.

[0004] In addition, the yarn made of natural fiber cotton fiber, which is widely used for the wiping part of conventional cleaning tools such as mops, is repeatedly wiped and washed. There is a problem that it may come off and cause dust itself.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cleaning thread having excellent antibacterial properties, wiping properties and drying properties, and having less self-dusting properties, and a cleaning tool comprising the same. Is what you do.

[0006]

The first aspect of the present invention is as follows.
20 to 60% by weight of a multifilament made of a thermoplastic resin containing an antibacterial ceramic and 40 to 80% by weight of a multifilament made of a thermoplastic resin and having a crimp of a single yarn fineness of 0.5 to 2.0 dtex (decitex) A cleaning thread characterized by comprising:

The second aspect of the present invention is, as a preferred embodiment of the first aspect, a cleaning thread characterized in that the antibacterial ceramic is made of a soluble glass containing silver ions.

A third aspect of the present invention is a cleaning tool having the cleaning thread as a wiping portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The cleaning yarn of the present invention is made of a thermoplastic resin. As the thermoplastic resin, polyamide resin,
A typical example is a polyester resin. For example, as a polyamide resin, 6-nylon, 6,6-nylon, 6,10
There are polyamide homopolymers such as nylon, 11-nylon and 12-nylon, and copolymerized polyamide resins containing these as main components. Examples of the polyester resin include polyester homopolymers such as polyethylene terephthalate, polybutylene terephthalate, polyethylene oxybenzoate, polyethylene naphthalate, and polylactic acid, and copolymerized polyester resins containing these as main components.

[0010] Among them, polyamide resin is particularly preferable as a cleaning yarn because the resin itself has water absorbency, and is excellent in abrasion resistance and drying property. By using such a thermoplastic resin, it is possible to provide a cleaning thread which is very excellent in wiping properties, drying properties and self-dust generation as compared with natural fibers.

The multifilament having a single-fiber fineness of 0.5 to 2.0 dtex (hereinafter, may be simply referred to as “fine fiber”) made of the thermoplastic resin used in the present invention must have crimp. The presence of crimp is necessary from the viewpoint of improving the wiping property and antibacterial property of the yarn. The method of crimping the fiber is performed by a conventionally known crimping method. For example, it can be performed by a processing method such as a false twisting method, a stuffing method, a stuffing gear method, a knit denit method, a rubbing method, an air jet method, a twist-heat setting-untwisting method, and an open fiber blending method.

The multifilament containing an antibacterial ceramic made of a thermoplastic resin used in the present invention (hereinafter, may be simply referred to as "antibacterial fiber") does not need to have crimp particularly. It is preferable to have a crimp.

The most preferred antibacterial ceramic used in the present invention is a fusing glass containing silver ions. Other antibacterial ceramics include those based on zeolite, zirconium phosphate, calcium phosphate, silica gel, or the like. The reason why the melting glass containing silver ions is preferably used is that the composition can be adjusted in consideration of the physical and chemical properties of the glass so as to have a controlled melting rate, and water and liquid chemicals can be used. This is because it is well-suited for cleaning, and is suitable as a cleaning thread for wiping water or liquid chemicals containing dust or dust at the time of cleaning, in terms of antimicrobial effect, permanence, and the like.

The soluble glass, which is the base material of the antibacterial ceramic used in the present invention, can elute silver ions at a substantially constant rate over an arbitrary period of several hours to several years. The eluted silver ions are adsorbed on the cell wall of bacteria or microorganisms or condensed in the cell membrane, inhibit the growth of bacteria or microorganisms, and exhibit an antibacterial function.

The amount of the antibacterial agent in the antibacterial fiber is preferably 0.1 to 5% by weight, depending on the ratio of the antibacterial fiber in the cleaning yarn.

The method of adding the antibacterial ceramics may be a method of producing a master chip by a so-called masterbatch method in which the antibacterial ceramics and the thermoplastic resin are kneaded with a kneading device such as a twin-screw kneader and melt-spinning.
Alternatively, an antibacterial ceramic dispersion dispersed in a low-molecular-weight thermoplastic resin which is easily dispersed in the thermoplastic resin in advance may be press-fitted and kneaded into the molten thermoplastic resin before the spinneret is extruded.

The single-fiber fineness of the antibacterial fiber used in the present invention is not particularly limited. However, the production becomes extremely difficult as the fineness decreases. Also, as the fineness increases, the proportion of antimicrobial ceramics contained within the fiber increases,
The antibacterial performance of the antibacterial agent deteriorates. Therefore, it is generally preferable to set the fineness to about 2.0 to 10 dtex.

In the present invention, the antibacterial fiber and the ultrafine fiber are mixed to form a cleaning yarn. The single-fiber fineness of this ultrafine fiber must be 0.5 to 2.0 dtex (decitex), and preferably the single-fiber fineness is 0.8 dtex to 1.7 dt.
ex. If the single yarn fineness is less than 0.5 dtex, yarn breakage is likely to occur at the time of yarn production, and single yarn strength physical properties are likely to be reduced. The yarn breaks and dust is easily generated, causing self-dusting. On the other hand, 2.0 dte
If it exceeds x, the wiping properties will be poor.

The cleaning thread of the present invention comprises the above-mentioned antibacterial fiber and ultrafine fiber.
It must be 0-60% by weight. If the antibacterial fiber is less than this range, the antibacterial property of the cleaning yarn is not sufficient,
Insufficient drying and dusting resistance. On the other hand, when the amount of the antibacterial fiber is larger than this range, that is, when the content of the ultrafine fiber is less than 40% by weight, the cleaning performance is not sufficient.

The antimicrobial fiber and the ultrafine fiber used in the present invention can be produced by a usual spinning method. For example,
U spun at a low spinning speed of 600 to 1500 m / min.
The DY yarn may be drawn at a later date by using a drawing machine, or may be collected as a POY yarn spun at a spinning speed of 3000 to 4800 m / min. The obtained fiber is crimped by the method described above. Thereafter, the antibacterial fiber and the ultrafine fiber are converged and mixed, and twisted as necessary to obtain a cleaning yarn.
Fineness suitable for final cleaning yarn is 300-200
00dtex.

The cleaning yarn of the present invention is made of a thermoplastic resin containing an antibacterial ceramic and has a crimped multifilament and a single yarn fineness of 0.5 d made of the thermoplastic resin.
It consists of a bundle of multifilaments having crimps of tex to 2.0 dtex and twisted tassel yarns.

In the present invention, the fineness of the yarn is generally the fineness of a yarn used for a mop or the like. For example, the fineness of the yarn is 300 dtex to 20,000 dtex.
The length of the cleaning yarn of the present invention varies depending on the final use, but is approximately 20 to 200 mm.

The cleaning yarn of the present invention may be subjected to post-processing such as dyeing, which is generally performed without impairing its wiping properties and antibacterial properties.

A cleaning tool such as a mop can be made using the cleaning thread of the present invention as a wiping portion.

Hereinafter, the present invention will be described specifically with reference to examples. Antimicrobial properties, wiping properties, drying properties, and dusting properties were comparatively evaluated as evaluation items of the present invention and comparative examples.

The antibacterial performance was evaluated by a unified test method defined by JAFET (Council for Evaluation of New Function of Textile Products).場合 indicates that the bacteriostatic processing standard is satisfied, ○ indicates that the antibacterial deodorizing processing standard is satisfied, and x indicates that the sample does not satisfy the standard and has no antibacterial effect.

The wiping property was evaluated based on the remaining state of water droplets and dust adhered to the floor surface after wiping water and dust with a mop. ○, the case where water and dust can be wiped off without leaving any residue, ○, the case where a small amount of water droplets and dust remain, and the case x where the water droplets and dust remain without wiping.

The dryness was evaluated by keeping the water sufficiently, squeezing the mop to such an extent that water did not drip, and then after 1 hour, the state of adhesion of water to the floor when the floor was wiped with the mop again. The case where no water adhered to the floor at all, ○ when very little water adhered, Δ when the floor was slightly wet, and x when wet.

The evaluation of dust generation was performed by wiping the floor surface and in the state of occurrence of yarn breakage of the mop yarn. The case where no thread breakage was generated was evaluated as ◎, the case where very little was generated was evaluated as 少 し, the case where it was slightly generated was evaluated as △, and the case where much was generated was evaluated as x.

(Examples 1-2) 6- having a solution viscosity of 2.78
Ishizuka Glass Co., Ltd. with an average particle size of 2.0 μm in nylon resin
0.48% of antibacterial agent Ion Pure WPA (product name) was added, and the spinning temperature was 27 using a 12-hole nozzle.
Spinning was performed at 0 ° C. and a spinning speed of 750 m / min. The stretching was performed by cold stretching at a stretching ratio of 3.1 to obtain 267 dtex / 12f antibacterial fiber. A knitted fabric obtained by knitting the yarn with a 240 gauge circular knitting machine was set at 110 ° C. for 30 minutes, and subjected to a denitting treatment to obtain crimped antibacterial fibers.

Next, a 6-nylon resin having a solution viscosity of 2.78 was spun at a spinning temperature of 270 using a 36-hole nozzle.
At a spinning speed of 4000 m / min.
/ 36f was obtained. Align these two yarns,
122dtex / 72f. Further, the yarn was twisted at a speed of 107 m / min by a false twisting machine, at a false twist temperature of 170 ° C, and a twist number of 3200.
T / M, 6% overfeed treatment was performed to obtain crimped ultrafine fibers.

The thus obtained 267 dtex / 12f
Anti-bacterial fibers having crimps of 122 dtex / 72
bundle of 10 ultrafine fibers having crimp of f, 160T twist
/ M to obtain a twisted yarn having a total fineness of 1754 dtex.
Three 1754 dtex twisted yarns were aligned and twisted at a twist number of 110 T / M to obtain a twisted yarn having a total fineness of 5262 dtex. This twisted yarn of 5262 dtex is heated at 83 ° C. 40
The yarn was separately set to obtain a cleaning yarn having a mixing ratio of 30% by weight of crimped antibacterial fiber and 70% by weight of crimped ultrafine fiber.

Using this cleaning thread as a base cloth, a mop having 5,500 threads sewn and having a thread length of 10 cm and a portion for wiping off the thread was obtained.

This mop was used for cleaning the hospital floor for 1.5 months and evaluated. Even after 1.5 months of use, the antibacterial property, the wiping property, and the drying property were very good, and no self-dusting was observed.

Comparative Example 1 On the other hand, as a comparative example, a mop having a 100% cotton fiber cleaning yarn in the same manner as in Example 1 showed propagation of mold and bacteria, and the like. Poor wiping properties and drying properties were observed, and cotton fibers were broken off and many dusts were generated.

[0036]

[Table 1]

(Example 3) 267d manufactured in Example 1
Two antibacterial fibers of tex / 12f and 122dtex / 7
It was produced similarly except that it was a 2f ultrafine fiber and no crimping was performed. (Example 4) 267 dtex / 12 produced in Example 1
Two antimicrobial fibers of f were prepared in the same manner except that crimping was not performed.

[0038]

[Table 2]

(Examples 5 to 11) The same procedures as in Example 1 were carried out except that an antibacterial fiber having a crimp of 267 dtex / 12f and an ultrafine fiber having a crimp with a changed single-filament fineness were produced in the same manner as in Example 1. It was produced similarly. .

[0040]

[Table 3]

(Examples 12 to 18)
Antibacterial fiber having crimp of 67 dtex / 12f and 12
It was an ultrafine fiber having a crimp of 2dtex / 72f, but produced in the same manner as in Example 1 except that the mixing ratio was changed.

[0042]

[Table 4]

(Embodiment 19) In the same manner as in Embodiment 1, 7
8dtex / 24f antibacterial fiber was obtained. Antibacterial fibers obtained by twisting seven of these yarns were obtained.

Next, a 6-nylon resin having a solution viscosity of 2.78 and a 6-nylon resin having a solution viscosity of 1.77 were used.
Ultrafine fibers composed of splittable conjugate fibers having a weight ratio of nylon resin: polyester resin of 1: 3 were obtained. The cross section of the cross section of the splittable conjugate fiber is 6-nylon resin, and the cross section of the four split petals is polyester resin. A spinning temperature of 293 ° C. and a spinning speed of 146 using a split-type composite nozzle.
After spinning at 0 m / min, it was hot-drawn 2.75 times with a drawing machine to obtain 167 dtex / 56f ultrafine fibers. This yarn was twisted by a false twisting machine at a yarn speed of 145 m / min and a false twist temperature of 175.
C, 2400 T / M number of twists, 1% overfeed treatment, split and extra-fine fiber with crimp consisting of 6-nylon fiber 56f with single yarn fineness 0.74 dtex and polyester fiber 224f with single yarn fineness 0.56 dtex I got

The thus obtained seven antibacterial fibers of 78 dtex / 24f and seven ultrafine fibers having crimp of 167 dtex / 280f were bundled and twisted at a twist number of 160 T / M to obtain a twisted yarn having a total fineness of 1715 dtex. . This 1715d
3 twisted yarns of tex are aligned and the number of twists is 110 T / M.
To obtain a twisted yarn having a total fineness of 5145 dtex. This 5145 dtex twisted yarn is set at 83 ° C. for 40 minutes, and 31% by weight of antibacterial fiber and 69% by weight of crimped ultrafine fiber
Was obtained.

Using this cleaning thread, a mop similar to that of Example 1 was obtained.

[0047]

The cleaning thread of the present invention can provide a sanitary and durable cleaning tool having excellent antibacterial properties, wiping properties, drying properties, and low self-dusting properties. is there.

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3B074 AA02 AA08 AB04 AC03 4L035 BB31 FF01 GG03 KK05 LC02 4L036 MA06 MA24 MA33 MA39 PA21 PA46 RA04 UA26

Claims (3)

[Claims] 1. A multifilament comprising 20 to 60% by weight of a thermoplastic resin containing an antibacterial ceramic,
Single yarn fineness of thermoplastic resin 0.5 to 2.0 dtex
Multifilament 4 with crimp of (Decitex)
A cleaning thread comprising 0 to 80% by weight. 2. The cleaning thread according to claim 1, wherein the antibacterial ceramic is a soluble glass containing silver ions. 3. A cleaning tool comprising the yarn according to claim 1 as a wiping portion.