JP2004255023A - Cleaning mop and mop cord - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning mop having a superior wipe-off property and scarcely producing waste fiber. <P>SOLUTION: This cleaning mop is formed by sewing mop cords 1 to a mop base material. The mop cord 1 is disposed with a fusion bond yarn 3 between two roves 2 and 2 to be twisted. The roves 2 and 2 is bonded and fixed by softening and fusion of the fusion bond yarn 3. The mop cord 1 retains a stable shape by the twisting and the bond fixing. The roves 2 are formed by bundling and twisting multiple spun yarns, which are formed by spinning split type staple fibers. The split type staple fiber forms an extremely fine fiber by splitting. Therefore, there are multiple extremely fine fibers on the surface of the mop cord 1. This cleaning mop using the mop cords 1 wipes the dust by the extremely fine fibers so as to have superior wiping property. The extremely fine fiber is originated from the split type staple fiber and is bonded and fixed by the fusion bond yarn 3 so as to scarcely produce waste fiber. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a cleaning mop excellent in wiping dust and the like present on a surface to be cleaned.
[0002]
[Prior art]
The cleaning mop is one in which a wiping member is fixed to a carrier such as a mop base cloth, and the wiping member removes dust and the like on the surface to be cleaned. Conventionally, as a wiping material, a material in which a number of thread-like mop cords are sewn onto a mop base fabric, or a material in which a sheet-like nonwoven fabric is held by a holder is used. Among them, the former wiping material using the mop cord is preferable because it has a larger surface area and is superior in wiping properties.
[0003]
On the other hand, as the fibers constituting the wiping material, the smaller the fiber diameter, the larger the surface area of the wiping material and the better the wiping properties. From this, a cleaning mop using a mop cord made of ultrafine fibers as a wiping material is known (Patent Document 1), and a cleaning mop using a nonwoven fabric made of ultrafine fibers as a wiping material is also known ( Patent Document 2).
[0004]
From the above, it is considered that the use of a mop cord made of an ultrafine fiber as described in Patent Document 1 is most preferable for obtaining a cleaning mop having excellent wiping properties. However, the microfiber has a drawback that the tensile strength is low, the microfiber is easily cut at the time of cleaning, and fiber waste is easily generated. In addition, since the mop cords made of ultrafine fibers are obtained by bundling and twisting ultrafine fibers, there is a disadvantage that the ultrafine fibers are easily removed and fiber waste is easily generated. For these reasons, a mop cord made of ultrafine fibers has not been put to practical use.
[0005]
[Patent Document 1]
JP-A-2002-102132 (page 2, claims)
[Patent Document 2]
Microfilm of Japanese Utility Model Application Laid-Open No. 1-157655 (Claims for utility model registration on page 2)
[0006]
[Problems to be solved by the invention]
Thus, the present inventors have conducted intensive studies to develop a mop cord made of ultrafine fibers, but which is less likely to generate fiber waste, and used ultrafine fibers derived from split short fibers, and In the case of a mop cord having a specific configuration, it has been found that the ultrafine fibers are difficult to come off or cut. The present invention has been made based on such findings.
[0007]
[Means for Solving the Problems]
That is, the present invention relates to a cleaning mop in which a mop cord is sewn to a mop base cloth, wherein the mop cord is provided with a heat-fused yarn disposed between several rovings, twisted and twisted. The roving yarns are bonded and fixed by softening or melting of the heat-fused yarns, and the roving yarns are formed by bundling and twisting a large number of spun yarns obtained by spinning splittable short fibers. The present invention relates to a cleaning mop characterized in that ultrafine fibers generated by splitting split short fibers are present on the cord surface.
[0008]
First, definitions of main terms used in the present invention will be described as follows.
(Split short fiber)
The split type short fiber means a short fiber that is split by a physical external force in a spinning step, a twisting step, or the like, or by a method such as partial dissolution to generate an ultrafine fiber. Note that the short fiber is a fiber having a fiber length that can be spun.
(Spun yarn)
The spun yarn means a yarn obtained by spinning a sliver made of split short fibers.
(Roving yarn)
The roving means a yarn obtained by bundling and twisting a large number of the spun yarns.
(Mop code)
The mop cord means a yarn obtained by bundling several rovings, and is sewn on a mop base cloth to form a cleaning mop.
From the above, the mop cord is composed of roving, the roving is composed of spun yarn, the spun yarn is composed of split short fibers, and the split short fiber is composed of ultrafine fibers. It means that it is. Therefore, in any of the mop cord, the roving and the spun yarn, the smallest constituent unit constituting the mop cord, the roving yarn and the spun yarn is an ultrafine fiber.
[0009]
The cleaning mop according to the present invention is obtained by sewing a mop cord on a mop base cloth. As the mop base cloth, any conventionally known base cloth is used. The mop cord is sewn to the mop base cloth by a conventionally known method. For example, a mop cord may be sewn to a mop base cloth with a sewing thread, or a mop cord may be tufted to a mop base cloth and sewn. Alternatively, a mop cord may be sewn around the periphery of the mop base cloth with a sewing thread, and the mop cord may be sewn at the center of the mop base cloth by tufting.
[0010]
The mop cord according to the present invention has a configuration in which a heat-fused yarn is arranged and twisted between several rovings, and the rovings are bonded and fixed by softening or melting of the heat-fused yarn. is there. Specifically, the configuration is as shown in FIG. That is, the mop cord 1 is composed of the roving yarns 2 and 2 and the heat fusion yarn 3, and the heat fusion yarn 3 is arranged between the roving yarns 2. The roving yarns 2 and 2 are twisted, and the surface of the heat fusion yarn 3 is softened or melted, and the roving yarns 2 and 2 are bonded and fixed. Therefore, the mop cord 1 is fixed in a twisted state, is stable, and does not untwist.
[0011]
As the heat-fusible yarn 3, a yarn whose melting point is lower than the melting point of the ultrafine fiber, which is the minimum constituent unit of the roving yarns 2 and 2, is used. Otherwise, when the heat fusible yarn 3 is softened or melted, the ultrafine fibers which are the minimum constituent units of the roving yarns 2 and 2 are also softened or melted and fused to each other. Become impossible. That is, it is premised that the heat-fusible yarn 3 has a melting point lower than the melting point of the ultrafine fibers. A specific example of the melting point of the heat fusible yarn 3 may be about 100 to 150 ° C, and the melting point under wet heat may be about 90 to 130 ° C. This is because if the melting point is at this level, it is unlikely that the melting point will be higher than the melting point of the ultrafine fibers.
[0012]
The heat fusion yarn 3 is generally a monofilament yarn or a multifilament yarn. The fineness is about 30 to 300 decitex. Specific examples of the polymer constituting the heat-fusible yarn 3 include a low-melting polyamide copolymer, a low-melting polyester copolymer, and polyethylene.
[0013]
The heat fusion yarn 3 is disposed between the roving yarns 2. The number of rovings 2, 2 may be two or three or more. If the number of the rovings 2 and 2 is too large, the rovings 2 and 2 are less likely to be bonded and fixed. Therefore, it is preferable that the rovings 2 and 2 are most easily bonded and fixed. Then, twisting is performed in a state where the heat-fused yarn 3 is arranged between the roving yarns 2 and 2. This twisting direction may be the same direction as the twisting direction of the roving 2 or may be the opposite direction. Generally, in the opposite direction, fluff is more likely to appear on the surfaces of the rovings 2 and 2. That is, it is preferable because a large number of ultrafine fibers can easily be present on the surface of the mop cord 1 and the wiping property is improved. Further, the degree of twisting is preferably about 50 to 300 turns / m.
[0014]
The heat-fused yarn 3 is softened or melted in a state where several rovings 2 and 2 are twisted, and adhesively fixes between the rovings 2 and 2. Specifically, the bonding between the rovings 2 and 2 is performed by bonding split short fibers and ultrafine fibers constituting the rovings 2 and 2 with the heat-sealing yarn 3. In order to soften or melt the heat-fused yarn 3, heat treatment may be performed. As the heat treatment, a method of heating with dry heat, a method of heating with wet heat, or the like is employed, but heating with wet heat is preferred because it softens or melts at a low temperature. As a method of heating with wet heat, it is common to use saturated steam.
[0015]
The roving yarn 2 used in the present invention is obtained by bundling and twisting a large number of spun yarns. Specifically, 5 to 30 spun yarns are bundled and twisted. The number of twists in the twisting is preferably about 10 to 800 turns / m. Further, since the number of twists is relatively large, the twisting direction is preferably the same as the twisting direction of the spun yarn. If the spun yarn is twisted in a direction opposite to the twisting direction, the spun yarn is untwisted, and the split short fibers or ultrafine fibers may be easily removed.
[0016]
The spun yarn used in the present invention is a spun split short fiber. As is well known, a spun yarn is formed by twisting an aggregate of short fibers. That is, a sliver, which is an aggregate of split short fibers, is spun by a conventionally known spinning machine. The thickness of the spun yarn is generally about 5 to 30 count. When the split type short fiber is spun, extra fine fibers are generated to some extent by the external force applied in the spinning process. Further, in order to further promote splitting, after the spun yarn is obtained, the partially split short fibers may be dissolved by alkali reduction treatment or the like. Further, a strong external force may be applied by beating or the like.
[0017]
As described above, the split short fibers constituting the spun yarn are split into a plurality of ultrafine fibers by the application of a physical external force or the like. Such split short fibers have a cross section as shown in FIGS. 2 to 5, for example. FIG. 2 shows a structure in which six microfine fibers made of a polymer B having a circular cross section are embedded around microfibers made of a high molecular polymer A having a substantially circular cross section. FIG. 3 shows a structure in which four ultrafine fibers made of a high molecular polymer B having a leaf-shaped cross section are bonded around a micro fiber made of a high molecular polymer A having a circular cross section. FIG. 4 shows a structure in which eight microfine fibers made of a polymer B having a leaf-shaped cross section are embedded in a matrix made of a polymer A. FIG. 5 shows a cross section in which ten ultrafine fibers made of high molecular polymers A and B each having a wedge-shaped cross section are alternately stuck, and the cross section is circular as a whole. The split staple fibers shown in FIGS. 2, 3 and 5 may be displaced between the ultrafine fibers when a physical external force is applied, such as during a spinning process, a twisting process, or when being cleaned or washed as a mop cord. Are separated from each other, and the fibers are divided into ultrafine fibers. In the splittable short fiber shown in FIG. 4, when the polymer A, which is the base, is dissolved, the ultrafine fiber consisting of the polymer B is split and generated. In the present invention, it is preferable to use, as the splittable short fibers, those shown in FIG. 5, that is, those which produce wedge-shaped ultrafine fibers having a divided cross section. The reason for this is that the ultrafine fiber having a wedge-shaped cross section has a sharp tip, so that it is easy to wipe off dust and the like.
[0018]
As the high molecular polymers A and B constituting the splittable short fibers, conventionally known polymers are used, and they may be the same or different. In particular, it is preferable to use a different kind of high molecular polymer having low compatibility since both are easily separated by a slight external physical force. Specifically, it is preferable to use a polyester as the polymer A and a polyamide as the polymer B. Of course, the polymer A may be a polyamide, and the polymer B may be a polyester. In this case, the ultrafine fibers made of polyester and the ultrafine fibers made of polyamide are generated by splitting the splittable short fibers.
[0019]
The fineness of the split short fibers may be arbitrary, but is preferably such that the fineness of the ultrafine fibers generated by the splitting is 0.2 dtex or less. That is, the split short fiber has, for example, a cross section as shown in FIGS. 2 to 5, and is generally split into five or more splits to produce ultrafine fibers. Therefore, a split short fiber obtained by combining five or more ultrafine fibers of 0.2 decitex or less is preferable. In general, the fineness of the split short fiber is preferably about 1 to 10 decitex.
[0020]
In the mop cord according to the present invention, the above-mentioned splittable short fibers are split to generate ultrafine fibers. As a result, many microfibers exist on the surface of the mop cord. However, the split short fibers generally do not completely split, but generally have some unsplit portions. Therefore, some of the ultrafine fibers present on the surface of the mop cord have free ends, while others have no free ends because both ends are undivided.
[0021]
As described above, the cleaning mop according to the present invention is obtained by sewing a mop cord having microfibers on its surface to a mop base cloth, and satisfactorily cleans an object to be cleaned such as a floor, a wall or furniture. It is possible. Further, the mop cord may be provided with a dust collecting agent or the like that easily adsorbs dust, but in the present invention, even if the dust collecting agent is not provided, the object to be cleaned can be cleaned well. It is a good thing. And it is preferable not to add a dust collecting agent such as oil because the removability of dust by washing is remarkably improved.
[0022]
【Example】
Hereinafter, the present invention will be described based on examples, but the present invention is not limited to the examples. The present invention is based on the finding that a mop cord using a splittable short fiber in a specific configuration is based on the finding that ultrafine fibers generated from the splittable short fiber can be effectively prevented from coming off or cutting. It should be.
[0023]
Example 1
A 20-split short fiber having a cross section as shown in FIG. 5 was prepared. This splittable short fiber uses polyester as the polymer A and polyamide as the polymer B, and has a fineness of 2.8 dtex and a fiber length of 51 mm. The sliver made of the split short fibers was passed through a known spinning machine to obtain a 20th spun yarn. After winding this spun yarn around a bobbin for dyeing at a winding density of 0.32, it is immersed in a caustic soda aqueous solution (liquid temperature 90 ° C.) adjusted to pH 12.5 for 20 minutes to remove the polyester in the split short fibers. Weight was reduced by 8%. Due to this weight reduction treatment, the split short fibers that had been partially split in the spinning step were further split.
[0024]
Thereafter, 25 spun yarns unwound from the dyeing bobbin were bundled and twisted in the Z direction at a twist of 140 turns / m to obtain a roving yarn. Then, between the two rovings, the polyamide copolymer-based multifilament having a fineness of 110 dtex is softened or melted in the range of 130 to 140 ° C (softened or melted in the range of 90 to 110 ° C under wet heat). While sandwiching the heat-fused yarn composed of the filament yarn, the yarn was twisted in the S direction at a twist of 150 turns / m and wound into a skein. Then, in the wound state, heat treatment was performed in saturated steam at about 110 ° C. As a result of this heat treatment, the heat-fused yarn was softened or melted, and the split short fibers and ultrafine fibers constituting the roving were adhered to the heat-fused yarn, thereby fixing the gap between the rovings. As described above, a mop code was obtained.
[0025]
Comparative Example 1
Instead of the 20-split short fibers, non-split polyester short fibers with a fineness of 1.7 dtex, a fiber length of 51 mm and a circular cross section were used, and the mop was performed in the same manner as in Example 1 except that the weight reduction process was not performed. Got the code.
[0026]
[Creating a mop for cleaning]
Using the mop cords obtained in Example 1 and Comparative Example 1, a cleaning mop was prepared as follows. First, a 10 cm × 50 cm mop base cloth was prepared. This mop base cloth is obtained by coating a mesh cloth having a mesh size of 0.7 mm with a resin. A 6 cm long mop cord was sewn to the outer edge of the mop base fabric with a frangifying machine. At the center of the mop base fabric, the mop cord was sewn with a tufting machine so that the loop length was 5 cm at 10 mm intervals. As described above, a cleaning mop having a basis weight of 40 g using the mop cord obtained in Example 1 (hereinafter, referred to as “example mop”), and a basis weight using the mop cord obtained in Comparative Example 1 40 g of a cleaning mop (hereinafter referred to as "comparative mop") was obtained.
[0027]
[Dust collection rate test]
An artificial dust composed of 40% of clay having a particle size distribution of 0.3 to 30 μm and an average particle size of 8 μm, and 60% of fiber scrap having a length of 8 mm and a fiber length of 0.5 decitex was prepared. 2 g of this artificial dust was scattered in the center of an acrylic plate of 100 cm square, and the amount of dust collected by reciprocating the mop of Example 5 times from above was measured. As a result, 1.96 g of artificial dust was collected, and the dust collection rate was 98%.
On the other hand, when the dust collection rate was measured and calculated in the same manner using the comparative example mop in place of the example mop, the result was 60%.
Therefore, the example mop has an excellent dust collection rate because the microfibers derived from the split short fibers are present on the mop cord surface.
[0028]
[Dust detachment rate test]
According to the above test, the mop of the example, which collected 1.96 g of artificial dust, was washed with a household washing machine by adding 2 g / l of household detergent. After washing, the sample was dried at 80 ° C. for 20 minutes using a tumbler drier to regenerate the mop of Example. The amount of artificial dust adhering to the regenerated example mop was about 0.25 g. Therefore, the amount of artificial dust detached by washing was about 1.71 g, and the dust detachment rate was about 87%.
On the other hand, the dust removal rate of the comparative mop was measured and calculated in the same manner, and it was about 35%.
The reason why the dust removal rate of the example mop is higher is not clear, but in the case of the example mop, dust is trapped between the ultrafine fibers present on the surface of the mop cord, whereas, in the case of the comparative example mop This is considered to be because the microfibers did not exist on the surface of the mop cord, and the dust entered the mop cord and was caught.
[0029]
[Action]
The smallest constituent unit constituting the mop cord according to the present invention is an ultrafine fiber. The ultrafine fibers are derived from split short fibers. The split short fibers are split to produce ultrafine fibers, but are not completely split. In particular, as in the case of the present invention, when a spun yarn is made of splittable short fibers, the splittable short fibers are in close contact with each other and are originally difficult to split. Therefore, even if the ultrafine fibers are generated, there is an undivided portion near the fiber axis. That is, the fiber length of the generated ultrafine fibers is shorter than the fiber length of the split short fibers. Therefore, it is considered that the ultra-fine fibers are hard to be cut due to the short fiber length and are constrained by the undivided portions, and that fiber scrap is unlikely to be generated due to friction at the time of cleaning.
[0030]
The mop cord according to the present invention uses a heat-fused yarn, and there are portions where the split short fibers and the ultrafine fibers are bonded and fixed to the heat-fused yarn. When there is an adhesively fixed portion, the roving is less likely to be untwisted, thereby making it difficult for the split short fibers and the ultrafine fibers to escape from the mop cord. Therefore, it is considered that this adhesive fixation hardly generates fiber waste due to the breakout of the split short fibers and the ultrafine fibers during cleaning.
[0031]
【The invention's effect】
Since the cleaning mop according to the present invention uses a mop cord having the above-described action, the microfibers are excellent in wiping of dust and the like, and the generation of fiber debris due to the cutting or loosening of the ultrafine fibers. The effect is that there is little.
[0032]
Further, when dust and the like are wiped off by the fine fibers present on the surface of the mop cord of the cleaning mop, the dust and the like are captured by the fine fibers on the surface of the mop cord. That is, dust and the like do not enter the inside of the mop cord, but tend to stay on the surface thereof. Therefore, washing the cleaning mop has a particularly remarkable effect that dust and the like can be easily removed.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of a mop cord according to the present invention.
FIG. 2 is an example of a cross section of a split short fiber used in the present invention.
FIG. 3 is an example of a cross section of a split short fiber used in the present invention.
FIG. 4 is an example of a cross section of a split short fiber used in the present invention.
FIG. 5 is an example of a cross section of a split short fiber used in the present invention.
[Explanation of symbols]
1 mop cord 2 roving yarn 3 heat fusion yarn

Claims (5)

In a cleaning mop in which a mop cord is sewn to a mop base cloth, the mop cord is provided with a heat-fused yarn disposed between several rovings, twisted, and softened. Alternatively, the rovings are bonded and fixed by melting, and the rovings are formed by bundling and twisting a large number of spun yarns obtained by spinning splittable short fibers. A cleaning mop characterized in that ultrafine fibers generated by splitting short fibers are present. The cleaning mop according to claim 1, wherein a split type short fiber having a wedge-shaped cross section is used. 2. The cleaning mop according to claim 1, wherein a split short fiber obtained by combining ultrafine fibers made of polyester and ultrafine fibers made of polyamide is used. 2. The cleaning mop according to claim 1, wherein the mop cord is not provided with a dust collecting agent. A mop cord in which a heat fusion yarn is arranged and twisted between several roving yarns, and the roving yarns are adhered and fixed by softening or melting of the heat fusion yarn. However, it is characterized in that it is obtained by bundling and twisting a large number of spun yarns that are spinning splittable short fibers, and on the surface thereof, there is an ultrafine fiber generated by splitting the splittable short fibers. Mop code.

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