JP2002010959A - Wiping instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiping instrument provided with a stain wiping property, durability, a draining property after use and a drying property, etc. SOLUTION: This wiping instrument is a fiber aggregate whose density is 0.01-0.10 g/cm3 for which fibers are partially adhered to each other. A rugged part is formed on at least a part of the surface of the fiber aggregate and the difference of the height between the recessed part and the projected part adjacent to each other of the rugged part is 0.5 cm or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dirt wiping tool used for household or industrial use.
Good wiping of dirt, drainage after use,
The present invention relates to a fibrous wiping tool having excellent drying properties.

[0002]

2. Description of the Related Art Conventionally, a so-called sponge made of scourer or foamed polyurethane, a so-called sponge made of foamed polyurethane, or a nylon fiber non-woven fabric has been used as a material for wiping tools used in water areas such as kitchens, washrooms, baths, toilets, window glasses or furniture furniture. Those impregnated with a resin or the like, and those wrapped in a net-shaped knitted fabric have been used. These have come in handy as they are,
It was not satisfactory in terms of drainage and drying after use.

[0003]

SUMMARY OF THE INVENTION In view of the background of the prior art, an object of the present invention is to provide a wiping tool having both wiping property of dirt, durability, draining property after use, and drying property. .

[0004]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the wiping tool of the present invention has a density of 0.0
1 to 0.10 g / cm ³ , a fiber assembly in which fibers are partially adhered to each other, wherein at least a part of the surface of the fiber assembly has an uneven portion; The difference between the heights of adjacent concave portions and convex portions is 0.5 cm or more.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been studied diligently with respect to the above-mentioned objects, that is, a wiping tool having both wiping property of dirt, durability, drainage property after use, and drying property. When the specific irregularities were given to the specific fiber assembly, it was found that the unexpected problem could be solved at once.

The main fiber material used for the fiber assembly used in the wiping tool of the present invention includes, for example, natural fibers such as cotton, hemp and wool, chemical fibers such as rayon and acetate, polyesters, polyamides and acrylics. Although any of synthetic fibers such as polypropylene and polyethylene can be used, it is most preferable to use polyester fibers because of the high hardness of the fibers themselves, durability, recyclability, economy, etc. .

The fiber assembly used in the wiping device of the present invention must have a density of 0.01 to 0.10 g / cm ³ and have fibers partially adhered to each other. 0.01 g / c
If it is less than m ^3, it is difficult to maintain the form, which is not preferable in terms of wiping properties and durability. 0.10g /
If it exceeds cm ³ , the fiber density becomes too high, it becomes difficult to process, and it is difficult for water to escape, so that it tends to be unsanitary, and both are not suitable as wiping tools. A fiber aggregate of preferably 0.02 to 0.04 g / cm ³ is suitable as a structure of a wiping tool because it easily absorbs moisture and has a stable form.

[0008] The wiping implement of the present invention needs to have an uneven portion on a part of the surface of the fibrous structure. Due to the presence of the uneven portion, the surface area of the wiping tool increases with respect to the object to be cleaned to which dirt and the like are attached, and the wiping effect can be easily changed depending on the state of pressure. If the surface is not to be damaged, it can be wiped efficiently by rubbing firmly against stubborn dirt.

Here, the difference between the height of the concave portion and the height of the convex portion adjacent to the concave / convex portion must be 0.5 cm or more, preferably 1 cm or more. That is, if the difference is less than 0.5 cm, the above-described effect of the unevenness is difficult to exert.

The number of projections of the wiping tool of the present invention is preferably 50 to 2000 / m ² , more preferably 100 to 1 / m ² .
It is good to be 000 / m ² . That is, the repetitive surface of the projections and the depressions makes the wiping effect more excellent.

The fineness of the fibers of the fiber assembly used in the wiping device of the present invention is not particularly limited, but is preferably 1 to 100 dtex, more preferably 5 to 50 dtex.
tex. If it is less than 1 dtex, the wiping efficiency is reduced. If it exceeds 100 dtex, the number of fibers constituting the fiber is small, the bonding point is relatively reduced, and the durability of use as an aggregate is reduced.

The average fiber length of the fibers of such a fiber assembly is
Although not particularly limited, preferably 10 to 150
mm, more preferably 30 to 70 mm. 10m
If it is less than m, the entanglement between the fibers will be poor, and the durability in use as a wiping tool will tend to be reduced,
If it exceeds m, the fibers are too entangled in the production of the fiber aggregate, so that the fiber opening and blending properties deteriorate, and it is difficult to obtain a fiber having a uniform density.

[0013] Further, the form of crimping of the fibers of the fiber assembly is not particularly limited, but the bulkiness, softness, and recoverability to compression of the fiber assembly are improved, and the fiber wiping tool is used. From the viewpoint of improving handling and wiping properties, a spiral crimp type is preferable to a mechanical crimp type.
The number of crimps is preferably 3 to 50 ridges / 25 mm, more preferably 5 to 20 ridges / 25 mm, and the degree of crimp is preferably 5 to 100%, more preferably 10 to 50%.

The cross-sectional shape of the fibers of the fiber assembly may be any of a normal round cross-section, an irregular cross-section such as a T-shape, a flat cross-section, or a hollow cross-section.

[0015] The method of forming the irregularities constituting at least a part of the wiping tool of the present invention is not particularly limited. For example, when forming a fiber aggregate, raw cotton is packed into a mold having a large number of irregularities and compressed / compressed. It may be obtained by heat molding, or may be obtained by compressing / heating molding a laminated web obtained from raw cotton with a perforated plate such as a punching metal. Preferably, a fiber assembly obtained by compression / heating molding or the like is once cut out to form an uneven portion.

That is, a fiber assembly formed in a flat plate shape is partially divided in the thickness direction by a so-called profile processing machine having a pair of compression rollers, having a large number of angular compression portions, and devising their shapes. It is preferable to cut and form the uneven portion by cutting in a state of being compressed. The uneven portion obtained in this way, including the uneven portion, tends to have a constant density of the fiber aggregate, and because of the cut-out, the eyes are less likely to be clogged as compared with the case where the uneven portion is formed by molding, and the wiping effect is obtained. Shows a tendency to be good.

Here, the fiber delamination strength of the fiber assembly used in the wiping tool of the present invention is preferably 0.1 N / cm or more, more preferably 0.4 N / cm or more. This is a factor that affects the durability of use as a wiping tool, and if it is less than 0.1 N / cm, it is easy to peel off when performing draping such as profile processing, and the quality after processing deteriorates. The protruding portions are severely peeled off and tend not to be used as a wiping tool.

The fiber assembly used in the wiping tool of the present invention is composed of two or more types of fibers, and one type thereof is
Fibers having a lower melting point than other fibers, and those having a low melting point and partially fused between the fibers, are preferably used.

The melting point of these fibers having a low melting point may be attained by obtaining a sufficient thermal adhesiveness between the fibers or performing an unnecessarily high-temperature heat treatment because the fibers are heat-bonded by heat treatment in the production of the fiber assembly. In order to avoid the above, it is preferably 20 ° C. or more, more preferably 80 to 1
Those 70 ° C. lower are preferred.

Further, the fibers having a low melting point constitute fibers having a low melting point in order to prevent the fibers from being pulverized by the action of compression or rubbing when a wiping tool using a fiber assembly is used. Composite fibers obtained by combining a thermoplastic polymer with a sheath component and a thermoplastic polymer with a melting point higher than that by 20 ° C. or more with a core component are preferably used.

In such a conjugate fiber, the weight ratio represented by the core component / sheath component is from 20/80 to 60/40 from the viewpoint of obtaining sufficient thermal adhesiveness between the fibers and the durability of use.
Are preferred. Such a conjugate fiber can be produced by ordinary conjugate spinning.

The sheath component is not particularly limited, but in the case of polyester fiber, polyethylene terephthalate obtained by copolymerizing isophthalic acid is usually used.

The fiber assembly used in the wiping tool of the present invention is composed of a mixture of fibers having a low melting point and other fibers, but the ratio is not particularly limited, but the ratio is not particularly limited. Preferably, the fiber is 20 to 60% by weight and the other fibers are 40 to 80% by weight. When the fiber having a low melting point is less than 20% by weight, the number of heat bonding points between fibers having a low melting point and between the fiber having a low melting point and other fibers is reduced, and the durability for use as a wiping tool is likely to be deteriorated. If it exceeds 60% by weight, the soft feeling tends to decrease, and the handling and wiping properties tend to decrease.

The fiber arrangement of the fiber assembly used in the wiping tool of the present invention is, for example, a method in which fibers used are mixed and spread, a plurality of webs made of cards are laminated, and heat treatment is performed in a state where the web is compressed to a desired density. / A structure obtained by cooling and melting and bonding with a fiber having a low melting point in the fibers used, that is, a structure in which the fiber directions are aligned in a substantially constant direction within one layer, but preferably a fiber assembly It is preferable that fibers constituting one cross section plane are arranged almost without directionality. Such a fiber aggregate is used, for example, by blending / spreading the fibers to be used, blowing them into a desired mold by pressurized air or the like, and then heat-treating / cooling the filled cotton lumps in a compressed state. It can be obtained by fusion bonding with fibers having a low melting point in the fibers. At this time, since the fiber mass is blown and filled, when compressed, the fiber mass flattens in parallel with the compression axis direction, and the fibers are arranged at random in a flattened plane.

The fiber assembly having such a structure enhances compression recovery and rebound, exhibits good flexibility in the vertical axis direction with respect to one cross section of the fiber assembly described above, and has a layered structure. It has the property of being difficult to peel off, and is likely to be a factor in improving the handleability and wiping properties of the wiping implement.

The wiping device of the present invention can also impart antibacterial and antifungal properties. The antibacterial performance and anti-mite performance can be achieved by using antimicrobial fibers and anti-mite fibers for the fibers constituting the fiber structure, or by performing antimicrobial or anti-mite processing.

Further, the wiping device of the present invention may be laminated with an aggregate different from the fiber aggregate used in the present invention. For example, urethane or the like can be adhered to the opposite surface on which the uneven portion is formed, and stubborn dirt can be wiped off with the fiber assembly of the present invention, and when soft wiping is desired, urethane can be used properly.

[0028]

The present invention will be described in more detail by way of examples.

The evaluation method used in the present invention will be described. Evaluation methods not described here are basically J
Follow the method specified in IS.

Delamination strength: A test piece having a width of 5 cm was cut so as to be peeled to the middle part of the thickness, the both ends were grasped and peeled to tear, and the maximum strength (N) was calculated by the following equation. .

Delamination strength (N / cm) = Maximum strength (N) / Specimen width (cm) Tester Constant-speed elongation type tensile tester Grasping interval 10 cm Tensile speed 20 cm / min Example 1 First, a fiber assembly was prepared. It was created as follows.

As the fibers to be used, raw polyester staple cotton (13 denier, fiber length 64 mm, hollow cross section, number of shrinkage of 8 threads / 25 mm, degree of shrinkage of 20%, shrunk three-dimensionally)
And a polyester staple core-sheath type composite fiber as an adhesive fiber (a polyester having a core portion and a polymer having a melting temperature of 110 ° C. made of polyester of isophthalic acid copolymer in the sheath portion, 4 denier, fiber length 51 mm) ) Was prepared.

The former and the latter were determined to be 70/3.
0 at the ratio, after blending / opening with a roller card,
After blowing into the mold together with the air flow, it is compressed and
Heat treatment / cooling at a temperature of ° C, density 0.030 g / cm ³
A fiber assembly having a length of 100 cm, a width of 100 cm and a height of 50 cm was prepared. One cross section (abcd) of the fiber aggregate in which the fiber axis directions of the fibers were arranged substantially randomly was a vertical and horizontal surface. The delamination strength is 1 N / cm
Met.

This fiber assembly was cut into a thickness of 8 cm in parallel with the vertical × height plane, and further cut into an uneven shape by a profile processing machine to have a thickness of 5 cm and a thickness of the recess of 3 c.
m, the number of protrusions was 500 / m ² , and a wiping tool of the present invention having a length of 15 cm and a width of 8 cm was prepared.

When this wiping tool was used for rough dishware in the kitchen, it was found that the surface was uneven, so that dirt was easily removed and the use durability was excellent. Further, the uneven surface was easy to bend, so that it was easy to hold and the handleability was good.

Example 2 As the fibers to be used, polyester staple raw cotton (3
0 denier, fiber length 64mm, triangular cross section, ken shrinkage 8 peaks /
Polyester staple core-sheath type composite fiber (polyester is used for the core, polyester of isophthalic acid copolymer is used for the sheath, and the melting temperature is 110 ° C.) , 4 denier, fiber length 51 mm).

The former and the latter were determined to be 70/3.
0 at the ratio, after blending / opening with a roller card,
After blowing into the mold together with the air flow, it is compressed and
Heat treatment / cooling at a temperature of 0.025 g / cm ³
A fiber assembly having a length of 100 cm, a width of 100 cm and a height of 50 cm was prepared. One cross section of the fiber aggregate in which the fibers were arranged almost without direction was a surface formed from the vertical and horizontal axes. The delamination strength was 0.8 N / cm.

This fiber assembly was cut into a thickness of 8 cm in parallel with the vertical × height plane, and further cut into a concave and convex shape by a profile processing machine.
m, 1000 pieces / m ² , vertical 15 cm, horizontal 8
cm of the wiping device of the present invention.

When this wiping tool was used for rough dishware in the kitchen, it was found that the fineness of the constituent fibers was so large that the stains were easy to remove, and the use durability was excellent.

[0040]

According to the present invention, it is possible to provide a wiping tool having both wiping property of dirt, durability, drainage property after use, drying property and bending property.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a wiping tool of the present invention from a horizontal direction.

[Description of Signs] 1 convex portion 2 concave portion

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B074 AA02 AB01 3B154 AA07 AB22 AB23 BA25 BB54 BF06 BF11 BF18 DA09 DA16 DA30 4L047 AA21 AA27 AB02 BA09 BB06 BB09 CA12 CB10 CC16

Claims (7)

[Claims] (1) a density of 0.01 to 0.10 g / cm ³ ,
A fiber assembly in which fibers are partially adhered to each other, and has at least a portion of the surface of the fiber assembly with an uneven portion, and a height of a concave portion and a convex portion adjacent to the uneven portion. A wiping tool characterized in that the difference is 0.5 cm or more. 2. The wiping device according to claim 1, wherein said uneven portion is formed by cutting out. 3. The wiping tool according to claim 1, wherein the number of the protrusions is 50 to 2,000 / m ² . 4. A fiber assembly having a delamination strength of 0.1 N /
The wiping tool according to any one of claims 1 to 3, wherein the wiping tool has a diameter of at least 1 cm. 5. The fiber assembly according to claim 1, wherein the fiber assembly is composed of two or more types of fibers, one of which has a lower melting point than the other fibers, and is partially melt-bonded between the fibers. Item 1
A wiping tool according to any one of claims 1 to 4. 6. The wiping tool according to claim 1, wherein the fibers constituting the fiber assembly are arranged in a plane of one cross section thereof with almost no directionality. 7. The wiping tool according to claim 1, wherein the fiber aggregate is made of a polyester fiber.