JPH05245090A - Cleaning product and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a cleaning product and the manufacture thereof which excels in a dust catching capacity in a wide range from stains such as fine dust to relatively large stains such as bread dust while the catching capacity is free from the shape of a surface to be cleaned. CONSTITUTION:In a cleaning product 10A, nonwoven fabric 12 formed by interlacing fibers on one side or both sides of a base sheet 11 is joined integral partially. The fabric 12 has the parts joined to form a recessed part 12B while non-joined parts form protruded parts. Thus, the cleaning sheet 10A having a shape of combining recesses and protrusions as a whole is produced and an oil component is carried on the fabric at a rate of 0.1-80% per weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial or household cleaning article using a nonwoven fabric and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, many cleaning articles based on a fibrous material have been proposed as cleaning tools. For example,
Wet or dry cleaning wipes based on woven or non-woven cloth, chemical wipes made by impregnating a flat woven or non-woven cloth with an oily substance, or bundles of thread-like typified by mops Some of them are used in a wet or dry state, and these cleaning articles are widely used in homes, offices, stores, buildings, factories, etc. according to the purpose.

On the other hand, a cleaning article made of a flat sheet such as a chemical rag has a drawback in that it has a poor wiping property in uneven portions as compared with a mop-like cleaning article. In order to solve such a defect, Japanese Patent Laid-Open No. 64-61546 discloses that a nonwoven fabric as a cleaning article is provided with a three-dimensional shape, and after the nonwoven fabric is formed, gathering is provided by stitching with a thread having elasticity. The technology is disclosed. Further, Japanese Patent Application Laid-Open No. 2-160962 discloses a technique in which a cleaning sheet (cleaning article) is three-dimensionalized by gathering using elastic fibers to improve the wiping performance over a flat sheet. .. Furthermore, JP-A 2-12
Japanese Patent No. 4122 and Japanese Unexamined Patent Publication No. 2-99641 disclose a technique in which the cleaning sheet surface is raised to improve the wiping property.

[0004]

However, the above-mentioned sheet-shaped or mop-shaped cleaning article has the following problems. Generally, a mop-shaped cleaning article is effective for relatively large dust such as bread chips existing on the surface to be cleaned. For example, as described in JP-A-53-144156, a mop cord and A relatively large amount of dust can be captured and captured between the mop cords. However, since such dust is not entangled in the fibers that make up the mop cord, there are drawbacks such as the falling of the dust that is caught when the mop is lifted, as well as the fact that a large amount of base material is required and the operation during cleaning. It is inferior to a simple sheet-like material in terms of cleaning properties, and is inferior to a sheet-like material in cleaning properties such as a wall or ceiling.

Further, although a sheet-like material such as a non-woven fabric to which a three-dimensional shape is imparted by stitching or the like is relatively insensitive to the shape of the surface to be cleaned, it is difficult to control the shape enough to deal with a wide range of the surface to be cleaned. Moreover, there is a problem in that the degree of freedom of the constituent fibers is reduced by the stitches, so that the ability to collect yarn waste, cotton dust, etc. is reduced. Furthermore, since any of the above-mentioned methods causes anisotropy in the sheet wiping direction, dust cannot be effectively captured. Further, there is a problem that the holding ability is low for relatively large dust such as bread crumbs. That is, even if the effect of wiping off fine dirt such as sand dust is improved, there is a problem that relatively large dust cannot be trapped and left behind.

Therefore, the object of the present invention is to collect dust in a wide range from fine dirt such as dust to relatively large dirt such as bread crumbs, and the collecting ability depends on the shape of the surface to be cleaned. An object of the present invention is to provide a cleaning article that is hard to be damaged and a manufacturing method thereof.

[0007]

According to the present invention, a non-woven base fabric formed by entanglement of fibers is integrated on one or both sides of a base sheet by partial bonding.
The base cloth is a cleaning article in which the joint portion forms a concave portion, the non-joint portion forms a convex portion, and the surface has an uneven shape as a whole, and the oil agent component is relative to the weight of the base cloth. The object described above is achieved by providing a cleaning article characterized by being carried by 0.1 to 80%.

The present invention also provides a suitable method for producing the above-mentioned cleaning article, in which the base cloths arranged on one or both sides of the heat-shrinkable base sheet are partially joined and integrated, The base sheet is heat-treated to be heat-shrinked to form a concave portion in the joint portion and a convex portion in the non-joint portion to form a cleaning article having an uneven surface as a whole, and the cleaning is performed. The present invention also provides a method for producing a cleaning article, which comprises impregnating the cleaning article with an oil agent component before or after the heat treatment of the cleaning article.

Furthermore, the present invention provides a method for producing the cleaning article described above, in which a base cloth is impregnated with an oil component, and the base cloth is placed on one or both sides of a heat-shrinkable base sheet. After the base cloth and the base sheet are partially joined and integrated, the base sheet is heat-treated to be heat-shrinked to form a concave portion in the joint portion and a convex portion in the non-joint portion. The present invention also provides a method for manufacturing a cleaning article, which comprises forming a portion and forming a cleaning article having an uneven surface as a whole.

In the present invention, the base sheet refers to a sheet having no shrinkable holes, and particularly Japanese Patent Application No. 3-29748.
This is a concept excluding the mesh sheet or perforated sheet described in No. 9.

[0011]

Since the cleaning article of the present invention has a large number of flexible uneven shapes on the wiping surface, which is the base cloth, it easily fits the shape of the surface to be cleaned and hardly causes unwiping residue. The cleaning article of the present invention has a base cloth made of a non-woven fabric, which is partially joined to the base sheet to be integrated to give a large number of uneven shapes to the wiping surface of the base cloth, which makes the article bulky. By carrying a fixed amount of oil agent component, from a small dust to a relatively large dust such as bread crumbs and hair, a wide range of dust is reliably collected.

Since the cleaning article of the present invention has a large number of flexible uneven shapes on the wiping surface which is the base cloth, it easily fits the shape of the surface to be cleaned having a complicated uneven surface, and the unwiping residue remains. Is hard to occur.

[0013]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a plan view showing a cleaning sheet according to the first embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a part of the cleaning sheet shown in FIG. 1 by cutting.
FIG. 3 is a schematic view showing the entire cleaning sheet manufacturing apparatus of the first embodiment. FIG. 4 is an enlarged perspective view showing the cleaning sheet of the second embodiment by cutting a part thereof. FIG. 5 is a plan view showing the cleaning sheet of the third embodiment. 6 is shown in FIG.
It is an expanded perspective view which cuts and shows a part of cleaning sheet shown in FIG. FIG. 7 is an enlarged perspective view showing a part of the cleaning sheet of the fourth embodiment by cutting it. FIG. 8 is a plan view showing the cleaning sheet of the fifth embodiment. FIG. 9 is a plan view showing the cleaning sheet of the sixth embodiment.

First, a cleaning sheet (cleaning article) 10A according to a first embodiment of the present invention will be described with reference to FIGS. In the cleaning sheet 10A of the present invention, a base cloth 12 made of a non-woven fabric formed by entanglement of fibers is partially joined and integrated on one side or both sides of the base sheet 11, and the above-mentioned base cloth is formed. 12 has a concave portion 1 at its joint portion.
2B is formed, the non-bonding portion forms a convex portion, and the cleaning sheet 10A has an uneven shape as a whole, and the oil agent component is supported by 0.1 to 80% of the weight of the base cloth 12. Further, on the outer side of the base fabric 12, a nonwoven fabric net 16 integrated by entanglement of fibers having a larger interfiber distance than the base fabric 12 is laminated.

A heat-shrinkable sheet is used as the base sheet 11, for example, polyethylene, polypropylene,
Polyolefin resins such as polybutene, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, vinyl resins such as polyvinyl chloride, vinylidene resins such as polyvinylidene chloride, modified products of these synthetic resins, and mixtures of two or more thereof. A film or sheet made of a composite material or the like using these synthetic resins, which contracts in the uniaxial or biaxial direction to form the convex portion 12 on the base cloth 12.
Those having a contracting force for forming A and the concave portion 12B are preferable.

The thickness of the base sheet 11 depends on the shrinkage force and the shrinkage rate of the uneven shape, the degree of unevenness, and the base cloth 12.
It can be set as appropriate in consideration of the partial joining workability and the like. The base fabric 12 is a non-woven fabric and is not particularly limited as long as it is integrated by entanglement of the constituent fibers, but the constituent fibers are entangled with each other rather than the constituent fibers are fused or adhered to each other. It is preferable to use a formed fiber having a high degree of freedom in capturing fine dust or the like between the fibers, but if the degree of freedom of the formed fiber is too high, the formed fiber may fall off, which is preferable. Absent.

The base cloth 12 is composed of entangled fibers, and fine dust adhering to the surface to be cleaned is trapped between the constituent fibers. Furthermore,
Rigid and relatively long hair such as hair can be captured by entanglement with the constituent fibers of the nonwoven fabric. Examples of the constituent material of the base cloth 12 include synthetic fibers such as polyester fibers, polyamide fibers, polyolefin fibers, acrylic fibers, and composite fibers using resins of these fibers,
Semi-synthetic fibers such as acetate fibers, regenerated fibers such as cupra and rayon, natural fibers such as cotton, hemp, and wool, or mixed cotton are used. The base sheet 11 and the base cloth 12 are joined by heat treatment such as a heat roll. Is preferable in that the adhesiveness due to the presence of the thermoplastic fiber is enhanced.

It is preferable that these constituent fibers have a high degree of freedom, but in the case of forming the base fabric 12, in order to prevent a large amount of fluff coming off and to increase the practical strength, a binder fiber or the like is mixed to form a constituent fiber. Part of them may be fused or adhered.
Further, it is possible to prevent the fibers from falling off by using an appropriate amount of powder bond. However, it is necessary to set in consideration of the fine dust trapping ability and the strength of the base cloth 12.

The basis weight of the base fabric 12 can be set in consideration of the degree of entanglement of the constituent fibers, strength, workability, cost, etc., but is preferably in the range of 30 to 150 g / m ^2. .. If it is less than 30 g / m ² , the entanglement degree and strength are not sufficient, and if it exceeds 150 g / m ² , the cost may be increased, which is not preferable. The constituent fibers of the base fabric 12 preferably have a fineness in the range of 0.5 to 6.0 denier.
If the fineness is less than 0.5 denier, the web-forming ability of the fibers becomes poor, and if it exceeds 6.0 denier, the fibers are not easily entangled with each other, and the fine dust trapping ability becomes poor, which is not preferable.

The base cloth 12 has the lattice-shaped joint portion 1
The non-bonded portion with the base sheet 11 surrounded by 3 is
It is formed as a convex portion 12A, and an uneven shape is formed on the cleaning surface of the cleaning sheet as a whole. The large number of convex portions 12A and the concave portions 12B between them form a highly cushioned cleaning surface, and form a cleaning surface that is not easily influenced by the shape of the surface to be cleaned.

Concavo-convex portions 12A, 12 formed on the cleaning surface
The size of B is preferably 1 to 30 mm from the center of the base sheet 11 to the center of the base cloth 12. If it is less than 1 mm, the cushioning property and the fitability of the surface to be cleaned are poor, and if it exceeds 30 mm, a large amount of base cloth is required and the cost becomes high, which is not preferable. Incidentally, a slit opening 12C as shown in a third embodiment described below may be formed in the convex portion 12A.

As shown in FIG. 2, a non-woven fabric net 16 having a large inter-fiber distance is arranged on the outer side of the base fabric 12 (on the side opposite to the base sheet 11), and the non-woven fabric net 16 is formed at the joint portion 13. It is partially joined to the base cloth 12. That is, the non-joint portion between the base sheet 11 and the non-woven fabric net 16 is formed as the convex portion 12A, and the joint portion 13 is formed as the concave portion 12B. Then, a cleaning surface having a high cushioning property is formed with the base cloth 12. By arranging the non-woven net 16 in this manner, relatively large dust such as bread crumbs can be effectively captured.

The joint portion 13 in which the base sheet 11 and the base cloth 12 are partially joined has a continuous dot pattern and is formed in a lattice shape as a whole as shown in FIG. This base sheet 11, base cloth 12 and non-woven net 1
The joint portion 13 with 6 may have a shape such that the convex portion 12A can be formed by the base cloth 12 alone or the base cloth 12 and the non-woven cloth. As for the joining method, joining by dots is more advantageous than joining by lines.

The smaller the size of the dots at the joint portion 13, the better the flexibility. Therefore, the dot area and the number of the joining portions are taken into consideration in the range where the base sheet 11, the base cloth 12, and the non-woven fabric net 16 are joined with practical strength. The nonwoven fabric net 16 needs to have a larger interfiber distance than the nonwoven fabric used for the base fabric 12. The type and the fineness of the constituent fibers are the same as those of the base cloth 12 described above,
The entanglement of fibers is preferably performed by applying a water stream to the web. At this time, the degree of entanglement generally correlates with the dust trapping property. Further, the strength of the nonwoven fabric changes depending on the type, physical properties, basis weight, etc. of the constituent fibers.

The inter-fiber distance (a) defined by the following equation (1) has a great influence on the strength of the nonwoven fabric.

[0026]

## EQU1 ## a = (DV / 9000W) ^1/2 (1) where D: fineness (d) V: volume of nonwoven fabric (m ³ ) W: weight of nonwoven fabric (g) where: The volume V can be obtained from the thickness and area when no load is applied.

If the inter-fiber distance is too large, the strength will be weakened, and if the inter-fiber distance is too small, the degree of freedom of the fibers will be lowered and the entanglement with relatively large solid matter such as bread crumbs will be deteriorated. Specifically, the inter-fiber distance of the base cloth 12 is 80 μm or less, the inter-fiber distance of the non-woven net 16 is 50 μm or more, and the inter-fiber distance of the base cloth and the net-like material is expressed by the following equation (2). It is necessary to be.

Inter-fiber distance of the base cloth 12 <inter-fiber distance of the non-woven net 16 (2) Further, there are no restrictions on how to open the eyes of the non-woven net 16.
The locations of the fibers and the locations of the pores may be regular, or the constituent fibers of the non-woven fabric may be present randomly. However, if the opening is too large, relatively large dust such as bread crumbs is less likely to be entangled, and if the opening is too small or the basis weight is large, the wiping effect of the base cloth 12 may be impaired. There is a need to. Further, the non-woven net 16 is formed by laminating the constituent fibrous web of the non-woven net 16 on the surface of the base cloth 12 in a pattern such as a stripe shape or a lattice shape, and then by a method such as water jet entanglement (water needling). Alternatively, the non-woven net 16 may be formed.

Further, since the non-woven fabric net 16 has a relatively large distance between fibers, the strength of the non-woven fabric is low, and lint (thread waste) may occur. Therefore, in order to improve the strength without deteriorating the surface characteristics of the non-woven fabric net 16, there is almost no heat-melting fiber such as binder fiber on the cleaning surface, and the surface opposite to the cleaning surface, that is, the base cloth 12 side. It is preferable that the surface is bonded with sufficient heat-sealing fibers.

Specifically, the non-woven fabric net 16 is obtained by laminating a fibrous web layer A containing heat-sealing fibers and a fibrous web layer B containing no heat-sealing fibers, that is, a fiber having a sufficient cleaning property, Entangled and integrated by the method of water jet entanglement. At this time, in a general method such as water jet entanglement, the web layer A and the web layer B are rarely completely randomly intermingled, and the entangled state or the like can be selected by adjusting the water pressure or the like of the water jet entanglement. Good.

After that, a part of the constituent fibers of the fibrous web layer B is joined by heat-bonding fibers contained in the fibrous web layer A by heat treatment. The openings may be formed by partially punching the nonwoven fabric or the like. When the nonwoven fabric is formed by the water jet entanglement method, when the fibers are entangled with the web, the net of the support is rough. It may be formed by using a mesh.

The size of the cleaning sheet 10A of the present invention may be appropriately set depending on the surface to be cleaned, the area to be cleaned, the shape, etc., but the length of one side orthogonal to the wiping direction when the present invention is used. The length is 5 to 150 cm, preferably 10 to 140 cm for home use and 10 to 150 cm for business use. The cleaning sheet 10A is shown in FIG.
As shown in FIG.
However, the free end region 14 is preferably in the range of 1/30 to 1/2 of the size of the body 15 outward from the boundary of the body 15. If it is less than 1/30 or more than 1/2, it is not preferable because the fitting property to a place such as a corner formed by the surface to be cleaned is deteriorated and the dust trapping property is deteriorated.

The oil agent component carried on the cleaning sheet 10A preferably contains at least one of mineral oil, synthetic oil, silicone oil and surfactant. As the mineral oil, paraffin hydrocarbons, naphthene hydrocarbons, aromatic hydrocarbons and the like are used. As the synthetic oil, alkylbenzene oil, polyolefin oil, polyglycol oil, etc. are used, and as the silicone oil, chain dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylhydrogenpolysiloxane, various modified silicones, etc. are used.

The above-mentioned surfactants are, as a cationic system,
Quaternary ammonium salt type and the like are preferable, and examples of the nonionic type include polyethylene glycol type and polyhydric alcohol type. Viscosity of the above oil agent components (25 ° C)
Is preferably 5 to 1000 cps, particularly preferably 5 to 200 cps. If it is less than 5 cps, the dust adsorption is poor, and if it is more than 1000 cps, the oil component is difficult to spread evenly on the fiber, and the coefficient of friction with the cleaning surface increases, which may cause damage to the cleaning surface. Surface tension (25
C.) is preferably 15 to 45 dyn / cm, particularly preferably 20 to 35 dyn / cm. If it is less than 15 dyn / cm, the dust adsorption is poor, and if it is more than 45 dyn / cm, it becomes difficult to spread it evenly on the fibers constituting the nonwoven fabric.

The amount of the oily substance supported is 0.1 to 80%, preferably 0.5 to 40%, and particularly preferably 1 to 20% with respect to the weight of the base cloth 12. , Dust absorption ability and dust retention ability can be increased. This is because if the amount of the oil agent component carried is less than 0.1, the dust absorption and dust holding ability will not be sufficiently increased by the addition of the oil agent component, and if it is more than 80%, the stickiness to the hand will be significantly deteriorated.

As described above, the oil component is a mineral oil,
It is preferable to include at least one or more of synthetic oils, silicone oils, and surfactants, but their proportions and types,
The viscosity, surface tension and the like of the oil agent component are appropriately determined depending on the purpose of cleaning and the type of constituent fibers of the nonwoven fabric. Next, a preferred embodiment of the method for manufacturing the cleaning sheet (cleaning article) 10A according to the present invention will be described.

The manufacturing method of the present invention, as shown in FIG.
After the base cloth 12 is partially bonded and integrated on one surface or both surfaces (one surface in this embodiment) of the heat-shrinkable base sheet 11, the base sheet 11 is heat-treated to be heat-shrinked.
The concave portion 12B is provided at the joining portion and the convex portion 1 is provided at the non-joining portion.
2A is formed to form a cleaning sheet having an uneven surface as a whole, and the cleaning sheet is impregnated with an oil agent component before or after the heating treatment of the cleaning sheet.

First, the base cloth 12 wound into a roll is unwound by the pay-out roll 21. If necessary, a slit opening 12C (described later) is formed in the unwound base cloth 12 by the opening machine 23. The opening machine 23 includes a rotary die cutter 23A and an anvil roll 23B, and a large number of slit openings 12C are provided by the rotary die cutter 23A when the base fabric 12 passes between the rotary die cutter 23B. However, the opening machine 23 is not necessary when the slit opening 12C is not formed.
The opening machine 23 may be provided in a step after disposing the nonwoven fabric net 16 described later to form the slit opening 12C.

On the other hand, in the middle of the conveyance line of the base cloth 12,
The base sheet 11 and the non-woven fabric net 16 are wound and arranged in a roll shape so that the base sheet 11 and the non-woven fabric net 16 fed from each roll are superposed on the base fabric 12 by the guide rolls 24A and 24B. It has become. Here, the base sheet 11 and the non-woven fabric net 16 are arranged so as to sandwich the base fabric 12, and then,
The bonding machine 25 forms a grid shape as a whole and the dots are bonded together.

The joining machine 25 is a horn 2 that oscillates ultrasonic waves.
5A and an embossing roll 25B having a mold formed in a predetermined dot pattern, and while the superposed base sheet 11, base cloth 12 and non-woven fabric net 16 pass through, as shown in FIG. Sheets 11, 12, 1
6 are joined together to form a grid-like joined portion 13.

The joining method by the joining machine 25 is as follows.
There is a method of applying a pattern to at least one of the base sheet 11 and the base cloth 12 or a method of applying heat and pressure, but when bonding with an adhesive, the base sheet 11 is not peeled off when heat shrinks. As described above, it is necessary to use an adhesive having a sufficient adhesive force, and at the same time, for stable processing, it is necessary that the adhesive does not exude to the non-bonding surface of the base fabric 12.

In the method of heating and pressurizing, the base sheet 11 is used.
It is possible to select materials that can be fused or bonded to each other by the anchor effect with the base cloth 12. Specifically, there are a heat embossing method and an ultrasonic method, which may be appropriately selected depending on the processing speed and the material. The heating method is not limited to the ultrasonic method, and such a method is appropriately selected depending on the processing speed and the selection of the material.

Next, after the base cloth 12 and the non-woven fabric net 16 are integrated with the base sheet 11, the base cloth 12 and the non-woven fabric net 16 are conveyed to the oil coating machine 26, and the base fabric 12 and the non-woven fabric net 16 are conveyed. The oil component is applied to. The oil agent coating machine 26 includes a gravure roll 26A that conveys an appropriate amount of the oil agent component to the integrated sheet, a backup roll 26B that presses the integrated sheet against the gravure roll 26A, and a liquid pan 26C that stores the oil agent component. ing.

Although a roll coater is used as the coating machine 26 in FIG. 3, a spray method or the like may be used, and such a method is appropriately selected depending on the processing speed and the selection of materials. Further, the oil agent coating by the spray method is an effective method for applying the oil agent component after the heat shrinkage.

The sheet after the oil coating is applied to the nip roll 27.
And is delivered to the heat treatment machine 28. The heat treatment machine 28 heat-shrinks the base sheet 11, and is set to a temperature at which the base sheet 11 heat-shrinks. While the sheet in which the base sheet 11 and the base cloth 12 are joined together passes through the heat treatment machine 28, the base sheet 1
Since only one is contracted and the base cloth 12 and the non-woven net 16 do not contract, uneven protrusions are formed on the base cloth 12 and the non-woven net 16 in conformity with the embossed pattern. At this time, the temperature and time may be set so as to develop the desired shrinkage, but it is desirable to match the speed ratio of the distillation side nip roll 27 and the downstream nip roll 29 of the heat treatment machine 28 to the desired shrinkage.

The heat shrinkage is expressed by the following equation (3).

[0047]

[Equation 2] After passing through the heat treatment machine 28, it is drawn out by the nip roll 29 and wound by the winding machine 30.

Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows a cleaning sheet 10B according to a second embodiment of the present invention. In this second embodiment, a base cloth 12 is arranged on both sides of a base sheet 11, and a non-woven fabric net is provided outside each base cloth 12. 16 is arranged. That is, the base cloth 12 and the non-woven fabric net 16 of the first embodiment described above are arranged on both sides of the base sheet 11.

5 and 6 show a cleaning sheet 10C according to a third embodiment of the present invention. In this third embodiment, only the base cloth 12 is arranged on one side of the base sheet 11, and the non-woven net is used. Not equipped with 16. In addition, in each convex portion 12A,
Each slit opening 12C is formed, and relatively large dust that is difficult to be captured by the above-mentioned constituent fibers passes through these slit openings 12C and each convex portion 12A.
Is configured to be captured inside.

In the case of the third embodiment, the slit opening 12
The opening area of C is preferably formed in the range of ¹ to 100 mm ² . If it is smaller than 1 mm ^{2, the} dust that can be taken into the slit opening 12C is limited, and it becomes difficult to take in dust such as bread crumbs, and if it exceeds 100 mm ² , the collected dust is likely to fall off, which is not preferable. Slit opening 1
The ratio of 2C on the cleaning surface is preferably 5 to 60%.
This is because if it is less than 5%, it becomes difficult to capture dust, and if it exceeds 60%, the ability of the base cloth to capture fine dust is reduced, which is not practical.

If a low tack adhesive is applied to the inner surface of at least one of the non-bonded portions of the base sheet 11 and the non-woven fabric 12, the slit opening 12 is formed.
It is possible to prevent the dust captured through C from falling off. The slit opening 12C is formed by forming the non-woven fabric 12 into a sheet shape and then partially cutting it into a slit shape, but other than this, for example, it may be punched out.
When the nonwoven fabric is formed by the water jet entanglement method, a coarse mesh is used for the net of the support during the fiber entanglement of the web, so that the slit opening 1 is formed.
2C may be formed.

FIG. 7 shows a cleaning sheet 10D according to a fourth embodiment of the present invention. In the fourth embodiment, the base cloth 12 is arranged on both sides of the base sheet 11, and the convex portion 12A is the base. Randomly formed on both sides of the sheet 11. FIG. 8 shows a cleaning sheet 10E according to a fourth embodiment of the present invention.
In the fourth embodiment, the base sheet 1 is attached to the peripheral portion of the main body 15.
It has a free end 14 which is a region not joined with 1. That is, the base sheet 1 having a smaller area than the base cloth 12
Base fabric 1 formed by entanglement of fibers on one side or both sides of 1
2 are partially joined, and a main body 15 is formed in a region corresponding to the base sheet 11, and both sides (2
A free end 14 is formed on the side).

FIG. 9 shows a cleaning sheet 10E according to a fifth embodiment of the present invention. In this fifth embodiment, the above-mentioned fourth sheet is used.
In the fifth embodiment, the free ends 14 are formed on both sides (2 side) of the main body 15, whereas in the fifth embodiment, the free ends 14 are formed on the entire circumference (4 side). .. Hereinafter, a concrete implementation product of the present invention will be described in comparison with a comparison product.

(Working Example 1) As a base fabric, polyester fiber 1.5 denier, 51 mm was used as a standard card, and basis weight was 10 g.
A fiber aggregate of / m ² was formed, and the fiber aggregate was wrapped into 6 layers (60 g / m ² ) and entangled by water jet entanglement. At that time, in the water jet entanglement, a nozzle head with a nozzle pitch of 1.6 mm was provided with 4 blocks in the MD direction, and the water pressure was 4
It was carried out at 0 kg / cm ² and a speed of 5 m / min.

As the base sheet, a biaxially stretched polypropylene shrink film (Gunze Co., Ltd.) having a thickness of 15 μm and the same area as that of the base cloth is used, and after being superposed on the base cloth, an ultrasonic embossing device is used. Joined together. At this time, the joining pattern is formed by arranging circles having a diameter of 2 mm in a linear shape at intervals of 1.84 mm, and the linear pattern has a diagonal line of 39.27.
mm and 24.17 mm rhombuses were arranged so as to be continuously formed, and then heat-treated at 110 ° C. for 30 seconds to obtain a cleaning sheet having a shrinkage ratio of about 10%.

The oil component was spray coated on the cleaning sheet with 95% liquid paraffin and a nonionic surfactant [polyoxyethylene (average added mole number 3.3) alkyl (C ₁₂ -C ₁₃ ) ether]. An oil component (viscosity 125 cps, surface tension 30 dyn / cm) consisting of 5% was applied at a ratio of 5% with respect to the fiber weight (weight of the base fabric) to obtain Working Example 1. The size for evaluation was adjusted to 7 × 11 cm.

(Embodiment 2) By slitting the base cloth of the embodiment 1, slit openings were provided in the convex portions protruding in a diamond shape. At that time, the slit opening was provided with a slit having a length of 25 mm so that the intersection of the diagonal lines was centered on the long diagonal line of the diagonal lines of the diamond pattern. The other conditions are the same as those of the product 1.

(Practical product 3) A polyester fiber (Teijin Ltd.) 1.5 denier, 51 mm, was used as a base fabric to form a fiber aggregate having a basis weight of 10 g / m ² using a conventional card. Was wrapped in 6 layers (basis weight 60 g / m ² ) and entangled by water jet entanglement. At that time, the water jet entanglement has a nozzle pitch of 1.6 mm.
Nozzle head was provided with 4 blocks in the MD direction, and the water pressure was 40 kg / cm ² , and the speed was 5 m / min.

A biaxially stretched shrink film made of polypropylene (Gunze Co., Ltd.) having a thickness of 15 μm and having an area of 80% of the base cloth is used as the base sheet, and the above-mentioned base cloth has free ends on two facing sides. Then, they were joined using an ultrasonic embossing device. At this time, the joining pattern is formed by arranging circles having a diameter of 2 mm in a linear shape at intervals of 1.84 mm, and the linear patterns have diagonal lines of 58.91 mm and 36.
A 26 mm rhombus arranged so as to be continuously formed was used.

As the oil agent component, a roll coater was used and 10 parts of silicone (Toray Silicone SM5571) was applied to the base cloth.
%, And then treated at 120 ° C. for 30 seconds to obtain a practical product 3 having a shrinkage ratio of about 20%.
The size for evaluation was 7 × 11 cm, and the free end regions were each adjusted to extend about 17 mm on the side of 7 cm. (Practical product 4) A polyester fiber (Teijin Co., Ltd.) 1.5 denier, 51 mm was used as a base fabric to form a fiber assembly having a basis weight of 10 g / m ² using a conventional card, and 6 layers of the fiber assembly (Basis weight 60 g / m ² ) Wrapped and entangled by water jet entanglement was used. At that time, the water jet entanglement was carried out with a nozzle head having a nozzle pitch of 1.6 mm provided with four blocks in the MD direction, and the water pressure was 40 kg / cm ² , and the speed was 5 m / min.

As a non-woven net, a polyester fiber (Teijin Co., Ltd.) 3 denier, 76 mm was formed into a fiber aggregate having a basis weight of 10 g / m ² using a conventional card, and a polypropylene / polyethylene core-sheath fiber (Chisso Co., Ltd. )) 3 denier, 51 mm is formed by laminating a fiber aggregate having a basis weight of 10 g / m ² with a conventional card, and then entangled by water jet entanglement so that a circle with a diameter of 15 mm has a center distance of 20 mm. A large number of blanks were used. At that time, the water jet entanglement is the above, and the water pressure is 20 kg.
The conditions are the same except that / cm ² is used.

As the base sheet, a polypropylene biaxially stretched shrink film (Gunze Co., Ltd.) having a thickness of 15 μm and an area of 80% of the base cloth is used, and free ends are provided on two sides facing the base cloth and the non-woven fabric net. After being overlapped with the above-mentioned base cloth so as to have the above-mentioned structure, they were joined using an ultrasonic embossing device. At that time, the bonding pattern is a circle with a diameter of 2 mm of 1.84.
The linear patterns were arranged at intervals of mm, and the linear patterns were arranged so as to continuously form a diamond pattern having diagonal lines of 39.27 mm and 24.17 mm. Then, a heat treatment was performed at 110 ° C. for 30 seconds to obtain a cleaning sheet having a shrinkage ratio of about 10%.

The oil agent component was obtained by spray coating the cleaning sheet with 95% liquid paraffin and a nonionic surfactant [polyoxyethylene (average added mole number 3.3) alkyl (C ₁₂ -C ₁₃ ) ether]. An oil agent component consisting of 5% (viscosity 125 cps, surface tension 30 dyn / cm) was applied at a ratio of 5% with respect to the weight of the fiber (base cloth) to obtain Working Example 1.

The size for evaluation was adjusted to 7 × 11 cm. The free end regions were each prepared to extend about 17 mm on a 7 cm side. (Comparative product 1) A product which does not have an uneven shape on its surface except for the shrinking step was used as the comparative product 1. The comparative product 1 was prepared in the same manner as the working product 1 in other points.

(Comparative Product 2) The product of Comparative Example 2 in which the oil agent component was not applied was designated as Comparative Product 2. In other respects, the comparative product 2 was prepared in the same manner as the working product 1. The following evaluations were performed for each of the above-described embodied product and the comparative product.

1. Cleaning ability for uneven surface to be cleaned 7 kinds of test dust (JIS Z890) that has a composition of dirt and dust on the surface to be cleaned having grooves of width 3 cm, depth 3 mm and depth 5 mm
1) Evenly sprinkle 1g on the sponge with a size of 7 x 11 cm, and fix each of the above-mentioned embodied products and the comparative product with each other.
By reciprocating, the degree of dirt in the groove on the surface to be cleaned was visually observed.

The criteria for the visual evaluation are as follows. ⊚: No dust remains in the grooves having a depth of 3 mm or 5 mm. ◯: No dust remains in the groove having a depth of 3 mm, but dust remains slightly in the groove having a depth of 5 mm. Δ: A little dust remains in the groove having a depth of 3 mm, but a large amount of dust remains in the groove having a depth of 5 mm.

X: A considerable amount of dust remains in the grooves having a depth of 3 mm and 5 mm. 2. Cleaning ability for corners 7g of test dust (JIS Z8901), which is close to the composition of soil and sand dust, is evenly sprinkled at 1g on the corners composed of 3 orthogonal planes, and sponge of 7 × 11cm is sprinkled on each of the above products. And the comparative product were attached and fixed, and 10 reciprocations were performed to visually check the degree of dirt in the groove on the surface to be cleaned.

The criteria for the visual evaluation are as follows. ⊚: No dust remains at the corners where two vertical and horizontal planes intersect. ◯: Some dust remains on the upper part, but no dust remains on the corner where one vertical plane and the horizontal plane intersect. Δ: A considerable amount of dust remains at the corners where the two vertical planes and the horizontal plane intersect, and a little dust remains at the corners where the one vertical plane and the horizontal plane intersect.

X: A considerable amount of dust remains at any corner. 3. Bread crumbs collecting capacity 1 x 1g of bread crumbs (Nisshin Flour Milling Co., Ltd. soft bread crumbs) was spread over the area of 30 x 30 cm, and the sprinkles of 7 x 11 cm were pasted with the above-mentioned products and comparative products. It was fixed and reciprocated three times over it, and a sensory evaluation was performed on the ease of removing bread crumbs and the difficulty of dropping them.

The criteria for sensory evaluation are as follows. ⊚: Almost all bread crumbs are reliably taken, and the taken bread crumbs are hard to drop. ◯: Most of the bread crumbs are taken, but the taken bread crumbs may fall. B: Some bread crumbs are removed, but the taken bread crumbs are easily dropped. X: Almost no bread crumbs are taken.

[0072]

[Table 1] As is clear from Table 1, according to the cleaning sheet of the present embodiment, the uneven surface of the surface to be cleaned and the dust collecting ability at the corners are excellent, and in all of the evaluation items, compared with the conventional product, Good values could be obtained.

The product of the present embodiment can capture not only cotton dust but also relatively large dust such as bread crumbs more sufficiently than the comparative product. In particular, the comparative product was inferior in bread crumb collecting ability, but in any case, the good results could be obtained in the bread crumb collecting ability in the present product. Particularly, in the product 4 in which the non-woven net is arranged on the outer side of the base cloth, the uneven surface to be cleaned, the corner cleaning ability, and the bread crumbs collecting ability are remarkably excellent, and dust of a wide size is reliably collected. be able to.

That is, according to the present embodiment, there is an effect that it is excellent in dust absorption and dust retention, and is also excellent in collecting large dust such as hair and bread crumbs. The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the scope of the present invention. For example, the method of supporting the oil agent component on the cleaning sheet may be such that the cleaning sheet is dipped in the oil agent component.

In addition to directly cleaning the cleaning sheet by using hands, the cleaning sheet can be attached to a tool with a handle and used as a cleaning sheet. Although the form of the patterned tool is not particularly limited, moped-like, handy-mop-like, and hataki-like tools can be cited, and the cleaning part is preferably planar when viewed macroscopically. Further, in the production method of the present invention, the base cloth is impregnated with an oil component, and the base cloth is placed on one or both sides of the heat-shrinkable base sheet, and then the base cloth and the base sheet are combined. After partly joined and integrated, the base sheet is heat-treated to be heat-shrinked to form a concave portion in the joint portion and a convex portion in the non-joint portion,
A cleaning article having an uneven shape may be formed on the surface as a whole.

[0076]

According to the cleaning article of the present invention, not only dirt such as fine dust, but also relatively large dirt such as bread crumbs has a wide range of dust collecting ability, and the collecting ability is excellent. Hard to be affected by the shape of. Furthermore, according to the method for manufacturing a cleaning article of the present invention, the cleaning article can be preferably manufactured.

[Brief description of drawings]

FIG. 1 is a plan view showing a cleaning sheet according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a part of the cleaning sheet shown in FIG. 1 by cutting.

FIG. 3 is a schematic view showing the entire cleaning sheet manufacturing apparatus of the first embodiment.

FIG. 4 is an enlarged perspective view showing a cleaning sheet according to a second embodiment by cutting a part thereof.

FIG. 5 is a plan view showing a cleaning sheet according to a third embodiment.

FIG. 6 is an enlarged perspective view showing a part of the cleaning sheet shown in FIG.

FIG. 7 is an enlarged perspective view showing a cleaning sheet according to a fourth embodiment by cutting a part thereof.

FIG. 8 is a plan view showing a cleaning sheet according to a fifth embodiment.

FIG. 9 is a plan view showing a cleaning sheet according to a sixth embodiment.

[Explanation of symbols]

 10A to 10F Cleaning sheet (cleaning article) 11 Base sheet 12 Base cloth 12A Convex portion 12C Opening (slit opening) 16 Nonwoven net

Claims (9)

[Claims] 1. A base sheet made of a non-woven fabric formed by entanglement of fibers is integrally joined to one or both sides of a base sheet by partial joining, and the joined portion of the base cloth is a concave portion. And a non-bonded portion forms a convex portion, and the entire surface has a concavo-convex shape, and an oil agent component is carried by 0.1 to 80% of the weight of the base cloth. A cleaning article characterized by the above. 2. The base cloth has a larger area than that of the base sheet, is partially joined to the base sheet, is supported by the base sheet, and is outward from the base sheet. The cleaning article of claim 1 having a free end region extending. 3. The cleaning net according to claim 1, wherein a non-woven net integrated by entanglement of fibers having a larger inter-fiber distance than the base cloth is laminated on the outside of the base cloth. Goods. 4. The cleaning article according to claim 1, wherein an opening is formed in the convex portion of the base cloth. 5. The cleaning article according to claim 1, wherein the oil agent component contains at least one kind of mineral oil, synthetic oil, silicone oil and surfactant. .. 6. The viscosity (25 ° C.) of the oil component is 5 to 1
It is 000 cps, The cleaning article in any one of Claims 1-5 characterized by the above-mentioned. 7. The cleaning article according to claim 1, wherein the cleaning article is mounted on a tool with a handle. 8. The method for manufacturing a cleaning article according to claim 1, wherein the base cloths arranged on one side or both sides of the heat-shrinkable base sheet are partially joined and integrated, and The base sheet is heat-treated to be heat-shrinked to form a concave portion in the joint portion and a convex portion in the non-joint portion to form a cleaning article having an uneven surface as a whole, and the cleaning is performed. A method for producing a cleaning article, comprising impregnating the cleaning article with an oil agent component before or after the heat treatment of the cleaning article. 9. The method for manufacturing a cleaning article according to claim 1, wherein the base cloth is impregnated with an oil component, and the base cloth is arranged on one or both sides of a heat-shrinkable base sheet, After the base cloth and the base sheet are partially joined and integrated, the base sheet is heat-treated to be heat-shrinked to form a concave portion in the joint portion and a convex portion in the non-joint portion. A method for manufacturing a cleaning article, comprising forming a portion and forming a cleaning article having an uneven surface as a whole.