JPH0614859A - Article for cleaning - Google Patents

Abstract

PURPOSE:To surely capture dust over a wide range by partially joining and integrating a fabric base consisting of a non-woven fabric to a base plate sheet and imparting many rugged shapes on the wiping surface of the fabric base, thereby bulking the surface. CONSTITUTION:The sheet 10A for cleaning is constituted by integrating the non-woven fabric-like fabric base 12 formed of the entanglement of fibers by partial joining to one surface of the base sheet 11. The joint parts of the fabric base 12 form rugged parts 12B and the non-joined parts thereof form projecting parts 12A, thus constituting the cleaning surface sheet 10A having the rugged shapes on the surface as a whole. The constituting fibers of the base fabric 12 contains thermally fusible fibers. Further, the sheet 10A for cleaning is laminated with a non-woven fabric net 16 integrated by the entanglement of the fibers having the interfiber distances larger than the interfiber distances of the fabric basic 12 on the outer side of the fabric base 12. A sheet consisting of a composite blank material formed by using synthetic resins is used as the base sheet 11. The fibers contg. components having a m.p. lower by >=10 deg.C than the m.p. of other constituting fibers of the fabric base 12 are used as the thermally fusible fibers incorporated into the fabric base 12.

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.

[0002]

2. Description of the Related Art Conventionally, as a cleaning tool, many cleaning articles based on a fiber material have been proposed. For example,
Wipe that is a wet or dry cleaning cloth based on woven or non-woven fabric, chemical rag obtained by impregnating a flat woven or non-woven fabric with an oily substance, or a bundle of thread-like typified by mop 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 that the cleaning property on the uneven portion of the surface to be cleaned is not good as compared with a mop-like cleaning article. In order to solve such a drawback, JP-A-64-615
Japanese Unexamined Patent Publication No. 46 discloses a technique in which a three-dimensional shape is imparted to a non-woven fabric as a cleaning article, and after the non-woven fabric is formed, it is stitched with a thread having elasticity to impart gathering. Further, Japanese Patent Laid-Open No. 2-160962 discloses that
A technique has been disclosed in which a cleaning sheet (cleaning article) is three-dimensionalized by performing a gathering process using a stretchable fiber to improve the wiping performance as compared with a flat sheet. Furthermore,
JP-A-2-124122, JP-A-2-99641
The publication discloses a technique in which the cleaning property is improved by raising the surface of the cleaning sheet.

[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 Japanese Patent Laid-Open No. 53-144156, 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 falling of the captured dust when the mop is lifted, and the need for a large amount of base material and operation during cleaning. It is inferior to the sheet-like material in terms of the cleaning property, and has the disadvantage that it is inferior to the sheet-like material in cleaning properties such as walls and ceilings.

Further, a sheet-like material such as a non-woven fabric having a three-dimensional shape imparted by stitching or the like is relatively unlikely to be affected by the shape of the surface to be cleaned, but it is difficult to control the shape to a wide range of the surface to be cleaned. In addition, there is a problem 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 captured and left behind.

Further, as a cleaning sheet, the non-woven fabric fibers are less likely to fall off (fluffing) during the cleaning due to friction between the surface of the sheet and the surface to be cleaned or when it is caught by a protrusion on the surface to be cleaned. Excellent anti-fluffing property is required.

Therefore, an object of the present invention is that it has an excellent dust collecting ability over a wide range of dusts such as fine dust and relatively large dirt such as bread crumbs, and the collecting ability depends on the shape of the surface to be cleaned. Another object of the present invention is to provide a cleaning article that is hard to be rubbed, has excellent fluff removal resistance, and has good flexibility and texture.

[0010]

According to the present invention, a non-woven fabric-like base fabric formed by entanglement of fibers is integrated on one side or both sides of a base sheet by partial joining. Is a cleaning article whose joint portion forms a concave portion and whose non-joint portion forms a convex portion, and which has an uneven surface as a whole, and which is joined to at least one surface of the base sheet. The object described above is achieved by providing a cleaning article in which the constituent fibers of the non-woven base fabric include a heat-fusible fiber.

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

[0012]

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 bulky non-woven base cloth, which is partially joined to the base sheet to be integrated and a large number of irregularities are provided on the wiping surface of the base cloth. , Entangling from small dust to relatively large dust such as bread crumbs and hair, it reliably collects a wide range of dust.

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 is left. Is hard to occur.

Further, in the cleaning article of the present invention, the constituent fibers of the fiber assembly include heat-fusible fibers, and the constituent fibers are fused to each other, so that the constituent fibers may fall off during cleaning. In addition, the above-mentioned heat-fusible fiber firmly joins the mesh sheet and the fiber assembly even with a small bonding area.

[0015]

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 a first embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a part of the cleaning sheet shown in FIG.
FIG. 3 is a schematic view showing the whole manufacturing apparatus suitably used for manufacturing the cleaning sheet of the first embodiment. FIG. 4 shows the second
It is an expansion perspective view which cuts and shows some cleaning sheets of an example. FIG. 5 is a plan view showing the cleaning sheet of the 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 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 this embodiment, a non-woven base cloth 12 formed by entanglement of fibers is integrated on one side of a base sheet 11 by partial joining, and the above-mentioned base cloth is used. Reference numeral 12 denotes a cleaning sheet 10A in which the joint portion forms a concave portion 12B and the non-joint portion forms a convex portion 12A, and the cleaning sheet 10A has an uneven surface as a whole. It contains a heat-fusible fiber. Further, in the cleaning sheet 10A, a nonwoven fabric net 16 integrated by entanglement of fibers having a larger interfiber distance than the base cloth 12 is laminated on the outside of the base cloth 12. The cleaning sheet (cleaning article) of the present invention may not include the non-woven net 16.

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, and contracted in a 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. By using such a heat-shrinkable film or sheet, when manufacturing the cleaning sheet 10A,
By heat treatment of the heat shrinkable film or sheet,
A large number of uneven portions can be formed on the surface of the base cloth 12.

The thickness of the base sheet 11 depends on the shrinkage force, the shape of the uneven portion depending on the shrinkage ratio, 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 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.

The heat-fusible fibers contained in the base cloth 12 as its constituent fibers are preferably fibers containing a component having a melting point at least 10 ° C. lower than the melting points of the other constituent fibers of the base cloth 12. , For example, a core-sheath type composite fiber having a high melting point polymer as a core component and a low melting point polymer as a sheath component,
Alternatively, a side-by-side type composite fiber obtained by joining a high melting point polymer and a low melting point polymer is used, and a low melting point polymer fiber with a single component is also used. Examples of the combination of the high-melting point polymer and the low-melting point polymer forming the above-mentioned composite fiber include polypropylene / polyethylene, polyethylene terephthalate / polyethylene, high-melting point polyester / low-melting point polyester and the like. Examples of the low melting point polymer that constitutes the low melting point polymer fiber include polyethylene, an ethylene copolymer, a vinyl chloride copolymer, and a low melting point polyester.

When a heat-shrinkable sheet is used as the base sheet 11, the heat-fusible fiber preferably has a melting point lower than the shrinking temperature of the heat-shrinkable sheet. By using such a heat-fusible fiber, when the cleaning sheet 10A is manufactured, at the same time as the heat-shrinkable sheet shrinks, the base cloth 12 and the heat-shrinkable sheet are joined and the constituent fibers of the base cloth 12 are formed. Fusion between them can be performed.

The content of the heat-fusible fibers in the base cloth 12 is preferably 1 to 99% by weight, more preferably 3 to 70% by weight, and particularly preferably 5 to 50% by weight. When the content of the heat-fusible fiber is less than 1% by weight, it is difficult to say that the effect of preventing the fibers from falling off is sufficient, and when the content is more than 99% by weight, the cleaning sheet has good flexibility, fiber freedom and texture. Is reduced.

Further, the base cloth 1 other than the heat-fusible fiber
As the constituent fibers of 2, for example, polyester fibers,
Synthetic fibers such as polyamide fibers, polyolefin fibers, acrylic fibers, composite fibers using resins of these fibers, semi-synthetic fibers such as acetate fibers, cupra,
Regenerated fibers such as rayon, natural fibers such as cotton, hemp, and wool, or blended cotton are used.

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 fineness of the constituent fibers of the base fabric 12 is 0.5 to
It is preferably in the range of 6.0 denier. Fineness is 0.5
When it is less than denier, the ability of the fiber to form a web becomes poor,
When it exceeds 6.0 denier, the fibers are not easily entangled,
It is not preferable because the ability to capture fine dust deteriorates.

On the base cloth 12, the lattice-shaped joint portion 1 is formed.
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 entire cleaning sheet. These many 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.

The convex portion 12A may be provided with a slit opening 12C as shown in the third embodiment described below.

As shown in FIG. 2, a non-woven cloth net 16 having a large inter-fiber distance is arranged outside the base cloth 12 (on the side opposite to the base sheet 11), and the non-woven cloth net 16 is formed at the joint portion 13. Are partially joined to the base cloth 12. That is, the non-joined portion between the base sheet 11 and the nonwoven fabric net 16 is formed as the convex portion 12A, and the joined 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 more 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. The joint portion 13 between the base sheet 11 and the base cloth 12 and the non-woven net 16 may have a shape that allows the convex portion 12A to be formed by the base cloth 12 alone or the base cloth 12 and the non-woven net 16. However, in order not to impair the flexibility of the sheet, the joining method is more advantageous in joining by dots like dots than joining by lines.

The smaller the size of the dots in the joint portion 13, the more the flexibility is not impaired. Therefore, in the range where the base sheet 11, the base cloth 12, and the non-woven fabric net 16 are bonded with practical strength, the dot area and the number of the bonded portions are taken into consideration.

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 fineness of the constituent fibers are the same as those of the base cloth 12 described above, and it is preferable that the entanglement of the fibers is 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 interfiber distance (a) defined by the following equation (1) has a great influence on the strength of the nonwoven fabric.

[0035]

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

If the distance between the fibers is too large, the strength becomes weak, and if the distance between the fibers is too small, the degree of freedom of the fibers is lowered and the entanglement with a relatively large solid substance such as bread crumbs is deteriorated.

Specifically, the distance between the fibers of the base fabric 12 is 80.
The distance between the fibers of the non-woven net 16 is 50 μm or less.
The distance between the fibers of the base fabric 12 and the distance between the fibers of the non-woven fabric 16 need to satisfy the following expression (2).

[0038]

[Expression 2] Distance between fibers of the base cloth 12 <Distance between fibers of the non-woven net 16 (2)

Further, there is no limitation on the way of opening the non-woven net 16, and the locations of the fibers and the locations of the holes may be regular, or the constituent fibers of the non-woven fabric may be present randomly. It may be one. 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 fabric net 16 is formed by laminating the constituent fiber web of the non-woven fabric net 16 on the surface of the base fabric 12 in a pattern such as a streak or a lattice, and then by the method of water jet entanglement (water needling) or the like. 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 net 16, the cleaning surface has almost no heat-fusible fibers such as binder fibers, and the surface opposite to the cleaning surface, that is, the base cloth 12 It is preferable that the side surface is bonded with a sufficient heat-fusible fiber.

Specifically, the non-woven net 16 does not include the fibrous web layer A containing the heat-fusible fiber and the heat-fusible fiber.
That is, after being laminated with the fibrous web layer B made of fibers having sufficient cleaning characteristics, they are entangled and integrated by a water jet entanglement method. 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 the heat-fusible fibers contained in the fibrous web layer A by heat treatment.

The openings may be formed by partially punching the above-mentioned non-woven fabric or the like, and when the non-woven fabric is formed by the water jet entanglement method, when the web is entangled with the fibers of the support, It may be formed by using a coarse mesh for the net.

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.

As shown in FIG. 1, the cleaning sheet 10A has a main body 15 and a free end region 14 in the peripheral portion thereof, and the free end region 14 extends outwardly from the boundary of the main body 15 of the main body 15. The range of 1/30 to 1/2 of the dimension is preferable. 1
If it is less than / 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.

In the cleaning article of the present invention, the base cloth can carry 0.1 to 500% by weight (based on the weight of the base cloth) of a chemical agent according to the required function. Examples of such a chemical include those mainly containing an oil agent component for the purpose of substantially dry dry cleaning, and detergents for the purpose of substantially wet wet cleaning.

As the above oil component, mineral oil, synthetic oil,
Those containing at least one of silicone oil and surfactant are preferable. Paraffin hydrocarbons, naphthene hydrocarbons, aromatic hydrocarbons and the like are used as the mineral oil.

As the synthetic oil, alkylbenzene oil, polyolefin oil, polyglycol oil, etc., 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,
Examples include mono long-chain alkyl trimethyl ammonium salts, di long-chain alkyl dimethyl ammonium salts, mono long-chain alkyl dimethyl benzyl ammonium salts, etc., having an alkyl group or an alkenyl group having 10 to 22 carbon atoms. ethylene (6 to 35 mol) long-chain alkyl or alkenyl (primary or secondary C ₈ ~
C ₂₂₎ ethers, polyoxyethylene (6-35 moles)
Alkyl (C ₈ ~C ₁₈₎ polyethylene glycol ether type such as phenyl ethers, polyoxyethylene polyoxypropylene block copolymers or glycerol fatty acid esters, sorbitan fatty acid esters, polyhydric alcohol type such as alkyl glycosides and the like.
The surfactant preferably contains water in an amount of 5% by weight or less in order to effectively perform washing.

The viscosity (25 ° C.) of the oil agent component is 5 to 1
000 cps is preferable, and 5-200 cps is particularly preferable. If it is less than 5 cps, the dust adsorption is poor and 100
When it is greater than 0 cps, the oil component is difficult to spread evenly on the fiber, and the coefficient of friction with the cleaning surface increases, which causes damage to the cleaning surface. Surface tension (25 ℃) is 15
To 45 dyn / cm are preferred, and 20 to 35 are particularly preferred.
dyn / cm. If it is less than 15 dyn / cm, the adsorptivity of dust is poor, and if it is more than 45 dyn / cm, it becomes difficult to evenly spread it on the fibers constituting the nonwoven fabric.

The amount of the above oil component carried is preferably 0.1 to 80%, preferably 0.5 to 40%, and particularly preferably 1 to 20% based on the weight of the base cloth. The dust absorption ability and the dust retention ability can be increased by carrying it in a ratio. Dust absorption when the amount of oil component carried is less than 0.1%,
The increase in dust retention due to the addition of the oil component is not enough,
%, The stickiness to the hand will be significantly deteriorated. Since the cleaning article of the present invention has the uneven portion formed on the surface of the fiber assembly, even when the oil agent component is carried on the base fabric, the oil agent component does not adhere to the hand when touched, and the stickiness is low. It has little feeling.

As described above, the oil component is a mineral oil,
It is preferable to contain at least one kind or more of synthetic oil, silicone oil, and surfactant, but the ratio and kind, the viscosity of the oil agent component, the surface tension and the like depend on the purpose of cleaning and the kind of constituent fiber of the non-woven fabric. Can be decided as appropriate. Further, the oil agent component may contain an antibacterial agent, an antifungal agent, a bactericidal agent and the like, if necessary.

As the above cleaning agent, a surfactant,
An aqueous solution containing at least one of a solvent and an alkaline agent is preferable.

As the above-mentioned surfactant, nonionic type, positive type
Various active agents such as ionic, anionic, amphoteric
Be done. As the above-mentioned anionic surfactant, a usual sulfite is used.
Honate anionic surfactant, sulfate anion
An on-type surfactant is used. Sulfonate anion
The straight-chain or branched alkyl (C ₈
~ C_{twenty two}) Benzene sulfonate, long-chain alkyl (C₈~
C_{twenty two}) Sulfonates, long-chain olefins (C₈~ C_{twenty two}) Su
There are ruphonate, etc. Also, sulfate anion
As the surfactant, long-chain monoalkyl (C₈~ C_{twenty two})
Sulfate ester salt, polyoxyethylene (1 to 6 mol) length
Chain alkyl (C₈~ C_{twenty two}) Ether sulfate ester,
Lioxyethylene (1-6 mol) alkyl (C₈~
C₁₈) Phenyl ether sulfate ester salt and the like. this
As a counterion for anionic surfactants
Is an alkali metal ion such as sodium or potassium,
Noethanolamine, diethanolamine, triethano
And alkanolamine ions such as oleamine. Addition
From the viewpoint of strong resistance to water splitting, anionic interface
As the active agent, sulfonate-based surfactants are preferred.
Yes. Furthermore, from the viewpoint of detergency, a long-chain or branched-chain alkylbenze
Sulfonate is preferred. In addition, the above amphoteric surface activity
As the agent, a carboxylic acid having an alkyl group having 8 to 22 carbon atoms is used.
Bobetaine, sulfobetaine, hydroxysulfobetaine
And the like. Further, the nonionic surfactant and
The above cationic surfactant is included in the above oil agent component.
The same as the rare ones. Also, with the above solvent
Alcohol such as ethanol and isopropanol
, Ethylene glycol, propylene glycol, etc.
Recalls, ethylene glycol monoethyl ether,
Glycol such as propylene glycol monomethyl ether
And ethers as the above alkaline agents.
Are alkanolamines such as monoethanolamine
Can be mentioned. In addition, the above cleaning agents may be sterilized if necessary.
Ingredients such as agents, deodorants and fragrances may be included.
The amount of these cleaning agents carried is 50 to 50 with respect to the weight of the base cloth.
500%, preferably 100-300%
In addition, by supporting it at this ratio, there will be no dirt or stains.
Which cleaning effect can be increased. Carrying detergent
If the amount is less than 50%, the area that can be cleaned is too small.
If it exceeds 500%, it cannot be retained in the sheet during cleaning.
Washing active substance drips and is not desirable.

The above-described cleaning sheet (cleaning article) 10A of the present invention is manufactured, for example, as follows.

As shown in FIG. 3, one side or both sides (one side in this embodiment) of the heat-shrinkable base sheet 11 is used as the base cloth 1.
After the two are partially joined and integrated, the above-mentioned base sheet 1
1 is heat-treated to be heat-shrinked to form a concave portion 12B in the joint portion and a convex portion 12A in the non-joint portion to form a cleaning sheet having an uneven surface as a whole. When it is carried on the cloth 12, the cleaning sheet is impregnated with a chemical before or after the heating treatment of the cleaning sheet.

First, the base cloth 12 wound in a roll shape is unwound by the pay-out roll 21. A slit opening 12C (described later) is formed in the unwound base cloth 12 by the opening machine 23, if necessary. The opening machine 23 is provided with 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 for the base cloth 12,
The base sheet 11 and the non-woven fabric net 16 are wound and arranged in a roll shape, respectively, 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 bonding is performed by a dot pattern.

The bonding 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.

Incidentally, in the joining method by the above-mentioned joining machine 25,
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, it is necessary that the adhesive does not exude to the non-bonding surface of the base fabric 12 for stable processing.

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 method is not limited to the ultrasonic method, and may be a heating method, and such a method is appropriately selected depending on the processing speed and selection of materials.

Next, after the base cloth 12 and the non-woven cloth net 16 are integrated with the base sheet 11, the base cloth 12 and the non-woven cloth net 16 are conveyed to the chemical coating machine 26, and the base cloth 12 and the non-woven cloth net 16 are conveyed. The drug is applied to.

The chemical coating machine 26 is composed of a gravure roll 26A for carrying an appropriate amount of chemicals to an integrated sheet, a backup roll 26B for pressing the integrated sheet against the gravure roll 26A, and a liquid pan 26C for storing chemicals. Has been done.

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, material selection, chemical type, etc. To do.

Further, the chemical coating by the spray method is an effective method for applying the chemical after heat shrinking. The sheet after the chemical coating is pulled out by the nip roll 27 and passed 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 passes through the heat treatment machine 28, only the base sheet 11 contracts, and the base cloth 12 and the non-woven fabric net 16 do not contract, so that the base cloth 12 and the non-woven net 16 are formed with protrusions and depressions in conformity with the embossed pattern. At this time, the temperature and time may be set so that the desired area shrinkage is exhibited. However, the speed ratio of the distillation-side nip roll 27 and the downstream nip roll 29 of the heat treatment machine 28 can be adjusted to the desired area shrinkage. desirable.

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

[0068]

## EQU00003 ## Area shrinkage (%) = 100-A.times.B.times.100 (3) where A and B are as follows. A = (length of one side after heat shrink in the vertical direction) / (length of one side before heat shrink in the vertical direction) B = (length of one side after heat shrink in the horizontal direction) / (heat in the horizontal direction) (Length of one side before contraction)

After passing through the heat treatment machine 28, it is taken 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 net is provided outside each base cloth 12. 16 is arranged. That is, the base fabric 12 and the non-woven fabric net 16 of the first embodiment described above are arranged on both sides of the base sheet 11.

In the case of the cleaning article in which the base cloth is arranged on both sides of the base sheet as in the second embodiment, the base cloth on both sides of the sheet may be the same or different. Different materials as the base fabric on both sides of the sheet, for example, different ones having different content ratios of the heat-fusible fibers or different ones of the constituent fibers are used, so that they can be selectively used on both sides of the sheet according to the purpose of use. It is possible to make a product that can be manufactured or a product that has different textures on both sides of the sheet.

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 less 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.

The ratio of the slit opening 12C to 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 decreases, 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 cutting the nonwoven fabric 12 into a sheet shape and then partially cutting it into a slit shape, but it may be punched out, for example.
When a 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 free end 14 which is a region which is not joined to the base sheet 11 in the circumferentially extended portion of the main body 15 is shown. have. That is, the base sheet 12 formed by entanglement of fibers is partially bonded to one or both sides of the base sheet 11 having a smaller area than the base sheet 12.
A main body 15 is formed in a region corresponding to the base sheet 11, and free ends 14 are formed on both sides (2 sides) of the main body 15.

FIG. 9 shows a cleaning sheet 10F 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, concrete products of the present invention will be described in comparison with comparative products. (Example 1: As shown in FIG. 2, the base sheet is arranged on only one side of the base sheet, and has a non-woven net)
As base fabric, polyester fiber 1.5 denier, 51 mm
And polypropylene / polyethylene core / sheath fiber 3 denier, 51 mm polyester fiber / core / sheath fiber = 7/3 in a weight ratio, using a standard card with a basis weight of 1
Forming a fiber web of 0 g / m ² and
A layer (60 g / m ² ) was lapped and entangled by water jet entanglement was used. At that time, the water jet entanglement is that the nozzle head with a nozzle pitch of 1.6 mm has four blocks in the MD direction, and the water pressure is
It was carried out at 40 kg / cm ² and a speed of 5 m / min.

As a non-woven net, polyester fiber (Teijin Co., Ltd.) 3 denier, 76 mm was used to form a fiber web having a basis weight of 10 g / m ² using a conventional card, and a polypropylene / polyethylene core-sheath fiber (Chisso Co., Ltd.) was used. ) 3 denier, 51 mm is formed by laminating a fibrous web having a basis weight of 10 g / m ² using a conventional card, and then entangled by water jet entanglement, and a large number of circles with a diameter of 15 mm are arranged with a center distance of 20 mm. A punched product was 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 a base sheet, a polypropylene biaxially stretched shrink film (Gunze Co., Ltd.) having a thickness of 15 μm and the same area as that of the base cloth was used. Bonding was performed using an embossing device. At that time, the bonding pattern is 1.
By linearly arranging at intervals of 84 mm, the linear patterns are arranged so as to continuously form a diamond shape having diagonal lines of 39.27 mm and 24.17 mm, and then heat-treated at 110 ° C. for 30 seconds. A cleaning sheet having an area shrinkage of about 20% was obtained.

[0082] 95% liquid paraffin by spray coating on the cleaning sheet and a non-ionic surfactant [polyoxyethylene (average addition mole number 3.3) alkyl (C ₁₂ ~
C ₁₃ ) ether] 5% oil agent component (viscosity 125
cps and a surface tension of 30 dyn / cm) were applied at a ratio of 5% with respect to the weight of the fiber (weight of the base cloth) to obtain a working example 1.

(Practical product 2: one in which base fabrics are arranged on both sides of a base sheet as shown in FIG. 4 and provided with a non-woven net) As a raw material for the upper fiber web, polyester fiber 3 denier, 51 mm Using polypropylene / polyethylene core-sheath fiber 3 denier, 51 mm mixed with polyester fiber / core-sheath fiber = 3/7 by weight,
In addition, Example 2 was used in the same manner as Example 1 except that the polyester fiber / the core-sheath fiber = 7/3 in weight ratio was used as the raw material for the lower layer fibrous web.
(Area shrinkage 20%) was obtained.

(Comparative product 1: Base fabric containing no heat-fusible fiber) As a raw material for the upper and lower fiber webs, polyester fiber 1.5 denier, except that only 51 mm was used, Comparative product 1 was obtained in the same manner as in the case.

(Comparative product 2: Base fabric consisting only of heat-fusible fiber) [0100] As a raw material for the upper and lower fiber webs, polypropylene / polyethylene core-sheath fiber 3 denier, except that only 51 mm was used. Comparative product 2 was obtained in the same manner as in the case of 1.

The following evaluations were carried out for each of the above-mentioned working product and comparative product. 1. Hair-collecting properties 10 human hairs, about 10 cm long, are sprinkled so that they do not overlap closely, and the sponge of 7 × 11 cm is pasted and fixed with the above-mentioned products and comparative products, and then reciprocated 3 times.
A sensory evaluation was conducted on the ease with which hair was taken off and the difficulty in removing it.

The criteria for sensory evaluation are as follows. ⊚: 10 to 8 hairs are reliably taken, and it is difficult to remove the taken hair. ◯: 10 to 8 hairs are surely taken, but the taken ones may fall. Δ: 7 to 5 hairs are taken, but the taken hair is easy to remove. X: Do not take more than 5 hairs.

2. Surface fluff resistance 15 × 15 cm on each of the above-mentioned products and comparative products, diameter 7c
Apply a load of 500 g to a disc-shaped sponge (Oe Co., Ltd., Kindori Cleaner No.5005) with a thickness of 2 cm and make a circle with a radius of 4 cm at the center of the disc-shaped sponge every 1 second / revolution. The number of fibers adhering to the disc-shaped sponge after 10 rounds was determined by visually observing rotation and inversion.

The evaluation criteria for judgment are as follows. ⊚: No fibers are attached. ◯: Almost no fibers are attached. Δ: Fibers are attached to the outer circumference of the disc.

The results of the above evaluations are shown in Table 1 below.

[0091]

[Table 1]

As is clear from Table 1, the products 1 and 2 which are bulky sheets of the present invention have good hair-collecting properties and fluff-proofing properties. In contrast,
Comparative products 1 and 2 have insufficient hair-collecting properties or anti-fluffing properties, and in particular, comparative product 2 has poor hair-collecting properties and is unsuitable as a cleaning article. Is.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified without departing from the gist of the present invention. For example, the method of supporting the cleaning sheet with the medicine may be such that the cleaning sheet is immersed in the medicine.

Further, the cleaning sheet can be directly manipulated with hands for cleaning, or can be attached to a tool with a handle and used as a cleaning article. 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.

[0095]

EFFECTS OF THE INVENTION The cleaning article of the present invention has an excellent ability to collect dust in a wide range from dirt such as fine dust to relatively large dirt such as bread crumbs, and the shape of the surface to be cleaned. In addition to being less affected by fluff, it has excellent fluff removal resistance, and also has good flexibility and texture.

[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 an entire manufacturing apparatus preferably used for manufacturing the cleaning sheet 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 (4)

[Claims] 1. A non-woven fabric base cloth formed by entanglement of fibers is integrated on one or both sides of a base sheet by partial bonding, and the base cloth has a concave portion at the bonding portion. And the non-bonded portion forms a convex portion,
A cleaning article having an uneven surface as a whole, characterized in that the constituent fibers of the non-woven base cloth bonded to at least one surface of the base sheet include heat-fusible fibers. Cleaning items. 2. The constituent fibers of the base cloth bonded to at least one surface of the base sheet are heat-fusible fibers 1 to 9.
The cleaning article according to claim 1, wherein the cleaning article contains 9% by weight. 3. The base cloth contains 0.1 to 500% by weight of a drug.
The cleaning article according to claim 1 or 2, wherein the cleaning article is carried (based on the weight of the base cloth). 4. The base sheet is a heat-shrinkable sheet, and the base cloth has a concave portion at its joint portion and a convex portion at its non-joint portion due to heat shrinkage of the base sheet due to heat treatment. The cleaning article according to claim 1, 2 or 3, wherein a part is formed.