JPH05192285A - Articles for cleaning and production thereof - Google Patents

Abstract

PURPOSE:To improve the ability to adsorb and hold stains, such as fine dust, by integrating nonwoven fabric-like fiber assemblages on one or both surfaces of a net-like sheet in an entangled state and depositing a specified amt. of drugs on the fiber assemblages. CONSTITUTION:The non-woven fabric-like fiber assemblage 12 formed by entanglement of fibers is integrated to the one surface of the net-like sheet 11 in the entangled state with the net-like sheet 11 together with the entanglement among the constituting fibers. Further, many rugged parts 12A, 12B are formed on the surface of the fiber assemblage to constitute a sheet 10 for cleaning. The drugs are arranged on such sheet at 0.1 to 500% of the weight of the fiber assemblage 12. The net-like sheet 11 which is formed in a grid form over the entire part is used. The surface of the fiber assemblage 12 is constituted with the fibers interlinked with each other and the fine dust, etc., sticking to the surface to be cleaned are captured between such constituting fibers. The drugs are exemplified by the drugs consisting essentially of oil components intended for substantially dry cleaning and detergents intended for substantially wet cleaning.

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, a large number of non-woven fabric-based materials have been proposed for cleaning articles. However, the conventional cleaning articles, such as chemical wipes, contain oily substances on flat woven fabrics and non-woven fabrics. It was generally impregnated, but high performance such as dust absorption ability to adsorb and remove dirt on the surface to be cleaned, dust retention ability to hold the removed dirt and scratch resistance on the cleaning surface Therefore, it has been proposed to use a softer and bulkier nonwoven fabric as a material for cleaning articles.

As a method for increasing the bulk of a non-woven fabric as a cleaning article, as described in JP-A-64-61546, a general non-woven fabric is formed and post-processing such as stitching is performed. As described in JP-A-124122,
What is raised, and JP-A-2-160962,
As described in Japanese Patent Application Laid-Open No. 2-191422, there may be mentioned one in which elastic fibers or crimpable fibers are used for all or part of the fibers constituting the nonwoven fabric.

Further, the development of a bulky non-woven fabric is described in JP-A-1-1.
As in Japanese Patent No. 64312, its use is not limited to cleaning articles, but is also applied to cushion materials, packaging materials, surface materials for sanitary goods, and the like.

[0005]

However, the above-mentioned bulky nonwoven fabric has the following problems. For bulking by general post-processing of non-woven fabric and bulking by raising,
In order to express bulkiness, a larger amount of non-woven fabric and fiber raw material must be used, and once pressure is applied for cleaning, the contact surface with the surface to be cleaned is fixed, and as a cleaning article, Since the inner layer non-woven fabric and fibers forming the apparent thickness of the non-woven fabric cannot contact the surface to be cleaned, the utilization of the non-woven fabric as the substrate is inefficient.

Further, the method of producing bulky unevenness by utilizing the stretchability and crimpability of the fiber itself has a capability of adsorbing and retaining dirt such as fine dust as compared with a general planar nonwoven fabric. Although improved, it is not possible to obtain the unevenness sufficient to capture large dirt such as bread crumbs by utilizing the unevenness of the nonwoven fabric.

Further, when the non-woven fabric is impregnated with an oily substance, it is easy to give a sticky feeling as in the case where a general planar non-woven fabric is impregnated with an oily substance, and it is easy to give a discomfort to a user.

To increase the bulkiness of the cushion material using a non-woven fabric,
When a film having bulkiness imparting property and a non-woven fabric are integrated, they are adhered and welded to each other, so that the degree of freedom of the non-woven fabric fiber is remarkably reduced. In general, non-woven fabrics as cleaning articles tend to have strong fiber-to-fiber joints so as not to generate or tear fiber wastes during cleaning, but a decrease in the degree of freedom of non-woven fabrics is due to the entanglement of non-woven fabrics. There is a problem of reducing the ability to collect cotton dust, lint, hair, etc., which is brought about by the effect.

Therefore, the object of the present invention is not only excellent in adsorption and retention of dirt such as fine dust, but also capture of large dirt such as bread crumbs utilizing the unevenness of the nonwoven fabric and the nonwoven fabric fiber having a high degree of freedom. Provided is a cleaning article having an excellent ability to collect cotton dust, lint, hair, etc., which is brought about by the entanglement effect of the fiber, and is less likely to cause fiber tears or tears during cleaning and has less sticky feeling on the hands, and a manufacturing method thereof. That is.

[0010]

According to the present invention, a non-woven fabric-like fiber aggregate formed by entanglement of fibers of a fibrous web is formed on one or both sides of a reticulated sheet together with the entanglement between its constituent fibers. To the cleaning sheet which is integrated in an entangled state and has a large number of irregularities formed on the surface of the fiber assembly, the chemical agent is added to the weight of the fiber assembly in an amount of 0. The above object is achieved by providing a cleaning article characterized by being carried by 1 to 500%.

The present invention also provides a method for producing the cleaning article, which is the method for producing the cleaning article according to claim 1, wherein the heat-shrinkable mesh sheet has one or both sides provided with a fibrous web. After laminating, the constituent fibers of the fibrous web and the mesh sheet or the constituent fibers of the fibrous web are entangled with each other, and at the same time the fibrous web becomes a non-woven fiber aggregate and is integrated with the mesh sheet. After that, by heating these and heat-shrinking the reticulated sheet, a concavo-convex shape is imparted over the entire nonwoven fabric-like fiber assembly portion to create a cleaning sheet, or before heating the cleaning sheet or The present invention also provides a method for producing a cleaning article, which comprises impregnating the cleaning sheet with a chemical after heating.

In the present invention, since the mesh sheet only shrinks and no unevenness is formed substantially, and the fiber assembly does not shrink substantially and is integrated with the mesh sheet, the mesh of the mesh The fiber assembly is raised to form a large number of irregularities. In addition, in the present invention, the fiber aggregate refers to one in which constituent fibers are entangled, and the fiber web refers to one before being entangled.

[0013]

In the cleaning article of the present invention, the cleaning sheet is
Since the heat-shrinkable mesh sheet is shrunk after forming the nonwoven fabric-like fiber aggregate that is integrated with the mesh sheet in the entangled state together with the entanglement between the fibers of the fibrous web, the nonwoven fabric The fibers that make up the fiber-like aggregates are arranged in a wavy pattern to increase the degree of freedom of the fibers, and the sheet as a whole is given a large number of irregular shapes to become bulky, from small dust to bread crumbs and hair. Entangles even a relatively large amount of dust to reliably collect a wide range of dust. In addition, the entanglement and integration with the net-like sheet makes it a sheet in which fiber waste is less likely to come out and break.

Further, with the amount of the drug carried in the cleaning article of the present invention, the feeling of stickiness due to the drug is small while providing a sufficient cleaning effect.

[0015]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a sectional view showing a state in which a mesh sheet and a fibrous web are superposed at the initial stage of manufacturing the cleaning sheet used in the first embodiment of the present invention, and FIG. 2 is a cleaning used in the second embodiment of the present invention. Sectional view showing a state in which the mesh sheet and the fibrous web are superposed at the initial stage of manufacturing the cleaning sheet, FIG. 3 is a sectional view of an example of the finished cleaning sheet shown in FIG. 1, and FIG. 4 is a cleaning sheet shown in FIG. A cross-sectional view of an example of a finished sheet product, FIG. 5 is a schematic view showing an entire manufacturing apparatus suitably used for manufacturing the cleaning sheet shown in FIG. 4, and FIG. 6 is a plan view of a net used as a mesh sheet. 7 is a plan view of a reticulated web used as a reticulated sheet, FIG. 8 is a plan view of a perforated film used as a reticulated sheet, and FIG. 9 is a perspective view showing a state in which a cleaning sheet is attached to a patterned tool.

First, the cleaning article of the first embodiment of the present invention shown in FIG. 3 will be described. In the cleaning article of the first embodiment, a non-woven fabric-like fiber aggregate 12 formed by entanglement of fibers on one surface of a net-like sheet 11 (13, 14) is included in the net-like sheet 11 together with the entanglement between its constituent fibers. (13, 14) is integrated in an entangled state, and a large number of uneven portions 12A, 12B are formed on the surface of the fiber assembly 12, the cleaning sheet 10 Is supported by 0.1 to 500% with respect to the weight of the fiber assembly 12.

The mesh sheet 11 (13, 14) is a broad concept including a perforated film having a large number of holes. For example, the net 11 shown in FIG. 6 and the holes shown in FIG. 7 are formed. It includes a reticulated web 13 made of a latent crimp expressing fiber assembly and a perforated film 14 having a large number of holes as shown in FIG.

As the net 11 serving as the net-like sheet, as shown in FIG. 6, a net formed in a lattice form as a whole is used, but the net-like sheet 11 (13, 14).
The shape of the holes formed in the can be variously modified. For example, as shown in FIG.
It may have a star shape as shown in (a), a round shape as shown in (b), or a combination of a round shape and a star shape as shown in (c). May be

Further, as shown in FIG. 3, in the fiber assembly 12, the non-joint portion with the mesh sheet 11 (13, 14) is formed as a convex portion 12A, and the mesh sheet 11 (13, 1) is formed.
The joint portion with 4) is formed as a concave portion 12B. The fiber assembly 12 has a large number of convex portions 1
An uneven surface having a cushioning property is formed by 2A and the concave portion 12B between them.

The surface of the fiber assembly 12 is composed of entangled fibers and traps fine dust and the like adhering to the surface to be cleaned between these constituent fibers.

The constituent fibers of the fiber assembly 12 are:
For example, polyester-based, polyamide-based, polyolefin-based thermoplastic fibers, or composite fibers thereof,
Any of split fibers or ultrafine fibers produced by the melt blown method, semi-synthetic fibers such as acetate, recycled fibers such as cupra and rayon, or natural fibers such as cotton (cotton) may be used, or a mixed cotton thereof may be used. The basis weight, fineness, fiber length, cross-sectional shape, entanglement degree, and strength of the fiber assembly that constitutes the non-woven fiber assembly portion are determined according to the purpose of use by comprehensively considering processability, cost, etc. To be done.

Further, the net 11 as the mesh sheet.
It is preferable to use a heat-shrinkable material.
By using a contractible net, the cleaning sheet 10
The heat generated by the heat treatment of the heat shrinkable net
Due to the shrinkage, a large number of uneven parts are formed on the surface of the fiber assembly.
Can be formed. As the heat-shrinkable net,
Fin type, such as polyethylene, polypropylene,
Rib-ten etc., polyester type, for example, polyethylene te
Polyphthalic acid such as lephthalate and polybutylene terephthalate
Mid type, for example, nylon 6, nylon 66, etc.
Ronitrile-based and vinyl-based, vinylidene-based, such as
Polyvinyl chloride, polyvinylidene chloride, etc.
Thermoplastic polymers such as plastics, alloys, mixtures of these
It is a configured net, of the intended cleaning sheet
One that contracts in a uniaxial or biaxial direction depending on the uneven shape,
Or a filament which is heat-shrinkable with the above-mentioned thermoplastic polymer
Weaving using at least one of warp or weft
A knitted net is preferable, and the intended cleaning sheet
It is appropriately selected according to the uneven shape of.

The perforated film 14 as the mesh sheet is uniaxially or biaxially made of the thermoplastic polymer.
A film that is provided with holes by punching or the like can be used as the film that contracts in the axial direction.

The reticulated web 13 as the reticulated sheet is, for example, a monoolefin polymer or copolymer such as ethylene, propylene or butene, high density polyethylene, low density polyethylene, linear low density polyethylene or polypropylene. , Ethylene / propylene copolymer,
Ethylene / vinyl acetate copolymer, etc., polyethylene terephthalate, ester-based polymers and copolymers such as polybutylene terephthalate, polyvinyl chloride, vinyl-based polymers such as polyvinylidene chloride, vinylidene-based polymers and copolymers,
Heat-shrinkable fibers made of polyamide-based polymers and copolymers such as nylon 6 and nylon 66, acrylonitrile-based polymers and copolymers, or mixtures thereof, or latent crimps that develop crimps when heated. An expression fiber, or a mixture of these fibers, which are integrated with each other in an entangled state, is used.

The reticulated web 13 is formed from a fibrous web in a reticulated form by a high-speed liquid flow or an air flow, and the constituent fibers are entangled with each other to form a fibrous aggregate sheet having a reticulated pattern, or a constitution. A specific pore size in a sheet-like material in which fibers are entangled with each other and integrated,
A fiber aggregate sheet punched by punching with a hole pitch or a hole pattern, or a constituent fiber made by another method is integrated by entanglement, and a specific hole diameter, hole pitch, hole pattern Any mesh sheet may be used.

When the net 11 is used as the reticulated sheet, the mesh, wire diameter, inter-line distance, hole diameter, hole pitch, hole pattern, etc. are the contraction force of the net 11 and the net 1.
It is necessary to determine the shape and degree of the uneven portions 12A and 12B formed by the shrinkage of No. 1 and the partial entanglement with the non-woven fiber aggregate. Specifically, the wire diameter is preferably 20 μm to 500 μm, more preferably 100 μm to 200 μm, and the distance between the wires is preferably 2 mm.
-30 mm, more preferably 4-20 mm.

When the reticulated web 13 or the perforated film 14 is used as the reticulated sheet, the aperture diameter thereof is preferably 4 mm to 40 mm, more preferably 8 mm to 20 mm, and the gap between the apertures is It is 2 mm to 20 mm, more preferably 4 mm to 10 mm. When a reticulated sheet other than the above is used, the pore size and the like can be selected according to the reticulated sheet.

Next, the cleaning article of the second embodiment of the present invention shown in FIG. 4 will be described. In the cleaning article of the second embodiment, the fiber aggregate 12 is arranged on both sides of the mesh sheet 11 (13, 14), and the fiber aggregate 12 is arranged on both sides of the mesh sheet 11 (13, 14). Except that
The configuration is similar to that of the first embodiment described above.

In the case of the cleaning sheet in which the fiber aggregates are arranged on both sides of the mesh sheet as in the second embodiment, the fiber aggregates on both sides of the sheet may be the same or different. By using different fiber aggregates on both sides of the sheet, such as different types of constituent fibers, it is possible to make products that can be used on both sides of the sheet according to the purpose of use, or products that have different textures on both sides of the sheet. It is possible to

In the cleaning article of the present invention, 0.1 to 500% by weight (based on the weight of the fiber aggregate) of the chemical is carried on the fiber aggregate 12 of the cleaning sheet 10. Examples of such a chemical include those mainly containing an oil component for the purpose of substantially dry dry cleaning, and detergents for the purpose of substantially wet wet cleaning.

As the above oil agent 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.

Alkylbenzene oil, polyolefin oil, polyglycol oil, etc. are used as the synthetic oil, and chain dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylhydrogenpolysiloxane, various modified silicones, etc. are used as the silicone oil. Is 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 mineral oil, the synthetic oil and the silicone oil 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. The surface tension (25 ° C.) is preferably 15 to 45 dyn / cm, particularly preferably 20 to 35 dyn / cm. 15
If it is less than dyn / cm, the dust adsorption is poor and 45 dyn
This is because if it is larger than / cm, it becomes difficult to spread it evenly on the fibers constituting the nonwoven fabric.

The amount of the above oil component carried is 0.1 to 80%, preferably 0.5 to 40, based on the weight of the fiber assembly.
%, Particularly preferably 1 to 20%, and by supporting at this ratio, the dust absorption ability and the dust retention ability can be increased. This is because when the amount of the oil agent component carried is less than 0.1%, the dust absorption and dust holding ability is not sufficiently increased by the addition of the oil agent component, and when it is more than 80%, the stickiness to the hand is significantly deteriorated. Since the cleaning article of the present invention has irregularities formed on the surface of the fiber assembly, even if a relatively large amount of the oil agent component is carried on the fiber assembly, the oil agent component does not adhere to the hand when touched. It is less sticky and less sticky.

The oil component is, as described above, 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, the surface tension, etc., depend on the purpose of cleaning and the kind of constituent fiber of the nonwoven fabric. It can be decided as appropriate. Further, if necessary, an antibacterial agent, an antifungal agent, a bactericidal agent and the like can be included.

The cleaning agent is preferably an aqueous solution containing at least one of a surfactant, a solvent and an alkaline agent.

Examples of the above-mentioned surface active agent include various kinds of surface active agents such as nonionic, cationic, anionic and amphoteric. As the above-mentioned anionic surfactant, a usual sulfonate-based anionic surfactant and sulphate-based anionic surfactant are used. As the sulfonate-based anionic surfactant, a linear or branched alkyl (C
_{8 to} C ₂₂ ) benzene sulfonate, long-chain alkyl (C ₈
-C ₂₂₎ sulfonate, long-chain olefins (C ₈ ~C ₂₂₎
There are sulfonates and the like. As the sulfate type anionic surfactant, a long chain monoalkyl (C ₈ ~
C ₂₂ ) Sulfate ester salt, polyoxyethylene (1 to 6 mol) long-chain alkyl (C _{8 to} C ₂₂ ) ether sulfate ester salt, polyoxyethylene (1 to 6 mol) alkyl (C ₈
To C ₁₈ ) phenyl ether sulfate ester salt and the like. The cations as counterions of these anionic surfactants are alkali metal ions such as sodium and potassium, alkanolamine ions such as monoethanolamine, diethanolamine and triethanolamine. As the anionic surfactant, a sulfonate surfactant is preferable because it has a strong resistance to hydrolysis. Further, from the viewpoint of detergency, a long-chain or branched-chain alkylbenzene sulfonate is preferable. Examples of the amphoteric surfactant include carbobetaine, sulfobetaine, and hydroxysulfobetaine having an alkyl group having 8 to 22 carbon atoms. The nonionic surfactant and the cationic surfactant may be the same as those contained in the oil component. Examples of the solvent include alcohols such as ethanol and isopropanol, glycols such as ethylene glycol and propylene glycol, glycol ethers such as ethylene glycol monoethyl ether and propylene glycol monomethyl ether, and the above alkalis. Examples of the agent include alkanolamines such as monoethanolamine. Further, the above-mentioned cleaning agent may contain components such as a bactericidal agent, a deodorant, and a fragrance, if necessary.
The amount of these cleaning agents carried is preferably 50 to 500%, and more preferably 100 to 300%, based on the weight of the fiber assembly. Can be increased. If the amount of cleaning agent carried is less than 50%, the area that can be cleaned is too small,
On the other hand, if it exceeds 500%, the cleaning active substance that cannot be retained in the sheet during cleaning is dripping and is not preferable.

Further, the cleaning sheet according to the present invention can be used as a cleaning article by attaching it to a tool with a handle in addition to directly cleaning the sheet with hands. The patterned tool is not particularly limited in its form,
Examples thereof include mop-like, handy mop-like, and hataki-like ones, and in particular, the cleaning portion is preferably planar when viewed macroscopically. FIG. 9 shows an example of the above-mentioned tool with a handle, and reference numeral 40 in the figure is a cleaning section thereof. In this way, by attaching the cleaning sheet to a tool with a handle, it is possible to clean a hard-to-reach place such as a gap in furniture or the ceiling with the cleaning sheet, and to collect fine dust once collected. The performance of the cleaning sheet, which is excellent in holding bread crumbs, hair, cotton dust, etc., can be sufficiently exerted.

Next, a preferred embodiment of the method for manufacturing a cleaning article according to the present invention will be described.

As shown in FIGS. 1 and 2, after the fiber web 12 is laminated on one side or both sides of the uniaxially or biaxially heat-shrinkable mesh sheet 11 (13, 14), the mesh sheet 11 ( (13, 14) fibers of the fibrous web 12 on one side and fibers of the fibrous web 12 on the other side, and fibers of the fibrous web 12 and the mesh sheet 11 (13, 14)
At the same time that the fiber webs 12 are entangled and integrated, each fiber web 12 is made into a non-woven fiber aggregate by entanglement. Then, the obtained fiber assembly is subjected to heat shrinkage of the heat-shrinkable mesh sheet 11 (13, 14) at the same time as the drying or separately from the drying step, so that the constituent fibers of the non-woven fiber assembly are wavy. The ridges are arranged in a ridge to give an uneven shape as a whole.

That is, as shown in FIG.
The fibrous web 12 is continuously fed out through the feeding device 22 from each of the card machines 21A and 21B for making. On the other hand, the roll 23 of the mesh sheet 11 (13, 14) is arranged between the card machines 21A and 21B, and the roll 2
3 to the reticulated sheet 11 (13, 1)
4) is paid out.

Then, the fiber webs 12 are superposed on both sides of the mesh sheet 11 (13, 14) by the pay-out rolls 22 and are carried into the water needling device 26. Here, due to the jet water flow, the fiber web 12
Fibers of the mesh sheet and the mesh sheet 11 (1
The fiber webs 12 on both sides of (3, 14) are entangled with each other to prepare a sheet as shown in FIG.

Fiber assembly 12 and mesh sheet 1 after entanglement
1 (13, 14) is passed through a nip roll 27, carried into a heating device 28 for drying and heat shrinking, and heat treated. By this heat treatment, the mesh sheet 11 (13,
14) heat-shrinks to form convex portions 12A and concave portions 12B on the nonwoven fabric-like fiber aggregate 12 entangled with the mesh sheet 11 (13, 14) as shown in FIG. 4 as an example. In the heating step by the heating device 28, the non-woven fiber aggregate 12 and the heat-shrinkable mesh sheet 11 (13, 14) are integrated at a suitable temperature and time. These conditions differ depending on the heat-shrinkable mesh sheet 11 (13, 14), but may be set to a shrinkage ratio for obtaining the required uneven shape. However, in the continuous joined sheet state, when shrinking in the sheet flow direction, the speed difference between the inlet side and the outlet side of the heat treatment section becomes an important point. That is, when the tensile force is larger than the shrinkage stress, it is desirable to match the front and rear speed ratios to those close to the required shrinkage ratio.

The method of carrying the medicine on the cleaning sheet is not particularly limited, but for example, as shown in FIG.
As shown in FIG. 5, the spraying device 31 is provided between the nip roll 29 and the winder 30 to apply the toner. The application of the drug is appropriately determined depending on the type of the drug, before the heat treatment of the fiber assembly and the mesh sheet or after the heat treatment.

When the cleaning sheet is in the continuous sheet state,
It may be wound into a roll, or may be subsequently cut to a required length, folded if necessary, and packaged.

The cleaning article after applying the chemicals is the nip roll 2
It is wound around the winder 30 via 9.

As shown in FIG. 1, the mesh sheet 11 (1
3, 14), when the fibrous web 12 is laminated on one side, when the non-joint portion with the mesh sheet 11 (13, 14) is formed as the convex portion 12A, the convex portion 12A is formed as shown in FIG.
Not only in the case where the mesh sheet 11 (13, 14) is formed on only one surface as described above, the convex portion 12A has the mesh sheet 1
1 (13, 14) is randomly formed on both surfaces, and an uneven surface is generally formed as a whole, and similarly,
As shown in FIG. 2, even when the fiber web 12 is laminated on both surfaces of the mesh sheet 11 (13, 14), the constituent fibers between the fiber aggregates arranged on both surfaces of the mesh sheet 11 (13, 14) are mesh-shaped. When the non-joint portion with the sheet 11 (13, 14) is also entangled, the mesh sheet 1 of FIG.
The convex portions 12A on both sides of the sheet No. 1 (13, 14) are integrated with each other and the convex portions 12A are formed on either side of the sheet.
Will be formed, and the mesh sheet 11 (13, 1) will be formed.
The convex portions 12A are randomly formed on both surfaces of 4), and the uneven surface is formed as a whole, and these are all included in the examples of the present invention.

When a film having apertures is used as the mesh sheet, or when a net having a large wire diameter or a small aperture is used, the fiber aggregates existing on the front and back sides are strongly entangled with each other through the holes, Since the fibers on the film or in the lattice are difficult to be entangled with the apertured film or the net, concavo-convex shape is formed by bulging the fibers on the film or on the lattice contrary to the above case. In particular, when a net is used as the mesh sheet and the fiber webs are laminated and entangled on both sides of the net, the recesses are easily formed because the fibers of the fiber web are strongly entangled with each other with the holes of the net interposed therebetween.

Further, the cleaning article of the present invention will be described based on specific examples. (Product 1) Polyester fiber 1.5 denier, 51 mm
To form a fiber web having a basis weight of 10 g / m ² using a conventional card, wrapping the fiber web into three layers (30 g / m ² ) (not shown), and using a biaxial polypropylene biaxial sheet as a mesh sheet. Shrinking net (5 mesh / wire diameter 0.2
mm) as an intermediate layer, and the fibrous webs were laminated on upper and lower layers and then entangled by water needling. At that time, water needling was performed at a water pressure of 40 kg / cm ² , a nozzle pitch of 1.6 mm, and a speed of 5 m / min. After that, 130 ℃
The net is shrunk at the same time as drying by heat-treating with hot air for 50 seconds, and then 95% liquid paraffin and a nonionic surfactant [polyoxyethylene (average addition mole number 3.3) alkyl (C ₁₂ ~
C ₁₃ ) ether] 5% drug (viscosity 125 cps
, Surface tension of 30 dyn / cm) at a ratio of 5% to the fiber weight (weight of the fiber assembly), and the area shrinkage ratio is 10
% Example 1 having an unevenness on the surface was obtained.

(Product 2) Polyester fiber 1.5 denier
6 parts of 51 mm, rayon fiber 3 denier 51 mm
Using a mixture of 4 parts and 4 parts of
10 g / m²Forming a fibrous web of
5 layers (basis weight 50g / m²) Wrapping (not shown)
As a mesh sheet, polypropylene biaxially shrinkable
Layer (5 mesh / diameter 0.2 mm) as the lower layer
After stacking the upper layer on the upper layer, entangle with water needling
Let At that time, the water needling pressure is 40
kg / cm ², Nozzle pitch 1.6mm, speed 5m / min
It was. After drying this fiber assembly, gravure coating
More silicone (Toray Silicone SM5571) fiber
10% of the weight (weight of fiber assembly)
did. After that, heat treatment with hot air at 130 ° C. for 60 seconds
By doing so, the net shrinks and the area shrinkage rate is 25%.
A product 2 having irregularities on its surface was obtained.

(Product 3) Polyester fiber 1.5 denier
5 parts of 51 mm and rayon fiber 1.5 denier,
A card of standard method using a mixture of 51 mm and 5 parts
And basis weight of 10 g / m ²Forming a fibrous web of
2 layers of web (basis weight 20 g / m²) Wrapping (not shown)
The biaxial contraction of polypropylene as a mesh sheet.
Runet (5 mesh / wire diameter 0.2 mm) in the middle layer
After layering the web into upper and lower layers, water needling
I entangled with Gu. At that time, the water needling
Water pressure 40kg / cm², Nozzle pitch 1.6mm, speed 5m /
I went at min. Then, with hot air of 145 ° C, 30 seconds
By heat-treating for a while, the net shrinks simultaneously with drying.
After spraying, spray a nonionic surfactant
Xyethylene (average number of moles added: 5) alkyl (C₁₂~ C
₁₃) Ether] 0.5%, ethanol 5% and propylene
Made from an aqueous solution containing 5% glycol glycol monomethyl ale
The amount of the drug is 120 with respect to the fiber weight (weight of the fiber assembly).
%, And the surface shrinkage rate is 15%
A working product 3 was obtained.

(Comparative Product 1) A product of Comparative Example 1 having no irregularities formed on its surface except for the shrinking step was used as Comparative Product 1. The comparative product 1 was prepared in the same manner as the working product 1 in other points.

(Comparative Product 2) In Comparative Product 2, the product which is not provided with the chemical is designated as Comparative Product 2. In other respects, the comparative product 2 was prepared in the same manner as the working product 1.

(Comparative product 3) Polyester fiber 1.5 denier and 51 mm were used, and the basis weight was 10 g / m with a conventional card.
² of the fibrous web is formed and 7 layers (70
g / m ² ) and entangled with a water needling. At that time, water needling was performed at a water pressure of 40 kg / cm ² , a nozzle pitch of 1.6 mm, and a speed of 5 m / min. Thereafter, the same chemicals as those of the product 1 were applied by spraying to obtain a product 3 for comparison.

(Comparative product 4) Polyester fiber 1.5 denier and 51 mm were used, and the basis weight was 10 g / m with a conventional card.
A fibrous web of No. ² was formed, and the fibrous web was lapped (not shown) into 5 layers (basis weight: 50 g / m ² ) and entangled with a water needling. At that time, water needling was performed at a water pressure of 40 kg / cm ² , a nozzle pitch of 600 nozzles / m, and a speed of 5 m / min. A rubber catan thread (manufactured by Ushida Co., Ltd.) was applied to the fiber assembly by spraying with the same chemicals as in Example 1, and was stretched at a stretch rate of 125% to 4 in the flow direction.
A pleated sheet having a shrinkage ratio of 25% was manufactured by sewing with a sewing machine at a place, and this was designated as Comparative product 4.

(Comparative product 5) In Comparative product 3, PP (polypropylene) crimped fiber 1.5 was used as a raw material for the fibrous web.
Comparative product 5 was made by using denier and 51 mm.

(Comparative product 6) A heat-shrinkable PP (polypropylene) film having no holes on one surface of comparative product 3 was partially heat-sealed by ultrasonic waves, and then heat-treated with hot air at 110 ° C. for 30 seconds. By doing so, a comparative product 6 having an unevenness on the surface having an area shrinkage of 10% was obtained.

The following evaluations were made for each of the above-mentioned embodied product and the comparative product. The results are shown in [Table 1] below.

1. Dust collection capacity: 1g of 7 types of test dust (JIS Z8901) with a composition of 30 × 30 cm, which is close to the composition of soil and sand dust, is evenly spread, and 7 × 11
Each of the above-mentioned embodied products and the comparative product was stuck and fixed on a sponge having a size of cm, and 10 reciprocations were repeated to determine the amount of dust adsorbed by the above-mentioned embodied products and the comparative product.

Further, after dropping the excess dust by dropping the sponge 10 times from a height of 30 cm with the surface of each of the execution products and the comparison product attached to the above sponge facing down, the comparison product with each of the execution products described above. The amount of dust remaining in the sample was evaluated as the retained amount.

2. Capability of collecting hair About 10 cm of human head hair is sprinkled so that they do not overlap closely, and a sponge of 7 x 11 cm is fixed by sticking each of the above-mentioned implementation products and comparative products, and reciprocating it 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.

3. Bread crumbs collecting capacity 1 x 1g of bread crumbs (Nisshin Flour Milling Co., Ltd. soft bread crumbs) is spread on the area of 30 x 30 cm, and the sprinkles of 7 x 11 cm are pasted with the above-mentioned products and comparative products. It was fixed and reciprocated three times over it, and 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 removed, and it is difficult to remove the removed bread crumbs. ○: Most of the bread crumbs are removed, but the bread crumbs taken may fall off. B: Some bread crumbs are removed, but the taken bread crumbs are easily dropped. X: Almost no bread crumbs are taken.

4. Effective utilization of non-woven fabric 1g of 7 kinds of test dust (JIS Z8901), which is close to the composition of soil and dust, is spread evenly in an area of 30 × 30cm, 7 × 11
Each of the above-mentioned embodied product and the comparative product was attached and fixed to a sponge having a size of cm, and reciprocated 10 times to visually evaluate the degree of dirt on the surface of the cleaning article.

The criteria for the visual evaluation are as follows. ◯: Most of the area of the cleaning article is soiled with dust. Δ: Not all the surfaces of the cleaning article, but 50% or more of the area is soiled. X: The area of less than 50% of the cleaning article is soiled.

5. Stickiness The organoleptic evaluation of the stickiness when the above-mentioned each embodied product and the comparative product were touched by hand was performed.

The criteria for sensory evaluation are as follows. ○: Almost no stickiness is felt. Δ: A little sticky is felt. X: Feels very sticky.

[0071]

[Table 1]

As is clear from [Table 1], according to the cleaning article of the present embodiment, the amount of dust adsorbed, the amount of dust retained, the ability to collect hair, the ability to collect bread crumbs, the effective utilization of the nonwoven fabric, Good results were obtained in all points of each evaluation item of stickiness. On the other hand, each comparative product is inferior in the amount of adsorbed dust and the amount of retained dust, and even if it is good in some evaluations, it cannot satisfy other evaluations.

That is, according to the present embodiment, it is possible to obtain an effect that it is excellent in dust absorption and dust retention, is also excellent in collecting large dust such as hair and bread crumbs, and has almost no sticky feeling on the hand. Play.

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, as a method of supporting the cleaning sheet with the medicine, the cleaning sheet may be immersed in the medicine.

[0076]

EFFECTS OF THE INVENTION According to the cleaning article of the present invention, not only is it excellent in adsorption and retention of dirt such as fine dust, but also the degree of freedom in capturing large dirt such as bread crumbs utilizing the unevenness of the non-woven fabric. Excellent in the ability to collect cotton dust, lint, hair, etc., which is brought about by the entanglement effect of high-performance non-woven fibers,
In addition, it is difficult for the fiber scraps to come out or break during cleaning, and there is little stickiness on the hands.

Furthermore, according to the method of manufacturing a cleaning article of the present invention, the cleaning article can be preferably manufactured.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a net-like sheet and a fibrous web are superposed on each other at an early stage of manufacturing the cleaning sheet used in the first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a mesh sheet and a fibrous web are superposed on each other at the initial stage of manufacturing the cleaning sheet used in the second embodiment of the present invention.

FIG. 3 is a cross-sectional view of an example of a finished product of the cleaning sheet shown in FIG.

FIG. 4 is a cross-sectional view of an example of a finished product of the cleaning sheet shown in FIG.

FIG. 5 is a schematic view showing an entire manufacturing apparatus preferably used when manufacturing the cleaning sheet shown in FIG.

FIG. 6 is a plan view of a net used as a mesh sheet.

FIG. 7 is a plan view of a reticulated web used as a reticulated sheet.

FIG. 8 is a plan view of a perforated film used as a mesh sheet.

FIG. 9 is a perspective view showing a state in which the cleaning sheet is attached to the patterned tool.

[Explanation of symbols]

 10 Cleaning Sheet 11 (13, 14) Mesh Sheet 12 Fiber Assembly (or Fiber Web) 12A Convex Part 12B Concave Part

Claims (6)

[Claims] 1. A non-woven fabric-like fiber assembly formed by entanglement of fibers of a fibrous web on one or both sides of a reticulated sheet together with entanglement between its constituent fibers and also in an entangled state with respect to the reticulated sheet. A cleaning sheet which is integrated and has a large number of irregularities formed on the surface of the fiber assembly is provided with a chemical agent in an amount of 0.1 to 50 relative to the weight of the fiber assembly.
A cleaning article characterized by being carried by 0%. 2. The net-like sheet is a heat-shrinkable thermoplastic resin net obtained by drawing or a heat-shrinkable net woven or knitted with drawn thermoplastic resin filaments. The cleaning article according to claim 1, wherein: 3. The cleaning article according to claim 1, wherein the agent contains at least one of mineral oil, synthetic oil, silicone oil, and surfactant. 4. The cleaning article according to claim 3, wherein the mineral oil, the synthetic oil and the silicone oil have a viscosity (25 ° C.) of 5 to 1000 cps. 5. The cleaning article according to claim 1, wherein the cleaning article is attached to a tool with a handle. 6. The method of manufacturing a cleaning article according to claim 1, wherein the fiber web is laminated on one side or both sides of the heat-shrinkable mesh sheet, and the constituent fibers of the fiber web and the mesh sheet or Entangling the constituent fibers of the fibrous web, and at the same time when the fibrous web becomes a non-woven fiber aggregate and is integrated with the reticulated sheet, these are heated to heat-shrink the reticulated sheet. According to the above, a cleaning sheet is formed by giving an uneven shape to the entire nonwoven fabric-like fiber assembly portion, and the cleaning sheet is impregnated with a chemical before or after heating the cleaning sheet. Manufacturing method of cleaning article.