JP3621376B2 - Dry cleaning sheet and manufacturing method thereof - Google Patents

Description

【００７２】
〔表１〕から明らかなように、本実施品及び参考品による清掃用シートによれば、ダスト吸着量、ダスト保持量、髪の毛の捕集能、パンくず捕集能、不織布の有効利用性、べたつき性の各評価項目のすべての点において良好な結果を得ることができた。これに対して各比較品では、ダスト吸着量及びダスト保持量の点において劣っており、たとえ一部の評価において良好であっても他の評価を満たすことができない。
【００７３】
即ち、本実施例によれば、吸塵、保塵性に優れ、また、髪の毛やパンくず等の大きなゴミの捕集性にも優れ、しかも手へのべたつき感がほとんどないという効果を奏する。
【００７４】
本発明は上述した実施例に限定されることなく、本発明の要旨を逸脱しない範囲で種々変形可能である。
【００７５】
例えば、清掃用シートに対する薬剤の坦持方法は、該清掃用シートを薬剤中に浸漬等させるものであってもよい。
【００７６】
【発明の効果】
本発明の乾式清掃用シートによれば、細かなダスト等の汚れの吸着能及び保持能に優れることはもとより、不織布の凹凸性を利用したパン粉等の大きな汚れの捕獲や自由度の高い不織布繊維の絡み効果によってもたらされる綿ぼこり、糸くず、髪の毛等の捕集能に優れ、且つ清掃時に繊維屑を出したり破れたりし難く手のべたつき感も少ない。
【００７７】
更に、本発明の乾式清掃用シートの製造方法によれば、上記乾式清掃用シートを好適に製造することができる。
【図面の簡単な説明】
【図１】図１は、本発明の第１実施例に用いられる清掃用シートの製造初期における網状シートと繊維ウェブとを重ね合わせた状態を示す断面図である。
【図２】図２は、本発明の第２実施例に用いられる清掃用シートの製造初期における網状シートと繊維ウェブとを重ね合わせた状態を示す断面図である。
【図３】図３は、図１に示す清掃用シートの完成品の一例の断面図である。
【図４】図４は、図２に示す清掃用シートの完成品の一例の断面図である。
【図５】図５は、図４に示す清掃用シートを製造する際に好適に用いられる製造装置全体を示す概略図である。
【図６】図６は、網状シートとして用いられるネットの平面図である。
【図７】図７は、網状シートとして用いられる網状ウェブの平面図である。
【図８】図８は、網状シートとして用いられる有孔フィルムの平面図である。
【図９】図９は、清掃用シートを柄付き道具に取り付けた状態を示す斜視図である。
【符号の説明】
１０ 清掃用シート
１１（１３、１４） 網状シート
１２ 繊維集合体（又は繊維ウェブ）
１２Ａ 凸状部
１２Ｂ 凹状部[0001]
[Industrial application fields]
The present invention is for business use and home use using non-woven fabric.DryFor cleaningSheetAnd a manufacturing method thereof.
[0002]
[Prior art]
Conventionally, many non-woven fabric-based materials have been proposed for use as cleaning articles. However, chemical wipes that are conventional cleaning articles are made by impregnating oily substances into flat woven fabrics and non-woven fabrics. Although it was general, it is more flexible for high performance such as dust absorption ability to adsorb and remove dirt on the surface to be cleaned, dust retention ability to keep the dirt removed and prevention of scratches on the cleaning surface It is proposed to use a bulky nonwoven fabric as a material for cleaning articles.
[0003]
As a method for increasing the bulk of a nonwoven fabric as a cleaning article, as described in JP-A No. 64-61546, after forming a general nonwoven fabric, post-processing such as stitching, JP-A-2-124122 As described in the gazette, it is possible to raise or to stretch or crimp the whole or part of the fibers constituting the nonwoven fabric, as described in JP-A-2-160962 and JP-A-2-191422. Examples include those using fibers.
[0004]
In addition, the development of bulky nonwoven fabrics is performed not only for cleaning articles, but also for cushioning materials, packaging materials, or surface materials for sanitary products, as disclosed in JP-A-1-16412. .
[0005]
[Problems to be solved by the invention]
However, the above-described bulky nonwoven fabric has the following problems.
In bulk increase by post-processing of general nonwoven fabric and bulk increase by raising, in order to express the bulk, a larger amount of nonwoven fabric and fiber raw material must be used, and once cleaning is performed by applying pressure, Since the contact surface with the surface to be cleaned is fixed and the inner layer nonwoven fabric and the fibers constituting the apparent thickness of the nonwoven fabric as a cleaning article cannot contact the surface to be cleaned, the nonwoven fabric that is the substrate The utilization of is inefficient.
[0006]
In addition, the method for generating bulky irregularities by utilizing the stretchability and crimpability of the fiber itself improves the ability to adsorb and retain dirt such as fine dust compared to a general flat nonwoven fabric. The unevenness sufficient to capture large dirt such as bread crumbs utilizing the unevenness of the nonwoven fabric cannot be obtained.
[0007]
In addition, when the nonwoven fabric is impregnated with an oily substance, it is easy to give a sticky feeling equivalent to the case where an oily substance is impregnated with a general flat nonwoven fabric, and the user is likely to feel uncomfortable.
[0008]
Increasing the bulk of a cushion material using a nonwoven fabric is bonded and welded when the bulky film and the like are integrated with the nonwoven fabric, and the degree of freedom of the nonwoven fabric fiber is significantly reduced. In general, non-woven fabrics as cleaning articles tend to strengthen the bonding between fibers so that they do not generate or break fiber waste during cleaning. There is a problem of reducing the ability to collect cotton dust, lint, hair, and the like caused by the effect.
[0009]
Accordingly, the object of the present invention is not only excellent in the ability to adsorb and retain dirt such as fine dust, but also captures large dirt such as bread crumbs using the unevenness of the nonwoven fabric and the entanglement effect of the nonwoven fabric with a high degree of freedom. It has excellent ability to collect cotton dust, lint, hair, etc. caused by, and has little stickiness of hand because it is difficult to splinter or tear fiber waste during cleaning.DryFor cleaningSheetAnd a method of manufacturing the same.
[0010]
[Means for Solving the Problems]
The present inventionHeat shrinkableNon-woven fiber aggregates formed by entanglement of fibers of the fiber web are integrated on one or both sides of the mesh sheet in an entangled state with the mesh sheet together with the entanglement between the constituent fibers. ,andBy thermally shrinking the mesh sheet, the fiber assembly does not substantially shrink,The fiber assembly comprises a cleaning sheet in which the fibers of the fiber assembly are raised and arranged in a wave shape and a large number of irregularities are formed on the surface thereof, and a drug containing an oil component is supported on the cleaning sheet. The supported amount is 1 to 20% with respect to the weight of the fiber assembly.Used by attaching to a tool with a handleThe above object is achieved by providing a dry cleaning sheet.
[0011]
The present invention also provides:Non-woven fiber aggregates formed by entanglement of fibers of the fiber web are integrated on one or both sides of the mesh sheet in an entangled state with the mesh sheet together with the entanglement between the constituent fibers. The fiber assembly has a cleaning sheet in which the fibers of the fiber assembly are raised and arranged in a wavy shape and a large number of irregularities are formed on the surface thereof, and a drug containing an oil component is supported on the cleaning sheet, The supported amount of the oil component is 1 to 20% based on the weight of the fiber assembly.A method for producing a dry cleaning sheet, wherein a fiber web is laminated on one or both sides of a heat-shrinkable mesh sheet, and then the constituent fibers of the fiber web and the mesh sheet or the constituent fibers of the fiber web are entangled with each other. The fiber web becomes a non-woven fiber assembly and at the same time is integrated with the reticulated sheet and then heated to thermally shrink the reticulated sheet, so that the entire non-woven fiber assembly portion A dry cleaning sheet, characterized in that a cleaning sheet is formed by providing an uneven shape over the surface, and the cleaning sheet is impregnated with a chemical containing an oil component before or after heating the cleaning sheet. A manufacturing method is also provided.
[0012]
In the present invention,heatShrinkable meshGEven when heated, it shrinks only and does not substantially form concavities and convexities. The fiber aggregate does not substantially shrink and is integrated with the mesh sheet, so that the fiber aggregate in the mesh is raised. Many irregularities are formed. In the present invention, the term “fiber assembly” refers to a material in which constituent fibers are entangled, and the term “fiber web” refers to a material before being entangled.
[0013]
[Action]
The dry cleaning sheet of the present invention forms a non-woven fiber aggregate in which the cleaning sheet is integrated in an entangled state with the mesh sheet as well as the entanglement between the fibers of the fiber web., ThatAfter that, since the heat-shrinkable net-like sheet is shrunk, the fibers constituting the non-woven fiber assembly are raised in a wavy pattern, increasing the degree of freedom of the fiber, and the sheet as a whole has a large number of irregularities. A shape is imparted to make it bulky, and it entangles from small dust to relatively large dust such as bread crumbs and hair, and reliably collects a wide range of dust. Moreover, it becomes the sheet | seat which a fiber waste is hard to come out and torn easily by entanglement integration with a net-like sheet.
[0014]
Furthermore, the present inventionDryFor cleaningSheetWith the amount of the drug carried in, there is little stickiness due to the drug while providing a sufficient cleaning effect.
[0015]
【Example】
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view showing a state in which a net-like sheet and a fiber web are overlapped at the initial production stage of a 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. FIG. 3 is a sectional view showing an example of a finished product of the cleaning sheet shown in FIG. 1, and FIG. 4 is a cleaning example shown in FIG. Sectional drawing of an example of the finished product of a sheet | seat, FIG. 5 is the schematic which shows the whole manufacturing apparatus used suitably when manufacturing the cleaning sheet | seat shown in FIG. 4, FIG. 6 is a top view of the net | network 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 tool with a handle.
[0016]
First, the dry cleaning sheet according to the first embodiment of the present invention shown in FIG. 3 will be described.
The dry cleaning sheet of the first embodiment isHeat shrinkableThe nonwoven fabric fiber assembly 12 formed by entanglement of fibers on one side of the mesh sheet 11 (13, 14) is also entangled with the mesh sheet 11 (13, 14) together with the entanglement between the constituent fibers. Integrated in a state, andBy thermally shrinking the mesh sheet 11, the fiber assembly 12 does not substantially shrink and the fiber sheet 12 does not shrink.The fiber assembly 12 is made to carry the chemical | medical agent containing an oil component on the cleaning sheet 10 in which many uneven | corrugated-shaped parts 12A and 12B are formed in the surface.
[0017]
The net-like sheet 11 (13, 14) is a broad concept including a perforated film having a large number of holes, for example, a net 11 as shown in FIG. 6 and a latent crimp formed with holes as shown in FIG. It includes a reticulated web 13 made of an expressed fiber assembly and a perforated film 14 having a large number of holes as shown in FIG.
[0018]
As the net 11 as the net sheet, as shown in FIG. 6, a net formed in a lattice shape as a whole is used. However, the shape of the holes formed in the net sheet 11 (13, 14) can be variously modified. For example, as shown in FIG. 8, the hole shape of the perforated film 14 may be a star shape as shown in (a), or a round shape as shown in (b). Further, as shown in (c), a combination of a round shape and a star shape may be used.
[0019]
Further, as shown in FIG. 3, the fiber assembly 12 has a non-joined portion with the mesh sheet 11 (13, 14) formed as a convex portion 12A, and a joined portion with the mesh sheet 11 (13, 14). It is formed as a concave portion 12B. And in the said fiber assembly 12, the uneven | corrugated surface with cushioning properties is formed of many convex-shaped parts 12A and the concave-shaped part 12B between these.
[0020]
The surface of the fiber assembly 12 is composed of entangled fibers, and fine dust and the like adhering to the surface to be cleaned is captured between these constituent fibers.
[0021]
Examples of the constituent fibers of the fiber assembly 12 include thermoplastic fibers such as polyesters, polyamides, and polyolefins, or composite fibers thereof, split fibers, or ultrafine fibers manufactured by the melt blown method, acetates, and the like. Any of synthetic fibers, recycled fibers such as cupra and rayon, and natural fibers such as cotton (cotton) may be used. The basis weight, fineness, fiber length, cross-sectional shape, degree of entanglement, and strength of the fiber aggregate constituting the non-woven fiber aggregate portion are determined according to the purpose of use by comprehensively considering processability, cost, etc. Is done.
[0022]
Further, the net 11 as the net-like sheet is heat shrinkable.AndBy using such a heat-shrinkable net, a large number of uneven portions can be formed on the surface of the fiber assembly by heat shrinkage by heat treatment of the heat-shrinkable net when the cleaning sheet 10 is manufactured. Examples of the heat-shrinkable net include polyolefins such as polyethylene, polypropylene, and polybutene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6, nylon 66, acrylonitrile, and vinyl. -Based, vinylidene-based, for example, polyvinyl chloride, polyvinylidene chloride, etc. or their modified products, alloys, nets composed of thermoplastic polymers such as mixtures thereof, depending on the uneven shape of the intended cleaning sheet A net that is woven or knitted using at least one of a warp or a weft with a filament that shrinks in a uniaxial or biaxial direction or a heat-shrinkable filament with the thermoplastic polymer is preferable. Select as appropriate
[0023]
Further, as the perforated film 14 as the reticulated sheet, a film which is made of the thermoplastic polymer and contracted in a uniaxial or biaxial direction by punching or the like can be used.
[0024]
The reticulated web 13 as the reticulated sheet includes, for example, monoolefin polymers and copolymers such as ethylene, propylene and butene, high density polyethylene, low density polyethylene, linear low density polyethylene, polypropylene, ethylene Propylene copolymers, ethylene / vinyl acetate copolymers, etc., ester polymers and copolymers such as polyethylene terephthalate and polybutylene terephthalate, vinyl polymers such as polyvinyl chloride and polyvinylidene chloride, vinylidene polymers and copolymers Polyamide polymers and copolymers such as nylon 6, nylon 66, heat-shrinkable fibers made of acrylonitrile polymers and copolymers, or mixtures thereof, or the potential for crimping by heating From crimped fibers and also from mixtures of these Made, that the fibers are integrated with entangled with each other is used.
[0025]
The net-like web 13 is formed by forming a fiber web into a net-like shape by a high-speed liquid flow or air flow, and the constituent fibers are entangled with each other to form a fiber aggregate sheet having a net-like pattern, or the constituent fibers are mutually connected. Fiber assembly sheet that has been perforated by punching with a specific hole diameter, hole pitch, hole pattern, etc., or constituent fibers made by other methods, intertwined and integrated into a sheet-like material Any reticulated sheet having a specific hole diameter, hole pitch, and hole pattern may be used.
[0026]
When the net 11 is used as the net-like sheet, the mesh, wire diameter, distance between wires, hole diameter, hole pitch, hole pattern, and the like are the concavo-convex portion 12A formed by the contraction force of the net 11 and the contraction of the net 11. Therefore, it is necessary to determine in consideration of the shape and degree of 12B 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 lines is preferably 2 mm to 30 mm, more preferably 4 mm to 20 mm.
[0027]
When the mesh web 13 or the perforated film 14 is used as the mesh sheet, the aperture diameter is preferably 4 mm to 40 mm, more preferably 8 mm to 20 mm, and the gap between the apertures is 2 mm to 20 mm. More preferably, it is 4 mm to 10 mm. In addition, when a thing other than the above is used as the mesh sheet, the hole diameter and the like can be selected according to the mesh sheet.
[0028]
Next, the second embodiment of the present invention shown in FIG.DryFor cleaningSheetWill be described.
Of this second embodimentDryFor cleaningSheetIs a fiber assembly 12 disposed on both surfaces of the mesh sheet 11 (13, 14), except that the fiber assembly 12 is disposed on both surfaces of the mesh sheet 11 (13, 14). The configuration is the same as in the first embodiment.
[0029]
In the case of the cleaning sheet in which the fiber aggregates are arranged on both sides of the net-like 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 assemblies on both sides of the sheet, for example, different types of constituent fibers, the product can be used properly on both sides of the sheet according to the purpose of use, or the product has a different texture on both sides of the sheet Is possible.
[0030]
Of the present inventionDryFor cleaningSheetIs a medicine on the fiber assembly 12 of the cleaning sheet 10.BearHold it. Such chemicals mainly include oil components intended for substantially dry dry cleaning.NoCan be mentioned.
[0031]
As said oil agent component, what contains at least 1 or more types among mineral oil, synthetic oil, silicone oil, and surfactant is preferable.
[0032]
Examples of the mineral oil include paraffinic hydrocarbons, naphthenic hydrocarbons, and aromatic hydrocarbons.
[0033]
As the synthetic oil, alkylbenzene oil, polyolefin oil, polyglycol oil or the like is used, and as the silicone oil, chain dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylhydrogenpolysiloxane or various modified silicones are used. .
[0034]
The surfactant is a cation-based mono long chain alkyltrimethylammonium salt having a C10-22 alkyl group or alkenyl group, dilong chain alkyldimethylammonium salt, monolong chain alkyldimethylbenzylammonium salt, etc. Nonionic systems include polyoxyethylene (6-35 mol) long chain alkyl or alkenyl (primary or secondary C₈~ C₂₂) Ether, polyoxyethylene (6-35 mol) alkyl (C₈~ C₁₈) Polyethylene glycol ether type such as phenyl ether, polyoxyethylene polyoxypropylene block copolymer, or polyhydric alcohol type such as glycerin fatty acid ester, sorbitan fatty acid ester, and alkyl glycoside. The surfactant preferably contains 5% by weight or less of water for effective cleaning.
[0035]
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 adsorbability of dust is poor, and if it is greater 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 causes damage to the cleaning surface. The surface tension (25 ° C.) is preferably 15 to 45 dyn / cm, particularly preferably 20 to 35 dyn / cm. This is because if it is less than 15 dyn / cm, the dust adsorptivity is poor, and if it is greater than 45 dyn / cm, it is difficult to spread evenly on the fibers constituting the nonwoven fabric.
[0036]
The supported amount of the oil component is based on the weight of the fiber assembly.1~ 20%ThereBy carrying at this ratio, the dust absorption ability and dust retention ability can be increased. This is because if the supported amount of the oil component is less than 0.1%, the increase in the dust absorption and dust retention ability due to the addition of the oil component is not sufficient, and if it exceeds 80%, the stickiness to the hand is significantly deteriorated. Of the present inventionDryFor cleaningSheetSince the surface of the fiber assembly is uneven, even if a relatively large amount of the oil component is carried on the fiber assembly, the oil component does not adhere to the hand when touched, and there is little stickiness Is.
[0037]
As described above, the oil component preferably includes at least one of mineral oil, synthetic oil, silicone oil, and surfactant, but the ratio and type thereof, the viscosity of the oil agent, the surface tension, It is determined appropriately according to the purpose of cleaning and the type of constituent fibers of the nonwoven fabric. Moreover, an antibacterial agent, a fungicide, a disinfectant, etc. can be included as needed.
[0038]
(Delete)
[0039]
(Delete)
[0040]
Further, the cleaning sheet according to the present invention is, HandleAttached to the attached tool and used as a cleaning articleIs a thing. With tool with handledo itThe form is not particularly limited, and examples include mop-like, handy mop-like, and peel-like ones. In particular, the cleaning part 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 denotes the cleaning part. In this way, by attaching the cleaning sheet to a tool with a handle, it is possible to clean a space that is difficult to reach such as a gap in the furniture or the ceiling with the cleaning sheet, and once collected fine dust and The performance of the cleaning sheet excellent in retaining bread crumbs, hair, cotton dust, etc. can be sufficiently exhibited.
[0041]
Next, according to the present inventionDryFor cleaningSheetA preferred embodiment of the production method will be described.
[0042]
As shown in FIG.1 and FIG.2, after laminating the fiber web 12 on one side or both sides of the net-like sheet 11 (13, 14) that heat-shrinks in one or two axial directions, the net-like sheet 11 (13, 14) is produced by water flow. The fibers of the fiber web 12 on one side and the fibers of the fiber web 12 on the other side, and the fibers of the fiber web 12 and the mesh sheet 11 (13, 14) are simultaneously entangled and integrated with each fiber. The web 12 is formed into a non-woven fiber assembly by entanglement. Thereafter, the obtained fiber aggregate is heat-shrinked simultaneously with drying or separately from the drying step, and the heat-shrinkable net-like sheet 11 (13, 14) is heat-shrinked, so that the constituent fibers of the nonwoven fiber aggregate are corrugated. As a whole, a concavo-convex shape is imparted.
[0043]
That is, as shown in FIG. 5, the fiber web 12 is continuously fed out from each of the card machines 21 </ b> A and 21 </ b> B that make the fiber web 12 through the feeding device 22. On the other hand, a roll 23 of the net-like sheet 11 (13, 14) is disposed between the card machines 21A and 21B, and the net-like sheet 11 (13, 14) is fed out from the feeding roll 25 of the roll 23.
[0044]
Then, the fiber web 12 is superimposed on the both sides of the mesh sheet 11 (13, 14) by the feeding roll 22 and is carried into the water needling device 26. Here, the fibers of the fiber web 12 are entangled with the mesh sheet by jet water flow, and the fiber webs 12 on both sides of the mesh sheet 11 (13, 14) are entangled with each other, and a sheet as shown in FIG. Make it.
[0045]
The entangled fiber assembly 12 and the reticulated sheet 11 (13, 14) are passed through the nip roll 27 and are carried into a heating device 28 for drying and heat shrinking, and heat-treated. By this heat treatment, the mesh sheet 11 (13, 14) is thermally shrunk, and as shown in FIG. 4 as an example, the nonwoven fabric fiber assembly 12 intertwined with the mesh sheet 11 (13, 14) has a convex portion 12A. And the concave portion 12B are formed. In the heating process by the heating device 28, the non-woven fiber assembly 12 and the heat-shrinkable mesh sheet 11 (13, 14) are processed at an appropriate temperature and time. These conditions differ depending on the heat-shrinkable net-like sheet 11 (13, 14), but may be set so as to have a shrinkage rate for obtaining a necessary uneven shape. However, in the continuous bonded sheet state, when shrinking in the flow direction of the sheet, the speed difference between the inlet side and the outlet side of the heat treatment part becomes an important point. That is, when the tensile force is greater than the shrinkage stress, it is desirable to match the front / rear speed ratio to a value close to the required shrinkage rate.
[0046]
The method of carrying the medicine on the cleaning sheet is not particularly limited, and for example, as shown in FIG. 5, the medicine is applied by a spray device 31 disposed between the nip roll 29 and the winder 30. The Depending on the type of the drug, it is appropriately determined whether the drug is applied before or after the heat treatment of the fiber assembly and the net-like sheet.
[0047]
When the cleaning sheet is in a continuous sheet state, it may be wound into a roll, or may be continuously cut into a required length, folded as necessary, and packaged.
[0048]
After drug applicationDrycleaningSheetIs wound around the winder 30 via the nip roll 29.
[0049]
In addition, when the fiber web 12 is laminated | stacked on the single side | surface of the net-like sheet 11 (13, 14) as shown in FIG. 1, the non-joining part with the net-like sheet 11 (13, 14) is formed as the convex-shaped part 12A. At this time, not only when the convex portion 12A is formed only on one side of the mesh sheet 11 (13, 14) as shown in FIG. 3, the convex portion 12A is randomly formed on both sides of the mesh sheet 11 (13, 14). In general, there is also a case where a concavo-convex surface is formed as a whole. Similarly, even when the fiber web 12 is laminated on both sides of the mesh sheet 11 (13, 14) as shown in FIG. 11 (13, 14), in the case where the constituent fibers between the fiber assemblies arranged on both sides are also intertwined at the non-bonded portion with the mesh sheet 11 (13, 14), the mesh sheet 11 ( 13 and 14) The convex portions 12A are integrally formed to form convex portions 12A on either side of the sheet, and the convex portions 12A are randomly formed on both surfaces of the mesh sheet 11 (13, 14). As a result, an uneven surface is formed as a whole, and these are all included in the examples of the present invention.
[0050]
In addition, when using a film having apertures as a mesh sheet, and when using a net with a large wire diameter or a small aperture, fiber assemblies existing on the front and back surfaces through the holes are strongly entangled with each other on the film or Since the lattice-like fibers are not easily entangled with the perforated film or the net, the concavo-convex shape is formed by raising the fibers on the film or the lattice, contrary to the above case. In particular, when a net is used as a net-like sheet and fiber webs are laminated and entangled on both sides thereof, the fibers of the fiber web are strongly entangled with the holes of the net interposed therebetween, so that a recess is easily formed.
[0051]
Furthermore, based on specific embodiments, the present inventionDryFor cleaningSheetWill be described.The reference product 1 is a wet cleaning sheet in which a cleaning agent-containing chemical is carried on the cleaning sheet, and the cleaning product before carrying the chemical in the reference product 1 is the same as in the working products 1 and 2. This is the same as the cleaning sheet before carrying the medicine containing the oil component.
(Product 1)
Polyester fiber 1.5 denier, 51mm, basis weight 10g / m with ordinary card²  Of fibrous web and three layers (30 g / m) of the fibrous web.²  ) And a biaxially contracted net of polypropylene (5 mesh / wire diameter 0.2 mm) as a net-like sheet is laminated on the upper and lower layers of the intermediate layer, and then entangled by water needling. Combined. At that time, water needling is performed at a water pressure of 40 kg / cm.²  The nozzle pitch was 1.6 mm and the speed was 5 m / min. Thereafter, the net was shrunk simultaneously with drying by heat treatment with hot air of 130 ° C. for 50 seconds, and then 95% liquid paraffin and nonionic surfactant [polyoxyethylene (average added mole number 3.3) by spraying. ) Alkyl (C₁₂~ C₁₃) Ether] A 5% chemical (viscosity 125 cps, surface tension 30 dyn / cm) is applied at a ratio of 5% to the fiber weight (weight of the fiber assembly), and the surface has an area shrinkage of 10%. Example product 1 having
[0052]
(Product 2)
Polyester fiber 1.5 denier, 51 mm of 6 parts and rayon fiber 3 denier 51 mm of 4 parts blended with a regular card, basis weight 10 g / m²  The fiber web is formed into five layers (basis weight 50 g / m).²  ) (A mesh sheet), a polypropylene biaxially shrinkable net (5 mesh / 0.2 mm diameter) is laminated on the lower layer, and the fiber web is laminated on the upper layer, and then entangled by water needling. It was. At that time, water needling is performed at a water pressure of 40 kg / cm.²  The nozzle pitch was 1.6 mm and the speed was 5 m / min. After drying this fiber assembly, silicone (Toray Silicone SM5571) was applied by gravure coating at a ratio of 10% with respect to the fiber weight (weight of the fiber assembly). Thereafter, heat treatment was performed with hot air at 130 ° C. for 60 seconds to shrink the net and obtain a product 2 having irregularities on the surface with an area shrinkage rate of 25%.
[0053]
(Reference product 1)
Polyester fiber 1.5 denier, 51 mm of 5 parts and rayon fiber 1.5 denier, 51 mm of 5 parts kneaded with a conventional card, basis weight 10 g / m²  The fiber web is formed into two layers (basis weight 20 g / m).²  ) And a biaxially contracted net of polypropylene (5 mesh / wire diameter 0.2 mm) as a net-like sheet is laminated on the upper and lower layers of the intermediate layer, and then entangled by water needling. Combined. At that time, water needling is performed at a water pressure of 40 kg / cm.²  The nozzle pitch was 1.6 mm and the speed was 5 m / min. Thereafter, the net was shrunk simultaneously with drying by heat treatment with hot air at 145 ° C. for 30 seconds, and then the nonionic surfactant [polyoxyethylene (average added mole number 5) alkyl (C₁₂~ C₁₃) Ether] 0.5%, ethanol 5% and propylene glycol monomethyl etherTeA drug composed of an aqueous solution containing 5% is applied at a rate of 120% with respect to the fiber weight (weight of the fiber assembly), and the surface has an unevenness on the surface with an area shrinkage of 15%.Reference product 1Got.
[0054]
(Comparative product 1)
In the product 1, except for the shrinkage step, the surface on which no irregularities were formed was used as the comparative product 1. The comparative product 1 was prepared in the same manner as the product 1 in other respects.
[0055]
(Comparative product 2)
In the product 1, the product to which no drug was applied was designated as comparative product 2. In other respects, Comparative Product 2 was prepared in the same manner as Example Product 1.
[0056]
(Comparative product 3)
Polyester fiber 1.5 denier, 51mm, basis weight 10g / m with ordinary card²  Of fiber web and seven layers (70 g / m) of the fiber web.²  ) (Not shown) and entangled by water needling. At that time, water needling is performed at a water pressure of 40 kg / cm.²  The nozzle pitch was 1.6 mm and the speed was 5 m / min. Then, the chemical | medical agent similar to the implementation product 1 was provided by the spray, and it was set as the comparison product 3.
[0057]
(Comparative product 4)
Polyester fiber 1.5 denier, 51mm, basis weight 10g / m with ordinary card²  The fiber web is formed into five layers (basis weight 50 g / m).²  ) (Not shown) and entangled by water needling. At that time, water needling is performed at a water pressure of 40 kg / cm.²  The nozzle pitch was 600 nozzles / m and the speed was 5 m / min. A fiber catalyzed thread (made by Ushida Co., Ltd.), which has been applied with the same chemical agent as the product 1 by spraying, is sewn with a sewing machine at four locations in the flow direction at a stretch rate of 125%. A pleated sheet was produced, and this was designated as comparative product 4.
[0058]
(Comparative product 5)
In Comparative Product 3, a product using PP (polypropylene) crimped fiber 1.5 denier and 51 mm as a raw material of the fiber web was referred to as Comparative Product 5.
[0059]
(Comparative product 6)
A heat-shrinkable PP (polypropylene) film having no apertures on one side of the comparative product 3 is partially heat-sealed by ultrasonic waves, and then heat-treated with hot air at 110 ° C. for 30 seconds, thereby reducing the area shrinkage rate. Comparative product 6 having irregularities on the surface of 10% was obtained.
[0060]
Mentioned aboveeachImplemented product, Reference product 1 and eachComparisonArticleEach was evaluated as follows. The results are shown in [Table 1] below.
[0061]
1. Dust collecting ability
7 g of test dust (JIS Z8901) with a size of 30 x 30 cm, close to the composition of soil and sand dust, is evenly spread over 1 g, and each of the above products is applied to a sponge of 7 x 11 cm in size., Reference product 1 and eachComparisonGoodsPaste and fix, 10 reciprocations above each productReference product 1as well aseachThe amount of dust adsorbed on the comparative product was taken as the amount of adsorption.
[0062]
In addition, each product affixed to the sponge, Reference product 1 and eachAfter dropping the sponge 10 times from a height of 30 cm with the surface of the comparative product facing down, excess dust was removed,, Reference product 1 and eachThe amount of dust remaining in the comparative product was evaluated as the retained amount.
[0063]
2. Hair collection ability
Sprinkle 10cm of human hair so that it does not overlap closely, and apply each of the above products to a 7x11cm sponge., Reference product 1 and eachA comparative product attached and fixed was reciprocated three times, and sensory evaluation was performed on the ease of removing and removing the hair.
[0064]
The criteria for sensory evaluation are as follows.
A: 10 to 8 hairs are reliably removed, and it is difficult to remove the removed hair.
○: 10 to 8 hairs are surely removed, but the removed hair may fall.
(Triangle | delta): Although 7-5 hairs are taken, the taken-off hair is easy to drop.
X: 5 hairs or more are not taken.
[0065]
3. Breadcrumb collection ability
1 g of bread crumbs (Nisshin Flour Milling Co., Ltd. soft bread crumbs) is sprayed over a 30 x 30 cm area, and each of the above products is applied to a 7 x 11 cm sponge., Reference product 1 and eachA comparative product was affixed and fixed, and the sample was reciprocated three times, and sensory evaluation was performed regarding the ease of removing breadcrumbs and the difficulty of dropping.
[0066]
The criteria for sensory evaluation are as follows.
A: It is difficult to reliably remove almost all of the bread crumbs and to remove them.
○: Most of the bread crumbs are removed, but the bread crumbs taken may fall.
Δ: Some breadcrumbs are removed, but the removed breadcrumbs are easy to drop.
×: Almost no breadcrumbs are removed.
[0067]
4). Effective use of non-woven fabric
7 g of test dust (JIS Z8901) with a size of 30 x 30 cm, close to the composition of soil and sand dust, is evenly spread over 1 g, and each of the above products is applied to a sponge of 7 x 11 cm in size., Reference product 1 and eachAffix the comparison products and fix them 10 times for cleaningSheetThe degree of soiling of the surface was visually evaluated.
[0068]
The criteria for visual evaluation are as follows.
○: For cleaningSheetMost of the area is dirty with dust.
Δ: For cleaningSheetAlthough not all surfaces, the area of 50% or more is dirty.
×: For cleaningSheetLess than 50% of the area is dirty.
[0069]
5). Stickiness
Each of the above products, Reference product 1 and eachA sensory evaluation of the stickiness when the comparative product was touched with the hand was performed.
[0070]
The criteria for sensory evaluation are as follows.
○: Almost no stickiness.
Δ: Feels somewhat sticky.
X: Feels very sticky.
[0071]
[Table 1]

[0072]
As is clear from [Table 1], this productAnd reference productsFor cleaning bySheetAccording to the results, good results were obtained in all of the evaluation items of dust adsorption amount, dust retention amount, hair collection ability, bread crumb collection ability, effective use of nonwoven fabric, and stickiness. . On the other hand, each comparative product is inferior in terms of the amount of dust adsorbed and the amount of dust retained, and cannot satisfy other evaluations even if it is good in some evaluations.
[0073]
That is, according to the present embodiment, the dust absorption and dust retention properties are excellent, and the large dust collection property such as hair and bread crumbs is excellent, and there is almost no stickiness to the hand.
[0074]
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
[0075]
For example, the method of carrying the medicine on the cleaning sheet may be such that the cleaning sheet is immersed in the medicine.
[0076]
【The invention's effect】
Of the present inventionDryFor cleaningSheetAccording to the above, not only is it excellent in the ability to adsorb and retain fine dirt such as fine dust, but also cotton produced by capturing large dirt such as bread crumbs using the unevenness of the nonwoven fabric and the entanglement effect of the nonwoven fabric with a high degree of freedom. It has excellent ability to collect dust, lint, hair, etc., and has little stickiness of hand because it is difficult to remove or tear fiber waste during cleaning.
[0077]
Furthermore, the present inventionDryFor cleaningSheetAccording to the manufacturing method ofDryFor cleaningSheetCan be suitably manufactured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which a net-like sheet and a fiber web are overlapped at the initial stage of production of a cleaning sheet used in the first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state in which a net-like sheet and a fiber web are overlapped at the initial stage of production of a cleaning sheet used in the second embodiment of the present invention.
FIG. 3 is a cross-sectional view of an example of a completed cleaning sheet shown in FIG. 1;
4 is a cross-sectional view of an example of a completed cleaning sheet shown in FIG. 2. FIG.
FIG. 5 is a schematic view showing an entire manufacturing apparatus suitably used when manufacturing the cleaning sheet shown in FIG. 4;
FIG. 6 is a plan view of a net used as a mesh sheet.
FIG. 7 is a plan view of a mesh web used as a mesh 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 a cleaning sheet is attached to a tool with a handle.
[Explanation of symbols]
10 Cleaning sheet
11 (13, 14) mesh sheet
12 Fiber assembly (or fiber web)
12A Convex part
12B concave part

Claims (4)

On one or both sides of the heat-shrinkable mesh sheet, a non-woven fiber assembly formed by entanglement of fibers of the fiber web is integrated with the mesh sheet together with the entanglement between the constituent fibers. The fiber aggregates are not substantially contracted by heat shrinking the mesh sheet, and the fibers of the fiber aggregates are arranged in a wavy pattern on the surface of the fiber aggregate. a cleaning sheet in which unevenness of is formed, will be allowed to support agent comprising an oil component, carrying amount of the oil agent component is 1-20% by weight of the fiber aggregate, with handle A dry cleaning sheet that is attached to a tool for use. The net sheet is a heat-shrinkable thermoplastic resin net obtained by stretching, or a heat-shrinkable net woven or knitted by a stretched thermoplastic resin filament. Item 2. A dry cleaning sheet according to Item 1. The dry cleaning sheet according to claim 1 or 2, wherein the oil component is mineral oil, synthetic oil or silicone oil, and the viscosity (25 ° C) of the oil component is 5 to 1000 cps. Non-woven fiber aggregates formed by entanglement of fibers of the fiber web are integrated on one or both sides of the mesh sheet in an entangled state with the mesh sheet together with the entanglement between the constituent fibers. The fiber assembly has a cleaning sheet in which the fibers of the fiber assembly are raised and arranged in a wavy shape and a large number of irregularities are formed on the surface thereof, and a drug containing an oil component is supported on the cleaning sheet, A method for producing a dry cleaning sheet in which the supported amount of the oil component is 1 to 20% with respect to the weight of the fiber assembly , after the fiber web is laminated on one side or both sides of the heat-shrinkable mesh sheet The fiber web constituent fibers and the mesh sheet or the fiber web constituent fibers are entangled with each other, and after the fiber web becomes a nonwoven fiber aggregate and is integrated with the mesh sheet, these Heated and on By heat-shrinking the net-like sheet, a non-woven fiber assembly part is provided with an uneven shape to create a cleaning sheet, and the agent containing the oil component is added before or after heating the cleaning sheet. A method for producing a dry cleaning sheet, wherein the cleaning sheet is impregnated.

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