WO2014141360A1 - Cleaning sheet and production method therefor - Google Patents

Cleaning sheet and production method therefor Download PDF

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Publication number
WO2014141360A1
WO2014141360A1 PCT/JP2013/056604 JP2013056604W WO2014141360A1 WO 2014141360 A1 WO2014141360 A1 WO 2014141360A1 JP 2013056604 W JP2013056604 W JP 2013056604W WO 2014141360 A1 WO2014141360 A1 WO 2014141360A1
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WO
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Prior art keywords
nonwoven fabric
sheet
cleaning sheet
cleaning
sheet according
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PCT/JP2013/056604
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French (fr)
Japanese (ja)
Inventor
山田　菊夫
Original Assignee
Yamada Kikuo
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Publication date
Application filed by Yamada Kikuo filed Critical Yamada Kikuo
Priority to PCT/JP2013/056604 priority Critical patent/WO2014141360A1/en
Priority to JP2015505103A priority patent/JP6091600B2/en
Publication of WO2014141360A1 publication Critical patent/WO2014141360A1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges

Definitions

  • the present invention relates to an improvement of a sheet that can be used for various cleanings in a dry state or a wet state, and a manufacturing method that makes it possible to reasonably manufacture such a sheet from an existing nonwoven fabric.
  • Non-woven fabric is widely used as a disposable cleaning sheet. After all, non-woven fabrics have a huge amount of fiber layers, and the resulting dust or dust trapping capability, that is, the cleaning capability is potentially high, while the productivity is high and the cost is low. Because it is available.
  • the non-woven fabric is used as it is as a cleaning sheet, a very good cleaning ability is not always obtained.
  • the nonwoven fabric has numerous fibers arranged very densely, and a large number of fiber layers are overlapped. Therefore, the unprocessed nonwoven fabric does not have a sufficient gap for allowing dust or dust to enter between the fibers, and dust or dust can be wiped off almost only on the surface.
  • Patent Document 1 if the existing nonwoven fabric is provided with irregularities, the improvement of the cleaning ability can be expected. Moreover, as shown in Patent Document 2, the improvement of the cleaning ability can be expected even if the nonwoven fabric has a structure in which an elastic fiber layer is provided outside the non-elastic fiber layer.
  • patent document 1 can be evaluated in the point which enables the process from a commercially available nonwoven fabric, when this is used for cleaning, it has not fully demonstrated the said cleaning capability.
  • patent document 2 is not obtained by processing a commercially available nonwoven fabric, and is unsuitable for using for the disposable cleaning sheet
  • the present invention aims to provide a cleaning sheet that can be produced using an existing nonwoven fabric and has a high cleaning ability.
  • a second object of the present invention is to make it possible to reasonably manufacture a cleaning sheet having a high cleaning ability using an existing nonwoven fabric as a starting material.
  • the cleaning sheet has a portion in which thick portions of three layers formed by crushing a three-dimensional waveform in a flat shape are arranged in parallel.
  • the nonwoven fabric is provided with a partial weld that maintains the flat state and a raised portion raised by spraying a pressurized fluid.
  • Such a cleaning sheet has a thick portion having a bowl shape by the three-layered portion and a thin portion having a groove shape located between the thick portions.
  • the thick part has a function of scraping off dust and the like. Since the welding is performed partially, at the time of the wiping, a difference occurs in the deformation amount of the sheet between the portion where the welding is performed and the portion where the welding is not performed. If the amount of deformation of the sheet during wiping is uniform everywhere on the sheet, dust or debris of a certain size, i.e. dust, is scraped well by the sheet, but certain size of dust is scraped off very well.
  • the cleaning sheet is provided with the non-raised portions and the raised portions alternately. Moreover, it is one of the preferable aspects of this invention that the cleaning sheet is provided with the raised portions in a scattered manner.
  • the cleaning sheet has a linear, broken line, or dotted line-shaped weld mark applied along a virtual mesh composed of a virtual first line segment and a virtual second line segment that intersects the first line segment. It is one of the preferred embodiments of the present invention to provide it.
  • one of the preferable aspects of this invention is the cleaning sheet (laminated sheet) comprised by laminating
  • seat for cleaning is made to at least one part of this nonwoven fabric, conveying a long nonwoven fabric along the length direction.
  • this manufacturing method it is one of the preferable aspects of the invention regarding this manufacturing method to perform the second step and the third step at the same time. Moreover, if the 3rd process is implemented in the state which overlap
  • the cleaning sheet according to the present invention has a high cleaning ability and can be produced using an existing non-woven fabric.
  • the cleaning sheet according to the first aspect can be reasonably manufactured using an existing nonwoven fabric as a starting material.
  • FIG. 1 is a cross-sectional configuration diagram of a cleaning sheet according to an embodiment of the present invention
  • FIG. 2 is a perspective configuration diagram showing a first example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG.
  • FIG. 3 is a perspective configuration diagram showing a second example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG.
  • FIG. 4 is a perspective configuration diagram showing a third example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG.
  • FIG. 5 is a perspective configuration diagram showing a fourth example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG.
  • FIG. 1 is a cross-sectional configuration diagram of a cleaning sheet according to an embodiment of the present invention
  • FIG. 2 is a perspective configuration diagram showing a first example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration
  • FIG. 6 is a perspective configuration diagram showing a fifth example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG.
  • FIG. 7 is a side view showing the main configuration of an apparatus for carrying out the sheet manufacturing method having the configuration of FIG.
  • FIG. 8 is a plan view showing the main configuration of an apparatus for carrying out the method for manufacturing a sheet having the configuration of FIG.
  • FIG. 9 is a cross-sectional configuration diagram showing the main parts of a pair of forming rollers for performing the first step of the manufacturing method
  • FIG. 10 is a cross-sectional configuration diagram of the nonwoven fabric that has undergone the second step of the manufacturing method
  • FIG. 11 is a perspective view of a main part of an example of a pressing roller that performs the second step and the third step of the manufacturing method
  • FIG. 12 is a side view showing the main configuration of an apparatus for carrying out the method for manufacturing a laminated sheet shown in FIGS.
  • the cleaning sheet S according to this embodiment can be used for various cleanings in a dry state or in a wet state.
  • the sheet S has a structure capable of effectively capturing and removing dust, that is, dust or dust by wiping (wiping) using the sheet S. That is, the sheet S functions as a cleaning wiping body.
  • the manufacturing method according to this embodiment enables such a sheet S to be reasonably manufactured from such a nonwoven fabric using an existing nonwoven fabric as a starting material.
  • the sheet S is used for cleaning as it is, or is used for cleaning using a cleaning tool in combination with a part of a cleaning tool main body such as a mop (not shown), for example, a mop head. .
  • a cleaning tool main body such as a mop (not shown), for example, a mop head.
  • a sheet S is provided as a one-time-use wiping body, and when combined with a cleaning tool as described above, the sheet S is appropriately replaced according to the frequency of use of the cleaning tool.
  • the sheet S is provided by being pre-moistened with water or various aqueous solutions. In this case, the sheet S is provided in a sealed container.
  • Such a sheet S is three-dimensionalized so that at least a part of the cross-sectional shape thereof is a wave shape, and then flattened so as to have three overlapping portions 1 in parallel and subjected to partial welding.
  • the flat state is maintained, and the non-raised portion 2 and the raised portion 3 raised by spraying the pressurized fluid A are used to form the nonwoven fabric M.
  • FIG. 1 shows the cross-sectional structure of the sheet S in the thickness direction.
  • the three-layered portion 1 is in close contact with the upper and lower portions at the position where the welding is performed.
  • the sheet S is formed between the opposing sides of the sheet S by the three-layered portion 1.
  • a thick portion 4 having a bowl shape and a thin portion 5 having a groove shape located between the thick portions 4 are provided.
  • the thick portion 4 has a function of scraping dust and the like. Since the welding is performed partially, a difference occurs in the deformation amount of the sheet S between the portion where the welding is performed and the portion where the welding is not performed.
  • the cleaning sheet S shown in FIG. 1 is bonded to the front and back of the base sheet Sa to form a cleaning sheet.
  • the cleaning sheet shown in FIGS. 2 to 6 is referred to as a laminated sheet S ′.
  • the cleaning sheet S is composed of two sheets S and S and one base sheet Sa. Yes.
  • the base sheet Sa is wider than the sheet S
  • the left edge of the base sheet Sa is located outward from the left edge of the sheet S
  • the right edge of the base sheet Sa is the sheet S. It is located outside the right edge of.
  • edge part 6 which is not overlying three sheets is formed in the right end part and left end part of the sheet
  • edge part 6 is utilized as a clamping location etc. when combining the sheet
  • the plurality of thick portions 4, 4... are formed in parallel with the thin portions 5 interposed between the adjacent thick portions 4, 4.
  • the laminated sheet S ′ has an appropriate thickness that is convenient for rubbing.
  • the laminated sheet S ′ can be composed of two sheets, a sheet S and a base sheet Sa.
  • the base sheet Sa constituting the laminated sheet S ′ is made of a material that can be welded to the sheet S, and is integrated with the sheet S by the welding applied to the sheet S. It has become so.
  • the sheet S is composed of a nonwoven fabric M composed of synthetic fibers or a nonwoven fabric M obtained by mixing synthetic fibers and fibers other than synthetic fibers
  • the base sheet Sa is also composed of nonwoven fabric M composed of synthetic fibers or synthetic fibers. It is comprised from the nonwoven fabric M formed by mixing fibers and fibers other than synthetic fibers.
  • the welding is performed so that the welding mark 7 has a mesh shape depending on the shape of the peripheral surface of the pressing roller 200 described later.
  • the sheet S constituting the laminated sheet S ′ shown in FIGS. 2 to 6 includes the non-raised portions 2 and the raised portions 3 alternately.
  • the sheet S constituting the laminated sheet S ′ shown in FIG. 6 includes the raised portions 3 in a scattered manner. More specifically, in the laminated sheet S ′ shown in FIG. 2, the raised portion 3 has a strip shape that continues in a direction orthogonal to the continuous direction of the thick portion 4. In the laminated sheet S ′ shown in FIG. 3, the raised portion 3 has a strip shape that continues in the direction along the continuous direction of the thick portion 4. In the laminated sheet S ′ shown in FIGS. 4 and 5, the raised portion 3 has a strip shape that is not orthogonal to the continuous direction of the thick portion 4 but continues in the direction crossing the continuous direction.
  • the cleaning sheet S having the above structure is transported in the process of transporting the existing long nonwoven fabric M along its length direction.
  • the cleaning sheet S is continuously generated from the nonwoven fabric M by sequentially processing.
  • Such a manufacturing method includes the following first to fourth steps. However, there may be other steps other than the first step to the fourth step prior to the first step, and there may be other steps after the fourth step. There may be other steps between the second step, between the second step and the third step, and between the third step and the fourth step.
  • the long nonwoven fabric M is typically wound into a roll shape, and is sequentially pulled out from the end of the winding and conveyed.
  • a typical spunlace nonwoven fabric M can be typically used as the nonwoven fabric M.
  • the nonwoven fabric M to be transported is provided with a bent portion Ma (see FIG. 9) having a cross-sectional shape in a direction perpendicular to the transport direction x of the nonwoven fabric M as a waveform. It is the process of forming continuously along.
  • the first step is performed by a pair of forming rollers 100 and 100.
  • the pair of forming rollers 100, 100 are rotated so that the nonwoven fabric M is sandwiched between them, and the nonwoven fabric M is continuously drawn from the upstream side of conveyance between the pair of molding rollers 100, 100 and continuously downstream of the conveyance side. It is designed to send out.
  • Each forming roller 100 is provided with a plurality of circumferential grooves 101 around the rotation axis on the circumferential surface portion with a space between the circumferential grooves 101 adjacent to each other in the rotation axis direction 102. Circumferential teeth 103 are formed between adjacent circumferential grooves 101, respectively.
  • the circumferential teeth 103 of the other molding roller 100 enter the respective circumferential grooves 101 of the one molding roller 100, and each revolution of the one molding roller 100.
  • the teeth 103 enter the circular groove 101 of the other forming roller 100.
  • the circular teeth 103 enter the circular groove 101 so that the nonwoven fabric M is loosely sandwiched between them. Thereby, the nonwoven fabric M which passed through the 1st process is sent out toward the 2nd process in the state which the said bending part Ma was formed in the location except the right-and-left both sides edge part, and the width
  • the non-woven fabric M which is three-dimensionalized with the bent portion Ma applied in the first step, has a three-layered position Ma that becomes the three-layered position 1 of the sheet S in parallel. It is a process of flattening.
  • the third step is a step of performing partial welding on the nonwoven fabric M so that the flat state of the nonwoven fabric M that has been flattened by the second step is maintained.
  • the second process and the third process are rotated while being sandwiched between the non-woven fabric M conveyed through the first process and the cradle 300 to the fourth process. It is carried out at the same time by the pressure roller 200 that sends it out.
  • the cradle 300 is constituted by an ultrasonic transducer. Unlike the illustrated example, the cradle 300 may also be formed in a roller shape and vibrated ultrasonically. As shown in FIGS. 8 and 11, the pressing roller 200 has a mesh pattern 201 on its peripheral surface.
  • the flattened non-woven fabric M is provided with a linear welding mark 7 applied along a virtual mesh composed of a virtual first line segment and a virtual second line segment intersecting the first line segment. It has become so.
  • the line portion constituting the mesh pattern 201 slightly protrudes from the remaining peripheral surface of the pressing roller 200.
  • the cloth surfaces of the crushed and overlapped nonwoven fabric M are welded by heat generated by ultrasonic vibration applied from the cradle 300. Only the portion of the pattern 201 formed on the peripheral surface of the pressure roller 200 is welded. Thereby, this flat state of the nonwoven fabric M which became the flat state is maintained.
  • the nonwoven fabric M flattened by the pattern 201 of the pressing roller 200 shown in FIGS. 8 and 11 is attached to the sheet S constituting the sheet S and the laminated sheet S ′ generated from now on.
  • a network-like welding mark is formed to be the welding mark 7 to be formed.
  • the pattern 201 of the pressing roller 200 is not limited to the mesh shape as long as the flattened nonwoven fabric M is partially welded to maintain the flat state.
  • the welding mark 7 can be formed in a broken line shape or a dotted line shape.
  • the fourth step is a step of forming the raised portions 3 by spraying a pressurized fluid A such as pressurized air or pressurized steam onto the nonwoven fabric M that has undergone the third step.
  • a pressurized fluid A such as pressurized air or pressurized steam
  • the nonwoven fabric M of this spraying part is extended and weakened by spraying the pressurized air as the pressurized fluid A with the air nozzle 400 on the surface of the nonwoven fabric M conveyed through the said 3rd process.
  • the sprayed portion is the raised portion 3 of the sheet S generated from the nonwoven fabric M.
  • the raised portions 3 are formed in the range where the three-layered place Ma formed in the second step is formed, and this range includes the non-raised portions 2 and the raised portions 3 alternately. ing.
  • the air nozzle 400 typically uses an air nozzle whose operation is controlled by a control device (not shown).
  • the raised portions 3 By moving the air nozzle 400 itself back and forth or / and right and left with respect to the conveyance direction x of the nonwoven fabric M under predetermined control, the raised portions 3 as shown in FIGS.
  • the sheet S can be formed. Further, if the pressurized fluid A is intermittently ejected from the air nozzle 400, the raised portions 3 can be formed in a scattered manner on the sheet S as shown in FIG.
  • the cleaning sheet S shown in FIG. 1 it becomes possible to produce the cleaning sheet S shown in FIG. 1 from the existing nonwoven fabric M reasonably and inexpensively. That is, since the fibers are loosened in the raised portions 3 and the gaps between the fiber ends are opened, fine dust can be taken in. In the non-raised portions 2, the fibers are intertwined with each other, so the fibers are weak. It is possible to scrape even dust of a size that cannot be scraped off by the raised portion. That is, according to the manufacturing method concerning this embodiment, it becomes possible to manufacture the cleaning sheet S having such an excellent function by additionally processing an existing general nonwoven fabric M at a low cost. Typically, after the fourth step, the sheet S in a long state is cut along a direction orthogonal to the conveyance direction x and cut into sheets S having a desired size.
  • a laminated sheet S composed of one sheet S and one base sheet Sa. '(Not shown) can be continuously generated.
  • FIG. 12 schematically shows a main part of a manufacturing apparatus that performs the cleaning method for the laminated sheet S ′.
  • the base sheet Sa is wound into a roll shape, and is sequentially pulled out from the end of the winding and conveyed.
  • a general-purpose non-woven fabric M such as a thermal bond non-woven fabric M that is stronger and less expensive than the non-woven fabric M constituting the sheet S.
  • the non-woven fabric M which becomes one sheet S constituting the laminated sheet S ′, is conveyed on the upper side of the base sheet Sa thus conveyed, and the other sheet constituting the laminated sheet S ′ on the lower side of the base sheet Sa.
  • the other nonwoven fabric M which becomes S is conveyed.
  • the three parties are in the state of sandwiching the base sheet Sa between the one nonwoven fabric M and the other nonwoven fabric M. It is fed between a pair of pressure rollers 200 and 200 for performing the process and integrated.
  • One of the pair of pressing rollers 200, 200 is configured to be ultrasonically vibrated.
  • seat S is formed by the air nozzle 400 which implements a 4th process to the one nonwoven fabric M and the other nonwoven fabric M, respectively downstream of this pair of press rollers 200,200.

Abstract

Provided is a cleaning sheet (S) that has a section in which three-layered thick sections (1) that are produced by squashing a three-dimensional wave shape into a flat shape are arranged in parallel, and that comprises a nonwoven fabric that is provided with a localized adhesive that maintains the flat shape and raised fiber sections (3) that are made to rise by spraying with a pressurized fluid.

Description

清掃用シート及びその製造方法Cleaning sheet and manufacturing method thereof
　この発明は、乾いた状態で、あるいは、湿らせた状態で様々な清掃に利用可能なシートの改良、及び、かかるシートを既存の不織布から合理的に製造可能とする製造方法に関する。 The present invention relates to an improvement of a sheet that can be used for various cleanings in a dry state or a wet state, and a manufacturing method that makes it possible to reasonably manufacture such a sheet from an existing nonwoven fabric.
　使い捨ての清掃用シートとして、不織布が広く一般に用いられている。なんとなれば、不織布は、膨大な量の繊維の層を有しており、これに起因した塵埃ないし塵芥捕捉の能力、すなわち、清掃能力を潜在的に高く持つ一方で、生産性が良く安価に入手可能だからである。 Non-woven fabric is widely used as a disposable cleaning sheet. After all, non-woven fabrics have a huge amount of fiber layers, and the resulting dust or dust trapping capability, that is, the cleaning capability is potentially high, while the productivity is high and the cost is low. Because it is available.
　しかし現実には、不織布をそのまま清掃用シートとして用いても、さほど優れた清掃能力が得られる訳ではない。不織布は、必要とされる強度を確保するために、無数の繊維が非常に密に配置されているうえに、沢山の繊維層が押しつぶされた状態に重なりあっている。そのため、無加工の不織布には、繊維どうしの間に塵埃ないし塵芥が入り込めるだけの十分な隙間がなく、ほとんど表面だけでしか塵埃ないし塵芥を拭き取ることができない。 However, in reality, even if the non-woven fabric is used as it is as a cleaning sheet, a very good cleaning ability is not always obtained. In order to ensure the required strength, the nonwoven fabric has numerous fibers arranged very densely, and a large number of fiber layers are overlapped. Therefore, the unprocessed nonwoven fabric does not have a sufficient gap for allowing dust or dust to enter between the fibers, and dust or dust can be wiped off almost only on the surface.
　特許文献１に示されるように、既存の不織布に凹凸を備えさせるようにすれば前記清掃能力の向上が期待できる。また、特許文献２に示されるように、不織布を非弾性繊維層の外側に弾性繊維層を備えた構造のものとしても前記清掃能力の向上が期待できる。 As shown in Patent Document 1, if the existing nonwoven fabric is provided with irregularities, the improvement of the cleaning ability can be expected. Moreover, as shown in Patent Document 2, the improvement of the cleaning ability can be expected even if the nonwoven fabric has a structure in which an elastic fiber layer is provided outside the non-elastic fiber layer.
特開２０１１－２２６０１０号公報JP 2011-2261010 A 特開２００８－７９２４号公報JP 2008-7924 A
　特許文献１に示されるものは、市販の不織布からの加工を可能とする点で評価できるが、これを清掃に用いた場合に前記清掃能力を充分に発揮しうるものとはなっていない。また、特許文献２に示されるものは、市販の不織布を加工して得られるものではなく、低廉供給性が要求される使い捨ての清掃用シートに用いるのには不向きである。 Although what is shown by patent document 1 can be evaluated in the point which enables the process from a commercially available nonwoven fabric, when this is used for cleaning, it has not fully demonstrated the said cleaning capability. Moreover, what is shown by patent document 2 is not obtained by processing a commercially available nonwoven fabric, and is unsuitable for using for the disposable cleaning sheet | seat in which low-cost supply property is requested | required.
 そこで、この発明は、第一に、既存の不織布を利用して生成可能で且つ清掃能力の高い清掃用シートの提供を目的としている。また、この発明は、第二に、清掃能力の高い清掃用シートを既存の不織布を出発原料として合理的に製造可能とすることを目的としている。 Therefore, firstly, the present invention aims to provide a cleaning sheet that can be produced using an existing nonwoven fabric and has a high cleaning ability. A second object of the present invention is to make it possible to reasonably manufacture a cleaning sheet having a high cleaning ability using an existing nonwoven fabric as a starting material.
　前記第一の目的を達成するために、この発明にあっては、清掃用シートを、立体的な波形を扁平状に押しつぶしてできる三枚重ねの厚い部分を並列的に配した箇所を有すると共に、前記扁平状態を維持する部分的な溶着と、加圧流体の吹き付けによって起毛された起毛部分とを備えた不織布よりなるものとした。 In order to achieve the first object, in the present invention, the cleaning sheet has a portion in which thick portions of three layers formed by crushing a three-dimensional waveform in a flat shape are arranged in parallel. The nonwoven fabric is provided with a partial weld that maintains the flat state and a raised portion raised by spraying a pressurized fluid.
　かかる清掃用シートは前記三枚重ねの箇所によって畝状をなす厚い部分と、この厚い部分間に位置する溝状をなす薄い部分とを有する。かかるシートを用いた擦拭時には、前記厚い部分が塵埃などを掻きとる機能を持つ。前記溶着は部分的に施されていることから、前記擦拭時には、溶着の施されている部分と施されていない部分とでシートの変形量に差が生じる。擦拭時のシートの変形量がシートのどの箇所でも一様であると、ある特定の大きさの塵埃ないし塵芥、すなわち、ごみはシートによってよく掻きとれるが、ある大きさのごみはあまりよく掻きとれないという現象が生じるが、かかるシートによれば前記構造によって大きさが相違する様々なサイズのごみをそれぞれ効果的に掻きとり可能となる。また、前記擦拭により、ごみは前記溶着の施されていない部分から三枚重ねの箇所に入り込み、また、前記起毛部分に付着する。これにより大きさが相違する様々なサイズのごみをそれぞれ効果的に捕捉し除去することが可能とされる。 Such a cleaning sheet has a thick portion having a bowl shape by the three-layered portion and a thin portion having a groove shape located between the thick portions. At the time of wiping using such a sheet, the thick part has a function of scraping off dust and the like. Since the welding is performed partially, at the time of the wiping, a difference occurs in the deformation amount of the sheet between the portion where the welding is performed and the portion where the welding is not performed. If the amount of deformation of the sheet during wiping is uniform everywhere on the sheet, dust or debris of a certain size, i.e. dust, is scraped well by the sheet, but certain size of dust is scraped off very well. Although such a phenomenon occurs, according to such a sheet, it is possible to effectively scrape various sizes of dust having different sizes depending on the structure. In addition, due to the rubbing, dust enters a three-layered portion from a portion where the welding is not performed, and adheres to the raised portion. As a result, it is possible to effectively capture and remove various sizes of garbage having different sizes.
　清掃用シートは、前記非起毛部分と起毛部分とを交互に備えるようにしておくことが、この発明の好ましい態様の一つである。また、清掃用シートは、前記起毛部分を散点的に備えるようにしておくことが、この発明の好ましい態様の一つである。また、清掃用シートは、仮想の第一線分とこの第一線分に交叉する仮想の第二線分からなる仮想の網目に沿って施された直線状、破線状又は点線状の溶着痕を備えてさせるようにすることが、この発明の好ましい態様の一つである。また、この発明の好ましい態様の一つは、以上に説明した単層の清掃用シートとベースシートとを積層させて構成される清掃用シート（積層シート）である。具体的には、かかる積層シートは、ベースシートの表裏にそれぞれ、又は、前記ベースシートの表裏いずれかに、単層の前記清掃シートを貼り合わせて構成される。 It is one of the preferable embodiments of the present invention that the cleaning sheet is provided with the non-raised portions and the raised portions alternately. Moreover, it is one of the preferable aspects of this invention that the cleaning sheet is provided with the raised portions in a scattered manner. In addition, the cleaning sheet has a linear, broken line, or dotted line-shaped weld mark applied along a virtual mesh composed of a virtual first line segment and a virtual second line segment that intersects the first line segment. It is one of the preferred embodiments of the present invention to provide it. Moreover, one of the preferable aspects of this invention is the cleaning sheet (laminated sheet) comprised by laminating | stacking the single layer cleaning sheet and base sheet which were demonstrated above. Specifically, the laminated sheet is configured by laminating the single-layer cleaning sheet on the front and back of the base sheet or on either the front or back of the base sheet.
　また、前記第二の目的を達成するために、この発明にあっては、清掃用シートの製造方法を、長尺の不織布をその長さ方向に沿って搬送させながらこの不織布の少なくとも一部に、この不織布の搬送方向と直交する向きの断面形状を波形状とする屈曲部を、前記搬送方向に沿って連続的に形成させる第一工程と、
　第一工程によって立体化された不織布を三枚重ねの箇所を並列的に持つように扁平化させる第二工程と、
　前記扁平状態が維持されるように不織布に部分的な溶着を施す第三工程と、
　第三工程を経た不織布に加圧流体を吹き付けることにより起毛部分を形成させる第四工程とを備えるものとした。 Moreover, in order to achieve said 2nd objective, in this invention, the manufacturing method of the sheet | seat for cleaning is made to at least one part of this nonwoven fabric, conveying a long nonwoven fabric along the length direction. A first step of continuously forming a bent portion having a corrugated cross-sectional shape in a direction perpendicular to the conveyance direction of the nonwoven fabric along the conveyance direction;
A second step of flattening the non-woven fabric three-dimensionalized by the first step so as to have three overlapping portions in parallel;
A third step of applying partial welding to the nonwoven fabric so that the flat state is maintained;
And a fourth step of forming a raised portion by spraying a pressurized fluid onto the nonwoven fabric that has undergone the third step.
　前記第二工程と第三工程とを同時に実施させるようにすることが、この製造方法についての発明の好ましい態様の一つである。また、前記第一工程を経た不織布と、ベースシートとを重ね合わせた状態で、第三工程を実施するようにすれば、二層からなる前記積層シートを合理的に製造することができる。また、前記第一工程を経た一方不織布と、第一工程を経た他方不織布との間に、ベースシートを介在させた状態で第三工程を実施するようにすれば、三層からなる
前記積層シートを合理的に製造することができる。 It is one of the preferable aspects of the invention regarding this manufacturing method to perform the second step and the third step at the same time. Moreover, if the 3rd process is implemented in the state which overlap | superposed the nonwoven fabric which passed through said 1st process, and a base sheet, the said laminated sheet which consists of two layers can be manufactured reasonably. Moreover, if the 3rd process is implemented in the state which interposed the base sheet between the one nonwoven fabric which passed the said 1st process and the other nonwoven fabric which passed the 1st process, the said lamination sheet which consists of three layers Can be reasonably manufactured.
　この発明にかかる清掃用シートは、高い清掃能力を持つと共に、既存の不織布を利用して生成することができる。 The cleaning sheet according to the present invention has a high cleaning ability and can be produced using an existing non-woven fabric.
　また、この発明にかかる製造方法によれば、第一の観点にかかる清掃用シートを既存の不織布を出発原料として合理的に製造することができる。 Also, according to the manufacturing method of the present invention, the cleaning sheet according to the first aspect can be reasonably manufactured using an existing nonwoven fabric as a starting material.
図１はこの発明の一実施の形態にかかる清掃用シートの断面構成図であり、FIG. 1 is a cross-sectional configuration diagram of a cleaning sheet according to an embodiment of the present invention, 図２は一枚のベースシートと図１の構成を備えた二枚のシートとからなる清掃用シート（積層シート）の第一例を示した斜視構成図であり、FIG. 2 is a perspective configuration diagram showing a first example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG. 図３は一枚のベースシートと図１の構成を備えた二枚のシートとからなる清掃用シート（積層シート）の第二例を示した斜視構成図であり、FIG. 3 is a perspective configuration diagram showing a second example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG. 図４は一枚のベースシートと図１の構成を備えた二枚のシートとからなる清掃用シート（積層シート）の第三例を示した斜視構成図であり、FIG. 4 is a perspective configuration diagram showing a third example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG. 図５は一枚のベースシートと図１の構成を備えた二枚のシートとからなる清掃用シート（積層シート）の第四例を示した斜視構成図であり、FIG. 5 is a perspective configuration diagram showing a fourth example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG. 図６は一枚のベースシートと図１の構成を備えた二枚のシートとからなる清掃用シート（積層シート）の第五例を示した斜視構成図であり、FIG. 6 is a perspective configuration diagram showing a fifth example of a cleaning sheet (laminated sheet) composed of one base sheet and two sheets having the configuration of FIG. 図７は図１の構成を備えたシートの製造方法を実施する装置の要部構成を示した側面図であり、FIG. 7 is a side view showing the main configuration of an apparatus for carrying out the sheet manufacturing method having the configuration of FIG. 図８は図１の構成を備えたシートの製造方法を実施する装置の要部構成を示した平面図であり、FIG. 8 is a plan view showing the main configuration of an apparatus for carrying out the method for manufacturing a sheet having the configuration of FIG. 図９は前記製造方法の第一工程を実施する一対の成形ローラの要部を示した断面構成図であり、FIG. 9 is a cross-sectional configuration diagram showing the main parts of a pair of forming rollers for performing the first step of the manufacturing method, 図１０は前記製造方法の第二工程を経た不織布の断面構成図であり、FIG. 10 is a cross-sectional configuration diagram of the nonwoven fabric that has undergone the second step of the manufacturing method, 図１１は前記製造方法の第二工程及び第三工程を実施する押圧ローラの一例の要部斜視構成図であり、FIG. 11 is a perspective view of a main part of an example of a pressing roller that performs the second step and the third step of the manufacturing method, 図１２は図２～図６に示される積層シートの製造方法を実施する装置の要部構成を示した側面図である。FIG. 12 is a side view showing the main configuration of an apparatus for carrying out the method for manufacturing a laminated sheet shown in FIGS.
　以下、図１～図１２に基づいて、この発明の典型的な実施の形態について、説明する。この実施の形態にかかる清掃用シートＳは、乾いた状態で、あるいは、湿らせた状態で様々な清掃に利用可能なものである。かかるシートＳは、これを用いた拭き取り（擦拭）によって、ごみ、すなわち、塵埃ないし塵芥を効果的に捕捉し除去し得る構造を備えている。すなわち、かかるシートＳは清掃用の擦拭体として機能するものである。また、この実施の形態にかかる製造方法は、かかるシートＳを既存の不織布を出発原料としてかかる不織布から合理的に製造可能とするものである。かかるシートＳは、典型的には、そのまま清掃に利用され、あるいはまた、図示しないモップなどの清掃具本体の一部、例えばモップのヘッドに組み合わされてこの清掃具を用いた清掃に利用される。典型的には、かかるシートＳは、使い切りの擦拭体として提供され、前記のように清掃具と組み合わされる場合にはシートＳは清掃具の使用頻度などに合わせて適宜交換されることとなる。かかるシートＳは、水や各種の水溶液によってあらかじめ湿らせて提供される場合もあり、この場合にはシートＳは密閉容器に納められて提供される。 Hereinafter, a typical embodiment of the present invention will be described with reference to FIGS. The cleaning sheet S according to this embodiment can be used for various cleanings in a dry state or in a wet state. The sheet S has a structure capable of effectively capturing and removing dust, that is, dust or dust by wiping (wiping) using the sheet S. That is, the sheet S functions as a cleaning wiping body. In addition, the manufacturing method according to this embodiment enables such a sheet S to be reasonably manufactured from such a nonwoven fabric using an existing nonwoven fabric as a starting material. Typically, the sheet S is used for cleaning as it is, or is used for cleaning using a cleaning tool in combination with a part of a cleaning tool main body such as a mop (not shown), for example, a mop head. . Typically, such a sheet S is provided as a one-time-use wiping body, and when combined with a cleaning tool as described above, the sheet S is appropriately replaced according to the frequency of use of the cleaning tool. In some cases, the sheet S is provided by being pre-moistened with water or various aqueous solutions. In this case, the sheet S is provided in a sealed container.
　かかるシートＳは、少なくともその一部の断面形状を波形状とするように立体化された後、三枚重ねの箇所１を並列的に持つように扁平化されると共に、部分的な溶着を施されて前記扁平状態を維持されてなり、かつ、非起毛部分２と加圧流体Ａの吹き付けによって起毛された起毛部分３とを備えた不織布Ｍより構成されている。 Such a sheet S is three-dimensionalized so that at least a part of the cross-sectional shape thereof is a wave shape, and then flattened so as to have three overlapping portions 1 in parallel and subjected to partial welding. Thus, the flat state is maintained, and the non-raised portion 2 and the raised portion 3 raised by spraying the pressurized fluid A are used to form the nonwoven fabric M.
　図１に、かかるシートＳをその厚さ方向に断面にして、その断面構造を示す。（図示は省略するが、前記溶着の施されている箇所では三枚重ねの箇所１は上下に密着している。）かかるシートＳは前記三枚重ねの箇所１によってシートＳの対向する辺間に亘って畝状をなす厚い部分４と、この厚い部分４間に位置する溝状をなす薄い部分５とを有する。かかるシートＳを用いた擦拭時には、前記厚い部分４が塵埃などを掻きとる機能を持つ。前記溶着は部分的に施されていることから、前記擦拭時には、溶着の施されている部分と施されていない部分とでシートＳの変形量に差が生じる。擦拭時のシートＳの変形量がシートＳのどの箇所でも一様であると、ある特定の大きさのごみはシートＳによってよく掻きとれるが、ある大きさのごみはあまりよく掻きとれないという現象が生じるが、この実施の形態にかかるシートＳによれば前記構造によって大きさが相違する様々なサイズのごみをそれぞれ効果的に掻きとり可能となる。また、前記擦拭により、ごみは前記溶着の施されていない部分から三枚重ねの箇所１に入り込み、また、前記起毛部分３に付着する。これにより大きさが相違する様々なサイズのごみをそれぞれ効果的に捕捉し除去することが可能とされる。 FIG. 1 shows the cross-sectional structure of the sheet S in the thickness direction. (Although not shown, the three-layered portion 1 is in close contact with the upper and lower portions at the position where the welding is performed.) The sheet S is formed between the opposing sides of the sheet S by the three-layered portion 1. A thick portion 4 having a bowl shape and a thin portion 5 having a groove shape located between the thick portions 4 are provided. When the sheet S is rubbed, the thick portion 4 has a function of scraping dust and the like. Since the welding is performed partially, a difference occurs in the deformation amount of the sheet S between the portion where the welding is performed and the portion where the welding is not performed. When the deformation amount of the sheet S at the time of wiping is uniform in any part of the sheet S, a certain size of dust can be scraped well by the sheet S, but a certain size of dust cannot be scraped very well. However, according to the sheet S according to this embodiment, it is possible to effectively scrape various sizes of dust having different sizes depending on the structure. In addition, due to the rubbing, dust enters the three-layered portion 1 from the portion where the welding is not performed, and adheres to the raised portion 3. As a result, it is possible to effectively capture and remove various sizes of garbage having different sizes.
　図２～図６は、図１に示される清掃用シートＳを、ベースシートＳａの表裏にそれぞれ貼り合わせて清掃用シートを構成させた例を示している。（以下、この図２～図６に示される清掃用シートを積層シートＳ’と称する。）すなわち、二枚のシートＳ、Ｓと、一枚のベースシートＳａから清掃用シートＳを構成させている。図示の例では、ベースシートＳａはシートＳよりも幅が広く、ベースシートＳａの左側の縁はシートＳの左側の縁より外方に位置し、かつ、ベースシートＳａの右側の縁はシートＳの右側の縁より外方に位置されている。また、シートＳの右端部及び左端部にはそれぞれ三枚重ねとなっていない耳部６が形成されている。この耳部６は前記清掃具本体の一部にかかるシートＳを組み合わせるときの被挟持箇所などとして利用される。かかる左右の耳部６、６の間に前記複数の厚い部分４、４…が隣り合う厚い部分４、４の間に前記薄い部分５を介在させて並列状に形成されている。かかる積層シートＳ’は、擦拭に都合の良い適度な厚みを持つ。図示は省略するが、かかる積層シートＳ’は、シートＳとベースシートＳａの二枚から構成することもできる。 2 to 6 show examples in which the cleaning sheet S shown in FIG. 1 is bonded to the front and back of the base sheet Sa to form a cleaning sheet. (Hereinafter, the cleaning sheet shown in FIGS. 2 to 6 is referred to as a laminated sheet S ′.) That is, the cleaning sheet S is composed of two sheets S and S and one base sheet Sa. Yes. In the illustrated example, the base sheet Sa is wider than the sheet S, the left edge of the base sheet Sa is located outward from the left edge of the sheet S, and the right edge of the base sheet Sa is the sheet S. It is located outside the right edge of. Moreover, the ear | edge part 6 which is not overlying three sheets is formed in the right end part and left end part of the sheet | seat S, respectively. This ear | edge part 6 is utilized as a clamping location etc. when combining the sheet | seat S concerning a part of said cleaning tool main body. The plurality of thick portions 4, 4... Are formed in parallel with the thin portions 5 interposed between the adjacent thick portions 4, 4. The laminated sheet S ′ has an appropriate thickness that is convenient for rubbing. Although not shown in the drawings, the laminated sheet S ′ can be composed of two sheets, a sheet S and a base sheet Sa.
　この実施の形態にあっては、積層シートＳ’を構成するベースシートＳａは、シートＳに溶着可能な材質から構成されており、シートＳに施される前記溶着によってこのシートＳと一体化されるようになっている。典型的には、前記シートＳは合成繊維からなる不織布Ｍ又は合成繊維と合成繊維以外の繊維とを混ぜてなる不織布Ｍから構成され、また、前記ベースシートＳａも合成繊維からなる不織布Ｍ又は合成繊維と合成繊維以外の繊維とを混ぜてなる不織布Ｍから構成される。図２～図６に示される積層シートＳ’を構成するシートＳでは、前記溶着が後述する押圧ローラ２００の周面の形状によって溶着痕７を網目状とするように施されている。 In this embodiment, the base sheet Sa constituting the laminated sheet S ′ is made of a material that can be welded to the sheet S, and is integrated with the sheet S by the welding applied to the sheet S. It has become so. Typically, the sheet S is composed of a nonwoven fabric M composed of synthetic fibers or a nonwoven fabric M obtained by mixing synthetic fibers and fibers other than synthetic fibers, and the base sheet Sa is also composed of nonwoven fabric M composed of synthetic fibers or synthetic fibers. It is comprised from the nonwoven fabric M formed by mixing fibers and fibers other than synthetic fibers. In the sheet S constituting the laminated sheet S ′ shown in FIGS. 2 to 6, the welding is performed so that the welding mark 7 has a mesh shape depending on the shape of the peripheral surface of the pressing roller 200 described later.
　図２～図６に示される積層シートＳ’を構成するシートＳは、前記非起毛部分２と起毛部分３とを交互に備えている。特に、図６に示される積層シートＳ’を構成するシートＳは、前記起毛部分３を散点的に備えている。より詳細には、図２示される積層シートＳ’では、起毛部分３は、前記厚い部分４の連続方向に直交する向きに続く帯状を呈している。図３に示される積層シートＳ’では、起毛部分３は、前記厚い部分４の連続方向に沿った向きに続く帯状を呈している。図４及び図５に示される積層シートＳ’では、起毛部分３は、前記厚い部分４の連続方向に直交はしないがこれに交叉する向きに続く帯状を呈している。 The sheet S constituting the laminated sheet S ′ shown in FIGS. 2 to 6 includes the non-raised portions 2 and the raised portions 3 alternately. In particular, the sheet S constituting the laminated sheet S ′ shown in FIG. 6 includes the raised portions 3 in a scattered manner. More specifically, in the laminated sheet S ′ shown in FIG. 2, the raised portion 3 has a strip shape that continues in a direction orthogonal to the continuous direction of the thick portion 4. In the laminated sheet S ′ shown in FIG. 3, the raised portion 3 has a strip shape that continues in the direction along the continuous direction of the thick portion 4. In the laminated sheet S ′ shown in FIGS. 4 and 5, the raised portion 3 has a strip shape that is not orthogonal to the continuous direction of the thick portion 4 but continues in the direction crossing the continuous direction.
　次いで、この実施の形態にかかる製造方法は、以上の構造を備えた清掃用シートＳを、既存の長尺の不織布Ｍをその長さ方向に沿って搬送させる過程で、搬送されるかかる不織布Ｍに順次に加工を施して、かかる不織布Ｍから連続的に前記清掃用シートＳを生成させるものである。 Next, in the manufacturing method according to this embodiment, the cleaning sheet S having the above structure is transported in the process of transporting the existing long nonwoven fabric M along its length direction. The cleaning sheet S is continuously generated from the nonwoven fabric M by sequentially processing.
　かかる製造方法は、以下の第一工程～第四工程を含む。もっとも、かかる第一工程に先立って第一工程～第四工程以外の他の工程が存在することもあり、また、第四工程の後に他の工程が存在しても良く、さらに、第一工程と第二工程の間、第二工程と第三工程の間、第三工程と第四工程の間に他の工程が存在しても構わない。 Such a manufacturing method includes the following first to fourth steps. However, there may be other steps other than the first step to the fourth step prior to the first step, and there may be other steps after the fourth step. There may be other steps between the second step, between the second step and the third step, and between the third step and the fourth step.
　長尺の不織布Ｍは、典型的には巻かれてロール状になっており、その巻き終わりから順次引き出されて搬送される。かかる不織布Ｍとしては、典型的には一般的なスパンレース不織布Ｍなどを用いることができる。 The long nonwoven fabric M is typically wound into a roll shape, and is sequentially pulled out from the end of the winding and conveyed. As the nonwoven fabric M, a typical spunlace nonwoven fabric M can be typically used.
　第一工程は、搬送される前記不織布Ｍの少なくとも一部に、この不織布Ｍの搬送方向ｘと直交する向きの断面形状を波形状とする屈曲部Ｍａ（図９参照）を、前記搬送方向ｘに沿って連続的に形成させる工程である。 In the first step, at least a part of the nonwoven fabric M to be transported is provided with a bent portion Ma (see FIG. 9) having a cross-sectional shape in a direction perpendicular to the transport direction x of the nonwoven fabric M as a waveform. It is the process of forming continuously along.
　図７及び図８に示される例では、かかる第一工程を、一対の成形ローラ１００、１００によって実施している。かかる一対の成形ローラ１００、１００はその回転により、前記不織布Ｍを間に挟んで、この一対の成形ローラ１００、１００間に搬送上流側から不織布Ｍを連続的に引き込み搬送下流側に連続的に送り出すようになっている。各成形ローラ１００はそれぞれ、その周面部に、その回転軸を巡る周回溝１０１を、その回転軸方向１０２に隣り合う周回溝１０１との間に間隔を開けて複数備えている。隣り合う周回溝１０１の間にはそれぞれ、周回歯１０３が形成されている。そして、一対の成形ローラ１００、１００が互いに向き合う側において、一方の成形ローラ１００の各周回溝１０１にそれぞれ、他方の成形ローラ１００の周回歯１０３が入り込み、かつ、一方の成形ローラ１００の各周回歯１０３が、他方の成形ローラ１００の周回溝１０１に入り込むようになっている。図示の例では、かかる周回溝１０１内に周回歯１０３は両者の間に不織布Ｍを緩く挟み込む程度に入り込むようになっている。これにより、第一工程を経た不織布Ｍはその左右両側縁部を除いた箇所に前記屈曲部Ｍａが形成されて幅が狭まった状態で第二工程に向けて送り出されるようになっている。 In the example shown in FIGS. 7 and 8, the first step is performed by a pair of forming rollers 100 and 100. The pair of forming rollers 100, 100 are rotated so that the nonwoven fabric M is sandwiched between them, and the nonwoven fabric M is continuously drawn from the upstream side of conveyance between the pair of molding rollers 100, 100 and continuously downstream of the conveyance side. It is designed to send out. Each forming roller 100 is provided with a plurality of circumferential grooves 101 around the rotation axis on the circumferential surface portion with a space between the circumferential grooves 101 adjacent to each other in the rotation axis direction 102. Circumferential teeth 103 are formed between adjacent circumferential grooves 101, respectively. Then, on the side where the pair of molding rollers 100, 100 face each other, the circumferential teeth 103 of the other molding roller 100 enter the respective circumferential grooves 101 of the one molding roller 100, and each revolution of the one molding roller 100. The teeth 103 enter the circular groove 101 of the other forming roller 100. In the example shown in the figure, the circular teeth 103 enter the circular groove 101 so that the nonwoven fabric M is loosely sandwiched between them. Thereby, the nonwoven fabric M which passed through the 1st process is sent out toward the 2nd process in the state which the said bending part Ma was formed in the location except the right-and-left both sides edge part, and the width | variety narrowed.
　第二工程は、前記第一工程によって前記屈曲部Ｍａが施されて立体化された不織布Ｍを前記シートＳの三枚重ねの箇所１となる三枚重ねの箇所Ｍａを並列的に持つように扁平化させる工程である。また、第三工程は、前記第二工程によって扁平状態となった不織布Ｍのこの扁平状態が維持されるように不織布Ｍに部分的な溶着を施す工程である。 In the second step, the non-woven fabric M, which is three-dimensionalized with the bent portion Ma applied in the first step, has a three-layered position Ma that becomes the three-layered position 1 of the sheet S in parallel. It is a process of flattening. The third step is a step of performing partial welding on the nonwoven fabric M so that the flat state of the nonwoven fabric M that has been flattened by the second step is maintained.
　図７及び図８に示される例では、かかる第二工程と第三工程とを、第一工程を経て搬送されてくる不織布Ｍを受け台３００との間で挟み込みながら回転して第四工程に向けて送り出す押圧ローラ２００によって同時に実施している。図示の例では、受け台３００は超音波振動子で構成されている。図示の例とは異なり、かかる受け台３００もローラ状に形成して超音波振動させるようにしても構わない。押圧ローラ２００はその周面に、図８や図１１に示されるように、網目状の模様２０１が付されている。これにより、扁平化した不織布Ｍに、仮想の第一線分とこの第一線分に交叉する仮想の第二線分からなる仮想の網目に沿って施された直線状の溶着痕７が付されるようになっている。この網目状の模様２０１を構成する線部分は、押圧ローラ２００のその余の周面より僅かに突出している。不織布Ｍがこの押圧ローラ２００と受け台３００との間に挟み込まれると、図１０に示されるように、不織布Ｍの屈曲部Ｍａが形成された箇所が全体に一様に押しつぶされ、不織布Ｍはその搬送方向ｘに沿って三枚重ねの箇所Ｍａを並列的に持つように扁平化される。それと同時に、押しつぶされて重なり合った不織布Ｍの布面同士が受け台３００から加わる超音波振動により発生する熱で溶着される。溶着されるのは、押圧ローラ２００の周面に形成されている模様２０１部分だけである。これにより、扁平状態となった不織布Ｍのこの扁平状態が維持されるようになっている。図示の例では、図８や図１１に示されるかかる押圧ローラ２００の模様２０１により、扁平化された不織布Ｍに、これから生成される前記シートＳ及び前記積層シートＳ’を構成するシートＳに付される溶着痕７となる網目状の溶着痕が付けられる。かかる押圧ローラ２００の模様２０１は、扁平化した不織布Ｍにこの扁平状態を維持する部分的な溶着を施すものであれば良く、前記網目状に限られるものではない。例えば、前記押圧ローラ２００の模様２０１を複数の突出部の集合から構成するようにすれば、前記溶着痕７を、破線状、あるいは、点線状に形成できる。 In the example shown in FIGS. 7 and 8, the second process and the third process are rotated while being sandwiched between the non-woven fabric M conveyed through the first process and the cradle 300 to the fourth process. It is carried out at the same time by the pressure roller 200 that sends it out. In the illustrated example, the cradle 300 is constituted by an ultrasonic transducer. Unlike the illustrated example, the cradle 300 may also be formed in a roller shape and vibrated ultrasonically. As shown in FIGS. 8 and 11, the pressing roller 200 has a mesh pattern 201 on its peripheral surface. As a result, the flattened non-woven fabric M is provided with a linear welding mark 7 applied along a virtual mesh composed of a virtual first line segment and a virtual second line segment intersecting the first line segment. It has become so. The line portion constituting the mesh pattern 201 slightly protrudes from the remaining peripheral surface of the pressing roller 200. When the nonwoven fabric M is sandwiched between the pressing roller 200 and the cradle 300, as shown in FIG. 10, the portion where the bent portion Ma of the nonwoven fabric M is formed is uniformly crushed as a whole. It is flattened so as to have three overlapping points Ma in parallel along the transport direction x. At the same time, the cloth surfaces of the crushed and overlapped nonwoven fabric M are welded by heat generated by ultrasonic vibration applied from the cradle 300. Only the portion of the pattern 201 formed on the peripheral surface of the pressure roller 200 is welded. Thereby, this flat state of the nonwoven fabric M which became the flat state is maintained. In the example shown in the drawing, the nonwoven fabric M flattened by the pattern 201 of the pressing roller 200 shown in FIGS. 8 and 11 is attached to the sheet S constituting the sheet S and the laminated sheet S ′ generated from now on. A network-like welding mark is formed to be the welding mark 7 to be formed. The pattern 201 of the pressing roller 200 is not limited to the mesh shape as long as the flattened nonwoven fabric M is partially welded to maintain the flat state. For example, if the pattern 201 of the pressing roller 200 is configured from a set of a plurality of protrusions, the welding mark 7 can be formed in a broken line shape or a dotted line shape.
　第四工程は、前記第三工程を経た不織布Ｍに加圧空気や加圧水蒸気などの加圧流体Ａを吹き付けることにより起毛部分３を形成させる工程である。 The fourth step is a step of forming the raised portions 3 by spraying a pressurized fluid A such as pressurized air or pressurized steam onto the nonwoven fabric M that has undergone the third step.
　図示の例では、前記第三工程を経て搬送されてくる不織布Ｍの表面にエアノズル４００によって加圧流体Ａとしての加圧空気を吹き付けることで、この吹き付け箇所の不織布Ｍを延伸・脆弱化させて、この吹き付け箇所をかかる不織布Ｍから生成される前記シートＳの起毛部分３とさせるようにしている。図示の例では、前記第二工程で形成された三枚重ねの箇所Ｍａが形成された範囲に起毛部分３を形成し、この範囲が非起毛部分２と起毛部分３とを交互に備えるようにしている。エアノズル４００は、典型的には、その動作が図示しない制御装置によりコントロールされるものを利用する。エアノズル４００自体を不織布Ｍの搬送方向ｘに対し前後又は／及び左右に所定のコントロールの下移動させることにより、第三工程を経た不織布Ｍから図２～図５に示されるような起毛部分３をシートＳに形成させることができる。また、エアノズル４００から加圧流体Ａを間欠的に噴出させれば、図６に示されるように前記シートＳに起毛部分３を散点的に形成することができる。 In the example of illustration, the nonwoven fabric M of this spraying part is extended and weakened by spraying the pressurized air as the pressurized fluid A with the air nozzle 400 on the surface of the nonwoven fabric M conveyed through the said 3rd process. The sprayed portion is the raised portion 3 of the sheet S generated from the nonwoven fabric M. In the illustrated example, the raised portions 3 are formed in the range where the three-layered place Ma formed in the second step is formed, and this range includes the non-raised portions 2 and the raised portions 3 alternately. ing. The air nozzle 400 typically uses an air nozzle whose operation is controlled by a control device (not shown). By moving the air nozzle 400 itself back and forth or / and right and left with respect to the conveyance direction x of the nonwoven fabric M under predetermined control, the raised portions 3 as shown in FIGS. The sheet S can be formed. Further, if the pressurized fluid A is intermittently ejected from the air nozzle 400, the raised portions 3 can be formed in a scattered manner on the sheet S as shown in FIG.
　以上の製造方法によって、既存の不織布Ｍから図１に示される清掃シートＳを合理的に、ひいては安価に生成することが可能となる。すなわち、前記起毛部分３では繊維がほぐれて繊維先端間の隙間が開いているので微細なごみを取り込むことができ、非起毛部分２では繊維同士が絡み合った状態になっているので繊維の腰が弱くなっている起毛部ではかき取れないような大きさのごみでもかき取ってしまうことができる。すなわち、この実施の形態にかかる製造方法によれば、既存の一般的な不織布Ｍを追加工してこのような優れた機能を持った清掃用シートＳを低コストで製造可能となる。典型的には、前記第四工程後、長尺状態にあるシートＳはその搬送方向ｘに直交する向きに沿ってカットされ、所望の大きさを持ったシートＳに切り分けられる。 By the above manufacturing method, it becomes possible to produce the cleaning sheet S shown in FIG. 1 from the existing nonwoven fabric M reasonably and inexpensively. That is, since the fibers are loosened in the raised portions 3 and the gaps between the fiber ends are opened, fine dust can be taken in. In the non-raised portions 2, the fibers are intertwined with each other, so the fibers are weak. It is possible to scrape even dust of a size that cannot be scraped off by the raised portion. That is, according to the manufacturing method concerning this embodiment, it becomes possible to manufacture the cleaning sheet S having such an excellent function by additionally processing an existing general nonwoven fabric M at a low cost. Typically, after the fourth step, the sheet S in a long state is cut along a direction orthogonal to the conveyance direction x and cut into sheets S having a desired size.
　前記第一工程を経た不織布Ｍと、ベースシートＳａとを重ね合わせた状態で、第三工程を実施するようにすれば、一枚のシートＳと一枚のベースシートＳａとからなる積層シートＳ’（図示は省略する。）を連続的に生成することが可能となる。 If the third step is performed in a state where the nonwoven fabric M that has undergone the first step and the base sheet Sa are overlapped, a laminated sheet S composed of one sheet S and one base sheet Sa. '(Not shown) can be continuously generated.
　また、前記第一工程を経た一方不織布Ｍと、前記第一工程を経た他方不織布Ｍとの間に、ベースシートＳａを介在させた状態で第三工程を実施するようにすれば、図２～図６に示される前記積層シートＳ’を連続的に生成することが可能となる。図１２にこの積層シートＳ’の清掃方法を実施する製造装置の要部を模式的に表す。ベースシートＳａは巻かれてロール状になっており、その巻き終わりから順次引き出されて搬送される。かかるベースシートＳａとしては、前記シートＳを構成する不織布Ｍよりも強度が強くて、より低価格な例えばサーマルボンド不織布Ｍ等のような汎用不織布Ｍを用いることが好適である。このように搬送されるベースシートＳａの上側において積層シートＳ’を構成する一方のシートＳとなる一方不織布Ｍが搬送され、かかるベースシートＳａの下側において積層シートＳ’を構成する他方のシートＳとなる他方不織布Ｍが搬送される。一方不織布Ｍ及び他方不織布Ｍにそれぞれ前記第一工程が実施された後に、かかる一方不織布Ｍと他方不織布Ｍとの間にベースシートＳａを挟んだ状態でこの三者は前記第二工程及び第三工程を実施する一対の押圧ローラ２００、２００の間に送り込まれ一体化される。この一対の押圧ローラ２００、２００の一方を超音波振動されるように構成しておく。そして、かかる一対の押圧ローラ２００、２００の下流において一方不織布Ｍ及び他方不織布Ｍにそれぞれ第四工程を実施するエアノズル４００によって前記シートＳにおける起毛部分３が形成される。 In addition, if the third step is performed with the base sheet Sa interposed between the one nonwoven fabric M that has passed the first step and the other nonwoven fabric M that has passed the first step, FIG. The laminated sheet S ′ shown in FIG. 6 can be continuously generated. FIG. 12 schematically shows a main part of a manufacturing apparatus that performs the cleaning method for the laminated sheet S ′. The base sheet Sa is wound into a roll shape, and is sequentially pulled out from the end of the winding and conveyed. As such a base sheet Sa, it is preferable to use a general-purpose non-woven fabric M such as a thermal bond non-woven fabric M that is stronger and less expensive than the non-woven fabric M constituting the sheet S. The non-woven fabric M, which becomes one sheet S constituting the laminated sheet S ′, is conveyed on the upper side of the base sheet Sa thus conveyed, and the other sheet constituting the laminated sheet S ′ on the lower side of the base sheet Sa. The other nonwoven fabric M which becomes S is conveyed. On the other hand, after the first step is performed on the nonwoven fabric M and the other nonwoven fabric M, respectively, the three parties are in the state of sandwiching the base sheet Sa between the one nonwoven fabric M and the other nonwoven fabric M. It is fed between a pair of pressure rollers 200 and 200 for performing the process and integrated. One of the pair of pressing rollers 200, 200 is configured to be ultrasonically vibrated. And the raising part 3 in the said sheet | seat S is formed by the air nozzle 400 which implements a 4th process to the one nonwoven fabric M and the other nonwoven fabric M, respectively downstream of this pair of press rollers 200,200.
　なお、本発明は上記実施例等に記載された態様に限定されるものではなく、特許請求の範囲に記載された発明を実施化したすべての態様を含むものである。 In addition, this invention is not limited to the aspect described in the said Example etc., All the aspects which implemented the invention described in the claim are included.

Claims (9)

  1. 　立体的な波形を扁平状に押しつぶしてできる三枚重ねの厚い部分を並列的に配した箇所を有すると共に、前記扁平状態を維持する部分的な溶着と、加圧流体の吹き付けによって起毛された起毛部分とを備えた不織布よりなることを特徴とする清掃用シート。 Raised by having a portion in which three thick layers formed by crushing a three-dimensional waveform in a flat shape are arranged in parallel, and raising the portion by maintaining the flat state and blowing pressurized fluid A cleaning sheet comprising a non-woven fabric provided with a portion.
  2. 　非起毛部分と起毛部分とを交互に備えてなることを特徴とする請求項１に記載の清掃用シート。 The cleaning sheet according to claim 1, comprising non-raised portions and raised portions alternately.
  3. 　起毛部分を散点的に備えてなることを特徴とする請求項１に記載の清掃用シート。 The cleaning sheet according to claim 1, wherein the brushed portions are provided in a scattered manner.
  4. 　仮想の第一線分とこの第一線分に交叉する仮想の第二線分からなる仮想の網目に沿って施された直線状、破線状又は点線状の溶着痕を備えてなることを特徴とする請求項１に記載の清掃用シート。 It is characterized by comprising a linear, broken line-like or dotted line-shaped welding mark applied along a virtual mesh consisting of a virtual first line segment and a virtual second line segment intersecting with the first line segment. The cleaning sheet according to claim 1.
  5. 　請求項１に記載の清掃用シートを、ベースシートの表裏にそれぞれ、又は、前記ベースシートの表裏いずれかに、貼り合わせてなることを特徴とする清掃用シート。 A cleaning sheet according to claim 1, wherein the cleaning sheet according to claim 1 is bonded to each of the front and back sides of the base sheet or to the front and back sides of the base sheet.
  6. 　長尺の不織布をその長さ方向に沿って搬送させながらこの不織布の少なくとも一部に、この不織布の搬送方向と直交する向きの断面形状を波形状とする屈曲部を、前記搬送方向に沿って連続的に形成させる第一工程と、
    　第一工程によって立体化された不織布を三枚重ねの箇所を並列的に持つように扁平化させる第二工程と、
    　前記扁平状態が維持されるように不織布に部分的な溶着を施す第三工程と、
    　第三工程を経た不織布に加圧流体を吹き付けることにより起毛部分を形成させる第四工程とを備えることを特徴とする清掃用シートの製造方法。     While transporting a long nonwoven fabric along its length direction, at least a part of this nonwoven fabric has a bent portion having a corrugated cross-sectional shape perpendicular to the transport direction of this nonwoven fabric along the transport direction. A first step to form continuously;
    A second step of flattening the non-woven fabric three-dimensionalized by the first step so as to have three overlapping portions in parallel;
    A third step of applying partial welding to the nonwoven fabric so that the flat state is maintained;
    And a fourth step of forming a raised portion by spraying a pressurized fluid onto the nonwoven fabric that has undergone the third step.
  7. 　第二工程と第三工程とが同時に実施されることを特徴とする請求項６に記載の清掃用シートの製造方法。 The method for producing a cleaning sheet according to claim 6, wherein the second step and the third step are performed simultaneously.
  8. 　第一工程を経た不織布と、ベースシートとを重ね合わせた状態で、第三工程を実施することを特徴とする請求項６に記載の清掃用シートの製造方法。 The method for producing a cleaning sheet according to claim 6, wherein the third step is performed in a state in which the nonwoven fabric that has undergone the first step and the base sheet are overlapped.
  9. 　第一工程を経た一方不織布と、第一工程を経た他方不織布との間に、ベースシートを介在させた状態で第三工程を実施することを特徴とする請求項６に記載の清掃用シートの製造方法。 The cleaning sheet according to claim 6, wherein the third step is performed in a state where a base sheet is interposed between the one nonwoven fabric that has undergone the first step and the other nonwoven fabric that has undergone the first step. Production method.
PCT/JP2013/056604 2013-03-11 2013-03-11 Cleaning sheet and production method therefor WO2014141360A1 (en)

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JP2013007132A (en) * 2011-06-23 2013-01-10 Kao Corp Composite sheet and method for producing the same
JP2013005878A (en) * 2011-06-23 2013-01-10 Kao Corp Cleaning sheet
JP2013057151A (en) * 2011-09-09 2013-03-28 Kao Corp Nonwoven fabric

Cited By (3)

* Cited by examiner, † Cited by third party
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WO2015198949A1 (en) * 2014-06-26 2015-12-30 ユニ・チャーム株式会社 Non-woven fabric
JP2016008367A (en) * 2014-06-26 2016-01-18 ユニ・チャーム株式会社 Non-woven fabric
JP2016106716A (en) * 2014-12-03 2016-06-20 ユニチカトレーディング株式会社 Cleaning cloth

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JPWO2014141360A1 (en) 2017-02-16

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