JP2019216857A - Cleaning sheet - Google Patents

Abstract

To provide a cleaning sheet capable of catching small dust and twisting off large dust.SOLUTION: A cleaning sheet 1 comprising a nonwoven fabric has a first direction Dand a second direction Dorthogonal to each other, a thickness direction T, and a cleaning area CR. The cleaning sheet 1 includes, in the cleaning area CR, a plurality of first flap parts 11 projecting in one direction Dof the first direction Dand a plurality of second flap parts 21 projecting in the other direction Dof the first direction D. The cleaning sheet 1 is configured such that: each of the plurality of first flap parts 11 and each of the plurality of second flap parts 21 comprise one ends 13, 23 and the other ends 15, 25, fixing end parts 17, 27, and free end parts 19, 29 bent so as to project in a direction away from the fixing end parts 17, 27; and each of the plurality of first flap parts 11 and each of the plurality of second flap parts 21 are adjacently arranged.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a cleaning sheet.

A cleaning sheet for cleaning dust, dust and the like existing on a surface to be cleaned has been known, and various improvements have been made from the viewpoint of improving cleanability.
For example, Patent Document 1 discloses a cleaning sheet including a sheet structure forming a cleaning unit. The sheet structure includes a group of cuts formed by forming a large number of cuts in a predetermined pattern on a sheet raw material. A sheet material having a plurality of slit holes formed by extending the sheet material in a direction intersecting with the thickness direction of the sheet material and widening a plurality of cuts constituting at least a part of the cut group. The cleaning sheet is provided, wherein at least a part of the slit holes in the sheet material is located in the cleaning unit.

JP 2013-27682 A

In the cleaning sheet described in Patent Document 1, the group of cuts is provided to extend the cleaning sheet in a direction intersecting the thickness direction of the cleaning sheet, and the group of cuts directly contributes to the cleaning property of the cleaning sheet. Not something.
Therefore, an object of the present disclosure is to provide a cleaning sheet that can take in small dust and also can trap large dust.

  The present disclosure is a cleaning sheet made of a nonwoven fabric, comprising: a first direction, a second direction, and a thickness direction orthogonal to each other; and a cleaning area. A plurality of first flap portions protruding in one direction, and a plurality of second flap portions protruding in the other direction of the first direction. Each of the second flap portions is one end and the other end, a fixed end connecting the one end and the other end, and is convex from the one end and the other end in a direction away from the fixed end. And a plurality of first flap portions and each of the plurality of second flap portions are located adjacent to each other. .

  The cleaning sheet according to the embodiment of the present disclosure can take in small dust and entangle large dust.

FIG. 1 is a front view of a cleaning sheet 1 according to the first embodiment. FIG. 2 is a rear view of the cleaning sheet 1. FIG. 3 is an enlarged perspective view of a region III in FIG. FIG. 4 is a diagram for explaining the reciprocating motion of the first flap portion 11 and the second flap portion 21, and corresponds to an enlarged perspective view of a region III in FIG. FIG. 5 is a diagram for explaining the cleaning sheet 1 after cleaning the surface to be cleaned. FIG. 6 is a diagram for explaining a state in which the cleaning sheet 1 is attached to the cleaning tool 101. FIG. 7 is a front view of the multilayer cleaning sheet 51 according to the second embodiment. FIG. 8 is a rear view of the multilayer cleaning sheet 51. FIG. 9 is an end view of the multilayer cleaning sheet 51 taken along the line III-III in FIG. 7. FIG. 10 is an enlarged perspective view of a region X in FIG. FIG. 11 is a diagram for explaining the movable region of the flap portion. FIG. 12 is a diagram for describing an example of the flap portion in the cleaning sheet of the present disclosure.

[Definition]
・ "Area" of flap
In this specification, the area of each of the flap portions (the “first flap portion and / or the second flap portion” may be simply referred to as “flap portion”) is determined by the free end and the fixed portion constituting the flap portion. The area defined by the end means the area measured from the thickness direction of the cleaning sheet.

・ Movable area of flap
In the present specification, the movable region of the flap portion (the “first movable region of the first flap portion and the second movable region of the second flap portion” may be simply referred to as “movable region”) When the sheet is folded one or more times at any position so as to be in contact with the remaining portion of the cleaning sheet, it means the maximum area where the flap portion can exist.

  FIG. 11 is a view for explaining a movable region of the flap portion. The flap portion 201 includes one end 203 and the other end 205, a fixed end 207 that linearly connects the one end 203 and the other end 205, and one end. 203 and a free end 209 protruding in a direction away from the fixed end 207 with the other end 205 as a starting point. The free end 209 is a straight line passing through the one end 203 and the farthest part 211. And a straight line passing through the other end 205 and the farthest part 211.

FIG. 11 also shows a flap portion 201a, a flap portion 201b, a flap portion 201c, and a flap portion 201d (when folded at the fixed end portion 207) when the flap portion 201 is folded once at different positions. The movable region 213 has an arc 215 centered on the one end 203, a radius of a straight line passing through the one end 203 and the farthest part 211, and an arc 215 centered on the other end 205, passing the other end 205 and the farthest part 211. It is demarcated by an arc 217 having a radius of a straight line portion.
Note that the flap portion 201 shown in FIG. 11 is for describing the movable area of the flap portion in the cleaning sheet of the present disclosure, and the flap portion 201 itself shown in FIG. Does not correspond to the flap part.

When the flap portion is a flap portion 301 having a free end portion 309 composed of a semicircular arc portion as shown in FIG. 12A, the movable area (not shown) of the flap portion 301 is The free end 309 of the portion 301 and the free end 309 when the flap portion 301 is folded at the fixed end 307 are defined.
The same applies to the movable region in the case where the flap portion is a flap portion having a free end composed of an arc portion smaller than a semi-arc portion.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A cleaning sheet made of a nonwoven fabric, comprising: a first direction, a second direction, and a thickness direction that are orthogonal to each other, and a cleaning area,
The cleaning sheet includes, in the cleaning area, a plurality of first flap portions projecting in one direction in a first direction, and a plurality of second flap portions projecting in the other direction in the first direction.
Each of the plurality of first flap portions and the plurality of second flap portions has one end and the other end, a fixed end connecting the one end and the other end, and the one end and the other end as starting points. A free end that is curved so as to protrude in a direction away from the fixed end,
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other.
The above cleaning sheet.

The cleaning sheet includes a plurality of first flap portions and a plurality of second flap portions having a predetermined configuration.
When the cleaning sheet is attached to the cleaning tool and the cleaning sheet is moved in one direction in the first direction when cleaning the surface to be cleaned, the first flap portion comes into contact with a high friction portion (for example, a dirty portion). At this time, the first flap portion is folded in the other direction with the first surface inward (hereinafter, "the flap portion is folded in the other direction with the first surface inward" is simply referred to as " The flap portion may be referred to as “turned back (in the other direction)”), a first opening is formed in the cleaning sheet at the place where the first flap portion was present, and small dust is removed from the first sheet. From the opening, it can be taken into the inside (for example, between the cleaning sheet and the cleaning tool, and when the cleaning sheet is folded and used, between the folded cleaning sheets). Capturing garbage into the interior through the opening Is sometimes referred to as “small dust taking action”). In addition, since the small dust taking-in action is highest near the fixed end of the first opening, it tends to be higher when the cleaning sheet is moved in one direction. The small dust is also taken in between the fibers of the nonwoven fabric and removed.

  In addition, the cleaning sheet is moved in one direction in the first direction, the first flap portion is folded back in the other direction, and the cleaning sheet is moved in the other direction in the first direction, and the first flap portion is returned in one direction. When performing the reciprocating motion with the first flap portion, the first flap portion can entangle large dust (hereinafter, the term "large dust entanglement effect" refers to the fact that the flap portion performs reciprocating motion to entangle large dust). In some cases). Note that the large dust entanglement action tends to be higher when the first flap portion is folded in the other direction, that is, when the cleaning sheet is moved in one direction, because the thickness of the cleaning sheet is increased. is there.

  Furthermore, when cleaning the surface to be cleaned using the cleaning sheet, dust, such as hair and dust, existing on the surface to be cleaned is first captured at the peripheral portion of the cleaning sheet, and is removed at the peripheral portion of the cleaning sheet. Uncollected dust tends to move to the center of the cleaning sheet. Therefore, when the amount of dust captured by the cleaning sheet increases, the amount of captured dust, such as hair and dust, and the dust, such as hair and dust, existing on the surface to be cleaned are increased at the periphery of the cleaning sheet. They tend to connect and form a rod-like garbage link. The first flap portion keeps holding the dust linked body when performing the reciprocating motion (hereinafter, the action of keeping the dust linked body held when the flap portion performs the reciprocating motion is referred to as a “dust linked body holding action”. "). In addition, since the thickness of the cleaning sheet increases, the dust linked body holding action tends to be higher when the first flap portion is folded in the other direction, that is, when the cleaning sheet is moved in one direction. It is in.

  Further, when the first flap portion is folded, that is, when the cleaning sheet is moved in one direction, the cleaning sheet is an area overlapping the folded first flap portion in the thickness direction. Since there is an uneven area including the convex area, the first opening, and the concave area which is an area overlapping in the thickness direction, the wiping property of dirt (for example, sebum dirt) by the cleaning sheet is improved. (Hereinafter, wiping the dirt by forming the uneven area by folding the flap portion may be referred to as “dirt wiping action”). In addition, when the first flap portion is folded back, a new surface (clean surface) of the cleaning sheet is disposed on the cleaning surface side, so that dirt wiping performance is improved.

Focusing on the plurality of second flap portions, similar to the plurality of first flap portions, they have a small dust taking action, a large dust entanglement action, a dust linked body holding action, and a dirt wiping action. When the cleaning sheet is being moved in the other direction of the first direction, the cleaning sheet tends to be higher.
As described above, even when the cleaning sheet is moved in any one of the first direction and the other direction, the cleaning sheet has a small dust taking action, a large dust entanglement action, a dust linked body holding action, and a dirt wiping action. Can be shown.

[Aspect 2]
In the first direction, the cleaning sheet includes a first flap portion having a relatively small area disposed inward as the plurality of first flap portions, and a first flap portion having a relatively small area disposed outward. A large first flap portion, wherein the plurality of second flap portions are a second flap portion having a relatively small area disposed inward and a relatively small area being disposed outward. The cleaning sheet according to aspect 1, further comprising a second flap portion having a large size.

  In the cleaning sheet, when the first flap portion and the second flap portion having a large area arranged outwardly in the first direction reciprocate, catch the dust present on the surface to be cleaned, and Even when the amount of dust caught by the cleaning sheet is increased to form a linked dust body, the first flap portion and the second flap portion having a large area can easily hold the linked dust body. In addition, the first flap portion and the second flap portion having a small area disposed inside capture the dust left by the first flap portion and the second flap portion having a large area disposed outside. can do.

[Aspect 3]
Each of the plurality of first flap portions has a first movable region that is a maximum region where the first flap portion can exist when the first flap portion is folded at an arbitrary position, and the plurality of second flap portions are provided. Each of the flap portions has a second movable region that is a maximum region where the second flap portion can exist when the second flap portion is folded at an arbitrary position,
As the plurality of first flap portions and the plurality of second flap portions, the cleaning sheet is arranged adjacent to the first movable region of the first flap portion and the second movable region of the second flap portion. And including those overlapping in the thickness direction,
The cleaning sheet according to aspect 1 or 2.

  Since the cleaning sheet includes the predetermined first flap portion and the second flap portion, the predetermined first flap portion and the second flap portion may interfere with each other when the cleaning sheet cleans the surface to be cleaned. Accordingly, they can make complicated movements, and can exhibit the above-mentioned small dust taking-in action, large dust entanglement action, dust linked body holding action, and dirt wiping action.

[Aspect 4]
The first flap portion and the second flap portion overlap in the thickness direction as the plurality of first flap portions and the plurality of second flap portions, wherein the cleaning sheet is disposed adjacent to the cleaning sheet. The cleaning sheet according to any one of aspects 1 to 3, including a cleaning sheet.

  Since the cleaning sheet includes a predetermined first flap portion and a second flap portion, when the cleaning sheet cleans the surface to be cleaned, the predetermined first flap portion and the second flap portion interfere with each other. By doing so, they can make complicated movements, and can exhibit the above-mentioned small dust taking action, large dust entanglement action, dust linked body holding action, and dirt wiping action.

[Aspect 5]
The free end of the first flap portion is the free end portion of the second flap portion as the plurality of first flap portions and the plurality of second flap portions, where the cleaning sheet is disposed adjacent to the cleaning sheet. The cleaning sheet according to any one of aspects 1 to 4, wherein the cleaning sheet does not intersect with the cleaning sheet, but includes one in which the fixed end portion of the first flap portion intersects with the fixed end portion of the second flap portion. .

  Since the cleaning sheet includes a predetermined first flap portion and a second flap portion, when the cleaning sheet cleans the surface to be cleaned, the predetermined first flap portion and the second flap portion reciprocate. While maintaining the degree of freedom of the free ends that serve as starting points, they can make complicated movements by interfering with each other, and the above-mentioned small dust take-in action, large dust entanglement action, dust connection The body holding action and the dirt wiping action can be further exhibited.

[Aspect 6]
A multi-layer cleaning sheet including a top sheet and a water retention sheet that holds a chemical solution,
The topsheet is composed of the cleaning sheet according to any one of aspects 1 to 5,
The multilayer cleaning sheet.

  When the plurality of first flap portions and the second flap portions are folded back, the water-retaining sheet applies the retained chemical liquid to the contaminated portion without passing through the top sheet, and the multi-layer cleaning sheet removes the dirt. The part can be moistened to make it easier to remove (hereinafter, may be referred to as “stained part wetting action”).

Hereinafter, the cleaning sheet of the present disclosure will be described in detail.
1 to 6 are diagrams for describing a cleaning sheet 1 according to one of the embodiments of the present disclosure (hereinafter, referred to as “first embodiment”). Specifically, FIG. 1 is a front view of the cleaning sheet 1. FIG. 2 is a rear view of the cleaning sheet 1. FIG. 3 is an enlarged perspective view of a region III in FIG. FIG. 4 is a diagram for explaining the reciprocating motion of the first flap portion 11 and the second flap portion 21 and corresponds to an enlarged perspective view of a region III in FIG. FIG. 5 is a diagram for explaining the cleaning sheet 1 after cleaning the surface to be cleaned. FIG. 6 is a diagram for explaining a state in which the cleaning sheet 1 is attached to the cleaning tool 101.

The cleaning sheet 1 according to the first embodiment has a plane direction P and a thickness direction T that are orthogonal to each other. Planar direction P are orthogonal to each other, wherein the first direction D _1, and a second direction D _2, the first direction D ₁ is provided with a one-way D _11, it is partitioned into the other direction D _12.
The first direction D ₁ and the second direction D ₂ correspond to the short direction and the long direction of the cleaning sheet 1 respectively, and as shown in FIG. ₁ (shorter direction) coincides with the shorter direction S of the cleaning sheet mounting portion 105 of the cleaning tool 101, and the second direction D ₂ (longitudinal direction) corresponds to the longitudinal direction L of the cleaning sheet mounting portion 105 of the cleaning tool 101. Attached and used to match.

The cleaning sheet 1 is made of a nonwoven fabric, has a first surface 3, and a second surface 5 opposite to the first surface 3, and includes a cleaning region CR that is a region for cleaning the surface to be cleaned. I have.
Both the first surface 3 and the second surface 5 can constitute a cleaning surface.

The cleaning sheet 1 includes a plurality of first flap portions 11 and a plurality of second flap portions 21 in the cleaning area CR.
Each of the plurality of first flap portions 11 includes a first end 13 and a first other end 15, a first fixed end 17 that linearly connects the first end 13 and the first other end 15, and a first end. 13 and a first free end 19 curved so as to protrude in a direction away from the first fixed end 17 with the first other end 15 as a starting point.

Similarly, each of the plurality of second flap portions 21 includes a second end 23 and a second other end 25, a second fixed end 27 that linearly connects the second end 23 and the second other end 25, The second free end 29 is curved so as to be convex in a direction away from the second fixed end 27 with the second end 23 and the second other end 25 as starting points.
Each of the plurality of first flap portion 11, protrudes in the first direction D ₁ of the one-way D _11, and, each of the plurality of second flap portion 21, in the other direction D ₁₂ in the first direction D ₁ It is protruding.

Cleaning sheet 1 extends in the second direction D _2, are spaced apart from each other in the first direction D _1, 7 column first flap portion group, specifically, a first flap portion first group 31, first flap section second group 33, first flap section third group 35, first flap section fourth group 37, first flap section fifth group 39, first flap section sixth group 41, first flap The seventh group 43 is provided.

  In each of the first flap portion first group 31 to the first flap portion seventh group 43, each of the plurality of first flap portions 11 and each of the plurality of second flap portions 21 project in opposite directions. So that they are adjacent to each other.

In the first direction D _1, it is arranged inwardly, are included in the first flap portion second group 33 to the first flap portion 6 group 41, a plurality of first flap portion 11 and a plurality of second flap portion The area of each of the plurality of first flap portions 11 and the plurality of second flap portions included in the first flap portion first group 31 and the first flap portion seventh group 43 are arranged outside. 21 is relatively smaller than each area.

By doing so, in the first direction D _1, it is arranged outward, included in the first flap portion first group 31 and the first flap portion seventh group 43, a plurality of first flap portion 11 and a plurality When each of the second flap portions 21 makes a relatively large reciprocating motion, it is easy to hold the enlarged dust linked body by winding the dust linked body or the like.

  Further, each of the plurality of first flap portions 11 and the plurality of second flap portions 21 included in the first flap portion second group 33 to the first flap portion sixth group 41 which are arranged inward, A plurality of first flap portions 11 and a plurality of second flap portions included in the first flap portion first group 31 and the first flap portion seventh group 43 which perform a relatively small reciprocating motion and are arranged outward. Dust left by the flap portion 21 can be captured.

Also, included in the first flap portion second group 33 to the first flap portion 6 group 41, a plurality of first flap portion 11, when the cleaning sheet 1 is moved in the first direction D ₁ of the one-way D ₁₁ In addition, the first flap unit first group 31 and the first flap unit seventh group 43 can capture the dirt left behind, and the plurality of second flap units 21 allow the cleaning sheet 1 to move in the first direction D ₁ . when moving in the other direction D _12, it can be first flap portion first group 31 and the first flap portion seventh group 43 captures the dust left behind.

Further, in each of the first flap portion first group 31 to the first flap portion seventh group 43, respectively of the first protruding in one direction D ₁₁ in the direction D _1, a plurality of first flap portion 11, a 1 projects in the other direction D ₁₂ in the direction D _1, respectively of the plurality of second flap portions 21 are arranged alternately in the second direction D _2. By doing so, each of the plurality of first flap portions 11 and each of the plurality of second flap portions 21 interfere with each other, and a small dust capturing action, a large dust trapping action, a dust linked body holding action, In addition, a dirt wiping action can be further exhibited.

  FIG. 3 shows the first flap portion 11 (first end 13, first other end 15, first fixed end 17, first free end 19, first movable region MR1, first opening 45), specifically. Specifically, the first flap portion 11a (first end 13a, first other end 15a, first fixed end 17a, first free end 19a, first movable region MR1a, first opening 45a), and A first flap portion 11c (first end 13c, first other end 15c, first fixed end portion 17c, first free end portion 19c, first movable region MR1c, first opening 45c), and second flap portion 21 ( The second end 23, the second other end 25, the second fixed end 27, the second free end 29, the second movable region MR2, the second opening 47), specifically, the second flap 21b (the second flap 21b). 2nd end 23b, second end 25b, second fixed end 27b, second free end 29b, second movable region MR b, second opening 47b), and second flap 21d (second end 23d, second end (not shown), second fixed end 27d, second free end 29d, second movable region MR2d). , A second opening 47d) are shown.

  As shown in FIG. 3, the adjacent first movable region MR1 of the first flap portion 11 and the second movable region MR2 of the second flap portion 21 overlap in the thickness direction T. Specifically, the first movable region MR1a of the first flap portion 11a and the second movable region MR2b of the second flap portion 21b overlap in the thickness direction T, and the second movable region MR2b of the second flap portion 21b The movable region MR2b and the first movable region MR1c of the first flap portion 11c overlap in the thickness direction T, and the first movable region MR1c of the first flap portion 11c and the first movable region MR1c of the second flap portion 21d. The two movable regions MR2d overlap in the thickness direction T.

  By doing so, the first flap portion 11 and the second flap portion 21 interfere with each other, so that a complicated movement can be performed, and a small dust taking action, a large dust entanglement action, and a dust connecting body can be achieved. The holding action and the dirt wiping action can be further exhibited.

  Further, as shown in FIG. 3, the adjacent first flap portion 11 itself and the second flap portion 21 themselves overlap in the thickness direction T. Specifically, the first flap portion 11a itself and the second flap portion 21b themselves overlap in the thickness direction T, and the second flap portion 21b itself and the first flap portion 11c themselves have a thickness The first flap portion 11c itself and the second flap portion 21d themselves overlap in the thickness direction T.

  By doing so, the first flap portion 11 and the second flap portion 21 interfere with each other, so that a complicated movement can be performed, and a small dust taking action, a large dust entanglement action, and a dust connecting body can be achieved. The holding action and the dirt wiping action can be further exhibited.

Further, as shown in FIG. 3, the first free end portion 19a of the first flap portion 11a does not intersect with the second free end portion 29b of the adjacent second flap portion 21b, and the first flap portion 11a The first fixed end portion 17a intersects with the second fixed end portion 27b of the adjacent second flap portion 21b.
Also, the first free end 19c of the first flap 11c does not intersect with the second free end 29d of the adjacent second flap 21d, and the first fixed end 17c of the first flap 11c is , And intersects with the second fixed end portion 27d of the adjacent second flap portion 21d.

  By doing so, the first flap portion 11a and the second flap portion 21b maintain the degree of freedom of the first free end portion 19a and the second free end portion 29b, which are the starting points when performing reciprocating motion, and By interfering with each other, they can make complicated movements, and can exhibit a small dust taking action, a large dust entanglement action, a dust linked body holding action, and a dirt wiping action. Further, the first flap portion 11c and the second flap portion 21d interfere with each other while maintaining the degrees of freedom of the first free end portion 19c and the second free end portion 29d, which are the starting points when reciprocating. By doing so, they can make complicated movements, and can exhibit a small dust taking action, a large dust entanglement action, a dust linked body holding action, and a dirt wiping action.

  In FIG. 3, the relationship between the first flap portion 11 and the second flap portion 21 constituting the first flap portion fourth group 37 has been described, but the first flap portion first group 31 to the first flap portion seventh group are described. Also in each of 43, the first flap portion 11 and the second flap portion 21 have a similar relationship.

As shown in FIG. 4, the cleaning sheet 1, when moved in the first direction D ₁ of the one-way D _11, first flap portion 11 (first flap portion 11a, and a first flap portion 11c) comprises first It is folded in the other direction D ₁₂ in one direction D _1. At that time, when the second flap portion 21 (second flap portion 21b, and a second flap portion 21d) has been folded in a first direction D ₁ of the one-way D _11, the first flap portion 11 (the As the first flap portion 11a and the first flap portion 11c) are folded, the second flap portion 21 (the second flap portion 21b and the second flap portion 21d) moves in the other direction D1 in the _first direction D1. It falls down toward _12, and it is easy to return to the original position.

Incidentally, since the first flap portion 11 (first flap portion 11a, and a first flap portion 11c) is folded in the other direction D ₁₂ in the first direction D _1, the first flap portion 11 (first flap portion 11a , And the first flap portion 11c), the first opening portion 45 (the first opening portion 45a and the first opening portion 45c) is formed, and the second flap portion 21 (the second flap portion 11c) is formed. 21b) is, by being folded in the first direction D ₁ of the one-way D _11, a location second flap portion 21 (second flap portion 21b) is present, the second opening 47 (second opening 47b and a second opening 47d) are formed.

The first opening 45 formed by folding the first flap portion 11 has the highest effect of taking in the small dust described above in the vicinity of the first fixed end portion 17 where the first flap portion 11 is turned back. because they tend to be, first opening 45 (first opening 45a, and the first opening 45 c), when moving the cleaning sheet 1 in the first direction D ₁ of the one-way D _11, the above-mentioned small trash The uptake effect tends to be high. The second opening 47 formed by folding the second flap portion 21 has the highest effect of taking in the small dust described above in the vicinity of the second fixed end portion 27 where the second flap portion 21 is turned back. because it tends to become, the second opening 47 (second opening 47b, and the second opening portion 47d), when moving the cleaning sheet 1 to the first other direction D ₁₂ in the direction D _1, the above-mentioned small trash The uptake effect tends to be high.

Although not shown, the cleaning sheet 1, when moved in the other direction D ₁₂ in the first direction D _1, the second flap portion 21 (second flap portion 21b, and a second flap portion 21d) is a first direction It is folded in one direction D ₁₁ of D _1. Accordingly, the first flap portion 11 (first flap portion 11a, and a first flap portion 11c) is falling toward the first direction D ₁ of the one-way D _11, it tends to return to its original position.

  As shown in FIG. 6, the first surface 3 of the cleaning sheet 1 is brought into contact with the surface to be cleaned, with the cleaning sheet mounting portion 105 of the cleaning tool 101 including the grip portion 103 and the cleaning sheet mounting portion 105. When the second surface 5 is attached so as to contact the cleaning sheet attaching portion 105 and the surface to be cleaned is cleaned, as shown in FIG. 5, a plurality of first flap portions 11 and a plurality of second flap portions are provided. Each of the plurality of first openings 45 holds the dust connecting body 107 by being wound thereon, and small dust (not shown) is passed through each of the plurality of first openings 45 and the plurality of second openings 47. Collected and small dust (not shown) is held between the cleaning sheet 1 and the cleaning sheet mounting portion 105.

  7 to 10 are views for explaining a multi-layer cleaning sheet 51 according to the second embodiment. Specifically, FIG. 7 is a front view of the multilayer cleaning sheet 51 according to the second embodiment. FIG. 8 is a rear view of the multilayer cleaning sheet 51. FIG. 9 is an end view of the multilayer cleaning sheet 51 taken along the line III-III in FIG. 7. FIG. 10 is an enlarged perspective view of a region X in FIG.

  The multilayer cleaning sheet 51 according to the second embodiment includes a first top sheet 53 constituting a cleaning surface, a water retention sheet 55 holding a chemical solution, and a second top sheet 57 constituting a cleaning surface in that order. Thus, both surfaces of the first top sheet 53 and the second top sheet 57 can be used for cleaning the surface to be cleaned.

  Each of the first top sheet 53 and the second top sheet 57 includes a plurality of first flap portions 11 and a plurality of second flap portions 21 in the cleaning region CR, similarly to the cleaning sheet 1 according to the first embodiment. Have.

  Each of the plurality of first flap portions 11 includes a first end 13 and a first other end 15, a first fixed end 17 that linearly connects the first end 13 and the first other end 15, and a first end. 13 and a first free end 19 curved so as to protrude in a direction away from the first fixed end 17 with the first other end 15 as a starting point.

Similarly, each of the plurality of second flap portions 21 includes a second end 23 and a second other end 25, a second fixed end 27 that linearly connects the second end 23 and the second other end 25, The second free end 29 is curved so as to be convex in a direction away from the second fixed end 27 with the second end 23 and the second other end 25 as starting points.
Since each of the first topsheet 53 and the second topsheet 57 is the same as the cleaning sheet 1 according to the first embodiment, detailed description will be omitted.

  As shown in FIG. 10, the first topsheet 53 is made of a nonwoven fabric, constitutes a first surface 59, and has a first topsheet first layer 63 containing hydrophilic fibers and hydrophobic fibers; And a first surface sheet second layer 65 containing hydrophilic fibers and hydrophobic fibers, wherein the ratio of the hydrophobic fibers of the first surface sheet second layer 65 is equal to the first surface sheet first layer. It is higher than the ratio of the hydrophobic fibers in the layer 63. By doing so, the first top sheet first layer 63 can spread the chemical solution on the surface to be cleaned and clean the surface to be cleaned, and the surface to be cleaned has a high friction in which dust, dirt, and the like exist. If so, the first flap portion 11 is folded back and the second layer 65 of the first topsheet, which contains a high proportion of hydrophobic fibers, comes in contact with the moist soiled portion and scrapes and removes the soiled portion. be able to. In addition, since the first surface sheet second layer 65 having a high ratio of the hydrophobic fiber is less likely to stick to the water retention sheet 55, the plurality of first flap portions 11 (and the plurality of second flap portions) are formed by the multilayer cleaning sheet. It becomes easy to bend when using 51.

  The second topsheet 57 also has a first topsheet (not shown) including hydrophilic fibers and hydrophobic fibers disposed on the side to be cleaned, and a hydrophilic layer disposed on the water retention sheet 55 side. Although it includes a second surface sheet second layer (not shown) containing fibers and hydrophobic fibers, it is the same as the first surface sheet 53, and therefore description thereof is omitted.

  The configuration of the cleaning sheet of the present disclosure is not particularly limited, and can be used as a cleaning sheet as it is, for example, as in the first embodiment. When the cleaning sheet of the present disclosure is used as it is, both the first surface and the second surface constitute a cleaning surface.

Further, the cleaning sheet of the present disclosure can be used as a constituent sheet constituting a multilayer cleaning sheet including a plurality of layers, particularly as a top sheet.
As the multi-layer cleaning sheet, a sheet obtained by laminating two or more of the above-described constituent sheets, for example, a first-layer constituent sheet and a second-layer constituent sheet, and The first flap portion and the plurality of second flap portions, and the plurality of first flap portions and the plurality of second flap portions included in the second layer constituent sheet do not coincide with the thickness direction of the multilayer cleaning sheet. As described above, for example, those laminated so as not to overlap are exemplified.

Examples of the multi-layer cleaning sheet include a sheet composed of two component sheets and a water retention sheet that holds a chemical solution disposed therebetween, and the component sheet and a liquid impermeable material such as a film. And a water retention sheet disposed therebetween. Further, as the multilayer cleaning sheet, a plurality of constituent sheets (for example, a plurality of constituent sheets having different shapes of a plurality of first flap portions and a plurality of second flap portions) and a plurality of constituent sheets And a water retention sheet disposed on one side.
The multi-layer cleaning sheet including the water retention sheet is preferable from the viewpoint of the above-described action of moistening the stained portion.

  Further, the multi-layer cleaning sheet may include an additional sheet, for example, a mesh sheet, between the constituent sheet and the water retention sheet. In addition, from the viewpoint of directly applying the chemical liquid held by the water retention sheet to dust, dirt, and the like existing on the surface to be cleaned, the constituent sheet and the water retention sheet are preferably adjacent to each other in the thickness direction of the cleaning sheet. .

  The nonwoven fabric constituting the cleaning sheet of the present disclosure is not particularly limited as long as it has a first surface on the side to be cleaned and a second surface opposite to the first surface. Examples thereof include spunlace nonwoven fabric, air-through nonwoven fabric, spunbonded nonwoven fabric, SMS nonwoven fabric, thermal bonded nonwoven fabric, point-bonded nonwoven fabric, melt blown nonwoven fabric, chemical bonded nonwoven fabric, air-laid nonwoven fabric, and the like.

The nonwoven fabric preferably contains a hydrophilic fiber and a hydrophobic fiber, and the hydrophilic fiber and the hydrophobic fiber are more preferably 5 to 45% by mass and 55 to 95% by mass, and still more preferably 20 to 30% by mass. % And 70 to 80% by weight, and even more preferably 23 to 28% by weight and 72 to 77% by weight. This makes it easier for the cleaning sheet to scrape solid dirt, and also makes it easier to collect hydrophilic liquid dirt and hydrophobic liquid dirt.
In the case where the nonwoven fabric is composed of two or three or more layers described later, the ratio of the hydrophilic fibers and the hydrophobic fibers means the ratio of the entire nonwoven fabric.

When the cleaning sheet of the present disclosure is used as a constituent sheet of a multi-layer cleaning sheet including a water retention sheet, the constituent sheet may be formed of a single layer, and may be formed of a plurality of layers. .
When the above-mentioned constituent sheet is composed of two or three or more layers, each of the first layer constituting the first surface and the second layer constituting the second surface is composed of a hydrophilic fiber. And the ratio of the hydrophobic fibers constituting the second layer is preferably higher than the ratio of the hydrophobic fibers constituting the first layer, more preferably from 1.00 to 2.0. 00 times higher, and more preferably 1.05 to 1.50 times higher, and even more preferably 1.10 to 1.20 times higher. By doing so, the ability of the first layer to spread the chemical solution held by the water retention sheet to the surface to be cleaned is relatively high, and the second layer is relatively excellent in scraping off the soiled portion. .

Examples of the hydrophilic fibers include cellulosic fibers, for example, pulp fibers, regenerated cellulose fibers, and semi-synthetic cellulose fibers. Examples of the regenerated cellulose fibers include rayon fibers, for example, viscose rayon obtained from viscose, polynosic and modal, cuprammonium rayon fibers obtained from a cuprammonium salt solution of cellulose (also referred to as “cupra”); And lyocell and Tencel, which are obtained by an organic solvent spinning method using an organic solvent which is a mixed solution of water and water and do not pass through a cellulose derivative.
Examples of the semi-synthetic cellulose fibers include acetate fibers, for example, triacetate fibers and diacetate fibers.

  Examples of the hydrophobic fibers include synthetic fibers such as heat-fusible fibers such as polyolefin-based polymers such as polyethylene or polypropylene; polyester-based polymers such as terephthalate-based polymers such as polyethylene terephthalate (PET) and polybutylene. Fibers formed from terephthalate, polypentylene terephthalate; polyamide-based polymers, for example, nylon 6 or nylon 6,6; acrylic-based polymers; polyacrylonitrile-based polymers; modified products thereof, or combinations thereof, and the like.

The water retention sheet is not particularly limited as long as it can hold a chemical solution, and any one used as a water retention sheet in the art can be adopted without limitation.For example, air-laid pulp, spunlaced nonwoven fabric, It can be composed of a pulp sheet, a sheet-like sponge, or the like.
The water retention sheet can include hydrophilic fibers to hold a chemical solution. Examples of the hydrophilic fiber include those similar to those described in the section of the topsheet. For example, the air-laid pulp can include the synthetic fibers described in the section of the topsheet and the hydrophilic fibers (for example, pulp fibers).
As the chemical liquid held by the water retention sheet, a chemical liquid known in the art can be adopted.

  The cleaning sheet of the present disclosure includes a plurality of first flap portions and a plurality of second flap portions in a cleaning area. Each of the plurality of first flap portions and the plurality of second flap portions is separated from one end and the other end, a linear fixed end connecting the one end and the other end, and the one end and the other end as starting points. It is not particularly limited as long as it is composed of a free end portion that is curved so as to be convex in the direction, and can have any shape.

  In each of the plurality of first flap portions and the plurality of second flap portions, the radius of curvature of the free end portion, which is farthest from the fixed end portion, is preferably 3.0 to 25.0 mm, more preferably. Is between 5.0 and 20.0 mm, and more preferably between 7.0 and 15.0 mm. By doing so, when using the cleaning sheet of the present disclosure, each of the plurality of first flap portions and the plurality of second flap portions is easily reciprocated.

FIG. 12 is a diagram for describing an example of the flap portion in the cleaning sheet of the present disclosure. The flap portion 301 shown in FIG. 12A has one end 303 and the other end 305, a fixed end 307 that linearly connects the one end 303 and the other end 305, and a fixed end starting from the one end 303 and the other end 305. curved to be a convex in a direction away from the part 307 is composed of a free end portion 309 has a free end portion 309 is semi-circular arc portion of the curvature radius R _1, and Kamata farthest portion 311, having a radius of curvature R _1.

The flap portion 301 shown in FIG. 12B has one end 303 and the other end 305, a fixed end 307 that linearly connects the one end 303 and the other end 305, and a fixed end starting from the one end 303 and the other end 305. curved to be a convex in a direction away from the part 307 is composed of a free end portion 309 has a free end portion 309 is elliptical section, and the farthest portion 311 has a radius of curvature R _2.

  The cleaning sheet of the present disclosure can include a plurality of first flap portions and a plurality of second flap portions having an arbitrary size, and the cleaning sheet has a plurality of first flap portions. In the first direction, it is preferable to include a first flap portion having a relatively small area disposed inward and a first flap portion having a relatively large area disposed outward. By doing so, when the first flap portion, which is disposed outside and has a relatively large area, makes a relatively large reciprocating motion, the garbage is enlarged by, for example, wrapping the garbage linked body. It becomes easier to hold the linked body. In addition, the first flap portion having a small area disposed inwardly performs a relatively small reciprocating motion, and catches dust left behind by the first flap portion having a large area disposed outwardly. be able to.

  Further, for the same reason, the cleaning sheet is disposed as a plurality of second flap portions in the first direction, a second flap portion having a relatively small area disposed inward in the first direction, and a plurality of second flap portions disposed outward. And a second flap portion having a relatively large area.

  In the cleaning sheet of the present disclosure, each of the plurality of first flap portions has a predetermined first movable region, and each of the plurality of second flap portions has a predetermined second movable region. The first movable region of the first flap portion and the second movable region of the second flap portion include a plurality of first flap portions and a plurality of second flap portions that are disposed adjacent to each other. It is preferable to include those overlapping in the thickness direction. By doing so, the cleaning sheet of the present disclosure can further exert the above-mentioned small dust taking-in action, large dust entanglement action, dust linked body holding action, and dirt wiping action.

  The cleaning sheet of the present disclosure is configured such that the first flap portion and the second flap portion are arranged adjacent to each other as a plurality of first flap portions and a plurality of second flap portions in the thickness direction of the cleaning sheet. It is preferable to include overlapping ones. By doing so, the cleaning sheet of the present disclosure can further exert the above-mentioned small dust taking-in action, large dust entanglement action, dust linked body holding action, and dirt wiping action.

  The cleaning sheet of the present disclosure includes a plurality of first flap portions and a plurality of second flap portions that are disposed adjacent to each other, and the free end of the first flap portion intersects with the free end portion of the second flap portion. Although not described, it is preferable that the fixed end of the first flap portion includes one that intersects with the fixed end of the second flap portion. By doing so, the cleaning sheet of the present disclosure can further exert the above-mentioned small dust taking-in action, large dust entanglement action, dust linked body holding action, and dirt wiping action.

DESCRIPTION OF SYMBOLS 1 Cleaning sheet 3 1st surface 5 2nd surface 11 1st flap part 13 1st end 15 1st other end 17 1st fixed end 19 1st free end 21 2nd flap 23 2nd one end 25 2nd other End 27 Second fixed end 29 Second free end 31 First flap section first group 33 First flap section second group 35 First flap section third group 37 First flap section fourth group 39 First flap section Fifth group 41 First flap section Sixth group 43 First flap section seventh group 45 First opening 47 Second opening 51 Multi-layer cleaning sheet 53 First top sheet 55 Water retention sheet 57 Second top sheet 59 First surface 61 second surface 63 first topsheet the first layer 65 first topsheet second layer CR cleaning region P planar direction D ₁ first direction D ₁₁ in one direction D ₁₂ other direction D ₂ second direction T thickness direction MR1 First movable area MR2 Second movable area L longitudinal direction S widthwise direction

Claims (6)

A cleaning sheet made of a nonwoven fabric, comprising: a first direction, a second direction, and a thickness direction that are orthogonal to each other, and a cleaning area,
The cleaning sheet includes, in the cleaning area, a plurality of first flap portions projecting in one direction in a first direction, and a plurality of second flap portions projecting in another direction in the first direction.
Each of the plurality of first flap portions and the plurality of second flap portions has one end and the other end, a fixed end connecting the one end and the other end, and the one end and the other end as starting points. A free end that is curved to be convex in a direction away from the fixed end,
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other,
The cleaning sheet.   The cleaning sheet has, in the first direction, a first flap portion having a relatively small area disposed inward as the plurality of first flap portions, and a relatively small area having a relatively small area disposed outside. A large first flap portion, wherein the plurality of second flap portions are arranged inward and have a relatively small area, and a second flap portion is disposed outward and have a relatively large area. The cleaning sheet according to claim 1, further comprising a second flap portion having a large size. Each of the plurality of first flap portions has a first movable region that is a maximum region where the first flap portion can exist when the first flap portion is folded at an arbitrary position, and the plurality of second flap portions are provided. Each of the flap portions has a second movable region that is a maximum region where the second flap portion can exist when the second flap portion is folded at an arbitrary position,
A first movable region of a first flap portion and a second movable region of a second flap portion as the plurality of first flap portions and the plurality of second flap portions, in which the cleaning sheet is disposed adjacently; And include those overlapping in the thickness direction,
The cleaning sheet according to claim 1.   As the plurality of first flap portions and the plurality of second flap portions, wherein the cleaning sheet is disposed adjacent to the first flap portion and the second flap portion, the first flap portion and the second flap portion overlap in the thickness direction. The cleaning sheet according to any one of claims 1 to 3, including a cleaning sheet.   The free end of the first flap portion is the free end of the second flap portion as the plurality of first flap portions and the plurality of second flap portions, wherein the cleaning sheet is disposed adjacent to the cleaning sheet. The cleaning according to any one of claims 1 to 4, wherein the fixed end of the first flap portion includes one that does not intersect with the fixed end portion of the second flap portion. Sheet. A multi-layer cleaning sheet including a top sheet and a water retention sheet that holds a chemical solution,
The topsheet is constituted by the cleaning sheet according to any one of claims 1 to 5,
The multilayer cleaning sheet.

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