JP6914228B2 - Cleaning sheet - Google Patents

Description

This disclosure relates to a cleaning sheet.

A cleaning sheet for cleaning dust, dust, etc. existing on the surface to be cleaned is known, and various improvements have been made from the viewpoint of improving cleanability.
For example, Patent Document 1 describes a cleaning sheet composed of a sheet structure forming a cleaning portion, wherein the sheet structure has 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 stretching the sheet raw material in a direction intersecting with the thickness direction of the sheet raw material and widening a plurality of cuts forming at least a part of the cut group. A cleaning sheet is described which is provided and is characterized in that at least a part of slit holes in the sheet material is located in the cleaning portion.

JP 2013-27682

In the cleaning sheet described in Patent Document 1, the cut group is provided to stretch the cleaning sheet in the direction intersecting the thickness direction thereof, and the cut group directly contributes to the cleanability of the cleaning sheet. It's not a thing.
Therefore, it is an object of the present disclosure to provide a cleaning sheet capable of taking in small dust and entwining large dust.

The present disclosers are cleaning sheets made of non-woven fabric having a first direction, a second direction and a thickness direction orthogonal to each other, and a cleaning area, and the cleaning sheet is the first in the cleaning area. A plurality of first flap portions projecting in one direction in one direction and a plurality of second flap portions projecting in the other direction in the first direction are provided, and the plurality of first flap portions and the plurality of plurality of first flap portions are provided. Each of the second flap portion is convex in the direction away from the fixed end portion starting from one end and the other end, the fixed end portion connecting the one end and the other end, and the one end and the other end. A cleaning sheet is found in which 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 of the present disclosure can take in small dust and can entangle large dust.

FIG. 1 is a front view of the 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 region III of 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 region III of FIG. FIG. 5 is a diagram for explaining a 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 multi-layer cleaning sheet 51 according to the second embodiment. FIG. 8 is a rear view of the multi-layer cleaning sheet 51. FIG. 9 is an end view of the multi-layer cleaning sheet 51 at the IX - IX end face of FIG. FIG. 10 is an enlarged perspective view of the region X of FIG. FIG. 11 is a diagram for explaining a movable region of the flap portion. FIG. 12 is a diagram for explaining an example of a flap portion in the cleaning sheet of the present disclosure.

[Definition]
・ "Area" of flap part
In the present specification, each area of the flap portion (the "first flap portion and / or the second flap portion" may be simply referred to as the "flap portion") is the free end portion and the fixed portion constituting the flap portion. It means the area of the section defined by the edges measured from the thickness direction of the cleaning sheet.

・ "Movable area" of the flap part
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 a “movable region”) refers to the flap portion. It means the maximum area where the flap portion can exist when the flap portion is folded back so as to be in contact with the remaining portion of the cleaning sheet one or more times at an arbitrary position.

FIG. 11 is a diagram for explaining a movable region of the flap portion, and the flap portion 201 has one end 203 and the other end 205, a fixed end portion 207 that linearly connects one end 203 and the other end 205, and one end. The free end 209 is composed of a free end 209 protruding in a direction away from the fixed end 207 starting from 203 and the other end 205, and the free end 209 is a straight line passing through one end 203 and the farthest 211. It is composed of a portion and a straight portion passing through the other end 205 and the farthest portion 211.

FIG. 11 also shows the flap portion 201a, the flap portion 201b, the flap portion 201c, and the flap portion 201d (when folded back at the fixed end portion 207) when the flap portion 201 is folded back once at different positions. The movable region 213 passes through an arc 215 having one end 203 as the center and a straight portion passing through the one end 203 and the farthest portion 211 as a radius, and the other end 205 centered on the other end 205 and the farthest portion 211. It is partitioned by an arc 217 having a straight portion as a radius.
The flap portion 201 shown in FIG. 11 is for explaining the movable region of the flap portion in the cleaning sheet of the present disclosure, and the flap portion 201 itself shown in FIG. 7 is the cleaning sheet of the present disclosure. Not applicable to flaps.

When the flap portion is a flap portion 301 including a free end portion 309 composed of a semicircular arc portion as shown in FIG. 12A, the movable region (not shown) of the flap portion 301 is a flap. The free end portion 309 of the portion 301 and the flap portion 301 are partitioned by the free end portion 309 when the flap portion 301 is folded back at the fixed end portion 307.
The same applies to the movable region when the flap portion is a flap portion having a free end portion composed of an arc portion less than a semi-circular arc portion.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A cleaning sheet made of a non-woven fabric, provided with a first direction, a second direction, a thickness direction, and a cleaning area that are orthogonal to each other.
The cleaning sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end that is curved so as to be convex in the 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 surface to be cleaned is cleaned, when the cleaning sheet is moved in one direction in the first direction, the first flap portion comes into contact with a portion having high friction (for example, a dirty portion). At that time, the first flap portion is folded back in the other direction with the first surface inside (hereinafter, "the flap portion is folded back in the other direction with the first surface inside" is simply ". The flap part is sometimes called "folded back (in the other direction)"), and a first opening is formed in the place where the first flap part was present on the cleaning sheet, and a small dust is collected. 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) (hereinafter, the flap portion is small). The action of taking in dust from the opening to the inside is sometimes called "small dust taking in action"). 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 non-woven fabric and removed.

Further, the cleaning sheet is moved in one direction in the first direction so that 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 so that the first flap portion returns in one direction. The first flap part can entangle large dust when performing the reciprocating movement with (hereinafter, the flap part entwining large dust by performing the reciprocating movement is called "large dust entanglement action". May be called). Since the cleaning sheet becomes thicker, the large dust entanglement action tends to be higher when the first flap portion is folded back in the other direction, that is, when the cleaning sheet is moved in one direction. be.

Further, when the surface to be cleaned is cleaned using the cleaning sheet, dust such as hair and dust existing on the surface to be cleaned is first caught in the peripheral part of the cleaning sheet and then collected in the peripheral part of the cleaning sheet. The debris that is not caught 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 dust such as hair and dust captured on the peripheral edge of the cleaning sheet and the dust such as hair and dust existing on the surface to be cleaned become larger. They tend to connect to form a rod-shaped debris connector. The first flap portion keeps holding the dust connecting body when performing the reciprocating motion (hereinafter, the action of the flap portion keeping holding the dust connecting body when performing the reciprocating motion is referred to as "dust connecting body holding action". May be referred to as). Since the thickness of the cleaning sheet is increased, the dust connecting body holding action tends to be higher when the first flap portion is folded back 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 back, 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 it has an uneven region including a convex region, a first opening, and a concave region that overlaps in the thickness direction, the cleaning sheet improves the wiping property of dirt (for example, sebum dirt). (Hereinafter, the process of forming an uneven region by folding back the flap portion and wiping off the dirt may be referred to as a "dirt wiping action"). Further, since the first flap portion is folded back, a new surface (clean surface) of the cleaning sheet is arranged on the surface to be cleaned, so that the dirt can be wiped off easily.

Focusing on the plurality of second flap portions, similar to the plurality of first flap portions, they have a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action. It tends to be higher when the cleaning sheet is moved in the other direction in the first direction.
From the above, the cleaning sheet has a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action when moved in either one direction or the other direction in the first direction. Can be shown.

[Aspect 2]
In the first direction, the cleaning sheet has a relatively small area of the first flap portion arranged inward and a relatively small area arranged outside as the plurality of first flap portions of the cleaning sheet. It is provided with a large first flap portion, and as the plurality of second flap portions, a second flap portion having a relatively small area arranged inside and a relatively area arranged outside. The cleaning sheet according to aspect 1, further comprising a large second flap portion of the above.

In the cleaning sheet, when the first flap portion and the second flap portion having a large area, which are arranged outward in the first direction, reciprocate, they catch dust existing on the surface to be cleaned, and then Even when the amount of dust captured by the cleaning sheet increases and a dust connecting body is formed, the first flap portion and the second flap portion having a large area can easily hold the dust connecting body. Further, the first flap portion and the second flap portion having a small area arranged inside capture the dust left behind by the first flap portion and the second flap portion having a large area arranged outside. can do.

[Aspect 3]
Each of the plurality of first flap portions has a first movable region which is the maximum region in which the first flap portion can exist when the first flap portion is folded back at an arbitrary position, and the plurality of second flap portions. Each of the flap portions has a second movable region, which is the maximum region in which the second flap portion can exist when the second flap portion is folded back at an arbitrary position.
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, a first movable region of the first flap portion and a second movable region of the second flap portion are arranged. Including those that overlap in the above thickness direction,
The cleaning sheet according to aspect 1 or 2.

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

[Aspect 4]
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, the first flap portion and the second flap portion overlap in the thickness direction. The cleaning sheet according to any one of aspects 1 to 3, including the 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 interacting with each other, they can make complicated movements, and can more exert the above-mentioned small dust taking-in action, large dust entanglement action, dust connecting body holding action, and dirt wiping action.

[Aspect 5]
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, the free end portion of the first flap portion is the free end portion of the second flap portion. The cleaning sheet according to any one of aspects 1 to 4, wherein the fixed end portion of the first flap portion intersects the fixed end portion of the second flap portion, although the cleaning sheet does not intersect with the fixed end 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. By interfering with each other while maintaining the degree of freedom of the free end, which is the starting point, they can move in a complicated manner, and the above-mentioned small dust intake action, large dust entanglement action, and dust connection It is possible to exert more body-retaining action and dirt-wiping action.

[Aspect 6]
A multi-layer cleaning sheet provided with a surface sheet and a water-retaining sheet for holding a chemical solution.
The surface sheet is composed of the cleaning sheet according to any one of aspects 1 to 5.
The above multi-layer cleaning sheet.

In the above-mentioned multi-layer cleaning sheet, when a plurality of first flap portions and second flap portions are folded back, the chemical solution held by the water retention sheet without passing through the surface sheet is applied to the soiled portion to become dirty. The portion can be moistened and easily removed (hereinafter, may be referred to as "dirty partial wetting action").

The cleaning sheet of the present disclosure will be described in detail below.
1 to 6 are views for explaining 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 region III of 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 region III of FIG. FIG. 5 is a diagram for explaining a 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 includes a plane direction P and a thickness direction T that are orthogonal to each other. The plane direction P includes a first direction D ₁ and a second direction D ₂ orthogonal to each other, and the first direction D ₁ is divided into one direction D ₁₁ and another direction D ₁₂ .
The first direction D ₁ and the second direction D ₂ coincide with the lateral direction and the longitudinal direction of the cleaning sheet 1, respectively, and as shown in FIG. 6, the cleaning sheet 1 has its first direction D. ₁ (short direction) coincides with the short direction S of the cleaning sheet mounting portion 105 of the cleaning tool 101, and its second direction D ₂ (longitudinal direction) is the longitudinal direction L of the cleaning sheet mounting portion 105 of the cleaning tool 101. Installed and used to match.

The cleaning sheet 1 is made of a non-woven fabric, has a first surface 3 and a second surface 5 on the opposite side of the first surface 3, and includes a cleaning area CR which is an area for cleaning the surface to be cleaned. There is.
Both the first surface 3 and the second surface 5 can form 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 has a first fixed end portion 17 and a first one end that linearly connect the first one end 13 and the first other end 15, the first end 13 and the first other end 15. It is composed of a first free end portion 19 that is curved so as to be convex in a direction away from the first fixed end portion 17 starting from the 13 and the first other end 15.

Similarly, each of the plurality of second flap portions 21 has a second fixed end portion 27 that linearly connects the second end 23 and the second other end 25, and the second end 23 and the second other end 25. It is composed of a second free end portion 29 that is curved so as to be convex in a direction away from the second fixed end portion 27, starting from the second one end 23 and the second other end 25.
Each of the plurality of first flap portions 11 projects in one direction D _{11 of the first direction D 1} , and each of the plurality of second flap portions 21 protrudes in the other direction D ₁₂ of _{the first direction D 1.} It is protruding.

The cleaning sheet 1 extends in the second direction D ₂ and is arranged apart from the first direction D _{1. A} group of first flaps in seven rows, specifically, a first group of first flaps. 31, 1st flap part 2nd group 33, 1st flap part 3rd group 35, 1st flap part 4th group 37, 1st flap part 5th group 39, 1st flap part 6th group 41, 1st flap The 7th group 43 of the part is provided.

In each of the first flap portions 1st group 31 to the 1st flap portions 7th 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. They are arranged adjacent to each other.

A plurality of first flap portions 11 and a plurality of second flap portions included in the first flap portion second group 33 to the first flap portion sixth group 41 arranged inward in the first direction D _1. Each area of 21 is included in a plurality of first flap portions 11 and a plurality of second flap portions, which are included in the first flap portion 1st group 31 and the 1st flap portion 7th group 43, which are arranged outward. It is relatively smaller than each area of 21.

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, the dust connecting body is involved, and the like, so that the enlarged dust connecting body can be easily held.

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, is A plurality of first flap portions 11 and a plurality of second flap portions included in the first flap portion 1st group 31 and the 1st flap portion 7th group 43, which perform a relatively small reciprocating motion and are arranged outward. The dust left behind by the flap portion 21 can be captured.

Further, when a plurality of first flap portions 11 included in the first flap portion second group 33 to the first flap portion sixth group 41 move the cleaning sheet 1 in one direction D _{11 of the first direction D 1.} In addition, the dust left behind by the first flap portion 1st group 31 and the 1st flap portion 7th group 43 can be captured, and the plurality of second flap portions 21 have the cleaning sheet 1 in the first direction D ₁ . When moving in the other direction D ₁₂ , dust left behind by the first flap portion 1st group 31 and the 1st flap portion 7th group 43 can be captured.

Further, in each of the first flap portion 1st group 31 to the 1st flap portion 7th group 43, each of the plurality of first flap portions 11 projecting in one direction D _{11 of the first direction D 1 and the first flap portion 11} Each of the plurality of second flap portions 21 projecting in the other direction D ₁₂ of the one direction D ₁ is alternately arranged 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 taking-in action, a large dust entanglement action, a dust connecting body holding action, and the like. And the dirt wiping action can be more exerted.

FIG. 3 shows the first flap portion 11 (first end 13, first end 15, first fixed end 17, first free end 19, first movable region MR1, first opening 45), concretely. 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 the first. 1 flap portion 11c (1st end 13c, 1st other end 15c, 1st fixed end 17c, 1st free end 19c, 1st movable region MR1c, 1st opening 45c) and 2nd flap 21 ( 2nd end 23, 2nd other end 25, 2nd fixed end 27, 2nd free end 29, 2nd movable region MR2, 2nd opening 47), specifically, 2nd flap 21b (2nd) 2 One end 23b, second other end 25b, second fixed end 27b, second free end 29b, second movable region MR2b, second opening 47b), and second flap 21d (second end 23d, first 2 The other end (not shown), the second fixed end 27d, the second free end 29d, the second movable region MR2d, and the 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 flap portion 21b is the second. 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 second flap portion 21d 2 The movable region MR2d overlaps with the thickness direction T.

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

Further, as shown in FIG. 3, the adjacent first flap portion 11 itself and the second flap portion 21 itself overlap in the thickness direction T. Specifically, the first flap portion 11a itself and the second flap portion 21b itself overlap in the thickness direction T, and the second flap portion 21b itself and the first flap portion 11c itself are thick. It overlaps in the longitudinal direction T, and the first flap portion 11c itself and the second flap portion 21d itself 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 complicated movements can be made, and a small dust taking action, a large dust entanglement action, and a dust connecting body can be performed. The holding action and the dirt wiping action can be more exerted.

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

By doing so, the first flap portion 11a and the second flap portion 21b mutually 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 the reciprocating motion. By interfering with each other, they can make complicated movements, and can more exert a small dust taking-in action, a large dust entanglement action, a dust connecting 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 degree of freedom of the first free end portion 19c and the second free end portion 29d, which are the starting points when performing the reciprocating motion. By interacting with each other, they can make complicated movements, and can more exert a small dust taking-in action, a large dust entanglement action, a dust connecting 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 have been described. In each of the 43, the first flap portion 11 and the second flap portion 21 have the same relationship.

As shown in FIG. 4, when the cleaning sheet 1 is moved in one direction D _{11 of the first direction D 1} , the first flap portion 11 (the first flap portion 11a and the first flap portion 11c) becomes the first. It is folded in one direction D _{1 and} the other direction D _12. At that time, if the second flap portion 21 (the second flap portion 21b and the second flap portion 21d) is folded in one direction D _{11 of the first direction D 1} , the first flap portion 11 (first flap portion 11 (first). The second flap portion 21 (the second flap portion 21b and the second flap portion 21d) moves in the other direction D of _{the first direction D 1 as the 1 flap portion 11a and the first flap portion 11c) are folded. It falls toward 12} , making it easier to return to its original position.

The first flap portion 11 (first flap portion 11a and first flap portion 11c) is folded in the other direction D _{12 of the first direction D 1} so that the first flap portion 11 (first flap portion 11a) is folded. , And the first flap portion 11c) was formed, a first opening 45 (first opening 45a, and a first opening 45c) was formed, and a second flap portion 21 (second flap portion) was formed. 21b) is folded in one direction D ₁₁ of the first direction D ₁ , so that the second opening 47 (second opening) is in the place where the second flap 21 (second flap 21b) was present. 47b and the second opening 47d) are formed.

The first opening 45 formed by folding the first flap portion 11 has the highest effect of taking in small dust as described above in the vicinity of the first fixed end portion 17, which is the folding starting point of the first flap portion 11. Therefore, the first opening 45 (the first opening 45a and the first opening 45c) has the above-mentioned small dust when the cleaning sheet 1 is moved in the one direction D _{11 of the first direction D 1.} The uptake effect tends to be high. Further, the second opening 47 formed by folding the second flap portion 21 has the highest effect of taking in small dust as described above in the vicinity of the second fixed end portion 27, which is the folding starting point of the second flap portion 21. The second opening 47 (the second opening 47b and the second opening 47d) has the above-mentioned small dust when the cleaning sheet 1 is moved in the other direction D _{12 of the first direction D 1.} The uptake effect tends to be high.

Although not shown, when the cleaning sheet 1 is moved in the other direction D _{12 of the first direction D 1} , the second flap portion 21 (the second flap portion 21b and the second flap portion 21d) is moved in the first direction. It is folded back in one direction D _{11 of D 1.} Along with this, the first flap portion 11 (the first flap portion 11a and the first flap portion 11c) falls toward the one direction D _{11 of the first direction D 1} and easily returns to the original position.

As shown in FIG. 6, the cleaning sheet 1 is brought into contact with the cleaning sheet mounting portion 105 of the cleaning tool 101 including the grip portion 103 and the cleaning sheet mounting portion 105, and the first surface 3 of the cleaning sheet 1 is in contact with the surface to be cleaned. When the surface to be cleaned is cleaned by mounting the second surface 5 so as to be in contact with the cleaning sheet mounting portion 105, the plurality of first flap portions 11 and the plurality of second flap portions are as shown in FIG. Each of the 21's holds the dust connecting body 107 by winding it, and small dust (not shown) is passed through each of the plurality of first openings 45 and the plurality of second openings 47. Collect and hold small debris (not shown) between the cleaning sheet 1 and the cleaning sheet mounting portion 105.

7 to 10 are views for explaining the multi-layer cleaning sheet 51 according to the second embodiment. Specifically, FIG. 7 is a front view of the multi-layer cleaning sheet 51 according to the second embodiment. FIG. 8 is a rear view of the multi-layer cleaning sheet 51. FIG. 9 is an end view of the multi-layer cleaning sheet 51 at the IX - IX end face of FIG. FIG. 10 is an enlarged perspective view of the region X of FIG.

The multi-layer cleaning sheet 51 according to the second embodiment includes a first surface sheet 53 forming a cleaning surface, a water retention sheet 55 for holding a chemical solution, and a second surface sheet 57 forming a cleaning surface in that order. Both sides of the first surface sheet 53 and the second surface sheet 57 can be used for cleaning the surface to be cleaned.

Each of the first surface sheet 53 and the second surface sheet 57 has a plurality of first flap portions 11 and a plurality of second flap portions 21 in the cleaning area CR, similarly to the cleaning sheet 1 according to the first embodiment. I have.

Each of the plurality of first flap portions 11 has a first fixed end portion 17 and a first one end that linearly connect the first one end 13 and the first other end 15, the first end 13 and the first other end 15. It is composed of a first free end portion 19 that is curved so as to be convex in a direction away from the first fixed end portion 17 starting from the 13 and the first other end 15.

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

As shown in FIG. 10, the first surface sheet 53 is composed of a non-woven fabric, constitutes a first surface 59, and has a first surface sheet first layer 63 containing hydrophilic fibers and hydrophobic fibers, and a second surface sheet. The ratio of the hydrophobic fibers of the first surface sheet second layer 65, which constitutes the surface 61 and includes the first surface sheet second layer 65 containing hydrophilic fibers and hydrophobic fibers, is the first surface sheet first. Higher than the proportion of hydrophobic fibers in layer 63. By doing so, the first layer 63 of the first surface sheet 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 high friction in which dust, dirt, etc. are present. If it has a portion, the first flap portion 11 is folded back, and the second layer 65 of the first surface sheet containing a high proportion of hydrophobic fibers comes into contact with the wet soiled portion and scrapes and removes the soiled portion. be able to. Further, since the second layer 65 of the first surface sheet having a high proportion of hydrophobic fibers 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 the multi-layer cleaning sheet. It becomes easy to fold back when using 51.

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

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

Further, the cleaning sheet of the present disclosure can be used as a constituent sheet constituting a multi-layer cleaning sheet including a plurality of layers, particularly as a surface sheet.
The multi-layer cleaning sheet includes a plurality of laminated sheets of the above-mentioned constituent sheets, for example, a first-layer constituent sheet and a second-layer constituent sheet included in the first-layer constituent sheet. 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 constituent sheet of the second layer do not match in the thickness direction of the multi-layer cleaning sheet. As described above, for example, those laminated so as not to overlap can be mentioned.

Examples of the multi-layer cleaning sheet include a sheet composed of two constituent sheets and a water-retaining sheet for holding a chemical solution arranged between them, and the constituent sheet and a liquid impermeable sheet such as a film are used. Examples thereof include a sex sheet and a water-retaining sheet arranged between them. Further, the multi-layer cleaning sheet includes a plurality of constituent sheets (for example, a plurality of constituent sheets having different shapes of the plurality of first flap portions and the plurality of second flap portions) and the plurality of constituent sheets. Examples include those including a water retention sheet arranged on one side.
A multi-layer cleaning sheet provided with a water-retaining sheet is preferable from the viewpoint of the above-mentioned dirt portion wetting action.

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. From the viewpoint of directly applying the chemical solution held by the water retention sheet to dust, dirt, etc. existing on the surface to be cleaned, it is preferable that the constituent sheet and the water retention sheet are adjacent to each other in the thickness direction of the cleaning sheet. ..

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

The non-woven fabric preferably contains hydrophilic fibers and hydrophobic fibers, and the hydrophilic fibers and hydrophobic fibers are more preferably 5 to 45% by mass and 55 to 95% by mass, still more preferably 20 to 30%. Included in proportions of% by weight and 70-80% by weight, and even more preferably 23-28% by weight and 72-77% by weight. By doing so, the cleaning sheet can easily scrape off solid stains and can easily collect hydrophilic liquid stains and hydrophobic liquid stains.
When the non-woven fabric is composed of two layers or three or more layers, which will be described later, the ratio of the hydrophilic fibers and the hydrophobic fibers described above means the ratio of the non-woven fabric as a whole.

When the cleaning sheet of the present disclosure is used as a constituent sheet of a multi-layer cleaning sheet including a water-retaining sheet, the constituent sheet may be composed of a single layer or may be composed of multiple layers. ..
When the constituent sheet is composed of two layers or three or more layers, each of the first layer constituting the first surface and the second layer constituting the second surface are hydrophilic fibers. And hydrophobic fibers are preferably contained, 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, and more preferably 1.00 to 2. It is 00 times higher, and even more preferably 1.05 to 1.50 times higher, and even more preferably 1.10 to 1.20 times higher. By doing so, the first layer has a relatively high ability to spread the chemical solution held by the water retention sheet to the surface to be cleaned, and the second layer has a relatively excellent scraping property of the dirty 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 fiber include viscose rayon obtained from viscose, polynosic and modal, and cuprammonium rayon fiber obtained from a cuprammonium rayon solution of cellulose (also referred to as “cupra”); an organic compound. Examples thereof include viscose 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.

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

The water-retaining sheet is not particularly limited as long as it can retain the chemical solution, and those used as water-retaining sheets in the art can be used without limitation. For example, air-laid pulp, spunlace non-woven fabric, and the like. It may be composed of a pulp sheet, a sheet-shaped sponge, or the like.
The water-retaining sheet may contain hydrophilic fibers to hold the chemical solution. Examples of the hydrophilic fiber include those similar to those described in the section on the surface sheet. For example, the air-laid pulp can include the synthetic fibers described in the section on the surface sheet and hydrophilic fibers (for example, pulp fibers).
As the chemical solution held by the water retention sheet, a chemical solution 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 the fixed end portion by starting from one end and the other end, a linear fixed end portion connecting the one end and the other end, and one end and the other end. It is not particularly limited as long as it is composed of a free end portion curved so as to be convex in the direction, and can have any shape.

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

FIG. 12 is a diagram for explaining an example of a flap portion in the cleaning sheet of the present disclosure. The flap portion 301 shown in FIG. 12A has a fixed end portion 307 that linearly connects one end 303 and the other end 305, one end 303 and the other end 305, and a fixed end portion 303 and the other end 305 as starting points. It is composed of a free end portion 309 that is curved so as to be convex in a direction away from the portion 307, the free end portion 309 is _{a semi-circular portion having a radius of curvature R 1} , and the farthest portion 311 is also. It has a radius of curvature R ₁ .

The flap portion 301 shown in FIG. 12B has a fixed end portion 307 that linearly connects one end 303 and the other end 305, one end 303 and the other end 305, and a fixed end portion 303 and the other end 305 as starting points. It is composed of a free end portion 309 that is curved so as to be convex in a direction away from the portion 307, the free end portion 309 is an elliptical arc portion, 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 can be used as a plurality of first flap portions. In the first direction, it is preferable to have a first flap portion having a relatively small area arranged inward and a first flap portion having a relatively large area arranged outward. By doing so, when the first flap portion having a relatively large area, which is arranged on the outside, makes a relatively large reciprocating motion, the dust connecting body is involved, and the dust is enlarged. It becomes easier to hold the connecting body. Further, the first flap portion having a small area arranged inside performs a relatively small reciprocating motion, and the first flap portion having a large area arranged outside captures dust left behind. be able to.

Further, for the same reason, the cleaning sheet is arranged as a plurality of second flap portions in the first direction with a second flap portion having a relatively small area and an outer side. It is preferable to have 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, each of the plurality of second flap portions has a predetermined second movable region, and the cleaning sheet has a predetermined second movable region. As the plurality of first flap portions and the plurality of second flap portions arranged adjacent to each other, the first movable region of the first flap portion and the second movable region of the second flap portion are formed on the cleaning sheet. It is preferable to include those that overlap in the thickness direction. By doing so, the cleaning sheet of the present disclosure can more exert the above-mentioned small dust taking-in action, large dust entanglement action, dust connecting body holding action, and dirt wiping action.

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

In the cleaning sheet of the present disclosure, as a plurality of first flap portions and a plurality of second flap portions arranged adjacent to each other, the free end portion of the first flap portion intersects the free end portion of the second flap portion. Although not, it is preferable to include a fixed end portion of the first flap portion that intersects the fixed end portion of the second flap portion. By doing so, the cleaning sheet of the present disclosure can more exert the above-mentioned small dust taking-in action, large dust entanglement action, dust connecting body holding action, and dirt wiping action.

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 end 25 2nd etc. End 27 2nd fixed end 29 2nd free end 31 1st flap part 1st group 33 1st flap part 2nd group 35 1st flap part 3rd group 37 1st flap part 4th group 39 1st flap part Group 5 41 1st flap 6th group 43 1st flap 7th group 45 1st opening 47 2nd opening 51 Multi-layer cleaning sheet 53 1st surface sheet 55 Water retention sheet 57 2nd surface sheet 59 1st Surface 61 Second surface 63 First surface sheet 1st layer 65 1st surface sheet 2nd layer CR Cleaning area P Plane direction D ₁ 1st direction D ₁₁ 1 direction D ₁₂ Other direction D ₂ 2nd direction T Thickness direction MR1 1st movable area MR2 2nd movable area L Longitudinal direction S Short direction

Claims (8)

A cleaning sheet made of a non-woven fabric, provided with a first direction, a second direction, a thickness direction, and a cleaning area that are orthogonal to each other.
The cleaning sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other .
In the first direction, the cleaning sheet has a relatively small area of the first flap portion arranged inward as the plurality of first flap portions, and a relatively small area of the cleaning sheet arranged outward. It is provided with a large first flap portion, and as the plurality of second flap portions, a second flap portion having a relatively small area arranged inside and a relatively area arranged outside. It has a large second flap and
The cleaning sheet. A cleaning sheet made of a non-woven fabric, provided with a first direction, a second direction, a thickness direction, and a cleaning area that are orthogonal to each other.
The cleaning sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other .
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, the first flap portion and the second flap portion overlap in the thickness direction. Including those that are
The cleaning sheet. A cleaning sheet made of a non-woven fabric, provided with a first direction, a second direction, a thickness direction, and a cleaning area that are orthogonal to each other.
The cleaning sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other .
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, the free end portion of the first flap portion is the free end portion of the second flap portion. The fixed end portion of the first flap portion intersects the fixed end portion of the second flap portion, although it does not intersect with the fixed end portion.
The cleaning sheet. Each of the plurality of first flap portions has a first movable region which is the maximum region in which the first flap portion can exist when the first flap portion is folded back at an arbitrary position, and the plurality of second flap portions. Each of the flap portions has a second movable region, which is the maximum region in which the second flap portion can exist when the second flap portion is folded back at an arbitrary position.
As the plurality of first flap portions and the plurality of second flap portions in which the cleaning sheets are arranged adjacent to each other, a first movable region of the first flap portion and a second movable region of the second flap portion are arranged. Including those overlapping in the thickness direction,
The cleaning sheet according to any one of claims 1 to 3. A multi-layer cleaning sheet provided with a surface sheet, a water-retaining sheet for holding a chemical solution, a first direction, a second direction, and a thickness direction orthogonal to each other, and a cleaning area.
The surface sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other.
In the first direction, the surface sheet has a relatively small area of the first flap portion arranged inward and a relatively small area arranged outward as the plurality of first flap portions. It is provided with a large first flap portion, and as the plurality of second flap portions, a second flap portion having a relatively small area arranged inside and a relatively area arranged outside. It has a large second flap and
The multi-layer cleaning sheet. A multi-layer cleaning sheet provided with a surface sheet, a water-retaining sheet for holding a chemical solution, a first direction, a second direction, and a thickness direction orthogonal to each other, and a cleaning area.
The surface sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other.
As the plurality of first flap portions and the plurality of second flap portions in which the surface sheets are arranged adjacent to each other, the first flap portion and the second flap portion overlap in the thickness direction. Including those that are
The multi-layer cleaning sheet. A multi-layer cleaning sheet provided with a surface sheet, a water-retaining sheet for holding a chemical solution, a first direction, a second direction, and a thickness direction orthogonal to each other, and a cleaning area.
The surface sheet includes a plurality of first flap portions projecting in one direction in the first direction and a plurality of second flap portions projecting in the other direction in the first direction in the cleaning area.
Each of the plurality of first flap portions and the plurality of second flap portions starts from one end and the other end, a fixed end portion connecting the one end and the other end, and the one end and the other end. It is composed of a free end portion that is curved so as to be convex in a direction away from the fixed end portion.
Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other.
As the plurality of first flap portions and the plurality of second flap portions in which the surface sheets are arranged adjacent to each other, the free end portion of the first flap portion is the free end portion of the second flap portion. The fixed end portion of the first flap portion intersects the fixed end portion of the second flap portion, although it does not intersect with the fixed end portion.
The multi-layer cleaning sheet. Each of the plurality of first flap portions has a first movable region which is the maximum region in which the first flap portion can exist when the first flap portion is folded back at an arbitrary position, and the plurality of second flap portions. Each of the flap portions has a second movable region, which is the maximum region in which the second flap portion can exist when the second flap portion is folded back at an arbitrary position.
As the plurality of first flap portions and the plurality of second flap portions in which the surface sheets are arranged adjacent to each other, a first movable region of the first flap portion and a second movable region of the second flap portion are arranged. Including those overlapping in the thickness direction,
The multi-layer cleaning sheet according to any one of claims 5 to 7.

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