WO2019240280A1

WO2019240280A1 - Cleaning sheet, and method for continuously producing material for cleaning sheet

Info

Publication number: WO2019240280A1
Application number: PCT/JP2019/023751
Authority: WO
Inventors: あゆか山道; 須田　朋和; 優佳眞鍋
Original assignee: ユニ・チャーム株式会社
Priority date: 2018-06-15
Filing date: 2019-06-14
Publication date: 2019-12-19
Also published as: CN111698935A; CN111698935B

Abstract

The purpose of this invention is to provide a cleaning sheet which can capture small dust and entangle large dust. This cleaning sheet has the following configuration. This cleaning sheet (1) made from nonwoven fabric comprises, in a cleaning region; a plurality of first flaps (11) which protrude one way (D₁₁) in a first direction (D₁), and a plurality of second flaps (21) which protrude the other way (D₁₂) in the first direction (D₁). Each of the plurality of first flaps (11) and the plurality of second flaps (21) comprise one end (13, 23), another end (15, 25), a fixed edge portion (17, 27) and a free edge (19, 29) which is curved so as to protrude in a direction moving away from the fixed edge portion (17, 27). Each of the plurality of first flaps (11) and each of the plurality of second flaps (21) are positioned adjoining one another.

Description

Cleaning sheet and method for continuously manufacturing cleaning sheet material

The present disclosure relates to a cleaning sheet and a method for continuously manufacturing a cleaning sheet material.

A cleaning sheet for cleaning dust, dust and the like present on the surface to be cleaned is known, and various improvements have been made from the viewpoint of improving cleaning properties.
For example, Patent Document 1 discloses a cleaning sheet including a sheet structure that forms a cleaning unit, and 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 in which a plurality of slit holes formed by widening a plurality of cuts constituting at least a part of the cut group by stretching the sheet raw material in a direction intersecting with the thickness direction of the sheet raw material is provided. A cleaning sheet is described that is provided and has at least a part of slit holes in the sheet material in the cleaning portion.

JP 2013-27682 A

In the cleaning sheet described in Patent Document 1, the cut group is provided to extend the cleaning sheet in a direction intersecting the thickness direction, and the cut group directly contributes to the cleaning property of the cleaning sheet. It is not a thing.
Accordingly, a first object of the present disclosure is to provide a cleaning sheet that can take in small dust and can entangle large dust.

In addition, the inventors of the present application form a flap portion that protrudes in the opposite direction on the cleaning sheet, so that during the cleaning, the flap portion is folded back in the direction opposite to the direction in which the cleaning sheet is moved. However, it has been found that the flap portion protruding in the opposite direction is folded back during the production of the cleaning sheet, which may cause a defect in the produced cleaning sheet.
In the cleaning sheet described in Patent Document 1, for example, when the slit hole illustrated in FIG. 9 is provided, the sheet material is winded when the cleaning sheet is continuously produced, particularly when continuously produced at a high speed. The sheet material is turned up at the slit hole, and there is a risk that a defect may occur in the manufactured cleaning sheet.

Therefore, the present disclosure provides a method for continuously manufacturing a cleaning sheet material that includes a flap portion that protrudes in one direction and the other direction in a first direction that is difficult to be folded during use and is easily folded during use. Second purpose.

Regarding the first object, 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 region, wherein the cleaning sheet is the above-mentioned The cleaning area 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 of the first direction, and the plurality of first flaps. And each of the plurality of second flap portions move away from the fixed end portion starting from the 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. Each of the plurality of first flap portions and each of the plurality of second flap portions are arranged adjacent to each other. I found a cleaning sheet.

With regard to the second object, the present disclosure is a method for continuously manufacturing a cleaning sheet material, and transports a strip-shaped nonwoven fabric having a plurality of material regions constituting the cleaning sheet material in a transport direction. However, each of the plurality of material regions is a plurality of first flap portions projecting in one direction orthogonal to the transport direction, each of which is not projecting in the transport direction, A plurality of second flap portions projecting in the other direction of the orthogonal direction, each of which forms a portion not projecting in the transport direction, the flap portion forming step, and the flap portion forming step A strip-shaped nonwoven fabric is cut into each of the plurality of material regions, and the plurality of cleaning sheet materials, each of which is in a first direction, a second direction, and a direction perpendicular to each other. A plurality of first flap portions having a thickness direction, projecting in one direction of the first direction corresponding to the one direction of the orthogonal direction and not projecting in one direction of the second direction corresponding to the transport direction; A plurality of second flap portions protruding in the other direction of the first direction corresponding to the other direction of the orthogonal direction and not protruding in one direction of the second direction corresponding to the transport direction. A method has been found that includes a cleaning sheet material forming step to be formed.

In relation to the first object, the cleaning sheet of the present disclosure can take in small dust and can take up large dust.
In relation to the second object, the method for continuously producing the cleaning sheet material of the present disclosure is a flap portion that protrudes in one direction and the other direction in the first direction, which is difficult to be folded back during manufacture and is easily folded back during use. The material for cleaning sheets provided with can be manufactured continuously.

FIG. 1 is a front view of a cleaning sheet 1 according to the A1 embodiment. FIG. 2 is a rear view of the cleaning sheet 1. FIG. 3 is an enlarged perspective view of region III in FIG. FIG. 4 is a view 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 view for explaining the cleaning sheet 1 after cleaning the surface to be cleaned. FIG. 6 is a view 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 A2 embodiment. FIG. 8 is a rear view of the multilayer cleaning sheet 51. 9 is an end view of the multilayer cleaning sheet 51 at the IX-IX end surface of 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 a flap portion in the cleaning sheet of the present disclosure. FIG. 13 is a view for explaining the manufacturing method according to the B1 embodiment. FIG. 14 is a view for explaining the manufacturing method according to the B1 embodiment. FIG. 15 is an enlarged view of region III in FIG. FIG. 16 is a diagram for describing an example of the flap portion in the cleaning sheet material formed by the manufacturing method of the present disclosure.

[Definition]
<Aspect A group>
・ Flap area
In this specification, each area of the flap part (the “first flap part and / or the second flap part” may be simply referred to as “flap part”) is defined as the free end part and the fixed part constituting the flap part. It means the area measured from the thickness direction of the cleaning sheet for the section defined by the end.

・ "Moveable area" of the flap
In this 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”) refers to the flap portion. It means the maximum area where a flap portion can exist when folded back to contact 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. The flap portion 201 includes one end 203 and the other end 205, a fixed end portion 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 portion 211. Part and a straight part passing through the other end 205 and the farthest part 211.

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

When the flap portion is a flap portion 301 having a free end portion 309 made up 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 free end portion 309 when the flap portion 301 is folded back at the fixed end portion 307 are partitioned.
The same applies to the movable region in the case where the flap portion is a flap portion including a free end portion constituted by an arc portion less than a semicircular arc portion.

<Aspect B group>
・ "Projection" in the conveyance direction of the flap
In this specification, the flap part “projects” in the transport direction means that the flap part is disposed between one end and the other end of the flap part on the upstream side in the transport direction. Means that the flap part is not “projecting” in the transport direction, and the flap part is free between the one end and the other end disposed upstream of the transport direction. It means having no end.

In this specification, “flap portion” means the first flap portion and / or the second flap portion, and “one end” means the first end of the first flap portion and / or the second flap portion. 2 means one end, and “the other end” means the first other end of the first flap part and / or the second other end of the second flap part.

・ Flap area
In this specification, the area of a flap part means the area which measured the division defined by the free end part and fixed end part which comprise a flap part from the thickness direction of the cleaning sheet.
In the present specification, the “free end” means the first free end of the first flap and / or the second free end of the second flap, and the “fixed end” The 1st fixed end part of 1 flap part and / or the 2nd fixed end part of the 2nd flap part are meant.

・ "Moveable area" of the flap
In this specification, the movable region of the flap portion means the maximum region where the flap portion can exist when the flap portion is folded back at one position or more times so as to contact the remaining portion of the cleaning sheet. To do.
In the present specification, the “movable area” means the first movable area of the first flap portion and / or the second movable area of the second flap.
Since a specific example is the same as that of FIG. 11 described in the aspect A group, the description is omitted.

<Aspect A group>
Specifically, the present disclosure relates to the following aspects A1 to A6.
[Aspect A1]
A cleaning sheet comprising a nonwoven fabric, comprising a first direction, a second direction and a thickness direction orthogonal to each other, and a cleaning region,
The cleaning sheet includes a plurality of first flap portions protruding in one direction of the first direction and a plurality of second flap portions protruding in the other direction of the first direction in the cleaning area,
Each of the plurality of first flap portions and the plurality of second flap portions includes 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 as starting points. It is composed of a free end that is curved so as 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 disposed adjacent to each other.
The 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 with high friction (for example, a dirty portion). In this case, 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” simply “ When the first flap portion of the cleaning sheet is present, a first opening is formed, and a small amount of dust is removed. From the opening, it can be taken into the interior (for example, between the cleaning sheet and the cleaning tool, and when the cleaning sheet is folded, between the folded cleaning sheets) (hereinafter, the flap portion is small) Action to take dust inside from the opening May be referred to as “small dust taking-in action”). In addition, since the said small dust taking-in effect is the highest in the vicinity of the fixed end of the first opening, it tends to be higher when the cleaning sheet is moved in one direction. In addition, small dust is taken in between the fibers of the nonwoven fabric and removed.

Also, the cleaning sheet is moved in one direction in the first direction, the first flap portion is folded 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 the reciprocating motion is performed, the first flap portion can entangle large dust (hereinafter, the flap portion reciprocates so that large dust is entangled is referred to as “large dust entanglement action”). May be called). In addition, since the thickness of the cleaning sheet increases, 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. is there.

Furthermore, when cleaning the surface to be cleaned using a cleaning sheet, dust such as hair, dust, etc. present on the surface to be cleaned is first captured at the periphery of the cleaning sheet and is collected at the periphery of the cleaning sheet. The dust that has not been captured 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, and the dust such as hair and dust present on the surface to be cleaned are collected at the peripheral edge of the cleaning sheet. There is a tendency to connect and form a rod-shaped refuse connector. The first flap portion continues to hold the dust connection body when performing the reciprocating motion (hereinafter, the operation of holding the dust connection body when the flap portion performs the reciprocating motion is referred to as “dust connection body holding action”. May be referred to as "." In addition, since the thickness of the cleaning sheet is increased, the dust connector 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 overlaps the folded first flap portion in the thickness direction. Since it has an uneven | corrugated area | region including a convex area | region, a 1st opening part, and the concave area | region which is an area | region which overlaps in the said thickness direction, the wiping property of dirt (for example, sebum dirt) by a cleaning sheet improves. (Hereinafter, forming the uneven region by folding the flap part and wiping off the dirt may be referred to as “dirt wiping action”). Moreover, since the new surface (surface which is not soiled) of a cleaning sheet will be arrange | positioned at the to-be-cleaned surface side by folding the 1st flap part, the wipeability of dirt improves.

Paying attention to the plurality of second flap portions, like the plurality of first flap portions, it has a small dust taking-in action, a large dust entanglement action, a dust linking body holding action, and a dirt wiping action. When the cleaning sheet is moved in the other direction of the first direction, it tends to be higher.
From the above, the cleaning sheet has a small dust taking-in action, a large dust entwining action, a dust linking body holding action, and a dirt wiping action when moved in one direction of the first direction and the other direction. Can show.

[Aspect A2]
In the first direction, the cleaning sheet is disposed inward as the plurality of first flap portions, and the first flap portion having a relatively small area and the outer surface having a relatively area. A large first flap portion, and a plurality of second flap portions arranged inwardly, with a relatively small area of the second flap portion, and being relatively outwardly arranged with a relatively large area. The cleaning sheet according to aspect 1, comprising a large second flap portion.

In the cleaning sheet, when the first flap portion and the second flap portion, which are arranged outward in the first direction and reciprocate, capture dust present on the surface to be cleaned, and Even when the amount of dust captured by the cleaning sheet is increased to form a dust connector, the first flap portion and the second flap portion having a large area can easily hold the dust connector. In addition, the first flap portion and the second flap portion, which are disposed inward and have a small area, capture dust left by the first flap portion and the second flap portion, which are disposed outward and have a large area. can do.

[Aspect A3]
Each of the plurality of first flap portions has a first movable region that is a maximum region in which the first flap portion can exist when the first flap portion is folded at an arbitrary position, and the plurality of second flap portions 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,
The first movable area of the first flap section and the second movable area of the second flap section as the plurality of first flap sections and the plurality of second flap sections, which are disposed adjacent to each other. Including those that overlap in the 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. Thus, they can move in a complicated manner, and the above-described small dust taking-in action, large dust entanglement action, dust linking body holding action, and dirt wiping action can be more exhibited.

[Aspect A4]
As the plurality of first flap portions and the plurality of second flap portions, which are disposed 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 above.

Since the cleaning sheet includes the predetermined first flap portion and the 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 combining them, they can move in a complicated manner, and the above-described small dust taking-in action, large dust entanglement action, dust connector holding action, and dirt wiping action can be further exhibited.

[Aspect A5]
As the plurality of first flap portions and the plurality of second flap portions, the cleaning sheet is disposed adjacently, and 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 cleaning sheet includes one that does not intersect with the first flap portion, but the fixed end portion of the first flap portion intersects the fixed end portion of the second flap portion. .

Since the said cleaning sheet contains a predetermined | prescribed 1st flap part and a 2nd flap part, when the cleaning sheet cleans a to-be-cleaned surface, the said 1st flap part and a 2nd flap part perform a reciprocating motion. While maintaining the degree of freedom of the free end that becomes the starting point, they can interfere with each other, making them move in a complex manner, and the above-mentioned small dust taking-in action, large dust entanglement action, dust connection A body holding action and a dirt wiping action can be exhibited more.

[Aspect A6]
A multi-layer cleaning sheet comprising a surface sheet and a water retention sheet for holding a chemical solution,
The top sheet 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 portion are folded, the multi-layer cleaning sheet applies a chemical solution held by the water retaining sheet to the dirty portion without passing through the surface sheet. The portion can be moistened to facilitate removal (hereinafter sometimes referred to as “soil partial wetting action”).

<Aspect B group>
Specifically, the present disclosure relates to the following aspects B1 to B4.
[Aspect B1]
A method for continuously producing cleaning sheet materials,
While conveying the strip-shaped nonwoven fabric having a plurality of material regions constituting the cleaning sheet material in the conveyance direction, each of the plurality of material regions protrudes in one direction orthogonal to the conveyance direction. A plurality of first flap portions, each not projecting in the transport direction, and a plurality of second flap portions projecting in the other direction of the orthogonal direction, each of which A flap forming step for forming a non-projecting one in the conveying direction;
The strip-shaped nonwoven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and is a plurality of the cleaning sheet materials, each of which is in a first direction and a second direction orthogonal to each other. A plurality of first flap portions having a thickness direction and projecting in one direction of the first direction corresponding to the one direction of the orthogonal direction and not projecting in one direction of the second direction corresponding to the transport direction And a plurality of second flap portions protruding in the other direction of the first direction corresponding to the other direction of the orthogonal direction and not protruding in one direction of the second direction corresponding to the conveying direction. Forming a cleaning sheet for material forming step,
Including the above method.

In the manufacturing method described above, in order to form a plurality of first flap portions and a plurality of second flap portions in each of a plurality of material regions of the strip-shaped nonwoven fabric constituting the cleaning sheet material, In manufacturing, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back.
Further, the cleaning sheet material (cleaning sheet) manufactured by the above manufacturing method protrudes in one direction in the first direction, and protrudes in the other direction in the first direction. When the cleaning sheet is reciprocated in the first direction during cleaning, the plurality of first flap portions and the plurality of second flap portions are arranged in the cleaning direction. You can move to the other side and pick up trash.

[Aspect B2]
In the flap portion forming step, the plurality of first flap portions are arranged such that the downstream end portions thereof are arranged in the orthogonal direction rather than the upstream end portion. The plurality of first flap portions and the plurality of second portions are arranged such that the downstream end portions of the second flap portions are disposed in the other direction of the orthogonal direction with respect to the upstream end portion. The method according to aspect 1, wherein the flap portion is formed.

In the manufacturing method, in the flap portion forming step, the upstream end portion and the downstream end portion of each of the plurality of first flap portions and the plurality of second flap portions are formed at predetermined positions. When manufacturing the material for use, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back.

[Aspect B3]
In the flap part forming step, each of the plurality of first flap parts and the plurality of second flap parts is formed by cutting so as not to penetrate each of the plurality of material regions. The method described.

In the above manufacturing method, each of the plurality of first flap portions and the plurality of second flap portions is formed by cutting so as not to penetrate each of the plurality of material regions (so-called half cut). In manufacturing, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back.

On the other hand, when using the cleaning sheet, the first flap portion and the second flap portion are separated from the portion that has been half-cut by contact with the highly frictional dirt portion of the surface to be cleaned, etc. When the is reciprocated in the first direction, the plurality of first flap portions and the plurality of second flap portions move to the opposite side to the cleaning direction, and dust can be entangled.

[Aspect B4]
Any of the aspects 1 to 3, wherein, in the flap portion forming step, each of the plurality of first flap portions and the plurality of second flap portions is formed by intermittently cutting each of the plurality of material regions. The method according to claim 1.

In the manufacturing method described above, each of the plurality of first flap portions and the plurality of second flap portions is formed by intermittently cutting each of the plurality of material regions. Specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back.

On the other hand, when using the cleaning sheet, the first flap portion and the second flap portion are separated from the portion to be cleaned, such as coming into contact with a highly contaminated dirty portion, and the intermittently cut portion is separated. When the cleaning sheet is reciprocated in the first direction, the plurality of first flap portions and the plurality of second flap portions move to the side opposite to the cleaning direction, and the dust can be entangled.

The cleaning sheet of the present disclosure will be described in detail below.
<Aspect A group>
1 to 6 are diagrams for explaining a cleaning sheet 1 according to one of the embodiments of the present disclosure (hereinafter referred to as “first A1 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 in FIG. FIG. 4 is a view 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 view for explaining the cleaning sheet 1 after cleaning the surface to be cleaned. FIG. 6 is a view 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 A1 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 that are orthogonal to each other, and the first direction D ₁ includes a first direction one direction D ₁₁ , a first direction other direction D _12, and the like. It is divided into.
The first direction D ₁ and the second direction D _2, respectively, consistent with the short-side direction and the longitudinal direction of the cleaning sheet 1, and as shown in FIG. 6, the cleaning sheet 1, the first direction D ₁ (short direction) coincides with the short direction S of the cleaning sheet attaching portion 105 of the cleaning tool 101, and the second direction D ₂ (longitudinal direction) thereof is the longitudinal direction L of the cleaning sheet attaching portion 105 of the cleaning tool 101. Installed and used to match.

The cleaning sheet 1 is composed 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. Yes.
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 region 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 portion 17 that linearly connects the first end 13 and the first other end 15, and a first end. 13 and the first other end 15, and a first free end 19 that is curved so as to protrude in a direction away from the first fixed end 17.

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

The cleaning sheet 1 extends in the second direction D ₂ and is arranged in the first direction D _{1 so as} to be spaced apart from each other. The seven rows of first flap portions, specifically, the first flap portion first group. 31, first flap portion second group 33, first flap portion third group 35, first flap portion fourth group 37, first flap portion fifth group 39, first flap portion sixth group 41, first flap A 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 protrude in opposite directions. Are arranged 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 Each area of 21 includes 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 are disposed 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 performs a relatively large reciprocating motion, it becomes easy to hold the enlarged dust coupled body by winding the dust coupled body or the like.

Furthermore, 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 disposed 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 that perform a relatively small reciprocating motion and are disposed outward. The garbage left by the flap part 21 can be captured.

Further, when the 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 the first direction D ₁₁ , 1 flap portion can first group 31 and the first flap portion seventh group 43 captures the dust left behind, and a plurality of second flap portion 21, moves the cleaning sheet 1 in the first direction the other direction D ₁₂ In doing so, it is possible to capture the dust left by the first flap portion first group 31 and the first flap portion seventh group 43.

Further, in each of the first flap portion first group 31 to the first flap portion seventh group 43, and protrudes in the first direction one-way D _11, respectively of the plurality of first flap portion 11, the first direction other protrudes in the direction D _12, 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, small dust taking-in action, large dust entanglement action, dust connector holding action, And the dirt wiping action can be exhibited more.

FIG. 3 shows the first flap 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 (the first end 13a, the first other end 15a, the first fixed end portion 17a, the first free end portion 19a, the first movable region MR1a, the first opening 45a), and the first 1 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 ( Second end 23, second other end 25, second fixed end 27, second free end 29, second movable region MR2, second opening 47), specifically, second flap portion 21b (second 2 one end 23b, 2nd other end 25b, 2nd fixed end 27b, 2nd free end 29b, 2nd movable field M 2b, second opening 47b), second flap 21d (second end 23d, second other end (not shown)), second fixed end 27d, second free end 29d, second movable region MR2d. , Second opening 47d) is shown.

As shown in FIG. 3, the adjacent first movable region MR1 of the first flap portion 11 and 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 has a second second region. 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 The two movable regions MR2d overlap in the thickness direction T.

By doing so, the 1st flap part 11 and the 2nd flap part 21 mutually interfere, and it can perform a complicated movement, a small dust taking-in effect, a large dust entanglement effect, a dust connection object A holding action and a dirt wiping action can be exhibited more.

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

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

By doing so, while maintaining the degree of freedom of the first free end 19a and the second free end 29b, the first flap portion 11a and the second flap portion 21b start when reciprocating. By interfering with each other, they can move in a complicated manner, and can exhibit a small dust taking-in action, a large dust entanglement action, a dust connector 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 starting points when reciprocating. By combining them, they can move in a complicated manner, and can exhibit a small dust taking action, a large dust entanglement action, a dust connector 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 1st flap part 11 and the 2nd flap part 21 have the same relationship.

As shown in FIG. 4, when the cleaning sheet 1 is moved in the first direction one direction D ₁₁ , the first flap portion 11 (the first flap portion 11 a and the first flap portion 11 c) It folded in the direction D _12. At that time, the second flap portion 21 (second flap portion 21b, and a second flap portion 21d) is, when unfolded in the first direction one-way D _11, the first flap portion 11 (first flap portion 11a, and the first flap portion 11c) is fit for being folded, the second flap portion 21 (second flap portion 21b, and a second flap portion 21d) is falling toward the first direction other direction D _12, It becomes easy to return to the original position.

The first flap portion 11 (first flap portion 11a, and a first flap portion 11c) is by being folded in a first direction the other direction D _12, first flap portion 11 (first flap portion 11a, and the The first opening 45 (the first opening 45a and the first opening 45c) is formed at the place where the 1 flap portion 11c) was present, and the second flap portion 21 (the second flap portion 21b) was formed. , by being folded in a first direction 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 Part 47d) is formed.

Note that the first opening 45 formed by folding the first flap portion 11 has the above-described action of taking up the small dust most in the vicinity of the first fixed end portion 17 that is the folding start point of the first flap portion 11. because 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 one-way D _11, the small dust uptake action described above Tend to be higher. In addition, the second opening 47 formed by folding the second flap portion 21 has the highest effect of taking up the above-mentioned small dust in the vicinity of the second fixed end portion 27 that is the folding start point of the second flap portion 21. because it tends to become, the second opening 47 (second opening 47b, and the second opening portion 47d), when moving the cleaning sheet 1 in the first direction other direction D _12, the small dust uptake action described above Tend to be higher.

Although not shown, the cleaning sheet 1, when moved in a first direction the other direction D _12, the second flap portion 21 (second flap portion 21b, and a second flap portion 21d) is, the first direction one-way D Wraps to ₁₁ . Accordingly, the first flap portion 11 (first flap portion 11a, and a first flap portion 11c) is falling toward the first direction 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 contacts 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. As shown in FIG. 5, when the second surface 5 is attached so that the second surface 5 is in contact with the cleaning sheet attaching portion 105 and the surface to be cleaned is cleaned, a plurality of first flap portions 11 and a plurality of second flap portions are obtained. 21 holds the dust linking body 107 by winding it, and holds small dust (not shown) through each of the plurality of first openings 45 and the plurality of second openings 47. Collecting and holding small dust (not shown) between the cleaning sheet 1 and the cleaning sheet mounting portion 105.

7 to 10 are views for explaining the multilayer cleaning sheet 51 according to the second embodiment A2. Specifically, FIG. 7 is a front view of the multilayer cleaning sheet 51 according to the A2 embodiment. FIG. 8 is a rear view of the multilayer cleaning sheet 51. 9 is an end view of the multilayer cleaning sheet 51 at the IX-IX end surface of FIG. 10 is an enlarged perspective view of a region X in FIG.

The multilayer cleaning sheet 51 according to the A2 embodiment includes a first surface sheet 53 that constitutes a cleaning surface, a water retention sheet 55 that holds a chemical solution, and a second surface sheet 57 that constitutes a cleaning surface in that order. Therefore, both surfaces 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 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 A1 embodiment. I 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 portion 17 that linearly connects the first end 13 and the first other end 15, and a first end. 13 and the first other end 15, and a first free end 19 that is curved so as to protrude in a direction away from the first fixed end 17.

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 portion 27 that linearly connects the second end 23 and the second other end 25, The second free end portion 29 is curved so as to be convex in a direction away from the second fixed end portion 27 with the second end 23 and the second other end 25 as starting points.
Since each of the 1st surface sheet 53 and the 2nd surface sheet 57 is the same as the cleaning sheet 1 according to A1 embodiment, detailed description is abbreviate | omitted.

As FIG. 10 shows, the 1st surface sheet 53 is comprised from a nonwoven fabric, and while comprising the 1st surface 59, the 1st surface sheet 1st layer 63 containing a hydrophilic fiber and hydrophobic fiber, and 2nd The first surface sheet second layer 65 including the surface 61 and including hydrophilic fibers and hydrophobic fibers, and the ratio of the hydrophobic fibers of the first surface sheet second layer 65 is the first surface sheet first. It is higher than the ratio of the hydrophobic fibers of the layer 63. By doing so, the 1st surface sheet 1st layer 63 can spread a chemical | medical solution to a to-be-cleaned surface, can clean a to-be-cleaned surface, and the to-be-cleaned surface has high friction in which dust, dirt, etc. exist In the case of having a portion, the first flap portion 11 is folded back, and the first surface sheet second layer 65 containing hydrophobic fibers at a high ratio comes into contact with the wet dirty portion, and the dirty portion is scraped and removed. be able to. Moreover, since the 1st surface sheet 2nd layer 65 with a high ratio of hydrophobic fiber becomes difficult to stick to the water retention sheet | seat 55, several 1st flap parts 11 (and several 2nd flap parts) are multilayer cleaning sheets. It is easy to be folded when 51 is used.

The second surface sheet 57 is also disposed on the surface to be cleaned, the second surface sheet first layer (not shown) including hydrophilic fibers and hydrophobic fibers, and the hydrophilic surface disposed on the water retention sheet 55 side. The second surface sheet second layer (not shown) including fibers and hydrophobic fibers is included, but since it is the same as the first surface sheet 53, 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 A1 embodiment. In addition, when using the cleaning sheet of this indication as it is, both the 1st surface and the 2nd surface comprise a cleaning surface.

Moreover, the cleaning sheet of this indication can be used as a surface sheet especially as a structural sheet which comprises the multilayer cleaning sheet containing a some layer.
As the multilayer cleaning sheet, a laminate of two or more of the above-described configuration sheets, for example, a first-layer configuration sheet and a second-layer configuration sheet are included in the first-layer configuration 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 second-layer constituent sheet do not coincide with the thickness direction of the multilayer cleaning sheet. Thus, for example, those stacked so as not to overlap can be mentioned.

Examples of the multilayer cleaning sheet include those composed of two component sheets and a water retaining sheet that holds a chemical solution disposed between them, and the component sheet and a liquid impervious film or the like. The thing comprised from a property sheet | seat and the water retention sheet | seat arrange | positioned among them is mentioned. Furthermore, as the multilayer cleaning sheet, a plurality of component sheets (for example, a plurality of component sheets having different shapes of the plurality of first flap portions and the plurality of second flap portions), and the plurality of component sheets The thing containing the water retention sheet | seat arrange | positioned at one side is mentioned.
A multilayer cleaning sheet provided with a water retention sheet is preferable from the viewpoint of the above-described dirt partial wetting action.

Further, the multilayer 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 retained by the water retention sheet to dust, dirt, etc. present on the surface to be cleaned, the component 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 surface to be cleaned side and a second surface on the opposite side of the first surface, and is used as a cleaning sheet in this technical field. Examples thereof include spunlace nonwoven fabric, air-through nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, thermal bond nonwoven fabric, point bond nonwoven fabric, meltblown nonwoven fabric, chemical bond nonwoven fabric, airlaid nonwoven fabric and the like.

The nonwoven fabric preferably contains hydrophilic fibers and hydrophobic fibers, and more preferably 5 to 45% by mass and 55 to 95% by mass, and still more preferably 20 to 30%, of hydrophilic fibers and hydrophobic fibers. And in a ratio of 23 to 28% by weight and 72 to 77% by weight. By doing so, it becomes easy for the cleaning sheet to scrape solid dirt, and it becomes easy to collect hydrophilic liquid dirt and hydrophobic liquid dirt.
In addition, when the said nonwoven fabric is comprised from the multilayer of 2 layers or 3 layers or more mentioned later, the ratio of the above-mentioned hydrophilic fiber and hydrophobic fiber means the ratio as the whole nonwoven fabric.

When the cleaning sheet of the present disclosure is used as a constituent sheet of a multilayer cleaning sheet including a water retention sheet, the constituent sheet may be composed of a single layer and may be composed of a multilayer. .
When the composition 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 is 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. 00 times higher, and more preferably 1.05-1.50 times higher, and even more preferably 1.10-1.20 times higher. By doing so, the ability of the first layer to spread the chemical liquid retained by the water retention sheet on the surface to be cleaned is relatively high, and the second layer is relatively excellent in the scraping property of the dirty portion. .

Examples of the hydrophilic fibers include cellulosic fibers such as pulp fibers, regenerated cellulose fibers, and semi-synthetic cellulose fibers. Examples of the regenerated cellulose fibers include rayon fibers such as viscose rayon obtained from viscose, polynosic and modal, copper ammonia rayon fiber obtained from a copper ammonia salt solution of cellulose (also referred to as “cupra”); organic compound 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 does not pass through a cellulose derivative.
Examples of the semi-synthetic cellulose fibers include acetate fibers such as triacetate fibers and diacetate fibers.

Examples of the hydrophobic fiber include synthetic fibers such as heat-fusible 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 fibers formed from terephthalate, polypentylene terephthalate; polyamide-based polymers such as nylon 6 or nylon 6,6; acrylic polymers; polyacrylonitrile-based polymers; or modified products thereof, or combinations thereof.

The water-retaining sheet is not particularly limited as long as it can retain a chemical solution, and any one used as a water-retaining sheet in the technical field can be employed without limitation, for example, airlaid pulp, spunlace nonwoven fabric, A pulp sheet, a sheet-like sponge, or the like can be used.
The water retention sheet can contain hydrophilic fibers in order to retain the chemical solution. Examples of the hydrophilic fiber include the same fibers as those described for the surface sheet. For example, the airlaid pulp can include the synthetic fiber described in the section of the surface sheet and hydrophilic fibers (for example, pulp fibers).
As the chemical liquid retained 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 the cleaning area. Each of the plurality of first flap portions and the plurality of second flap portions moves away from the fixed end portion with 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 as a starting point. If it is comprised from the free end part curved so that it may become convex in a direction, it will not restrict | limit in particular, It can have arbitrary shapes.

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, the farthest portion farthest from the fixed end portion, is preferably 3.0 to 25.0 mm, more preferably Is from 5.0 to 20.0 mm, and more preferably from 7.0 to 15.0 mm. By doing so, when using the cleaning sheet of this indication, each of a plurality of 1st flap parts and a plurality of 2nd flap parts becomes easy to reciprocate.

FIG. 12 is a diagram for describing an example of a flap portion in the cleaning sheet of the present disclosure. 12A includes a first 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 that starts 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 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 with the one end 303 and the other end 305 as starting points. 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 is used as 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 relatively large reciprocating motion of the first flap portion, which is disposed on the outside, has a relatively large reciprocating motion, the dust that has become enlarged due to the inclusion of the dust connector, etc. It becomes easy to hold the connected body. In addition, the first flap portion with a small area disposed inward performs a relatively small reciprocating motion, and captures dust left by the first flap portion with a large area disposed outward. be able to.

For the same reason, the cleaning sheet is arranged as a plurality of second flap portions in the first direction, the second flap portion having a relatively small area, and the outer portion. The second flap portion having a relatively large area is preferable.

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 The first movable area of the first flap section and the second movable area of the second flap section as the plurality of first flap sections and the plurality of second flap sections, which are arranged adjacent to each other, It is preferable to include those that overlap in the thickness direction. By doing so, the cleaning sheet of this indication can exhibit the above-mentioned small dust taking-in effect, a large dust entanglement effect, a dust linking body maintenance effect, and a dirt wiping effect.

In the cleaning sheet of the present disclosure, as the plurality of first flap portions and the plurality of second flap portions that are 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 those that overlap. By doing so, the cleaning sheet of this indication can exhibit the above-mentioned small dust taking-in effect, a large dust entanglement effect, a dust linking body maintenance effect, and a dirt wiping effect.

As for the cleaning sheet of this indication, the free end part of the 1st flap part intersects the free end part of the 2nd flap part as a plurality of 1st flap parts and a plurality of 2nd flap parts which are arranged adjacently However, it is preferable that the fixed end portion of the first flap portion includes one that intersects the fixed end portion of the second flap portion. By doing so, the cleaning sheet of this indication can exhibit the above-mentioned small dust taking-in effect, a large dust entanglement effect, a dust linking body maintenance effect, and a dirt wiping effect.

<Aspect B group>
The method for continuously producing the cleaning sheet material of the present disclosure (hereinafter, simply referred to as “manufacturing method”) includes the following steps.
-While conveying the strip-shaped nonwoven fabric having a plurality of material regions constituting the cleaning sheet material in the conveyance direction, each of the plurality of material regions protrudes in one direction orthogonal to the conveyance direction. A plurality of first flap portions, each of which does not protrude in the transport direction, and a plurality of second flap portions that protrude in the other direction of the orthogonal direction, each of which Flap portion forming step for forming a portion that does not protrude in the transport direction (hereinafter sometimes referred to as a “flap portion forming step”)

-The said strip-shaped nonwoven fabric which passed through the said flap part formation step is cut | disconnected to each of the said several material area | region, It is the said several material for cleaning sheets, and each of them is the 1st direction orthogonal to each other, 2nd A plurality of first flaps having a direction and a thickness direction, projecting in one direction of the first direction corresponding to the one direction of the orthogonal direction and not projecting in one direction of the second direction corresponding to the transport direction And a plurality of second flap portions protruding in the other direction of the first direction corresponding to the other direction of the orthogonal direction and not protruding in one direction of the second direction corresponding to the transport direction. Cleaning sheet material forming step for forming an object (hereinafter, referred to as “cleaning sheet material forming step”)
The manufacturing method of the present disclosure will be described in detail below.

13 to 15 are diagrams for explaining a manufacturing method according to one of the embodiments of the present disclosure (hereinafter referred to as “first B1 embodiment”). Specifically, FIG. 13 is a view for explaining a flap forming step of the manufacturing method according to the B1 embodiment, and FIG. 14 shows a cleaning sheet material forming step of the manufacturing method according to the B1 embodiment. It is a figure for demonstrating. FIG. 15 is an enlarged view of region III in FIG.
In addition, the cleaning sheet material 401 manufactured by the manufacturing method according to the B1 embodiment is the same as the cleaning sheet 1 in the A1 embodiment.

As shown in FIG. 13, in the flap portion forming step, a belt-shaped nonwoven fabric 405 having a plurality of material regions 403 constituting the cleaning sheet material 401 is transferred in the transport direction MD using the belt conveyor 451 and the belt conveyor 453. An orthogonal direction that is one direction of the orthogonal direction CD orthogonal to the conveyance direction MD is passed through each of the plurality of material regions 403 through the first cutter unit 455 configured by the cutter roll 457 and the anvil roll 461 while being conveyed. A plurality of first flap portions 11 projecting in one direction CD ₁ and a plurality of second flap portions 21 projecting in the other direction CD ₂ in the orthogonal direction, which is the other direction of the orthogonal direction CD, are formed.

The cutter roll 457 includes a plurality of blades 459 corresponding to the plurality of first flap portions 11 and the plurality of second flap portions 21, and the plurality of first flap portions 11 (specifically, the first free portion). Each of the end portions 19) is formed so as to penetrate the plurality of material regions 403 (strip-shaped nonwoven fabric 405), and each of the plurality of second flap portions 21 (specifically, the second free end portion 29). Are formed so as to penetrate a plurality of material regions 403 (band-like nonwoven fabric 405).

Each of the plurality of first flap portions 11 protrudes in the orthogonal direction one direction CD ₁ and does not protrude in the transport direction MD. Each of the plurality of second flap portions 21 protrudes in the other direction CD ₂ in the orthogonal direction and does not protrude in the transport direction MD.

More specifically, in the flap portion forming step, the plurality of first flap portions 11 includes the first downstream end portion 473 on the downstream side of each of the plurality of first flap portions 11 and the first upstream side on the upstream side thereof. It is formed so as to be arranged in one orthogonal direction CD ₁ rather than the side end portion 475. In addition, the plurality of second flap portions 21 are configured such that the second downstream end portion 477 on the downstream side of each of the plurality of second flap portions 21 is in the other direction orthogonal to the upstream side second upstream end portion 479. It is formed to be positioned from the CD _2. By doing so, when manufacturing the cleaning sheet material 401, specifically, when transporting the strip-shaped nonwoven fabric 405 that has undergone the flap portion forming step in the transport direction MD, the plurality of first flap portions 11 and the plurality of the first flap portions 11 and Each of the 2nd flap parts 21 becomes difficult to return.

In the flap portion forming step, for example, the belt-shaped nonwoven fabric 405 can be transported in the transport direction MD at a speed of 28 to 280 m / min. The 1 flap part 11 and the several 2nd flap part 21) receive the wind speed opposite to conveyance direction MD.

As shown in FIG. 14, in the cleaning sheet material forming step, the cutter roll 467 is transported in the transport direction MD using the belt conveyor 453 and the belt conveyor 463 by using the belt conveyor 453 and the belt conveyor 463. Then, using the second cutter portion 465 composed of the anvil roll 471, the strip-shaped nonwoven fabric 405 is cut into a plurality of material regions 403 to form a plurality of cleaning sheet materials 401. The cutter roll 467 includes a blade 469 extending in the orthogonal direction CD.

Each of the plurality of cleaning sheet material 401, the first direction D ₁ perpendicular to each other, having a second direction D ₂ and the thickness direction T, corresponding to the orthogonal direction one direction CD _1, the first direction D ₁ A plurality of first flap portions 11 projecting in one direction D ₁₁ in the first direction and not projecting in one direction D ₂₁ in the second direction D ₂ corresponding to the transport direction MD, and the other direction CD _{2 in the} orthogonal direction. does not protrude in the first direction D second direction D the second direction one-way D ₂₁ of ₂ corresponding to the first projecting direction other direction D ₁₂ and the conveyance direction MD of ₁ corresponding to a plurality of second flap portion 21 And.

The cleaning sheet material 401 is the same as the cleaning sheet 1 in the first A1 embodiment, and is formed in the flap portion forming step. The first downstream end portions 473 and the first upstream portions of the plurality of first flap portions 11 are formed. The side end portions 475 correspond to the first other end 15 and the first end 13 of the cleaning sheet 1, respectively, and the second downstream end portion 477 and the second upstream end portion 479 in the plurality of second flap portions 21. Respectively correspond to the second other end 25 and the second end 23.

In the cleaning sheet material forming step, for example, the strip-shaped nonwoven fabric 405 can be transported in the transport direction MD at a speed of 28 to 280 m / min, and attention is paid to the strip-shaped nonwoven fabric 405, as in the flap portion forming step. Then, the strip-shaped nonwoven fabric 405 (the plurality of first flap portions 11 and the plurality of second flap portions 21) receives a wind speed opposite to the conveyance direction MD.

Also in the cleaning sheet material forming step, each of the strip-shaped nonwoven fabric 405 (a plurality of material regions 403) and the plurality of cleaning sheet materials 401 does not protrude in the conveyance direction MD, By forming the plurality of second flap portions 21, when manufacturing the cleaning sheet material 401, specifically, when the belt-shaped nonwoven fabric 405 is transported in the transport direction MD in the cleaning sheet material forming step. Each of the plurality of first flap portions 11 and the plurality of second flap portions 21 is not easily folded back.

The cleaning sheet material 401 can be used as the cleaning sheet 1 as it is.
As described above, since the cleaning sheet material 401 (cleaning sheet 1) is the same as the cleaning sheet 1 according to the A1 embodiment, the description thereof is omitted.

The cleaning sheet material 401 can be used as it is as a (single-layer) cleaning sheet 1 as it is, and can also be used as a component of a multilayer cleaning sheet. An example of the multilayer cleaning sheet is the multilayer cleaning sheet 51 shown in the A2 embodiment, and a description thereof is omitted.

The cleaning sheet material manufactured by the manufacturing method of the present disclosure is not particularly limited, and can be used as a cleaning sheet as it is, for example, as in the B1 embodiment. In addition, when using the said cleaning sheet as a cleaning sheet as it is, both surfaces of the cleaning sheet (cleaning sheet material) comprise a cleaning surface.

Moreover, the cleaning sheet material manufactured by the manufacturing method can be used as a constituent sheet, particularly a surface sheet, constituting a multilayer cleaning sheet including a plurality of layers.
As said multilayer cleaning sheet, what is demonstrated regarding the aspect A group is mentioned.

The material of the cleaning sheet material is not particularly limited, and can be a film or a fabric (for example, a nonwoven fabric, a woven fabric or a knitted fabric). For example, a spunlace nonwoven fabric, an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a thermal bond Nonwoven fabrics, point bond nonwoven fabrics, melt blown nonwoven fabrics, chemical bond nonwoven fabrics, airlaid nonwoven fabrics and the like can be mentioned.

When the material for the cleaning sheet material is composed of a fabric (for example, non-woven fabric) containing fibers, the fabric preferably contains hydrophilic fibers and hydrophobic fibers, and the hydrophilic fibers and The hydrophobic fibers are more preferably 5-45% by weight and 55-95% by weight, more preferably 20-30% by weight and 70-80% by weight, and even more preferably 23-28% by weight and 72-77% by weight. Included as a percentage. By doing so, it becomes easy for the cleaning sheet material to scrape solid dirt, and it is easy to collect hydrophilic liquid dirt and hydrophobic liquid dirt.
In addition, when the said fabric is comprised from the multilayer of 2 layers or 3 layers or more mentioned later, the ratio of the above-mentioned hydrophilic fiber and hydrophobic fiber means the ratio as the whole fabric.

When the cleaning sheet material is used as a constituent sheet of a multilayer cleaning sheet including a water retention sheet, the cleaning sheet material may be composed of a single layer and may be composed of multiple layers. Good.
When the cleaning sheet material is composed of two or three or more layers, a first layer constituting the first surface on the surface to be cleaned side and a second surface on the water retaining sheet side are constituted. Each of the second layer preferably includes a hydrophilic fiber and a hydrophobic fiber, and the ratio of the hydrophobic fiber constituting the second layer is preferably higher than the ratio of the hydrophobic fiber constituting the first layer. Higher, more preferably 1.00 to 2.00 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 liquid retained by the water retention sheet on the surface to be cleaned, and the second layer has a plurality of first flap portions and / or a plurality of second flaps. When the part is folded, the scraping property of the dirty part is relatively excellent. In addition, since the second layer having a high hydrophobic fiber ratio is less likely to stick to the water retaining sheet, the plurality of first flap portions and / or the plurality of second flap portions are easily folded when the cleaning sheet is used.

As said hydrophilic fiber and hydrophobic fiber, what is demonstrated regarding the aspect A group is mentioned.
As said water retention sheet, what is demonstrated regarding the group of aspects A is mentioned.

In the manufacturing method of the present disclosure, a cleaning sheet material including a plurality of first flap portions and a plurality of second flap portions is formed. Each of the plurality of first flap portions and the plurality of second flap portions moves away from the fixed end portion with 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 as a starting point. As long as it is composed of a free end projecting in the direction, it is not particularly limited and can have any shape, and the free end is a direction away from the fixed end from one end and the other end. It is preferable to be curved so as to be convex.

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, the farthest portion farthest from the fixed end portion, is preferably 3.0 to 25.0 mm, more preferably Is from 5.0 to 20.0 mm, and more preferably from 7.0 to 15.0 mm. By doing so, when using the cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet), each of the plurality of first flap portions and the plurality of second flap portions easily reciprocates.

FIG. 16 is a diagram for describing an example of the flap portion in the cleaning sheet material manufactured by the manufacturing method of the present disclosure. A flap portion 501 shown in FIG. 16A has one end 503 and the other end 505, a fixed end portion 507 that linearly connects the one end 503 and the other end 505, and a fixed end with the one end 503 and the other end 505 as starting points. curved to be a convex in a direction away from the part 507 is composed of a free end portion 509 Metropolitan has a free end portion 509 is semi-circular arc portion of the curvature radius R _1, and Kamata farthest portion 511, having a radius of curvature R _1.

A flap portion 501 shown in FIG. 16B has one end 503 and the other end 505, a fixed end portion 507 that linearly connects the one end 503 and the other end 505, and a fixed end with the one end 503 and the other end 505 as starting points. curved to be a convex in a direction away from the part 507 is composed of a free end portion 509 Metropolitan has a free end portion 509 is elliptical section, and the farthest portion 511 has a radius of curvature R _2.

A flap portion 501 shown in FIG. 16C includes one end 503 and the other end 505, a fixed end portion 507 that linearly connects the one end 503 and the other end 505, two straight portions, and an elliptical arc between them. The free end portion 509 is composed of a portion, and the farthest portion 511 has a radius of curvature R ₃ .
A flap portion 501 shown in FIG. 16D has one end 503 and the other end 505, a fixed end portion 507 that linearly connects the one end 503 and the other end 505, and a free end constituted by three straight portions. The farthest part 511 is composed of a straight line part having a crossing angle of 0 ° with the fixed end part 507. In addition, the flap part 201 shown by FIG. 11 also corresponds to the flap part in the material for cleaning sheets manufactured by the manufacturing method of this indication.

In the manufacturing method of the present disclosure, it is possible to form a cleaning sheet material including a plurality of first flap portions and a plurality of second flap portions having an arbitrary size, and a plurality of first flaps. The cleaning sheet includes a first flap portion with a relatively small area disposed inward in the first direction and a first flap portion with a relatively large area disposed outward as the portions. It is preferable to form materials for use. By doing so, in the cleaning sheet material to be formed (single-layer cleaning sheet, multi-layer cleaning sheet), the first flap portion having a relatively large area disposed on the outside is relatively large. When the reciprocating motion is performed, the enlarged dust linking body can be easily held by winding the trash linking body or the like. In addition, the first flap portion having a small area disposed inward performs a relatively small reciprocating motion, and captures the dust left by the first flap portion having a large area disposed outward. be able to.

For the same reason, the cleaning sheet material manufactured by the manufacturing method of the present disclosure is disposed inwardly in the first direction as a plurality of second flap portions, and has a relatively small area. It is preferable to include a two-flap portion and a second flap portion that is disposed outward and has a relatively large area.

In the manufacturing method of the present disclosure, in the flap portion forming step, the plurality of first flap portions are arranged so that the downstream end portions of the plurality of first flap portions are orthogonal to each other in the orthogonal direction. It is preferable to form so as to be arranged in the direction. Further, the plurality of second flap portions are formed such that the downstream end portions of the plurality of second flap portions are arranged in other directions in the orthogonal direction than the upstream end portions thereof. Is preferred. By doing so, when the cleaning sheet material is manufactured, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back. Become.

In the manufacturing method of the present disclosure, in the flap portion forming step, at least a part of the plurality of first flap portions and the plurality of second flap portions are respectively connected to the plurality of material regions in the planar direction of the plurality of material regions. And may be formed by cutting so as to penetrate intermittently in the planar direction of the plurality of material regions. By forming at least a part of the plurality of first flap portions and the plurality of second flap portions by cutting so as to penetrate intermittently in the planar direction of the plurality of material regions, At this time, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back.

In the manufacturing method of the present disclosure, in the flap portion forming step, at least a part of the plurality of first flap portions and the plurality of second flap portions are passed through each of the plurality of material regions in the thickness direction of the plurality of material regions. You may form by cutting so that it may not. By doing so, when the cleaning sheet material is manufactured, specifically, when the belt-shaped nonwoven fabric that has undergone the flap portion forming step is transported in the transport direction, the first flap portion and the second flap portion are not easily folded back. Become.

In the manufacturing method 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 is adjacent to each other. As the plurality of first flap portions and the plurality of second flap portions that are arranged, the first movable region of the first flap portion and the second movable region of the second flap portion are the thickness of the cleaning sheet material. It is preferable to form the cleaning sheet material overlapping in the direction. By doing so, the formed cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) exhibits a small dust capturing action, a large dust entanglement action, a dust connector holding action, and a dirt wiping action. can do.

In the manufacturing method of the present disclosure, as the plurality of first flap portions and the plurality of second flap portions that are disposed adjacent to each other, the first flap portion and the second flap portion are the thickness of the cleaning sheet material. It is preferable to form the cleaning sheet material overlapping in the direction. By doing so, the formed cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) exhibits a small dust capturing action, a large dust entanglement action, a dust connector holding action, and a dirt wiping action. can do.

In addition, the cleaning sheet material manufactured by the manufacturing method of the present disclosure is a single-layer cleaning sheet composed of the cleaning sheet material or a multilayer cleaning sheet including the cleaning sheet material attached to the cleaning tool and cleaned. When cleaning the surface, if the cleaning sheet (multi-layer cleaning sheet) is moved in one direction in the first direction, the first flap portion comes into contact with a portion with high friction (for example, a dirty portion). The flap portion is folded in the other direction with the first surface inside (in this specification, “the flap portion is folded in the other direction with the first surface inside” is simply referred to as “the flap portion. May be referred to as “folded in the other direction”), a first opening is formed in the cleaning sheet (multi-layer cleaning sheet) where the first flap exists, and small dust From the first opening to the inside (e.g. Sheet (multi-layer cleaning sheet) and cleaning tool, cleaning sheet (multi-layer cleaning sheet), water retention sheet, etc.) Is called “small dust taking-in action”). In addition, since the said small dust taking-in effect is the highest in the vicinity of the fixed end of the first opening, it tends to be higher when the cleaning sheet (multi-layer cleaning sheet) is moved in one direction. In addition, small dust is also taken in into the fiber of a nonwoven fabric, and is removed.

Further, the cleaning sheet (multi-layer cleaning sheet) is moved in one direction in the first direction, the first flap portion is folded in the other direction, and the cleaning sheet (multi-layer cleaning sheet) is moved in the other direction in the first direction. When moving and reciprocating with the first flap portion returning to one direction, the first flap portion can entangle large dust (in this specification, the flap portion reciprocates) Entangling a large amount of garbage is referred to as a “large garbage entangling action”). In addition, since the thickness of the cleaning sheet (multi-layer cleaning sheet) is increased, the large dust entwining action is performed when the first flap portion is folded in the other direction, that is, the cleaning sheet (multi-layer cleaning sheet). When moving in one direction, it tends to be higher.

In addition, when cleaning the surface to be cleaned using a cleaning sheet (multi-layer cleaning sheet), the dust on the surface to be cleaned, such as hair and dust, is first around the cleaning sheet (multi-layer cleaning sheet). There is a tendency that the dust that is captured at the portion and not captured at the periphery of the cleaning sheet (multi-layer cleaning sheet) moves to the center of the cleaning sheet (multi-layer cleaning sheet). Accordingly, when the amount of dust captured by the cleaning sheet (multi-layer cleaning sheet) increases, the amount of dust such as hair and dust captured on the periphery of the cleaning sheet (multi-layer cleaning sheet) and the surface to be cleaned , Such as hair, dust, etc., are connected to each other and form a rod-shaped dust connector. The first flap portion continues to hold the dust connection body when performing the reciprocating motion (hereinafter, the operation of holding the dust connection body when the flap portion performs the reciprocating motion is referred to as “dust connection body holding action”. May be referred to as "." In addition, since the thickness of the cleaning sheet (multi-layer cleaning sheet) is increased in the dust connector holding action, the first flap portion is folded in the other direction, that is, the cleaning sheet (multi-layer cleaning sheet). When moving in one direction, it tends to be higher.

Further, when the first flap portion is folded, that is, when the cleaning sheet (multi-layer cleaning sheet) is moved in one direction, the first flap portion is folded back. And an uneven region including a convex region that is an overlapping region in the thickness direction, a first opening, and a concave region that is an overlapping region in the thickness direction. The wipeability of dirt (for example, solid sebum dirt) by the layer cleaning sheet is improved (in this specification, the flap portion is folded to form an uneven area, and the dirt is wiped off. Called "action").

Paying attention to the plurality of second flap portions, like the plurality of first flap portions, it has a small dust taking-in action, a large dust entanglement action, a dust linking body holding action, and a dirt wiping action. When the cleaning sheet (multi-layer cleaning sheet) is moved in the other direction of the first direction, it tends to be higher.
From the above, the cleaning sheet (multi-layer cleaning sheet) is capable of taking in small dust, taking up large dust, holding up dust ligatures, even when moved in one direction of the first direction and the other. , And dirt wiping action.

Moreover, the said multilayer cleaning sheet applies the chemical | medical solution currently hold | maintained to a stain | pollution | contamination part without a water retaining sheet interposing a surface sheet, when a some 1st flap part and a 2nd flap part are turned up. , The soiled portion can be moistened and easily removed (referred to herein as “soiled portion wetting action”).

In the manufacturing method of the present disclosure, as the plurality of first flap portions and the plurality of second flap portions that are arranged adjacent to each other, the free end portion of the first flap portion intersects with the free end portion of the second flap portion. However, it is preferable to form a cleaning sheet material in which the fixed end portion of the first flap portion intersects the fixed end portion of the second flap portion. By doing so, the formed cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) exhibits a small dust capturing action, a large dust entanglement action, a dust connector holding action, and a dirt wiping action. can do.

DESCRIPTION OF SYMBOLS 1 Cleaning sheet 3 1st surface 5 2nd surface 11 1st flap part 17 1st fixed end part 19 1st free end part 21 2nd flap part 27 2nd fixed end part 29 2nd free end part 45 1st opening part 47 2nd opening 51 Multi-layer cleaning sheet 53 1st surface sheet 55 Water retention sheet 57 2nd surface sheet 401 Cleaning sheet material 403 Material area 405 Band-shaped nonwoven fabric 451 Belt conveyor 453 Belt conveyor 455 First cutter portion 457 Cutter roll 459 Blade 461 Anvil roll 463 Belt conveyor 465 Second cutter part 467 Cutter roll 469 Blade 471 Anvil roll CR Cleaning area P Planar direction D ₁ 1st direction D ₁₁ 1st direction 1 direction D ₁₂ 1st direction other direction D ₂ 2nd direction D ₂₁ the second direction one-way D ₂₂ second direction other direction T towards thickness MR1 first movable area MR2 second movable area L the longitudinal direction S widthwise direction MD conveying direction CD orthogonal direction CD ₁ perpendicular direction direction CD ₂ orthogonal directions other direction

Claims

A cleaning sheet comprising a nonwoven fabric, comprising a first direction, a second direction and a thickness direction orthogonal to each other, and a cleaning region,
The cleaning sheet includes a plurality of first flap portions protruding in one direction of the first direction and a plurality of second flap portions protruding in the other direction of the first direction in the cleaning area,
Each of the plurality of first flap portions and the plurality of second flap portions includes 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 as a starting point. 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 disposed adjacent to each other.
The cleaning sheet.
In the first direction, the cleaning sheet is disposed inward as the plurality of first flap portions, and the first flap portion having a relatively small area and the outer surface having a relatively area. A large first flap portion, and a plurality of the second flap portions, which are arranged inwardly, the second flap portion having a relatively small area, and a relatively large area, which is arranged outward. The cleaning sheet according to claim 1, further comprising a large second flap portion.
Each of the plurality of first flap portions has a first movable region that is a maximum region in which the first flap portion can exist when the first flap portion is folded at an arbitrary position, and the plurality of second flap portions 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 sheets are disposed adjacent to each other, a first movable region of the first flap portion and a second movable region of the second flap portion. Including those that overlap in the thickness direction,
The cleaning sheet according to claim 1 or 2.
As the plurality of first flap portions and the plurality of second flap portions, which are disposed 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 claims 1 to 3, further comprising:
As the plurality of first flap portions and the plurality of second flap portions, the cleaning sheet is disposed adjacently, and the free end portion of the first flap portion is the free end portion of the second flap portion. The cleaning according to any one of claims 1 to 4, wherein the fixed end portion of the first flap portion includes a portion that does not intersect the fixed end portion of the second flap portion. Sheet.
A multi-layer cleaning sheet comprising a surface sheet and a water retention sheet for holding a chemical solution,
The top sheet is composed of the cleaning sheet according to any one of claims 1 to 5,
The multilayer cleaning sheet.
A method for continuously producing cleaning sheet materials,
While the strip-shaped nonwoven fabric having a plurality of material regions constituting the cleaning sheet material is conveyed in the conveyance direction, each of the plurality of material regions protrudes in one direction orthogonal to the conveyance direction. A plurality of first flap portions, each of which does not protrude in the transport direction, and a plurality of second flap portions that protrude in the other direction of the orthogonal direction, each of which A flap forming step for forming a non-projecting one in the conveying direction;
The strip-shaped nonwoven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and is a plurality of materials for the cleaning sheet, each of which is in a first direction and a second direction orthogonal to each other. And a plurality of first flap portions that have a thickness direction, project in one direction in the first direction corresponding to the one direction in the orthogonal direction, and do not project in one direction in the second direction corresponding to the transport direction. And a plurality of second flap portions that protrude in the other direction of the first direction corresponding to the other direction of the orthogonal direction and do not protrude in one direction of the second direction corresponding to the transport direction. Forming a cleaning sheet for material forming step,
Including said method.
In the flap portion forming step, the plurality of first flap portions are arranged such that the downstream end portions thereof are arranged in the one direction in the orthogonal direction with respect to the upstream end portions thereof. The plurality of first flap portions and the plurality of second portions are arranged such that the downstream end portions of the second flap portions are arranged in the other direction of the orthogonal direction with respect to the upstream end portions thereof. The method according to claim 7, wherein a flap portion is formed.
In the flap part forming step, each of the plurality of first flap parts and the plurality of second flap parts is formed by cutting so as not to penetrate each of the plurality of material regions. The method described in 1.
10. The flap portion forming step, wherein each of the plurality of first flap portions and the plurality of second flap portions is formed by intermittently cutting each of the plurality of material regions. The method according to any one of the above.