JP6847078B2 - Method of continuously manufacturing materials for cleaning sheets - Google Patents

Description

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

A cleaning sheet for cleaning dust, dust, etc. existing on the surface to be cleaned is known.
For example, Patent Document 1 describes a cleaning sheet composed of a sheet structure forming a cleaning portion, wherein the sheet structure has a group of cuts formed by forming a large number of cuts in a predetermined pattern on a sheet raw material. A sheet material having a plurality of slit holes formed by stretching the sheet raw material in a direction intersecting with the thickness direction of the sheet raw material and widening a plurality of cuts forming at least a part of the cut group. A cleaning sheet is described which is provided and is characterized in that at least a part of slit holes in the sheet material is located in the cleaning portion.

Japanese Unexamined Patent Publication No. 2013-27682

The inventors of the present application form a flap portion protruding in opposite directions on the cleaning sheet, so that the flap portion is folded back in the direction opposite to the direction in which the cleaning sheet is moved during cleaning, so that dust and the like are entangled. Although it was found that it could be removed, it was found that the flap portion protruding in the opposite direction was folded back during the manufacturing of the cleaning sheet, which could cause a defect in the manufactured cleaning sheet.
In the cleaning sheet described in Patent Document 1, for example, when the slit hole shown in FIG. 9 is provided, the sheet material is blown by the wind when the cleaning sheet is continuously produced, especially when continuously produced at high speed. , The sheet material may be turned up at the slit hole, causing a problem in the manufactured cleaning sheet.

Therefore, the present disclosure provides a method for continuously producing a cleaning sheet material having flaps protruding in one direction and the other direction in the first direction, which are difficult to be folded back during manufacturing and easily folded back during use. The purpose.

The present disclosers are a method of continuously producing a material for a cleaning sheet, and the above-mentioned plurality of materials while transporting a strip-shaped non-woven fabric having a plurality of material regions constituting the material for the cleaning sheet in a transporting direction. A plurality of first flap portions projecting in one direction orthogonal to the transport direction in each of the regions, each of which does not project in the transport direction, and another direction in the orthogonal direction. A flap portion forming step for forming a plurality of second flap portions, each of which does not project in the transport direction, and a strip-shaped non-woven fabric that has undergone the flap portion forming step. A plurality of cleaning sheet materials cut into each of a plurality of material regions, each of which has a first direction, a second direction, and a thickness direction orthogonal to each other, and the above-mentioned one in the orthogonal direction. A plurality of first flap portions that project in one direction of the first direction corresponding to the direction and do not project in one direction of the second direction corresponding to the transport direction, and a first flap portion corresponding to the other direction in the orthogonal direction. Finding a method comprising a material forming step for a cleaning sheet to form a material having a plurality of second flaps protruding in the other direction of the direction and not protruding in one direction of the second direction corresponding to the transport direction. Orthogonal.

The method of continuously producing the cleaning sheet material of the present disclosure is to continuously produce a cleaning sheet material having flaps protruding in one direction and the other direction in the first direction, which are difficult to be folded back at the time of manufacturing and easy to be folded back at the time of use. Can be manufactured at.

FIG. 1 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 2 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is an enlarged view of region III of FIG. FIG. 4 is a front view of the cleaning sheet 101 composed of the cleaning sheet material 1 manufactured by the manufacturing method according to the first embodiment. FIG. 5 is a rear view of the cleaning sheet 101. FIG. 6 is an enlarged perspective view of the region VI of FIG. FIG. 7 is a diagram for explaining the reciprocating motion of the first flap portion 111 and the second flap portion 121, and corresponds to an enlarged perspective view of the region VI of FIG. FIG. 8 is a diagram for explaining a cleaning sheet 101 after cleaning the surface to be cleaned. FIG. 9 is a diagram for explaining a state in which the cleaning sheet 101 is attached to the cleaning tool 401. FIG. 10 is a plan view of the multi-layer cleaning sheet 151. FIG. 11 is a cross-sectional view of the multi-layer cleaning sheet 151 in the XI-XI cross section of FIG. FIG. 12 is a diagram for explaining a movable region of the flap portion. FIG. 13 is a diagram for explaining an example of a flap portion in the cleaning sheet material formed by the manufacturing method of the present disclosure.

[Definition]
・ "Protrusion" in the transport direction of the flap part
In the present specification, the flap portion "protruding" in the transport direction means that the flap portion is arranged between one end and the other end on the upstream side in the transport direction. The fact that the flap portion does not "protrude" in the transport direction means that the flap portion is freely arranged between one end and the other end on the upstream side in the transport direction. Means that it has no edges.

In the present specification, the "flap portion" means the first flap portion and / or the second flap portion, and the "one end" is the first end and / or the second flap portion of the first flap portion. 2 One end, and "the other end" means the first other end of the first flap portion and / or the second other end of the second flap portion.

・ "Area" of flap part
In the present specification, the area of the flap portion means the area of the section defined by the free end portion and the fixed end portion constituting the flap portion measured from the thickness direction of the cleaning sheet.
In the present specification, the "free end portion" means the first free end portion of the first flap portion and / or the second free end portion of the second flap portion, and the "fixed end portion" is the first. 1 It means the first fixed end portion of the flap portion and / or the second fixed end portion of the second flap portion.

・ "Movable area" of the flap part
In the present specification, the movable area of the flap portion means the maximum area where the flap portion can exist when the flap portion is folded back so as to be in contact with the remaining portion of the cleaning sheet at an arbitrary position one or more times. 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.

FIG. 12 is a diagram for explaining a movable region of the flap portion, and the flap portion 201 has one end 203 and the other end 205, a fixed end portion 207 that linearly connects one end 203 and the other end 205, and one end. The free end 209 is composed of a free end 209 protruding in a direction away from the fixed end 207 starting from 203 and the other end 205, and the free end 209 is a straight line passing through one end 203 and the farthest 211. It is composed of a portion and a straight portion passing through the other end 205 and the farthest portion 211.

FIG. 12 also shows the flap portion 201a, the flap portion 201b, the flap portion 201c, and the flap portion 201d (when folded back at the fixed end portion 207) when the flap portion 201 is folded back once at different positions. The movable region 213 passes through an arc 215 having one end 203 as the center and a straight portion passing through the one end 203 and the farthest portion 211 as a radius, and the other end 205 centered on the other end 205 and the farthest portion 211. It is partitioned by an arc 217 having a straight portion as a radius.

When the flap portion is a flap portion 301 including a free end portion 309 composed of a semicircular arc portion as shown in FIG. 13A, the movable region (not shown) of the flap portion 301 is a flap. The free end portion 309 of the portion 301 and the flap portion 301 are partitioned by the free end portion 309 when the flap portion 301 is folded back at the fixed end portion 307.
The same applies to the movable region when the flap portion is a flap portion having a free end portion composed of an arc portion less than a semi-circular arc portion.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
It is a method of continuously manufacturing materials for cleaning sheets.
While transporting the strip-shaped non-woven fabric having a plurality of material regions constituting the cleaning sheet material in the transport direction, each of the plurality of material regions projects in one direction orthogonal to the transport direction. , A plurality of first flap portions, each of which does not project in the transport direction, and a plurality of second flap portions, each of which projects in the other direction in the orthogonal direction, each of which is described above. Flap portion forming step, forming a non-protruding object in the transport direction,
The strip-shaped non-woven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and the plurality of materials for the cleaning sheet, each of which is orthogonal to each other in the first direction and the second direction. A plurality of first flap portions having a thickness direction and protruding in one direction of the first direction corresponding to the one direction in the orthogonal direction and not protruding in one direction of 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 in the orthogonal direction and do not protrude in one direction of the second direction corresponding to the transport direction. Cleaning sheet material forming step, forming
The above method including.

In the above manufacturing method, a plurality of predetermined first flap portions and a plurality of second flap portions are formed in each of the plurality of material regions of the strip-shaped non-woven fabric constituting the material for the cleaning sheet, so that the cleaning sheet is formed. At the time of manufacturing, specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are less likely to be folded back.
Further, the cleaning sheet material (cleaning sheet) manufactured by the above manufacturing method has a plurality of first flap portions protruding in one direction in the first direction and a plurality of cleaning sheet materials protruding in the other direction in the first direction. Since the second flap portion of the above is provided, 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 in the cleaning direction. You can move to the other side and entangle debris.

[Aspect 2]
In the flap portion forming step, the plurality of flap portions are arranged so that the downstream end portions of the plurality of first flap portions are arranged in the one direction orthogonal to the upstream end portion. The plurality of first flap portions and the plurality of second flap portions are arranged so that the downstream end portions of the second flap portions are arranged in the other directions in the orthogonal direction with respect to the upstream end portions. The method according to aspect 1, wherein the flap portion is formed.

In the above manufacturing method, in the flap portion forming step, the upstream end and the downstream end of each of the plurality of first flap portions and the plurality of second flap portions are formed at predetermined positions, so that a cleaning sheet is used. In the production of materials, specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are less likely to be folded back.

[Aspect 3]
In the flap portion forming step, the first flap portion and the plurality of second flap portions are formed by cutting each of the plurality of first flap portions and the plurality of second flap portions so as not to penetrate each of the plurality of material regions, according to the first or second aspect. 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-called half-cut) so as not to penetrate each of the plurality of material areas. At the time of manufacturing, specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are unlikely to be folded back.

On the other hand, when the cleaning sheet is used, the half-cut portion is separated by contacting the first flap portion and the second flap portion with the highly frictional dirty portion of the surface to be cleaned, and the cleaning sheet is used. When the is reciprocated in the first direction, the plurality of first flap portions and the plurality of second flap portions move in the direction opposite to the cleaning direction, and dust can be entangled.

[Aspect 4]
In any of the first to third aspects, 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 in the flap portion forming step. The method described in item 1.

In the above manufacturing method, 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 areas. Specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are unlikely to be folded back.

On the other hand, when the cleaning sheet is used, the part that has been cut intermittently is separated by the first flap part and the second flap part coming into contact with the dirty part having high friction on the surface to be cleaned. When the cleaning sheet is reciprocated in the first direction, the plurality of first flap portions and the plurality of second flap portions move in the direction opposite to the cleaning direction, and dust can be entangled.

The method for continuously producing the cleaning sheet material of the present disclosure (hereinafter, may be simply referred to as "manufacturing method") includes the following steps.
-While transporting the strip-shaped non-woven fabric having a plurality of material regions constituting the cleaning sheet material in the transport direction, each of the plurality of material regions projects in one direction orthogonal to the transport direction. There are a plurality of first flap portions, each of which does not project in the transport direction, and a plurality of second flap portions, each of which projects in the other direction in the orthogonal direction. Flap portion forming step (hereinafter, may be referred to as "flap portion forming step") for forming a flap portion that does not project in the transport direction.

-The strip-shaped non-woven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and the plurality of materials for the cleaning sheet, each of which is orthogonal to each other in the first direction and the second. A plurality of first flaps having a direction and a thickness direction, protruding in one direction of the first direction corresponding to the one direction in the orthogonal direction and not protruding in one direction of the second direction corresponding to the transport direction. The unit is provided with a plurality of second flap portions that project in the other direction of the first direction corresponding to the other direction in the orthogonal direction and do not project in one direction of the second direction corresponding to the transport direction. Cleaning sheet material forming step for forming things (hereinafter, may be referred to as "cleaning sheet material forming step")
The manufacturing method of the present disclosure will be described in detail below.

1 and 2 are diagrams for explaining a manufacturing method according to one of the embodiments of the present disclosure (hereinafter, referred to as "first embodiment"). Specifically, FIG. 1 is a diagram for explaining a flap portion forming step of the manufacturing method according to the first embodiment, and FIG. 2 is a diagram showing a cleaning sheet material forming step of the manufacturing method according to the first embodiment. It is a figure for demonstrating.

As shown in FIG. 1, in the flap portion forming step, the strip-shaped non-woven fabric 5 having a plurality of material regions 3 constituting the cleaning sheet material 1 is transferred to the transport direction MD by using the belt conveyor 51 and the belt conveyor 53. While transporting, the cutter roll 57 and the anvil roll 61 are passed through the first cutter portion 55, and each of the plurality of material regions 3 has an orthogonal direction which is one direction of the orthogonal direction CD orthogonal to the transporting direction MD. A plurality of first flap portions 111 projecting from the unidirectional CD ₁ and a plurality of second flap portions 121 projecting from the _{orthogonal direction other direction CD 2} which is the other direction of the orthogonal direction CD are formed.

The cutter roll 57 includes a plurality of first flap portions 111 and a plurality of blades 59 corresponding to the plurality of second flap portions 121, and the plurality of first flap portions 111 (specifically, the first free). Each of the end portions 119) is formed so as to penetrate the plurality of material regions 3 (strip-shaped non-woven fabric 5), and each of the plurality of second flap portions 121 (specifically, the second free end portion 129). Is formed so as to penetrate the plurality of material regions 3 (strip-shaped non-woven fabric 5).

Each of the plurality of first flap portions 111 _{projects in the orthogonal direction unidirectional CD 1} and does not project in the transport direction MD. Further, each of the plurality of second flap portions 121 _{projects in the other direction CD 2} in the orthogonal direction and does not project in the transport direction MD.

More specifically, in the flap portion forming step, the plurality of first flap portions 111 have the first downstream end portion 159 on the downstream side of each of the plurality of first flap portions 111, and the first upstream end portion on the upstream side thereof. It is formed so as to be arranged in the _{orthogonal unidirectional CD 1 with} respect to the side end portion 161. Further, in the plurality of second flap portions 121, the second downstream end portion 163 on the downstream side of each of the plurality of second flap portions 121 is in the other direction orthogonal to the second upstream side end portion 165 on the upstream side. It is formed so as to be arranged on CD _2. By doing so, when the material 1 for the cleaning sheet is manufactured, specifically, when the strip-shaped non-woven fabric 5 that has undergone the flap portion forming step is transported in the transport direction MD, the plurality of first flap portions 111 and the plurality of first flap portions 111 and the plurality of Each of the second flap portions 121 is less likely to be folded back.

In the flap portion forming step, for example, the strip-shaped nonwoven fabric 5 can be transported in the transport direction MD at a speed of 28 to 280 m / min, and focusing on the strip-shaped nonwoven fabric 5, the strip-shaped nonwoven fabric 5 (plurality of first). The one flap portion 111 and the plurality of second flap portions 121) receive the wind speed in the direction opposite to the transport direction MD.

As shown in FIG. 2, in the cleaning sheet material forming step, the cutter roll 67 is conveyed in the conveying direction MD by using the belt conveyor 53 and the belt conveyor 63 to convey the strip-shaped non-woven fabric 5 that has undergone the flap portion forming step. And the second cutter portion 65 composed of the anvil roll 71, the strip-shaped non-woven fabric 5 is cut into each of the plurality of material regions 3 to form a plurality of cleaning sheet materials 1. The cutter roll 67 includes a blade 69 extending in the orthogonal direction CD.

Each of the plurality of cleaning sheet materials 1 has a first direction D ₁ , a second direction D ₂ and a thickness direction T _{orthogonal to each other, and corresponds to the orthogonal direction unidirectional CD 1} in the first direction D _1. A plurality of first flap portions 111 that protrude in the first direction unidirectional D ₁₁ and do not protrude in the second direction unidirectional D _{21 of the second direction D 2} corresponding to the transport direction MD, and the orthogonal direction other direction CD ₂ A plurality of second flap portions 121 that protrude in the first direction and other directions D ₁₂ of the first direction D ₁ corresponding to the above and do not protrude in the second direction unidirectional D _{21 of the second direction D 2} corresponding to the transport direction MD. And have.

The cleaning sheet material 1 will be described in detail in relation to FIGS. 4 to 9, but the first downstream end portion 159 and the first downstream end portion 159 of the plurality of first flap portions 111 formed in the flap portion forming step. The first upstream end 161 corresponds to the first end 115 and the first end 113, respectively, and the second downstream end 163 and the second upstream end 165 of the plurality of second flaps 121 , Corresponding to the second end 125 and the second end 123, respectively.

In the material forming step for the cleaning sheet, for example, the strip-shaped nonwoven fabric 5 can be conveyed in the conveying direction MD at a speed of 28 to 280 m / min, and attention is paid to the strip-shaped nonwoven fabric 5. Then, the strip-shaped non-woven fabric 5 (the plurality of first flap portions 111 and the plurality of second flap portions 121) receives the wind speed in the direction opposite to the transport direction MD.

Also in the cleaning sheet material forming step, the strip-shaped non-woven fabric 5 (plurality of material regions 3) and the plurality of first flap portions 111 in which each of the plurality of cleaning sheet materials 1 does not project in the transport direction MD, By forming the plurality of second flap portions 121, when the cleaning sheet material 1 is manufactured, specifically, when the strip-shaped non-woven fabric 5 is transported in the transport direction MD in the cleaning sheet material forming step. , Each of the plurality of first flap portions 111 and the plurality of second flap portions 121 is less likely to be folded back.

The cleaning sheet material 1 can be used as it is as the cleaning sheet 101.
4 to 9 are diagrams for explaining the cleaning sheet 101 composed of the cleaning sheet material 1 manufactured by the manufacturing method according to the first embodiment. Specifically, FIG. 4 is a front view of the cleaning sheet 101. FIG. 5 is a rear view of the cleaning sheet 101. FIG. 6 is an enlarged perspective view of the region VI of FIG. FIG. 7 is a diagram for explaining the reciprocating motion of the first flap portion 111 and the second flap portion 121, and corresponds to an enlarged perspective view of the region VI of FIG. FIG. 8 is a diagram for explaining a cleaning sheet 101 after cleaning the surface to be cleaned. FIG. 9 is a diagram for explaining a state in which the cleaning sheet 101 is attached to the cleaning tool 401.

The cleaning sheet 101 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 and a first direction other direction D ₁₂ . The second direction D ₂ is divided into a second direction unidirectional D ₂₁ and a second direction other direction D ₂₂ .

In relation to the manufacturing method according to the first embodiment, the second direction unidirectional D ₂₁ corresponds to the transport direction MD. Further, the first direction D ₁ corresponds to the orthogonal direction CD, and the first direction one direction D ₁₁ and the first direction other direction D ₁₂ are the orthogonal direction one direction CD ₁ and the orthogonal direction other direction, respectively. Corresponds to CD _2.

Further, the first direction D ₁ and the second direction D ₂ coincide with the lateral direction and the longitudinal direction of the cleaning sheet 101, respectively, and in relation to the cleaning tool 401, the cleaning sheet is as shown in FIG. In 101, its first direction D ₁ (short direction) coincides with the short direction S of the cleaning sheet mounting portion 405 of the cleaning tool 401, and its second direction D ₂ (longitudinal direction) cleans the cleaning tool 401. It is mounted so as to coincide with the longitudinal direction L of the seat mounting portion 405.

The cleaning sheet 101 is made of a non-woven fabric, has a first surface 103 and a second surface 105 on the opposite side of the first surface 103, and includes a cleaning area CR which is an area for cleaning the surface to be cleaned. There is.
Both the first surface 103 and the second surface 105 can form a cleaning surface.

The cleaning sheet 101 includes a plurality of first flap portions 111 and a plurality of second flap portions 121 in the cleaning area CR.
Each of the plurality of first flap portions 111 has a first fixed end portion 117 and a first one end that linearly connect the first one end 113 and the first other end 115, and the first one end 113 and the first other end 115. It is composed of a first free end portion 119 projecting in a direction away from the first fixed end portion 117 starting from 113 and the first other end 115.

Similarly, each of the plurality of second flap portions 121 has a second fixed end portion 127 that linearly connects the second end 123 and the second other end 125, and the second end 123 and the second other end 125. It is composed of a second free end portion 129 that protrudes in a direction away from the second fixed end portion 127 starting from the second one end 123 and the second other end 125.
Each of the plurality of first flap portions 111 _{projects in one direction D 11} in the first direction, and each of the plurality of second flap portions 121 projects in the _{other direction D 12 in the first direction.}

The cleaning sheet 101 extends in the second direction D ₂ and is arranged apart from the first direction D _1. Seven rows of first flap portions, specifically, first flap portion first group. 131, 1st flap part 2nd group 133, 1st flap part 3rd group 135, 1st flap part 4th group 137, 1st flap part 5th group 139, 1st flap part 6th group 141, 1st flap The 7th group 143 of the part is provided.

In each of the first flap portion 1st group 131 to the 1st flap portion 7th group 143, each of the plurality of first flap portions 111 and each of the plurality of second flap portions 121 project in opposite directions. They are arranged adjacent to each other.

A plurality of first flap portions 111 and a plurality of second flap portions included in the first flap portion second group 133 to the first flap portion sixth group 141 arranged inward in the first direction D _1. Each area of 121 includes a plurality of first flap portions 111 and a plurality of second flap portions included in the first flap portion first group 131 and the first flap portion seventh group 143, which are arranged outward. It is relatively smaller than each area of 121.

By doing so, in the first direction D _1, it is arranged outward, included in the first flap portion first group 131 and the first flap portion seventh group 143, a plurality of first flap portion 111 and a plurality When each of the second flap portions 121 makes a relatively large reciprocating motion, the dust connecting body is involved, and the like, so that the enlarged dust connecting body can be easily held.

Further, each of the plurality of first flap portions 111 and the plurality of second flap portions 121 included in the first flap portion second group 133 to the first flap portion sixth group 141, which are arranged inward, is A plurality of first flap portions 111 and a plurality of second flap portions included in the first flap portion first group 131 and the first flap portion seventh group 143, which perform relatively small reciprocating motions and are arranged outward. The dust left behind by the flap portion 121 can be captured.

_{Further, when the cleaning sheet 101 moves in the first direction and one direction D 11} , the plurality of first flap portions 111 included in the first flap portion second group 133 to the first flap portion sixth group 141 are first. 1 can capture the flap portion dirt first group 131 and the first flap portion seventh group 143 leftover, and the plurality of second flap portion 121, moves the cleaning sheet 101 is in the first direction the other direction D ₁₂ At that time, the dust left behind by the first flap portion 1st group 131 and the 1st flap portion 7th group 143 can be captured.

Further, in each of the first flap portion 1st group 131 to the 1st flap portion 7th group 143, each of the plurality of first flap portions 111 projecting in _{the first direction one direction D 11 and the first direction and the like.} Each of the plurality of second flap portions 121 projecting in the direction D ₁₂ is alternately arranged in _{the second direction D 2.} By doing so, each of the plurality of first flap portions 111 and each of the plurality of second flap portions 121 interfere with each other, resulting in a small dust taking-in action, a large dust entanglement action, and a dust connecting body holding action, which will be described later. It is possible to exert more action and dirt wiping action.

FIG. 6 shows the first flap portion 111 (first end 113, first end 115, first fixed end 117, first free end 119, first movable region MR1, first opening 145). The first flap portion 111a (first end 113a, first other end 115a, first fixed end 117a, first free end 119a, first movable region MR1a, first opening 145a), and the first. 1 flap portion 111c (first end 113c, first end 115c, first fixed end 117c, first free end 119c, first movable region MR1c, first opening 145c) and a second flap 121 ( 2nd end 123, 2nd other end 125, 2nd fixed end 127, 2nd free end 129, 2nd movable region MR2, 2nd opening 147), specifically, 2nd flap 121b (2nd) 2 One end 123b, Second other end 125b, Second fixed end 127b, Second free end 129b, Second movable region MR2b, Second opening 147b), and Second flap 121d (Second end 123d, second 2 The other end (not shown), the second fixed end portion 127d, the second free end portion 129d, the second movable region MR2d, and the second opening 147d) are shown.

As shown in FIG. 6, the adjacent first movable region MR1 of the first flap portion 111 and the second movable region MR2 of the second flap portion 121 overlap in the thickness direction T. Specifically, the first movable region MR1a of the first flap portion 111a and the second movable region MR2b of the second flap portion 121b overlap in the thickness direction T, and the second flap portion 121b is the second. The movable region MR2b and the first movable region MR1c of the first flap portion 111c overlap in the thickness direction T, and the first movable region MR1c of the first flap portion 111c and the second flap portion 121d 2 The movable region MR2d overlaps with the thickness direction T.

By doing so, the first flap portion 111 and the second flap portion 121 interfere with each other, so that complicated movements can be made, and a small dust taking action, a large dust entanglement action, and a dust connecting body can be performed. The holding action and the dirt wiping action can be more exerted.

Further, as shown in FIG. 6, the adjacent first flap portion 111 itself and the second flap portion 121 itself overlap in the thickness direction T. Specifically, the first flap portion 111a itself and the second flap portion 121b itself overlap in the thickness direction T, and the second flap portion 121b itself and the first flap portion 111c itself are thick. It overlaps in the longitudinal direction T, and the first flap portion 111c itself and the second flap portion 121d itself overlap in the thickness direction T.

By doing so, the first flap portion 111 and the second flap portion 121 interfere with each other, so that complicated movements can be made, and a small dust taking action, a large dust entanglement action, and a dust connecting body can be performed. The holding action and the dirt wiping action can be more exerted.

Further, as shown in FIG. 6, the first free end portion 119a of the first flap portion 111a does not intersect the second free end portion 129b of the adjacent second flap portion 121b, and the first flap portion 111a The first fixed end portion 117a of the above intersects the second fixed end portion 127b of the adjacent second flap portion 121b.
Further, the first free end portion 119c of the first flap portion 111c does not intersect with the second free end portion 129d of the adjacent second flap portion 121d, and the first fixed end portion 117c of the first flap portion 111c , Intersects the second fixed end portion 127d of the adjacent second flap portion 121d.

By doing so, the first flap portion 111a and the second flap portion 121b mutually maintain the degree of freedom of the first free end portion 119a and the second free end portion 129b, which are the starting points when performing the reciprocating motion. By interfering with each other, they can make complicated movements, and can more exert a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action. Further, the first flap portion 111c and the second flap portion 121d interfere with each other while maintaining the degrees of freedom of the first free end portion 119c and the second free end portion 129d, which are the starting points when performing the reciprocating motion. By interacting with each other, they can make complicated movements, and can more exert a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action.

In FIG. 6, the relationship between the first flap portion 111 and the second flap portion 121 constituting the first flap portion fourth group 137 has been described, but the first flap portion first group 131 to the first flap portion seventh group have been described. In each of the 143s, the first flap portion 111 and the second flap portion 121 have the same relationship.

As shown in FIG. 7, when the cleaning sheet 101 is _{moved in the first direction unidirectional D 11} , the first flap portion 111 (the first flap portion 111a and the first flap portion 111c) is moved in the first direction and the like. Folds in direction D _12. At that time, if the second flap portion 121 (second flap portion 121b and second flap portion 121d) is _{folded in the first direction and one direction D 11} , the first flap portion 111 (first flap portion) As the 111a and the first flap portion 111c) are folded, the second flap portion 121 (the second flap portion 121b and the second flap portion 121d) falls toward the _{other direction D 12 in the first direction.} It becomes easier to return to the original position.

The first flap portion 111 (first flap portion 111a and the first flap portion 111c) is _{folded in the other direction D 12} in the first direction, so that the first flap portion 111 (first flap portion 111a and the first flap portion 111a and the first flap portion 111a) are folded. The first opening 145 (first opening 145a and first opening 145c) is formed in the place where the first flap portion 111c) was present, and the second flap portion 121 (second flap portion 121b) is formed. , by being folded in a first direction one-way D _11, a location second flap portion 121 (second flap portion 121b) was present, the second opening 147 (second opening 147b, and the second opening Part 147d) is formed.

The first opening 145 formed by folding the first flap portion 111 tends to have the highest effect of taking in small dust in the vicinity of the first fixed end portion 117, which is the folding starting point of the first flap portion 111. Therefore, the first opening 145 (the first opening 145a and the first opening 145c) tends to have a high effect of taking in small dust when _{the cleaning sheet 101 is moved in the first direction unidirectional D 11.} is there. Further, the second opening 147 formed by folding the second flap portion 121 tends to have the highest effect of taking in small dust in the vicinity of the second fixed end portion 127, which is the folding starting point of the second flap portion 121. Therefore, the second opening 147 (the second opening 147b and the second opening 147d) tends to have a high effect of taking in small dust when _{the cleaning sheet 101 is moved in the first direction and the other direction D 12.} is there.

Although not shown, when the cleaning sheet 101 is moved in the first direction and the other direction D 12, the second flap portion 121 (the second flap portion 121b and the second flap portion 121d) is moved _{in the first direction and the other direction D 12.} Wrapped back to _11. Along with this, the first flap portion 111 (the first flap portion 111a and the first flap portion 111c) _{falls toward the first direction unidirectional D 11} and easily returns to the original position.

As shown in FIG. 9, the cleaning sheet 101 is brought into contact with the cleaning sheet mounting portion 405 of the cleaning tool 401 including the grip portion 403 and the cleaning sheet mounting portion 405, with the first surface 103 of the cleaning sheet 101 in contact with the surface to be cleaned. As shown in FIG. 8, when the second surface 105 is attached so as to be in contact with the cleaning sheet attachment portion 405 and the surface to be cleaned is cleaned, the plurality of first flap portions 111 and the plurality of second flap portions are as shown in FIG. Each of 121 holds by entraining the dust connecting body 407, and small dust (not shown) is passed through each of the plurality of first openings 145 and the plurality of second openings 147. Collect and hold small debris (not shown) between the cleaning sheet 101 and the cleaning sheet mounting portion 405.

The cleaning sheet material 1 can be used as it is as a (single-layer) cleaning sheet 101, or can also be used as a component of the multi-layer cleaning sheet 151.
10 and 11 are diagrams for explaining an example in which the cleaning sheet material 1 is used as a component of the multi-layer cleaning sheet 151. 10 is a plan view of the multi-layer cleaning sheet 151, and FIG. 11 is a cross-sectional view of the multi-layer cleaning sheet 151 in the XI-XI cross section of FIG.

The multi-layer cleaning sheet 151 includes a first surface sheet 153 forming a cleaning surface, a water retention sheet 155 for holding a chemical solution, and a second surface sheet 157 forming a cleaning surface in that order. Both sides of the surface sheet 153 and the second surface sheet 157 can be used for cleaning the surface to be cleaned.

The first surface sheet 153 includes a first surface 103 arranged on the side to be cleaned and a second surface 105 arranged on the side opposite to the first surface 103 and on the water retention sheet 155 side. The second surface 105 is in contact with the water retention sheet 155. The first surface sheet 153 includes a plurality of first flap portions 111 and a plurality of second flap portions 121 in the cleaning area CR.

Since the first surface sheet 153 is composed of the cleaning sheet material 1 and the first surface sheet 153 has the same structure as the cleaning sheet 101 shown in FIG. 4, the description thereof will be omitted.
Further, since the second surface sheet 157 is also composed of the cleaning sheet material 1 and has the same configuration as the cleaning sheet 101 shown in FIG. 4, the description thereof will be omitted.

In the multi-layer cleaning sheet 151, the water-retaining sheet 155 easily applies the chemical solution held by the water-retaining sheet 155 to the dirty portion without passing through the first surface sheet 153 and the second surface sheet 157, and easily exerts the dirty portion wetting action. Become.

The cleaning sheet material produced by the manufacturing method of the present disclosure is not particularly limited, and can be used as it is as a cleaning sheet, for example, as in the first embodiment. When the cleaning sheet is used as it is as a cleaning sheet, both sides of the cleaning sheet (material for the cleaning sheet) form a cleaning surface.

Further, the cleaning sheet material produced by the manufacturing method can be used as a constituent sheet, particularly a surface sheet, which constitutes a multi-layer cleaning sheet including a plurality of layers.
The multi-layer cleaning sheet includes a stack of two or more cleaning sheet materials, for example, a first-layer cleaning sheet material and a second-layer cleaning sheet material, and a first-layer cleaning sheet. A plurality of first flap portions and a plurality of second flap portions included in the material, and a plurality of first flap portions and a plurality of second flap portions included in the material for the cleaning sheet of the second layer are duplicated. In order not to match the thickness direction of the layer cleaning sheets, for example, those laminated so as not to overlap each other can be mentioned.

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

Further, the multi-layer cleaning sheet may include an additional sheet, for example, a mesh sheet, between the material for the cleaning sheet and the water retention sheet. From the viewpoint of directly applying the chemical solution held by the water retention sheet to dust, dirt, etc. existing on the surface to be cleaned, the material for the cleaning sheet and the water retention sheet must be adjacent to each other in the thickness direction of the cleaning sheet. Is preferable.

The material of the cleaning sheet material is not particularly limited and may be a film or cloth (for example, non-woven fabric, woven fabric or knitting), for example, spunlaced non-woven fabric, air-through non-woven fabric, spunbonded non-woven fabric, SMS non-woven fabric, thermal bond. Examples thereof include non-woven fabrics, point-bonded non-woven fabrics, melt-blown non-woven fabrics, chemical-bonded non-woven fabrics, and air-laid non-woven fabrics.

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

When the cleaning sheet material is used as a constituent sheet of a multi-layer cleaning sheet including a water-retaining sheet, the cleaning sheet material may be composed of a single layer and may be composed of multiple layers. Good.
When the material for the cleaning sheet is composed of two layers or three or more layers, the first layer constituting the first surface on the surface to be cleaned and the second surface on the water retention sheet side are formed. Each with the second layer preferably contains hydrophilic fibers and hydrophobic fibers, and the proportion of hydrophobic fibers constituting the second layer is more preferably than the proportion of hydrophobic fibers constituting the first layer. Higher, more preferably 1.00 to 2.00 times higher, even more preferably 1.05 to 1.50 times higher, and even more preferably 1.10 to 1.20 times higher. By doing so, the first layer has a relatively high ability to spread the chemical solution held by the water retention sheet to the surface to be cleaned, and the second layer has a plurality of first flap portions and / or a plurality of second flaps. When the portion is folded back, the scraping property of the dirty portion is relatively excellent. Further, since the second layer having a high ratio of hydrophobic fibers 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 likely to be folded back when the cleaning sheet is used.

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

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

The water-retaining sheet is not particularly limited as long as it can retain the chemical solution, and those used as water-retaining sheets in the art can be used without limitation. For example, air-laid pulp, spunlaced non-woven fabric, and the like. It may be composed of a pulp sheet, a sheet-shaped sponge, or the like.
The water-retaining sheet may contain hydrophilic fibers to hold the chemical solution. Examples of the hydrophilic fiber include those similar to those described in the section on the surface sheet. For example, the air-laid pulp can include the synthetic fibers described in the section on the surface sheet and hydrophilic fibers (for example, pulp fibers).
As the chemical solution held by the water retention sheet, a chemical solution known in the art can be adopted.

In the manufacturing method of the present disclosure, a material for a cleaning sheet having 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 is separated from the fixed end portion by starting from one end and the other end, a linear fixed end portion connecting the one end and the other end, and one end and the other end. Any shape can be obtained without particular limitation as long as it is composed of a free end portion protruding in the direction, and the free end portion is in a direction away from the fixed end portion starting from one end and the other end. It is preferable that it is curved so as to be convex.

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

FIG. 13 is a diagram for explaining an example of a flap portion in the cleaning sheet material manufactured by the manufacturing method of the present disclosure. The flap portion 301 shown in FIG. 13A has a fixed end portion 307 that linearly connects one end 303 and the other end 305, one end 303 and the other end 305, and a fixed end portion 303 and the other end 305 as starting points. It is composed of a free end portion 309 that is curved so as to be convex in a direction away from the portion 307, the free end portion 309 is _{a semi-circular portion having a radius of curvature R 1} , and the farthest portion 311 is also. It has a radius of curvature R ₁ .

The flap portion 301 shown in FIG. 13B has a fixed end portion 307 that linearly connects one end 303 and the other end 305, one end 303 and the other end 305, and a fixed end portion 303 and the other end 305 as starting points. It is composed of a free end portion 309 that is curved so as to be convex in a direction away from the portion 307, the free end portion 309 is an elliptical arc portion, and the farthest portion 311 has a radius of curvature R ₂ .

The flap portion 301 shown in FIG. 13C has one end 303 and the other end 305, a fixed end portion 307 that linearly connects one end 303 and the other end 305, two straight portions, and an elliptical arc between them. It is composed of a free end portion 309 consists of parts, and the farthest portion 311 has a radius of curvature R _3.
The flap portion 301 shown in FIG. 13D is a free end composed of one end 303 and the other end 305, a fixed end portion 307 that linearly connects one end 303 and the other end 305, and three straight portions. It is composed of a portion 309, and the farthest portion 311 is composed of a straight portion having an intersection angle of 0 ° with the fixed end portion 307. The flap portion 201 shown in FIG. 12 also corresponds to the flap portion in the cleaning sheet material manufactured by the manufacturing method of the present disclosure.

In the manufacturing method of the present disclosure, it is possible to form a cleaning sheet material having a plurality of first flap portions and a plurality of second flap portions having an arbitrary size, and a plurality of first flaps. A cleaning sheet including a first flap portion having a relatively small area arranged inward and a first flap portion having a relatively large area arranged outward in the first direction. It is preferable to form materials. By doing so, in the cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) to be formed, the first flap portion having a relatively large area, which is arranged on the outside, is relatively large. By involving the dust connecting body during the reciprocating motion, it becomes easier to hold the enlarged dust connecting body. Further, the first flap portion having a small area arranged inside performs a relatively small reciprocating motion, and the first flap portion having a large area arranged outside captures dust left behind. be able to.

Further, for the same reason, the cleaning sheet material manufactured by the manufacturing method of the present disclosure is arranged inward in the first direction as a plurality of second flap portions, and has a relatively small area. It is preferable to have two flap portions and a second flap portion having a relatively large area arranged on the outside.

In the manufacturing method of the present disclosure, in the flap portion forming step, a plurality of first flap portions are formed, and the downstream end portion of each of the plurality of first flap portions is one in the orthogonal direction with respect to the upstream end portion. It is preferable to form it so that it is arranged in the direction. Further, the plurality of second flap portions are formed so that the downstream end portions of the plurality of second flap portions are arranged in the other direction in the orthogonal direction with respect to the upstream end portion thereof. Is preferable. By doing so, when the material for the cleaning sheet is manufactured, specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are less likely to be 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 is continuously connected to each of the plurality of material regions in the plane direction of the plurality of material regions. It may be formed by cutting so as to penetrate the material region, and may be formed by cutting so as to penetrate the plurality of material regions intermittently in the plane direction. Manufacturing of materials for cleaning sheets by forming at least a part of a plurality of first flap portions and a plurality of second flap portions by cutting them so as to intermittently penetrate the plurality of material regions in the plane direction. Specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are less likely to be 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 is penetrated through each of the plurality of material regions in the thickness direction of the plurality of material regions. It may be formed by cutting so as not to prevent it. By doing so, when the material for the cleaning sheet is manufactured, specifically, when the strip-shaped non-woven fabric that has undergone the flap portion forming step is conveyed in the conveying direction, the first flap portion and the second flap portion are less likely to be 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, and 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 material for the cleaning sheet. It is preferable to form materials for cleaning sheets that overlap in the direction. By doing so, the formed cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) exerts a small dust taking-in action, a large dust entanglement action, a dust connecting body 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 arranged adjacent to each other, the first flap portion and the second flap portion are the thickness of the material for the cleaning sheet. It is preferable to form materials for cleaning sheets that overlap in the direction. By doing so, the formed cleaning sheet material (single-layer cleaning sheet, multi-layer cleaning sheet) exerts a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action. can do.

The cleaning sheet material manufactured by the manufacturing method of the present disclosure is to be cleaned by attaching a single-layer cleaning sheet composed of the cleaning sheet material or a multi-layer cleaning sheet containing the cleaning sheet material to the cleaning tool. 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 highly frictional portion (for example, a dirty portion). The flap portion is folded back in the other direction with the first surface inside (in the present specification, "the flap portion is folded back in the other direction with the first surface inside" is simply "flap portion". Is sometimes called "folded back (in the other direction)"), and a first opening is formed in the place where the first flap part of the cleaning sheet (multi-layer cleaning sheet) was present, and small dust is formed. Can be taken into the inside (for example, between the cleaning sheet (multi-layer cleaning sheet) and the cleaning tool, between the cleaning sheet (multi-layer cleaning sheet) and the water retention sheet, etc.) from the first opening. (In the present specification, the action of the flap portion taking in small dust from the opening to the inside is referred to as "small dust taking-in action"). Since the small dust taking-in action is highest near the fixed end of the first opening, it tends to be higher when the cleaning sheet (multi-layer cleaning sheet) is moved in one direction. The small dust is also taken into the fibers of the non-woven fabric and removed.

Further, the cleaning sheet (multi-layer cleaning sheet) is moved in one direction in the first direction, the first flap portion is folded back in the other direction, and the cleaning sheet (multi-layer cleaning sheet) is moved in the other direction in the first direction. When moving and performing a reciprocating motion with the first flap portion returning in one direction, the first flap portion can entangle large dust (in the present specification, the flap portion performs the reciprocating motion). Entangling large dust is called "large dust entanglement action"). In addition, since the thickness of the cleaning sheet (multi-layer cleaning sheet) becomes thicker in the large dust entanglement action, when the first flap portion is folded back in the other direction, that is, the cleaning sheet (multi-layer cleaning sheet) is used. It tends to be higher when moved in one direction.

Further, when the surface to be cleaned is cleaned using the cleaning sheet (multi-layer cleaning sheet), dust such as hair and dust existing on the surface to be cleaned is first removed from the periphery of the cleaning sheet (multi-layer cleaning sheet). Dust that is caught in the part and not caught in the peripheral part of the cleaning sheet (multi-layer cleaning sheet) tends to move to the central part of the cleaning sheet (multi-layer cleaning sheet). Therefore, 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 peripheral edge of the cleaning sheet (multi-layer cleaning sheet) and the surface to be cleaned There is a tendency for dust such as hair and dust to be connected to each other to form a rod-shaped dust connector. The first flap portion keeps holding the dust connecting body when performing the reciprocating motion (hereinafter, the action of the flap portion keeping holding the dust connecting body when performing the reciprocating motion is referred to as "dust connecting body holding action". May be referred to as). In addition, since the thickness of the cleaning sheet (multi-layer cleaning sheet) becomes thicker, the dust connecting body holding action is performed when the first flap portion is folded back in the other direction, that is, the cleaning sheet (multi-layer cleaning sheet). Tends to be higher when moving in one direction.

Further, when the first flap portion is folded back, that is, when the cleaning sheet (multi-layer cleaning sheet) is moved in one direction, the cleaning sheet (multi-layer cleaning sheet) is folded back into the first flap portion. Since it has a convex region that overlaps in the thickness direction, a first opening, and a concave region that overlaps in the thickness direction, the cleaning sheet (double glazing). The layer cleaning sheet) improves the wiping property of dirt (for example, solid sebum dirt) (in the present specification, the flap portion is folded back to form an uneven region to wipe off the dirt. "Action").

Focusing on the plurality of second flap portions, similar to the plurality of first flap portions, they have a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action. When the cleaning sheet (multi-layer cleaning sheet) is moved in the other direction in the first direction, it tends to be higher.
From the above, the cleaning sheet (multi-layer cleaning sheet) has a small dust taking-in action, a large dust entanglement action, and a dust connecting body holding action when moved in either one direction or the other direction in the first direction. , And can exhibit a dirt wiping action.

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

In the manufacturing method of the present disclosure, as a plurality of first flap portions and a plurality of second flap portions arranged adjacent to each other, the free end portion of the first flap portion intersects the free end portion of the second flap portion. Although not, it is preferable to 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) exerts a small dust taking-in action, a large dust entanglement action, a dust connecting body holding action, and a dirt wiping action. can do.

1 Materials for cleaning sheet 3 Material area 5 Strip-shaped non-woven fabric 51 Belt conveyor 53 Belt conveyor 55 1st cutter part 57 Cutter roll 59 Blade 61 Anvil roll 63 Belt conveyor 65 2nd cutter part 67 Cutter roll 69 Blade 71 Anvil roll 101 Cleaning sheet 103 1st surface 105 2nd surface 111 1st flap part 113 1st end 115 1st other end 117 1st fixed end part 119 1st free end part 121 2nd flap part 123 2nd end 125 2nd other end 127th 2 Fixed end 129 Second free end MD Conveyor direction CD Orthogonal direction CD ₁ Orthogonal direction One direction CD ₂ Orthogonal direction Other direction CR Cleaning area P Plane direction D ₁ First direction D ₁₁ First direction One direction D ₁₂ First Direction Other direction D ₂ Second direction D ₂₁ Second direction One direction D ₂₂ Second direction Other direction T Thickness direction MR1 First movable area MR2 Second movable area L Longitudinal direction S Short direction

Claims (3)

It is a method of continuously manufacturing materials for cleaning sheets.
While transporting the strip-shaped non-woven fabric having a plurality of material regions constituting the cleaning sheet material in the transport direction, each of the plurality of material regions projects in one direction orthogonal to the transport direction. , A plurality of first flap portions, each of which does not project in the transport direction, and a plurality of second flap portions, each of which projects in the other direction in the orthogonal direction, each of which is said. Flap portion forming step, forming a non-protruding object in the transport direction,
The strip-shaped non-woven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and the plurality of materials for the cleaning sheet, each of which is orthogonal to each other in the first direction and the second direction. A plurality of first flap portions having a thickness direction and protruding in one direction of the first direction corresponding to the one direction in the orthogonal direction and not protruding in one direction of 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 in the orthogonal direction and do not protrude in one direction of the second direction corresponding to the transport direction. Cleaning sheet material forming step, forming
Only including,
In the flap portion forming step, the plurality of flap portions are arranged so that the downstream end portions of the plurality of first flap portions are arranged in the one direction orthogonal to the upstream end portion. The plurality of first flap portions and the plurality of second flap portions so that each downstream end portion of the second flap portion is arranged in the other direction in the orthogonal direction with respect to the upstream end portion thereof. Form a flap,
The method. It is a method of continuously manufacturing materials for cleaning sheets.
While transporting the strip-shaped non-woven fabric having a plurality of material regions constituting the cleaning sheet material in the transport direction, each of the plurality of material regions projects in one direction orthogonal to the transport direction. , A plurality of first flap portions, each of which does not project in the transport direction, and a plurality of second flap portions, each of which projects in the other direction in the orthogonal direction, each of which is said. Flap portion forming step, forming a non-protruding object in the transport direction,
The strip-shaped non-woven fabric that has undergone the flap portion forming step is cut into each of the plurality of material regions, and the plurality of materials for the cleaning sheet, each of which is orthogonal to each other in the first direction and the second direction. A plurality of first flap portions having a thickness direction and protruding in one direction of the first direction corresponding to the one direction in the orthogonal direction and not protruding in one direction of 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 in the orthogonal direction and do not protrude in one direction of the second direction corresponding to the transport direction. Cleaning sheet material forming step, forming
Only including,
In the flap portion forming step, 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.
The method. In the flap portion forming step, each of the plurality of first flap portion and the plurality of second flaps, forming than to intermittently cut each of the plurality of material regions, according to claim 1 Method.

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