TWI818148B - clean flakes - Google Patents

Abstract

An object of the present invention is to provide a cleaning sheet with excellent cleaning performance on a surface to be cleaned. The cleaning sheet of the present invention has the following structure. The cleaning sheet (1) is characterized in that the fixed ends (3) of each of the plurality of sheet portions (21, 31, 51, 61) are connected by a fixed end extending in the direction along the first direction ( _D1 ) part (71) and connected to the basic sheet part (13a, 13b); at least a part of the plurality of sheet parts (21, etc.) is formed as a free end part (5) in a direction parallel to the fixed end connection part (71) The elongation length is longer than the length of the fixed end portion (3) in the direction parallel to the fixed end connecting portion (71); at least a part of the free ends (5) of the plurality of sheet portions (21, etc.) are directed toward the first The 2-direction (D ₂ ) reciprocating side extends in the direction along the 1st direction (D ₁ ), and is connected by a free end connecting portion (73) including a plurality of free end connecting portions (75a, 77a, 79a, 81a, 83a). , and a part is connected to the free end portion (5) of the sheet portion adjacent to the second direction (D ₂ ) among the plurality of sheet portions (21, etc.).

Description

clean flakes

The present invention relates to cleaning sheets.

Due to rising hygiene awareness, disposable cleaning sheets are now available on the market. Furthermore, various types of cleaning sheets have been developed. For example, Patent Document 1 discloses a disposable cleaning tool that is made of paper, nonwoven fabric, or plastic resin and has a three-dimensional structure composed of cell walls such as honeycomb or lattice. A cleaning tool, specifically, paper, nonwoven fabric, or plastic resin sheets are provided with strip-shaped bonding portions at appropriate intervals, a plurality of sheets are laminated while sequentially bonding, and the end edges on the central axis side of the obtained laminated body are bonded Then, it is formed by spreading the laminated body 360 degrees and joining the front and back sheets of the laminated body. [Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2000-229053

[Problem to be solved by the invention]

The disposable cleaning tool described in Patent Document 1 is obtained by arranging a plurality of sheets with strip-shaped joints at appropriate intervals and then sequentially joining and stacking the plurality of sheets. The plurality of sheets constitutes a disposable cleaning tool. The parts on the surface of the cleaning tool contribute to the cleaning of the surface to be cleaned, but among the plurality of sheets, the parts constituting the interior of the disposable cleaning tool are not easy to help the cleaning of the surface to be cleaned. Therefore, an object of the present invention is to provide a cleaning sheet that is excellent in cleaning properties of a surface to be cleaned. [Technical means to solve problems]

The inventors of the present invention have developed a cleaning sheet that includes a base sheet portion and a cleaning sheet portion including a plurality of sheet portions, and has a first direction and a second direction constituting a circumferential direction of the first direction. It is characterized in that the plurality of sheets are The portions extend in the direction along the first direction, and each of them has a fixed end portion and a free end portion; the fixed end portion of each of the plurality of sheet portions extends in the direction along the first direction. The fixed end connecting portion is connected to the base sheet portion; at least a part of the plurality of sheet portions is configured such that the elongation length of the free end portion in a direction parallel to the fixed end connecting portion is longer than that of the fixed end connecting portion. The length of the fixed end portion in the parallel direction is longer; the free end portions of at least a part of the plurality of sheet portions extend in the direction of the first direction while reciprocating in the second direction, and by including the plurality of free ends A part of the free end connecting portion of the connecting portion is connected to the free end portion of the sheet portion adjacent to the second direction among the plurality of sheet portions. [Effects of the invention]

The cleaning sheet of the present invention has excellent cleaning performance on the surface to be cleaned.

[Definition] ・About the "non-expanded state" and "expanded state" of the cleaning sheet In this manual, in principle, the "non-expanded state" and "expanded state" of the cleaning sheet are terms used when the cleaning sheet can adopt two different states. Specifically, the "non-expanded state" refers to the state in which the cleaning sheet is not expanded and is used for storage, etc., while the "expanded state" refers to the state of the cleaning sheet when used for cleaning the surface to be cleaned. In addition, in this manual, the cleaning sheet includes those that do not adopt the "non-expanded state". When the cleaning sheet is not in a "non-expanded state", the cleaning sheet will be described in a state equivalent to the expanded state even if it is not specifically mentioned. Furthermore, even if the cleaning sheet does not adopt the "non-expanded state", from the viewpoint of easy understanding, the state used for cleaning the surface to be cleaned may be described as the "expanded state".

・"1st direction", "2nd direction", "orthogonal direction" and "thickness direction" In this specification, the "first direction" is divided into one first direction and the other first direction. The "second direction" is a direction constituting the peripheral direction of the first direction, and is divided into one second direction and the other second direction. The "orthogonal direction" is a direction orthogonal to the first direction and is arranged on the base sheet portion. The "orthogonal direction" is divided into one orthogonal direction and the other orthogonal direction. The "thickness direction" is a direction orthogonal to the first direction and the orthogonal direction. The "thickness direction" is divided into one thickness direction and the other thickness direction.

・About the "fixed end", "central part" and "free end" of the plurality of sheet parts In this specification, the "fixed end", "central part" and "free end" of the plurality of sheet portions are terms that define the first direction and the orthogonal orthogonal planes and intersections of the plurality of sheet portions respectively. In addition, the above-mentioned "free end" and "fixed end" respectively refer to the end area on the side to be cleaned and the end area on the opposite side at the above-mentioned intersection, and the "central part" refers to the above-mentioned "free end" ” and the “fixed end” area.

The above-mentioned "fixed end", "central part" and "free end" respectively in each of the above-mentioned plurality of sheet parts refer to the above-mentioned intersection part with a length ratio of preferably 40%:20%:40%, more preferably A length ratio of 30%:40%:30%, and preferably a length ratio of 20%:60%:20%. In addition, in the case where at least part of the plurality of sheet portions is not fixed in the first direction and the length of the intersection portion is not fixed (when the positions in the first direction are different, the length of the intersection portion is different), the above-mentioned "fixed end" , the length of the "central part" and the "free end" are not fixed either. In addition, in this specification, the portions of the base sheet portion corresponding to the fixed end portion, the center portion, and the free end portion of the adjacent sheet portions are respectively referred to as the fixed end portion, the center portion, and the free end portion of the base sheet portion.

・About the "reciprocating structure" of the plurality of thin parts In this specification, the "reciprocating structure" refers to a structure adopted by at least a part of the plurality of sheet parts. The above-mentioned "reciprocating structure" means that the free end portion of the sheet portion constituting the plurality of sheet portions faces one of the second direction (the second direction and the second direction) and the direction along the first direction (preferably the first direction). The other side (the other direction of the second direction) reciprocates (preferably, it reciprocates a plurality of times).

The reciprocating structure is not limited to the one in which the edge on the free end side of the sheet portion forms a wave shape. However, from the viewpoint of easy understanding, it may be described using terms such as wave length, wave height, and period. In addition, the wave length refers to the length from the end edge on the free end side of the sheet portion from the reference point of a cycle with a reciprocating structure to the reference point of the next cycle in the reciprocating direction (for example, as shown in Figure 28 From the first part 805 of the first loop 801 closest to the second direction D ₂₁ to the second part 807 of the second loop 803 adjacent to the first loop 801 closest to the second direction D ₂₁ distance M). In addition, the wave height refers to the maximum length in the second direction in a cycle having a reciprocating structure (for example, the maximum length N of the first cycle 801 shown in FIG. 28). In addition, in the above-mentioned reciprocating structure, the phase difference refers to the reference point of the reciprocating structure (for example, the part closest to the second direction) between the plurality of sheet parts (for example, two adjacent sheet parts). The position deviates in a direction along the first direction (preferably the first direction).

In this specification, the reciprocating structure of one sheet portion is different from the reciprocating structure of the other sheet portion, which refers to at least one difference in the above-mentioned wave length, wave height, and phase. Preferably, the phase is different, and more preferably, the phase and the wave are different. Different lengths, and even better, different phases, wave lengths and wave heights. This is based on the effect of the present invention. In addition, the thin section forming the reciprocating structure may be called a "wall surface".

・"Cleaning sheet part angle" In this specification, the "cleaning sheet portion angle" refers to the angle in the second direction of the cleaning sheet portion of the cleaning sheet in the unfolded state. For example, when the cleaning sheet has a single cleaning sheet part, the cleaning sheet part angle refers to the angle formed by the base sheet part across the plurality of sheet parts. In addition, when the base sheet portion is located on a plane, the angle of the cleaning sheet portion is 180°. Furthermore, for example, when the cleaning sheet includes a plurality of cleaning sheet portions, each of the plurality of cleaning sheet portions has a cleaning sheet portion angle.

・About the "verbosity" of the thin section In this specification, the length of the sheet portion refers to the apparent length of the sheet portion in a given direction (for example, the length of the folded sheet portion in the folded state) divided by the length of the sheet portion in the given direction. The actual length of the sheet portion (for example, the length of the folded sheet portion in the un-folded state). Examples of the above-mentioned predetermined direction include a direction along the first direction, the first direction, and the like. As the redundancy increases, the wave length, wave height, etc. of the reciprocating structure of the plurality of sheet portions constituting the cleaning sheet tend to become larger, and the cleaning sheet portion angle (more precisely, the cleaning sheet portion angle of each sheet portion) changes. big tendency.

・"Along the direction of the established direction" In this specification, "direction along a given direction" means that it is preferably less than 45°, more preferably less than 30°, still more preferably less than 20°, and still more preferably less than 5° with the given direction. The direction of the intersection angle below °. In addition, in this specification, "a direction parallel to a predetermined direction" means a direction whose intersection angle with the predetermined direction is 5° or less. Examples of the above-mentioned predetermined direction include a first direction, an orthogonal direction, a thickness direction, a second direction, and the like.

・About the "inside" and "outside" of multiple sheet parts In this specification, the terms "inside" and "outside" of the plurality of sheet portions are terms indicating the relative positions of the plurality of sheet portions. Specifically, the arrangement of a certain sheet part further inside than the other sheet parts means that the certain sheet part is farther from the base sheet part than the other sheet parts. Similarly, when a certain sheet part is arranged outside other sheet parts, it means that a certain sheet part is closer to the base sheet part than other sheet parts.

・About the "outside" and "inside" of multiple sheet parts In this specification, the "outside" and "inner surface" of each of the plurality of sheet parts refer to the surface on the side of the base sheet part (if there are multiple base sheet parts, the closest surface on the side of the base sheet part). ) and its opposite.

・The "extension length" of the free end and the "length" of the fixed end in the direction parallel to the fixed end connection part In this specification, the "extended length" of the free end in a direction parallel to the fixed end connection means the length between the free end and the fixed end connection when the free end is extended and the "reciprocating structure" described below is released. The length of the parallel direction. In this specification, the "length" of the fixed end in a direction parallel to the fixed end connecting portion refers to the literal meaning of the length of the fixed end in a direction parallel to the fixed end connecting portion.

Specifically, the present invention relates to the following aspects. [Pattern 1] A cleaning sheet includes a base sheet portion and a cleaning sheet portion including a plurality of sheet portions, and has a first direction and a second direction constituting a circumferential direction of the first direction; characterized in that the plurality of sheet portions are oriented along the first direction. extends in the direction of 1 direction, and each of them has a fixed end portion and a free end portion; the fixed end portion of each of the plurality of sheet portions is connected by a fixed end connecting portion extending in the direction of the 1st direction, And connected to the above-mentioned basic sheet part; at least a part of the above-mentioned plurality of sheet parts is configured such that the elongation length of the above-mentioned free end part in a direction parallel to the above-mentioned fixed end connection part is longer than the above-mentioned extension length in a direction parallel to the above-mentioned fixed end connection part. The length of the fixed end portion is longer; the free ends of at least a part of the plurality of sheet portions extend in the direction along the first direction while reciprocating in the second direction, and are connected by free ends including a plurality of free ends. A part of the connecting portion is connected to the free end portion of the sheet portion adjacent to the second direction among the plurality of sheet portions.

In the above-mentioned cleaning sheet, in the cleaning sheet portion constituting the cleaning sheet, the fixed end portions of each of the plurality of sheet portions are connected to the base sheet portion by a fixed end connecting portion extending in a direction along the first direction; and At least a part of the plurality of sheet portions is such that an extension length of the free end portion in a direction parallel to the fixed end connecting portion is greater than a length of the fixed end portion in a direction parallel to the fixed end connecting portion. A "free end extended length structure" configured in a long manner; a "reciprocating structure" in which at least part of the free ends of the plurality of sheet parts alternately reciprocate in one direction of the second direction and in the other direction of the second direction; and the "reciprocating structure" The reciprocating structure is a "partial connection structure" in which a portion of the sheet portion adjacent to the second direction is connected.

Therefore, for example, when the surface to be cleaned is a flat surface, the plurality of sheet parts deform irregularly when in contact with the surface to be cleaned due to the above-mentioned "free end extended length structure", "reciprocating structure" and "partial connection structure". A certain area (hereinafter referred to as the "first area") of the plurality of sheet portions is exposed, the first area is in contact with the surface to be cleaned, and the first area can clean the surface to be cleaned.

If the cleaning sheet is separated from the surface to be cleaned, the plurality of sheet portions can return to their original shape due to the restoring force derived from the reciprocating structure and the partial connection of the plurality of sheet portions (hereinafter, cleaning sheets are sometimes referred to as The return of the sheet to its original shape is called "shape recovery"). Next, when the same surface of the cleaning sheet is brought into contact with the surface to be cleaned, the plurality of sheet portions are irregularly deformed, exposing a region different from the first region (hereinafter referred to as the "second region"). The second region is different from the first region. The surface to be cleaned is in contact with the surface to be cleaned, and the second area can clean the surface to be cleaned.

In this way, even if the cleaning sheet is repeatedly brought into contact with the surface to be cleaned and then moved away from the surface, new areas of the plurality of sheet parts can be exposed, and the new area can be used to clean the surface to be cleaned. Therefore, the cleaning sheet has excellent cleaning performance on the surface to be cleaned (hereinafter, the cleaning sheet's ability to expose new areas in multiple sheet portions is sometimes referred to as "new area exposure"). Furthermore, even when the cleaning sheet is moved left and right while the cleaning sheet is in contact with the surface to be cleaned, the plurality of sheet portions can still clean the surface to be cleaned while exerting new area exposure.

Furthermore, even if the surface to be cleaned is a three-dimensional surface (for example, a concave and convex surface), when the cleaning sheet is brought into contact with the surface to be cleaned, the plurality of sheet portions can still follow the three-dimensional shape of the surface to be cleaned, and when the cleaning sheet is moved, The cleaning sheet can utilize its softness and shape recovery properties to follow the shape of the surface to be cleaned. Furthermore, when the cleaning sheet is moved, the cleaning sheet can exhibit the ability to expose new areas and use the new areas to clean the surface to be cleaned. Due to the above, the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

In addition, when the plurality of sheet portions do not have the free end extension length structure, for example, when the extension length of the free end portion is configured to be the same as the length of the fixed end portion, the plurality of sheet portions are in contact with the surface to be cleaned. It is not easy to deform irregularly, and it tends to be difficult to exert the above-mentioned new area exposure.

[Pattern 2] The cleaning sheet according to aspect 1, wherein the plurality of sheet portions include integrated fixed end portions in which the fixed end portions are integrated, and the integrated fixed end portions are connected to the base sheet portion.

In the above-mentioned cleaning sheet, since the plurality of sheet parts are fixed to the base sheet part through the integrated fixed ends, the parts that are not connected to the integrated fixed ends of the base sheet part have excellent flexibility, and the cleaning sheet can easily conform to the surface to be cleaned. Deformation, not easy to damage the surface to be cleaned.

[Pattern 3] The cleaning sheet according to aspect 2, wherein the base sheet part is divided into a base sheet part 1 and a base sheet part 2 by the integrated fixed end part, and the base sheet part 1 and the base sheet part 2 are divided into a base sheet part 1 and a base sheet part 2. The angle of the cleaning sheet portion of the above-mentioned cleaning sheet portion formed by the two parts is 150° or more and less than 360°.

In the above-mentioned cleaning sheet, since the partial angle of the cleaning sheet is within a predetermined range, a wide surface to be cleaned can be easily cleaned using the cleaning sheet, and the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

[Pattern 4] The cleaning sheet according to any one of aspects 1 to 3, wherein the base sheet portion is further provided with a grip portion for gripping by a cleaning tool or a user.

Since the cleaning sheet has a predetermined holding portion, the shape of the cleaning sheet is easily maintained when the cleaning sheet is used, and the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

[Pattern 5] The cleaning sheet according to aspect 2, wherein the base sheet part is divided into a base sheet part 1 and a base sheet part 2 by the integrated fixed end part, and the base sheet part 1 and the base sheet part 2 are divided into a base sheet part 1 and a base sheet part 2. The two-part cleaning sheet portion has a cleaning sheet portion angle of 360°, and a grip portion for a cleaning tool or a user is formed between the first base sheet portion and the second base sheet portion.

The above-mentioned cleaning sheet has a cleaning sheet portion with an angle of 360°, and a gripping portion for a cleaning tool or a user to grip is formed between the first portion of the base sheet and the second portion of the base sheet. Therefore, the user can insert the cleaning tool into the above-mentioned holding part, or the user can insert part of the body (for example, hands, feet, etc.) into the above-mentioned holding part, and use the cleaning sheet to easily clean a wide cleaning surface, and the above-mentioned The cleaning sheet has excellent cleaning performance on the surface to be cleaned.

[Pattern 6] The cleaning sheet according to aspect 1, wherein the cleaning sheet includes a plurality of cleaning sheet portions, and the plurality of cleaning sheet portions are connected so that the base sheet portions face each other.

The above-mentioned cleaning sheet includes a plurality of cleaning sheet parts, and the basic sheet parts are connected to each other. Therefore, the plurality of cleaning sheet portions expand in the second direction, that is, the cleaning sheet can expand the angle of the cleaning sheet portion, and the cleaning sheet can easily clean a wide cleaning surface, and the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

[Mode 7] The cleaning sheet according to aspect 6, wherein a grip portion for a cleaning tool or a user to hold is provided between the base sheet portions.

Since the above-mentioned cleaning sheet has a predetermined holding part between the basic sheet parts, the user can insert a cleaning tool into the above-mentioned holding part, or the user can insert part of the body into the above-mentioned holding part to use the cleaning sheet. Furthermore, the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

[Pattern 8] The cleaning sheet according to aspect 7, wherein the holding portion has an insertion opening opening in the first direction and extends in a direction along the first direction.

In the cleaning sheet, since the holding portion has an insertion port opening in the first direction and extends in the first direction, a part of the cleaning tool or the user's body is disposed in the first direction of the cleaning sheet. Therefore, when inserting the cleaning tool into the holding part to use the cleaning sheet, the user can easily insert the cleaning tool into the holding part, and when cleaning using the cleaning sheet, the cleaning tool is less likely to come into contact with the surface to be cleaned. Moreover, when the user inserts a part of the body into the holding part to use the cleaning sheet, it is easy for the user to insert a part of the body into the holding part, and when cleaning with the cleaning sheet, a part of the user's body is difficult to contact with the cleaning sheet. Cleaning surface contact.

[Pattern 9] In the cleaning sheet of aspect 8, the insertion opening is provided with an extension portion in at least a portion of the plurality of cleaning sheet portions, and the extension portion extends away from the plurality of sheet portions in the first direction.

The above-mentioned cleaning sheet has a predetermined extension part. Therefore, when the user inserts the cleaning tool into the grip part to use the cleaning sheet, it is easy for the user to insert the cleaning tool into the grip part, and when the user inserts part of the body into the grip part to use the cleaning sheet, it is easy for the user to insert the cleaning tool into the grip part to use the cleaning sheet. Insert part of your body into the grip.

[Pattern 10] The cleaning sheet according to any one of aspects 6 to 9, wherein in each of the plurality of cleaning sheet portions, the plurality of sheet portions are provided with integrated fixed end portions in which the fixed end portions are integrated, and the one-piece The fixed end is connected to the above-mentioned base sheet part.

In the above-mentioned cleaning sheet, since each of the plurality of cleaning sheet portions is fixed to the base sheet portion through the integrated fixed end, the portion of the base sheet portion that is not connected to the integrated fixed end has excellent flexibility and can be cleaned The sheet is easily deformed according to the surface to be cleaned and is not easy to damage the surface to be cleaned.

[Pattern 11] The cleaning sheet according to any one of aspects 1 to 10, wherein a cleaning tool or a grip for the user to hold is provided between the base sheet portion and two adjacent sheet portions among the plurality of sheet portions. Hold the Ministry.

Since the above-mentioned cleaning sheet has a predetermined holding part, the user can insert a cleaning tool into the above-mentioned holding part, or the user can insert part of the body into the above-mentioned holding part to use the above-mentioned cleaning sheet, and the above-mentioned cleaning sheet can be used for cleaning Excellent surface cleaning performance.

[Pattern 12] The cleaning sheet according to any one of aspects 1 to 11, wherein the cleaning sheet is configured to be in a non-expanded state.

Since the cleaning sheet is configured to be in a non-deployed state, the cleaning sheet can be simplified before or after use.

[Pattern 13] The cleaning sheet according to any one of aspects 1 to 12, wherein at least a part of the plurality of sheet portions is alternately folded in a direction along the first direction by a plurality of folding portions.

Since at least part of the plurality of sheet portions of the cleaning sheet is folded, the folded sheet portions can be further expanded in the second direction. Therefore, in a small number of sheet portions, the angle of the cleaning sheet portion can be further expanded.

[Pattern 14] The cleaning sheet according to any one of aspects 1 to 13, wherein at least part of the plurality of sheet portions is provided with a plurality of first top portions protruding toward one side in the second direction, and each of the plurality of top portions is provided with a first top surface. and a plurality of second tops protruding toward the other side of the second direction, each of which has a second top surface; the plurality of free end connecting portions are arranged on each of the first top surface and the second top surface. .

In the above-mentioned cleaning sheet, since the plurality of free end connecting portions constituting the free end connecting portion are arranged on each of the first top surface and the second top surface, in the cleaning sheet, the opening forming the three-dimensional structure can be enlarged, and The plurality of sheet portions are spread further in the second direction, so that the angle of the cleaning sheet portion can be further expanded for a small number of sheet portions.

[Pattern 15] The cleaning sheet according to aspect 14, wherein in the sheet portion to which the first top surface and the second top surface belong, the total area of the plurality of first top surfaces is 50% or more and 100% or less of the area of the sheet portion. , and the total area of the plurality of second top surfaces is not less than 50% and not more than 100% of the area of the above-mentioned sheet portion.

In the above-mentioned cleaning sheet, since the total area of the first top surface and the total area of the second top surface are within a predetermined range, the plurality of free end connecting portions constituting the free end connecting portion can be arranged with a high degree of freedom, and the cleaning sheet can be Some angles are wider. Moreover, when the connection part is a joint part joined by an adhesive, the adhesive is unlikely to exist in parts other than the first top surface and the second top surface due to movement, positional deviation, etc. of the adhesive.

[Mode 16] A cleaning sheet includes a cleaning sheet portion including a base sheet portion and a plurality of sheet portions, and has a first direction and a second direction constituting a circumferential direction of the first direction; characterized in that the plurality of sheet portions are oriented along the first direction. extends in the direction of 1 direction, and each of them has a fixed end portion and a free end portion; the fixed end portion of each of the plurality of sheet portions is connected by a fixed end connecting portion extending in the direction of the 1st direction, And connected to the above-mentioned basic sheet part; at least a part of the above-mentioned plurality of sheet parts is configured such that the elongation length of the above-mentioned free end part in a direction parallel to the above-mentioned fixed end connection part is longer than the above-mentioned extension length in a direction parallel to the above-mentioned fixed end connection part. The length of the fixed end is longer; the free end of at least a part of the plurality of sheet portions is connected to the free end of the sheet portion adjacent to the second direction among the plurality of sheet portions through a free end connecting portion. part and has a reciprocating structure. The above-mentioned cleaning sheet has the same effect as the cleaning sheet described in aspect 1.

[Mode 17] The cleaning sheet according to aspect 16, wherein the two sheet portions connected by the free end connecting portion have mutually different reciprocating structures. In the above-mentioned cleaning sheet, since the two sheet portions connected by the free end connecting portion have mutually different reciprocating structures, the cleaning sheet is excellent in exposing new areas and has excellent cleaning performance on the surface to be cleaned.

Hereinafter, the cleaning sheet of the present invention will be described in detail. ＜＜First Embodiment＞＞ FIGS. 1 to 9 are diagrams for explaining the cleaning sheet 1 according to one embodiment of the present invention (hereinafter referred to as the “first embodiment”). Specifically, FIG. 1 is a perspective view of the front, bottom and right side of the cleaning sheet 1 attached to the handheld cleaning tool 251 in the unfolded state. FIG. 2 is a perspective view of the back, bottom and left side of the cleaning sheet 1 attached to the handheld cleaning tool 251 in the unfolded state. 3 and 4 are respectively a front view and a rear view of the cleaning sheet 1 in an unfolded state attached to the handheld cleaning tool 251. FIG. 5 is a perspective view of the front, planar and left side of the cleaning sheet 1 in a non-deployed state. FIG. 6 is a diagram for explaining the second sheet portion 31. FIG. 7 is a diagram for explaining the first sheet portion 21. FIG. 8 is a left side view of the cleaning sheet 1 in an unexpanded state. FIG. 9 is a diagram illustrating a method of manufacturing the cleaning sheet 1 .

In addition, in the unfolded state, the cleaning sheet 1 will be separated from the downstream of one thickness direction _T1 , the downstream of the other thickness direction _T2 , the downstream of the first direction _D11 , and the other first direction D. The state of the cleaning sheet 1 is observed downstream of ₁₂ and treated as front, back, flat and bottom respectively. In addition, the cleaning sheet 1 in the non-expanded state is the same as the cleaning sheet 1 in the expanded state except that the base sheet first portion 13a side is the front surface and the base sheet second portion 13b side is the back surface.

The cleaning sheet 1 according to the first embodiment is a cleaning sheet that is attached to a hand-held cleaning tool 251 and used. Furthermore, the cleaning sheet 1 according to the first embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 can be formed into an unfolded state and an unfolded state. Specifically, it can be formed into a single cleaning sheet portion 17 in the unfolded state and a single laminated structure 9 in the unexpanded state.

The cleaning sheet 1 (cleaning sheet portion 17) in the unfolded state has a first direction D ₁ , an orthogonal direction D _C and a thickness direction T, and a second direction D ₂ constituting a circumferential direction of the first direction D ₁ . The first direction D ₁ is divided into a first direction D ₁₁ and the other first direction D ₁₂ which are opposite to each other. The orthogonal direction D _C is divided into an orthogonal direction D _C1 which is opposite to each other. and the other orthogonal direction D _C2 , the thickness direction T is divided into the first thickness direction T ₁ and the other thickness direction T ₂ which are opposite directions. The second direction D ₂ is divided into a first second direction D ₂₁ and a second second direction D ₂₂ which are opposite directions. In addition, in a plan view, the second direction D ₂ coincides with the orthogonal direction _DC .

In addition, the cleaning sheet 1 in the non-expanded state (laminated structure 9) and the cleaning sheet 1 in the expanded state (cleaning sheet portion 17) have the first direction D ₁ so that the base sheet second portion 13b described below has the same direction. , the orthogonal direction D _C and the thickness direction T, and the second direction D ₂ .

In the non-deployed state, the laminated structure 9 has a fixed end 3 and a free end 5. Each of the fixed end 3 and the free end 5 extends in a direction parallel to the first direction D1. The fixed end 3 and the free end 5 extend in a direction parallel to the first direction _D1 . The free end portion 5 is spaced apart from the center portion 7 in the orthogonal direction _DC .

The cleaning sheet 1 (laminated structure 9, see FIG. 5) in the non-expanded state is formed by unfolding the free end 5 in the second direction _D2 with the fixed end 3 as the axis to form the cleaning sheet 1 (cleaning sheet 1) in the expanded state. The sheet part 17 (refer to Figures 1 to 4), the cleaning sheet 1 in the unfolded state is used for cleaning the surface to be cleaned. Furthermore, in the cleaning sheet 1 according to the first embodiment, the cleaning sheet portion 17 has a cleaning sheet portion angle of approximately 180° in the unfolded state. In other words, by folding the cleaning sheet 1 (cleaning sheet portion ₁₇ ) in the unfolded state in the second direction D2, the cleaning sheet 1 (laminated structure 9) in the non-expanded state can be formed.

In the laminated structure 9, the plurality of sheet parts are sequentially composed of the base sheet first part _13a , the first sheet part 21, the second sheet part 31, the third sheet part 51, and the fourth sheet part in one direction T 1 in the thickness direction. 61, and the second part 13b of the basic sheet. The base sheet first portion 13a includes a grip portion forming sheet first portion 11a for forming the grip portion 91, which is disposed on the opposite side to the first sheet portion 21. Furthermore, the base sheet second part 13b is provided with a grip part forming sheet second part 11b for forming the grip part 91, which is disposed on the opposite side to the fourth sheet part 61.

In addition, in each of the first sheet portion 21, the second sheet portion 31, the third sheet portion 51, and the fourth sheet portion 61, the freedom in the direction parallel to the fixed end connection portion 71 described later (the first direction D ₁ ) The extension length of the end portion 5 is longer than the length of the fixed end portion 3 in the direction parallel to the fixed end connecting portion 71 (first direction D ₁ ).

Each of the first sheet portion 11a, the first sheet portion 21, the second sheet portion 31, the third sheet portion 51, the fourth sheet portion 61, and the second sheet portion 11b for forming the grip portion are It is composed of water-needle nonwoven fabric containing heat-sealable fibers and water-retentive fibers, and contains chemical liquid. Furthermore, the base sheet first part 13a and the base sheet second part 13b are made of spun-bonded nonwoven fabric made of heat-fusible fibers.

As shown in FIG. 6 , the second sheet portion 31 _is alternately folded toward the first direction D ₁ by a plurality of folded portions (not labeled) extending toward the orthogonal direction D C, and has: one direction toward the thickness direction. A plurality of second sheet portion first tops 33 protruding in the direction T ₁ , each of which has a first top surface 33 a of the second sheet portion; and a plurality of second sheet portions protruding in the other direction T ₂ in the thickness direction. 2 tops 35, and each of them is provided with a second top surface 35a of the second sheet portion.

In other words, the second sheet portion 31 has a plurality of Ω ₁ structures protruding toward one thickness direction T ₁ , and a plurality of Ω ₂ structures protruding toward the other thickness direction T ₂ ; specifically, the second sheet portion 31 protrudes toward the first thickness direction T ₁ . The plurality of 2Ω ₁ structures 37, and the plurality of 2Ω ₂ structures 39 protruding toward the other direction T ₂ in the thickness direction; the plurality of 2Ω ₁ structures 37 are continuous toward the first direction _{D 1} , and the plurality of 2Ω ₂ structures 39 are toward the 1st direction D 1 1 direction D ₁ continuous. Furthermore, each of the plural 2-th Ω ₁ structures 37 and each of the plural 2-th Ω ₂ structures 39 have opposite directions but have the same shape (if the 2-th Ω _{1 structure 37 is used as a reference, then "2nd Ω 2 structure} 39 = 2nd Ω ₁ structure 37"), and are alternately arranged toward the first direction D ₁ . In addition, in the cleaning sheet 1 in the unfolded state, the plurality of second Ω ₁ structures 37 protruding in one thickness direction T ₁ and the plurality of second Ω ₂ structures ₃₉ protruding in the other thickness direction T 2 are respectively oriented in the second direction. One direction D ₂₁ and the second direction protrude in the other direction D ₂₂ .

Specifically, each of the plurality of 2Ω ₁ structures 37 is provided with: a pair of first wall portions 41 extending from both ends of the second sheet portion first top surface 33a and the second sheet portion first top surface 33a; and The pair of first bottom portions 43 extend from the end edges of the pair of first wall portions 41 . Furthermore, each of the plurality of _2Ω2 structures 39 is provided with: a pair of second wall portions 45 extending from both ends of the second sheet portion second top surface 35a and the second sheet portion second top surface 35a; and a pair of second wall portions 45 extending from both ends of the second sheet portion second top surface 35a. The second bottom portion 47 extends from the end edges of the pair of second wall portions 45 .

The pair of first bottoms 43 of each of the plurality of 2Ω ₁ structures 37 constitute the second sheet portion _2nd top surface 35 a of the 2Ω ₂ structure 39, and the pair of second bottoms 47 of each of the plurality of 2Ω 2 structures 39 , constitute the first top surface 33a of the second sheet portion of the second _Ω1 structure 37.

In each of the second Ω ₁ structures 37, the second sheet portion first top surface 33a, each of the pair of first wall portions 41, and each of the pair of first bottom portions 43 have a length ratio of 2:1:1. (length ratio toward the first direction D ₁ ). Therefore, in a plan view (a plan view from the second sheet portion first top surface 33 a side), the total area of the second sheet portion first top surface 33 a is approximately 100% of the area of the second sheet portion 31 .

Furthermore, in each of the _2Ω2 structures 39, the second top surface 35a of the second sheet portion, each of the pair of second wall portions 45, and each of the pair of second bottom portions 47 have a ratio of 2:1:1. Length ratio (length ratio toward the first direction D ₁ ). Therefore, in a plan view (a plan view from the second top surface 35a side of the second sheet portion), the total area of the second top surface 35a of the second sheet portion is approximately 100% of the area of the second sheet portion 31. Furthermore, the redundancy of the second sheet portion 31 is 3.0.

The second sheet portion 31 has the above-described plurality of folded portions (plural 2nd Ω ₁ structures 37 and plural 2th Ω ₂ structures 39), and has the above-described folded portions (plural 2nd Ω ₁ structures 37 and plural 2nd Ω ₂ structures 39). In the state, it is connected to the fixed end part 3 through the fixed end connecting part 71. Therefore, the second sheet portion 31 cannot open the folded portion (plural 2Ω ₁ structures 37 and plural 2Ω ₂ structures 39 ) at the fixed end 3 , but can open the folded portion (plural 2nd Ω ₁ structures 39 ) at the free end 5 37 and the complex 2Ω ₂ structure 39). Therefore, in the second sheet portion 31, the extension length of the free end portion 5 in the direction parallel to the fixed end connection portion 71 (the first direction D ₁ ) is longer than that in the direction parallel to the fixed end connection portion 71 (the first direction D 1 ). The length of the fixed end 3 in direction D ₁ ) is longer.

As shown in FIG. 8 , the third sheet portion 51 has a plurality of Ω ₁ structures protruding in one thickness direction _{T 1} and a plurality of Ω 2 structures protruding in the other thickness direction T ₂ . Specifically, the third sheet portion 51 has a plurality of Ω ₁ structures protruding in the thickness direction T 1 . The plural 3Ω ₁ structures 53 protruding in the direction T 1 and the plural 3 Ω _{2 structures 55 protruding toward the other direction T 2 in the thickness direction; the plural 3 Ω 1 structures 53 are} continuous toward the first direction D ₁ and the plural 3 Ω ₂ structures 55 is continuous in the first direction D ₁ . In addition, in the unfolded state of the cleaning sheet 1, the plurality of 3Ω ₁ structures 53 protruding in one thickness direction T ₁ and the plurality of 3 Ω ₂ structures ₅₅ protruding in the other thickness direction T 2 are respectively oriented in the second direction. One direction D ₂₁ and the second direction protrude in the other direction D ₂₂ .

Furthermore, each of the plurality of 3Ω ₁ structures 53 and each of the plurality of 3Ω ₂ structures 55 have the same structure as each of the plurality of 2nd Ω ₁ structures 37 and each of the plurality of 2nd Ω ₂ structures 39 in the second sheet portion 31 , respectively. shape (if the 2nd Ω ₁ structure 37 is used as the basis, "3rd Ω ₁ structure 53 = 3rd Ω ₂ structure 55 = 2nd Ω ₁ structure 37"), but each of the plural 3 Ω ₁ structures 53 is different from the plural 2 Ω ₂ structures. 39 are arranged in a consistent manner, especially in the thickness direction T. In the third sheet portion 51, for the same reason as the second sheet portion 31, the extension length of the free end portion 5 in the direction parallel to the fixed end connection portion 71 (the first direction D ₁ ) is longer than that connected to the fixed end. The length of the fixed end portion 3 in the direction parallel to the portion 71 (first direction D ₁ ) is longer.

As shown in FIG. 7 , the first sheet portion 21 has a plurality of Ω ₁ structures protruding in one thickness direction _{T 1} and a plurality of Ω 2 structures protruding in the other thickness direction T ₂ . Specifically, the first sheet portion 21 has a plurality of Ω ₁ structures protruding in the thickness direction T 1 . The plural 1Ω ₁ structures 23 protruding in the direction T 1 and the plural 1 Ω ₂ structures ₂₅ protruding toward the other direction T _{2 in the thickness direction; the plural 1 Ω 1 structures 23} are continuous toward the first direction D 1 and the plural 1 Ω ₂ structures 25 is continuous toward the first direction D ₁ . In addition, in the cleaning sheet 1 in the unfolded state, the plurality of first Ω ₁ structures 23 protruding in one thickness direction T ₁ and the plurality of first Ω ₂ structures ₂₅ protruding in the other thickness direction T 2 are respectively oriented in the second direction. One direction D ₂₁ and the second direction protrude in the other direction D ₂₂ .

Each of the plurality of first Ω ₁ structures 23 and each of the plurality of first Ω ₂ structures 25 have opposite directions but have the same shape, and are alternately arranged toward the first direction D ₁ . Furthermore, each of the plurality of 1st Ω ₁ structures 23 and each of the plurality of 1st Ω ₂ structures 25 are respectively larger than each of the plurality of 2nd Ω ₁ structures 37 and each of the plurality of 2nd Ω ₂ structures 39 in the second sheet portion 31 . And have similar shapes (if the 2nd Ω ₁ structure 37 is used as the basis, "1st Ω ₁ structure 23 = 1st Ω ₁ structure 25 > 2nd Ω ₁ structure 37 "). In the first sheet portion 21, for the same reason as the second sheet portion 31, the extension length of the free end portion 5 in the direction parallel to the fixed end connection portion 71 (the first direction D ₁ ) is longer than that connected to the fixed end. The length of the fixed end portion 3 in the direction parallel to the portion 71 (first direction D ₁ ) is longer.

As shown in FIG. 8 , the fourth sheet portion 61 has a plurality of Ω ₁ structures protruding in one thickness direction _{T 1} and a plurality of Ω 2 structures protruding in the other thickness direction T ₂ . Specifically, the fourth sheet portion 61 has a plurality of Ω ₁ structures protruding in the thickness direction T 1 . The plural 4Ω ₁ structures 63 protruding in the direction T 1 and the plural 4 Ω ₂ structures 65 protruding toward the other direction T ₂ in the thickness direction; the plural 4 Ω ₁ structures 63 are continuous toward the first direction D 1 and the plural 4 Ω ₂ structures 65 protrude in the other direction T ₂ of the thickness direction _. 65 is continuous in the first direction D ₁ . In addition, in the unfolded state of the cleaning sheet 1, the plurality of 4Ω ₁ structures 63 protruding in one thickness direction T ₁ and the plurality of 4 Ω ₂ structures ₆₅ protruding in the other thickness direction T 2 are respectively oriented in the second direction. One direction D ₂₁ and the second direction protrude in the other direction D ₂₂ .

Each of the plurality of 4th Ω ₁ structures 63 and each of the plurality of 4th Ω ₂ structures 65 have the same shape as each of the plurality of 1st Ω ₁ structures 23 and each of the plurality of 1st Ω ₂ structures 25 in the first sheet portion 21 . (If the 2nd Ω ₁ structure 37 is used as a reference, "4th Ω ₁ structure 63 = 4th Ω ₂ structure 65 > 2nd Ω ₁ structure 37 "), but each of the plural 4 Ω ₁ structures 63 is compared with the plural 1 Ω ₂ structures 25 are arranged in such a way that each of them faces each other, especially in a consistent manner in the thickness direction T. In the fourth sheet portion 61, for the same reason as the second sheet portion 31, the extension length of the free end portion 5 in the direction parallel to the fixed end connection portion 71 (the first direction D ₁ ) is longer than that connected to the fixed end. The length of the fixed end portion 3 in the direction parallel to the portion 71 (first direction D ₁ ) is longer.

The laminated structure 9 is provided with a fixed end connecting portion 71 at the fixed end portion 3. The fixed end connecting portion 71 is composed of a plurality of sheet portions including the base sheet first portion 13a and the base sheet second portion 13b (formed from the holding portion). The first portion 11a of the sheet to the second portion 11b) of the sheet for forming the holding portion are composed of a welded portion formed by welding. The fixed end connecting portion 71 extends in the first direction _D1 and connects the first portion 11a of the gripping portion forming sheet to the second portion 11b of the gripping portion forming sheet.

The laminated structure 9 is connected to the free end portion 5 by a free end connecting portion 73 made of an adhesive. The free end connection part 73 includes: a first free end connection part 75 that connects the first sheet part 21 and the second sheet part 31 , a second free end connection part 77 that connects the second sheet part 31 and the third sheet part 51 , and The third free end connecting portion 79 of the third sheet portion 51 and the fourth sheet portion 61, the fourth free end connecting portion 81 connecting the fourth sheet portion 61 and the second base sheet portion 13b, and the first base sheet portion 13a. and the fifth free end connecting portion 83 of the first sheet portion 21.

The first free end connection part 75 that connects the first sheet part 21 and the second sheet part 31 has six first free end connection parts 75a, and the six first free end connection parts 75a are arranged on the second sheet part 31 The center of the first top surface 33a of each second sheet portion of the plurality of second Ω ₁ structures 37 (the center of the first direction D ₁ ). In addition, the six first free end connecting portions 75a also include two first free end connecting portions 75a arranged at both ends of the first sheet portion 21 in the first direction _D1 .

The second free end connection portion 77 that connects the second sheet portion 31 and the third sheet portion 51 is provided with five second free end connection portions 77a, and the five second free end connection portions 77a are arranged on the second sheet portion 31. The center of the second top surface 35a of the second sheet portion of each of the plurality of _2Ω2 structures 39 (the center of the first direction _D1 ). Since each of the plurality of 2nd Ω ₂ structures 39 and each of the plurality of 3rd Ω ₁ structures 53 are arranged to coincide with each other in the thickness direction T, it can also be said that the second free end connecting portion 77 a is arranged in the plurality of 3rd Ω ₁ structures 53 The center of the first top surface 57a of each third sheet portion (the center of the first direction _D1 ).

The six first free end connection portions 75a and the five second free end connection portions 77a are spaced apart from each other in the first direction _D1 so as not to overlap in the thickness direction T. The six first free end connection parts 75a and the five second free end connection parts 77a are separated in the first direction D1 by only the length of the first direction _{D 1 of} the 2 Ω ₁ structure 37 (= the length of the 2 Ω ₂ structure 39 half the length of the first direction D ₁ ).

The third free end connection portion 79 that connects the third sheet portion 51 and the fourth sheet portion 61 has six third free end connection portions 79a, and the six third free end connection portions 79a are arranged on the third sheet portion 51. The center of the second top surface (not attached) of the third sheet portion of each of the plurality of 3Ω ₂ structures 55 (the center of the first direction D ₁ ). In addition, the six third free end connecting portions 79a include two third free end connecting portions 79a arranged at both ends of the third sheet portion 51 in the first direction _D1 . The six third free end connection portions 79a of the third free end connection portion 79 and the six first free end connection portions 75a of the first free end connection portion 75 are arranged to overlap in the thickness direction T.

Therefore, the six third free end connecting portions 79a of the third free end connecting portion 79 and the five second free end connecting portions 77a of the second free end connecting portion 77 are separated by only _3Ω1 in the first direction _D1. The length of the structure 53 in the first direction D ₁ (= the length of the third Ω ₂ structure 55 in the first direction D ₁ ) is half of the length. The six third free end connecting portions 79a of the third free end connecting portion 79 and the five second free end connecting portions 77a of the second free end connecting portion 77 are arranged so as not to overlap in the thickness direction T.

The fourth free end connection part 81 that connects the fourth sheet part 61 and the base sheet second part 13b has five fourth free end connection parts 81a, and the five fourth free end connection parts 81a are arranged in the fourth sheet part 61 The center of the second top surface 67a of the fourth sheet portion of each of the plurality of _4Ω2 structures 65 (the center of the first direction _D1 ). In addition, the five fourth free end connecting portions 81a include two fourth free end connecting portions 81a arranged at both ends of the fourth sheet portion 61 in the first direction _D1 . In addition to the two fourth free end connecting portions 81a disposed at both ends of the fourth sheet portion 61 in the first direction _D1 , the five fourth free end connecting portions 81a of the fourth free end connecting portion 81 are connected to the third free end connecting portion 81a. The six third free end connecting portions 79a of the end connecting portion 79 are arranged so as not to overlap in the thickness direction T.

The fifth free end connection part 83 that connects the base sheet first part 13a and the first sheet part 21 has five fifth free end connection parts 83a, and the five fifth free end connection parts 83a are arranged in the first sheet part 21 The center of the first top surface 27a of the first sheet portion of each of the plurality of first Ω ₁ structures 23 (the center of the first direction D ₁ ). In addition, the five fifth free end connecting portions 83a include two fifth free end connecting portions 83a arranged at both ends of the first sheet portion 21 in the first direction _D1 . The five fourth free end connecting portions 81a of the fourth free end connecting portion 81 and the five fifth free end connecting portions 83a of the fifth free end connecting portion 83 are arranged to overlap in the thickness direction T. In addition to the two fifth free end connecting portions 83a arranged at both ends of the first sheet portion 21 in the first direction _D1 , the five fifth free end connecting portions 83a of the fifth free end connecting portion 83 are in contact with the first free end connecting portion 83a. The six first free end connecting portions 75a of the end connecting portion 75 are arranged so as not to overlap in the thickness direction T.

In addition, the base sheet first part 13 a and the grip part forming sheet part 1 11 a, and the base sheet second part 13 b and the grip part forming sheet second part 11 b are formed to form the grip part 91 The welded portion 15 for the grip portion is used for gripping the cleaning sheet mounting portion 253 a and the cleaning sheet mounting portion 253 b of the hand-held cleaning tool 251 . The welding part 15 for the grip part is a well-known part and the description is omitted.

As shown in FIG. 5 , the cleaning sheet 1 in the non-expanded state is provided with a pair of unfolding grips 85 . The pair of unfolding grips 85 are formed by making the base sheet first part 13 a and the base sheet second part 13 b The plurality of sheet portions (that is, the first sheet portion 21, the second sheet portion 31, the third sheet portion 51, and the fourth sheet portion 61) are formed on the other side of the first direction _D12 (the gripping portion 91 side) Formed to be longer. The pair of unfolding grips 85 (the base sheet first part 13a and the base sheet second part 13b) are separated by a predetermined distance d in the thickness direction T to form a pair of unfolding grips 85. Therefore, the user holds one The unfolding grip 85 makes it easy to unfold the cleaning sheet 1 .

When the pair of unfolding grips 85 of the cleaning sheet 1 (laminated structure 9 ) in the non-expanded state is held, the first base sheet portion 13 a is moved away from the second base sheet portion 13 b in the second direction D ₂ , specifically, when unfolded in the second direction D ₂₁ , the first sheet portion 21, the second sheet portion 31, the third sheet portion 51, and the fourth sheet portion 61 are connected to the base sheet first portion 13a. , and the second part 13b of the base sheet are sequentially unfolded in the second direction _D2 .

Next, in the unfolded state of the cleaning sheet 1 (cleaning sheet portion 17), along with the above-mentioned unfolding, the first sheet portion 21 has a complex Ω structure, and at the first free end connecting portion 75a, the first sheet portion 21 It will be stretched in one direction D ₂₁ of the second direction or in the other direction D ₂₂ of the second direction. Therefore, in the first direction D ₁₁ (the other first direction D ₁₂ ), the free end 5 of the first sheet portion 21 has a direction toward the second direction D ₂₁ and the other second direction D ₂₂ The first reciprocating structure 93 alternately reciprocates.

Similarly, in the cleaning sheet 1 (cleaning sheet portion 17) in the unfolded state, the second sheet portion 31, the third sheet portion 51, and the fourth sheet portion 61 are respectively in the first direction D ₁₁ (or the first direction In the other direction D ₁₂ ), the free end 5 having the second sheet portion 31 , the third sheet portion 51 and the fourth sheet portion 61 alternately reciprocates toward the first direction D ₂₁ of the second direction and the other direction D ₂₂ of the second direction. The second reciprocating structure 95, the third reciprocating structure 97 and the fourth reciprocating structure 99.

Since the Ω structure of the second sheet part 31 and the third sheet part 51 is smaller than the Ω structure of the first sheet part 21 and the fourth sheet part 61, the second reciprocating structure 95 of the second sheet part 31 and the Each of the third reciprocating structure 97 included in the 3 sheet portion 51 has a smaller wave height than each of the first reciprocating structure 93 included in the first sheet portion 21 and the fourth reciprocating structure 99 included in the fourth sheet portion 61. tendency.

Therefore, the second reciprocating structure 95 and the third reciprocating structure 97 having a relatively small wave height are flexibly changing their shapes while entering the details of the object to be cleaned having a complex shape, so that the second reciprocating structure 95 and the third reciprocating structure 97 are formed. The wall surface of the third reciprocating structure 97 cleans the detailed cleaning surface of the object to be cleaned, collects fine garbage attached to the object to be cleaned, and can easily return to its original shape even if it is deformed due to contact with the object to be cleaned. . Furthermore, the wall surfaces constituting the first reciprocating structure 93 and the fourth reciprocating structure 99 having relatively large wave heights can clean the large cleaning surface of the object to be cleaned while softly changing their shapes, and can be collected. Remaining garbage in the second reciprocating structure 95 and the third reciprocating structure 97 .

The cleaning sheet 1 according to the first embodiment can be manufactured in the following manner, for example. The first nonwoven fabric 201, the second nonwoven fabric 203, the base sheet 205, and the grip portion forming sheet 207 are sequentially laminated to form the laminated sheet 209. An exploded perspective view of the laminated sheet 209 is shown in FIG. 9 . In addition, the gripping portion forming sheet 207 is welded to the base sheet 205, and the gripping portion 91 is formed between them.

Next, the laminated sheet 209 is welded along the first direction center line CL ₁ extending in the first direction D ₁ through the center of the orthogonal direction D _C to form a welded portion 211 . Next, the laminated sheet 209 is folded at the welding portion 211, and the first free end connecting portion 75 to the fifth free end connecting portion 83 are formed on the folded laminated sheet 209 using an adhesive, thereby forming the cleaning sheet 1 .

In addition, the welded portion 211 constitutes the fixed end connecting portion 71 . Furthermore, the first nonwoven fabric 201 constitutes the second sheet portion 31 and the third sheet portion 51 via the welded portion 211 (fixed end connecting portion 71). The second nonwoven fabric 203 constitutes the first sheet portion 21 and the fourth sheet portion 61 with the welded portion 211 (fixed end connecting portion 71) interposed therebetween. The base sheet 205 constitutes the base sheet first part 13a and the base sheet second part 13b with the welding part 211 (fixed end connection part 71) interposed therebetween. The grip forming sheet 207 constitutes the grip forming sheet first part 11 a and the grip forming sheet second part 11 b with the welding part 211 (fixed end connection part 71 ) interposed therebetween.

＜＜Second Embodiment＞＞ 10 to 12 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as the "second embodiment"). Specifically, FIG. 10 is a perspective view of the front, planar and left side of the cleaning sheet 1 in the unfolded state. FIG. 11 is a left side view of the cleaning sheet 1 in an unexpanded state, which corresponds to the left side view of the cleaning sheet 1 in an unexpanded state according to the first embodiment. FIG. 12 is a perspective view of the front, planar and left side of the cleaning sheet 1 in a non-deployed state.

The cleaning sheet 1 according to the second embodiment is a cleaning sheet that is attached to a handheld cleaning tool 251 and used. Furthermore, the cleaning sheet 1 according to the second embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 can be formed into an unexpanded state and an unfolded state. Specifically, it can be formed into a single cleaning sheet portion 17 in an unfolded state and a single laminated structure 9 in an unexpanded state. Furthermore, in the cleaning sheet 1 according to the second embodiment, the cleaning sheet portion 17 has a cleaning sheet portion angle of approximately 180° in the unfolded state.

The cleaning sheet 1 in the unfolded state (cleaning sheet portion 17) and the cleaning sheet 1 in the non-expanded state (laminated structure 9) have a first direction D ₁ , an orthogonal direction D _C and a thickness direction T that are orthogonal to each other, and a third direction. 2 direction D ₂ . In the unfolded state of the cleaning sheet 1 (cleaning sheet portion 17) and the non-expanded state of the cleaning sheet 1 (laminated structure 9), the first direction D ₁ , the orthogonal direction D _C and the thickness direction T, and the second direction D ₂ This is the same as the first embodiment.

The cleaning sheet 1 according to the second embodiment has a laminated structure 9 in a non-expanded state. The laminated structure 9 is a laminated base sheet 1st part 13a, the 1st sheet part 101 to the 18th sheet part 135, and the base sheet. Part 2 13b has a total of 20 lamella parts. In addition, in FIG. 10 , the angle relationship between the second sheet portion and the fourth sheet portion is not shown. In addition, in FIG. 11 , the first sheet portion 101 , the second sheet portion 103 , and the third sheet portion 105 , as well as the 16th sheet portion 131 , the 17th sheet portion 133 , and the 18th sheet portion 135 are shown, but are omitted. The 4th sheet part to the 15th sheet part 129. The first sheet part 101 to the eighteenth sheet part 135 are not folded in the first direction _D1 .

As shown in FIG. 12 , each of the first sheet portion 101 to the eighteenth sheet portion 135 has an extension length L of the free end portion 5 in the direction parallel to the fixed end connecting portion 71 (the first direction D ₁ ). ₁ , and the length L ₂ of the fixed end 3 in the direction parallel to the fixed end connecting part 71 (first direction D ₁ ); and the extension length L ₁ of the free end 5 is configured to be longer than the length of the fixed end 3 L ₂ is longer. Furthermore, each of the base sheet first part 13a and the base sheet second part 13b is also configured to have an extension length (not shown) of the free end part 5 in the direction parallel to the fixed end connecting part 71 (the first direction D ₁ ). ) is longer than the length of the fixed end portion 3 in the direction parallel to the fixed end connecting portion 71 (first direction D ₁ ) (not shown).

The base sheet first portion 13a includes a grip portion forming sheet first portion 11a for forming the grip portion 91, which is disposed on the surface opposite to the first sheet portion 101. Furthermore, the base sheet second portion 13b includes a grip portion forming sheet second portion 11b for forming the grip portion 91, which is disposed on the surface opposite to the eighteenth sheet portion 135.

Furthermore, the cleaning sheet 1 in the non-expanded state is provided with a pair of unfolding grips 85. The pair of unfolding grips 85 are formed by making the base sheet first part 13a and the base sheet second part 13b smaller than the plurality of sheet parts ( That is, the first sheet portion 101 to the fourth sheet portion 107) are formed to be longer toward the other direction _D12 side of the first direction. Since the pair of unfolding grips 85 are separated by a predetermined distance d in the thickness direction T, it is easy for the user to hold the pair of unfolding grips 85 and unfold the cleaning sheet 1 .

The laminated structure 9 is connected at the free end portion 5 by a free end connecting portion 73 composed of an adhesive. In the cleaning sheet 1 according to the second embodiment, since the number of plural sheet portions forming the laminated structure 9 is large, if a literal formula is used, the cleaning sheet 1 includes n sheet portions including the n-th sheet portion (n=1~ 18), the first part of the basic sheet 13a, and the second part of the basic sheet 13b.

The free end connecting portion 73 includes an n-th free end connecting portion (n=1~17) that connects the n-th sheet portion and the (n+1)-th sheet portion. In addition, in FIG. 11 , in order to simplify the explanation, the first free end connection part 141 connecting the first sheet part 101 and the second sheet part 103 and the second free end connection connecting the second sheet part 103 and the third sheet part 105 are shown. part 143, the third free end connection part 145 that connects the third sheet part 105 and the fourth sheet part (not shown), the 15th free end connection part that connects the 15th sheet part (not shown) and the 16th sheet part 131 part 147, the 16th free end connecting part 149 connecting the 16th sheet part 131 and the 17th sheet part 133, and the 17th free end connecting part 151 of the 17th sheet part 133 and the 18th sheet part 135.

Moreover, the free end connection part 73 has an 18th free end connection part 153 which connects the 18th sheet part 135 and the base sheet 2nd part 13b, and the 19th free end connection part which connects the 1st base sheet part 13a and the 1st sheet part 101 Department 155.

The n-th free end connection portion (n=1~19) is provided with a plurality of n-th free end connection portions (n=1~19) that are intermittently arranged in the first direction _D1 , specifically, are separated by a predetermined distance L and are repeatedly arranged. ). In addition, in FIG. 11 , in order to simplify the description, only the first to third free end connecting portions 141a to 145a and the 15th to 19th free end connecting portions 147a to 155a are shown.

Those nth free end connecting parts (n=1~18) that satisfy the requirements of n=2k-1 (k=1~9) are arranged in such a manner that the plural nth free end connecting parts are aligned in the thickness direction T. Furthermore, the nth free end connecting portion (n=1~18) that satisfies the requirements of n=2k (k=1~9) and the 19th free end connecting portion 155 are represented by the plural nth free end connecting portion (n =1~19) are arranged so that T is consistent in the thickness direction. Furthermore, if the nth free end connection part (n=1~18) satisfies the requirements of n=2k-1 (k=1~9), the nth free end connection part (n=1~18) satisfies n= The requirements of 2k (k=1~9) and the 19th free end connecting portion 155 are arranged so as not to overlap in the thickness direction T, specifically, they are separated by only 0.5L in the first direction _D1 .

Furthermore, the cleaning sheet 1 is provided with an n-th auxiliary connecting portion (n=1~19). The n-th auxiliary connecting portion (n=1~19) is a plurality of n-th free end connecting portions (n=1~19). Each of the n free end connecting parts (n=1 to 19) serves as the starting point, and the free end 5 passes through the central portion 7 to the fixed end 3 as the end point. In addition, in FIG. 10 , the 16th auxiliary connection part 149b and the 18th auxiliary connection part 153b among the n-th auxiliary connection parts are shown.

As shown in FIG. 10 , in the unfolded cleaning sheet 1 (cleaning sheet portion 17 ), the n-th sheet portion (n=1 to 18) has a second second direction D ₂₁ and a second second direction D _{22 .} The nth reciprocating structure (n=1~18) that reciprocates alternately. In addition, in FIG. 10 , the angular relationship between the second reciprocating structure composed of the second sheet portion and the fourth reciprocating structure composed of the fourth sheet portion in the n-th reciprocating structure (n=1~18) is not shown. .

In the unfolded cleaning sheet 1 (cleaning sheet portion 17), each of the n-th sheet portions (n=1~18) can form an n-th reciprocating structure (n=1~18), and the n-th reciprocating structure (n= 1~18) alternately reciprocates toward the second direction D ₂₁ and the other second direction D ₂₂ . In addition, each of the first sheet portion 101 to the eighteenth sheet portion 135 is configured such that the extension length L ₁ of the free end 5 is longer than the length L ₂ of the fixed end 3 . Therefore, when the cleaning sheet 1 is transformed from the non-expanded state to the expanded state, the free end portions 5 of each of the first sheet portion 101 to the eighteenth sheet portion 135 are oriented in a direction parallel to the fixed end connecting portion 71 (the first direction D ₁ ) Amplitude reduction can increase the amplitude of the n-th reciprocating structure (n=1~18), and the wall surface that constitutes the n-th reciprocating structure (n=1~18) can be cleaned while changing its shape softly. noodle.

Moreover, since the cleaning sheet 1 according to the second embodiment is provided with the n-th auxiliary connecting portion (n=1~19), even if the surface to be cleaned is cleaned, the plurality of n-th free end connecting portions (n=1~19) When the nth free end connecting part (n=1~19) is detached, the nth auxiliary connecting part (n=1~19) can still function to maintain the shape of the nth reciprocating structure (n=1~18), so that The cleaning sheet 1 has excellent cleaning performance.

The cleaning sheet 1 according to the second embodiment is the same as the cleaning sheet 1 according to the first embodiment except for the other parts, so the description is omitted.

＜＜Third Embodiment＞＞ 13 to 15 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "the third embodiment"). Specifically, FIG. 13 is a perspective view of the front, planar and left side of the cleaning sheet 1 in the unfolded state. FIG. 14 is a perspective view of the front, planar and left side of the cleaning sheet 1 in a non-deployed state. FIG. 15 is a schematic diagram showing a state in which the cleaning sheet 1 is attached to a single-sided cleaning type floor cleaning tool 351 .

The cleaning sheet 1 according to the third embodiment is a cleaning sheet that is attached to a floor cleaning tool 351 and used. Furthermore, the cleaning sheet 1 according to the third embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 can be formed into an unexpanded state and an unfolded state. Specifically, it can be formed into a single cleaning sheet portion 17 in an unfolded state and a single laminated structure 9 in an unexpanded state. Furthermore, in the cleaning sheet 1 according to the third embodiment, the cleaning sheet portion 17 has a cleaning sheet portion angle of approximately 180° in the unfolded state.

The cleaning sheet 1 (cleaning sheet portion 17) in the unfolded state includes a first direction D ₁ , an orthogonal direction D _C and a thickness direction T that are orthogonal to each other, and a second direction D ₂ . The first direction D ₁ , the orthogonal direction _DC , the thickness direction T, and the second direction D ₂ of the cleaning sheet 1 (cleaning sheet portion 17 ) in the unfolded state are the same as those in the first embodiment. The cleaning sheet 1 in the non-expanded state (laminated structure 9) has the first direction D 1 so that the cleaning sheet 1 in the expanded state (cleaning sheet portion 17) and the base sheet second portion 301b described below have the same direction _. , the orthogonal direction D _C and the thickness direction T, and the second direction D ₂ .

The laminated structure 9 has a fixed end 3 and a free end 5. Each of the fixed end 3 and the free end 5 extends in a direction parallel to the first direction _D1 . The fixed end 3 and the free end 5 are spaced apart. The central portion 7 is arranged separately in the second direction _D2 .

In the laminated structure 9, a plurality of sheet parts are arranged in one direction T ₁ in the thickness direction, in order from the base sheet first part 301a, the first sheet part 303, the second sheet part 305, the third sheet part 307, the fourth sheet part 309, and the base sheet second part 301b. The base sheet first part 301a and the base sheet second part 301b are connected to the holding sheet 311 for holding the floor cleaning tool 351.

Each of the first sheet part 303, the second sheet part 305, the third sheet part 307, and the fourth sheet part 309 is made of water-needle nonwoven fabric containing heat-fusible fibers and water-retentive fibers, and contains a chemical solution. Furthermore, the base sheet first part 301a, the base sheet second part 301b, and the holding sheet 311 are made of spunbond nonwoven fabric made of heat-fusible fibers.

The holding sheet 311 is configured to be longer than the first sheet portion 303 to the fourth sheet portion 309 in the orthogonal direction _DC , specifically in the other orthogonal direction _DC2 , and longer than the first sheet portion 303. The portion of the fourth sheet portion 309 extending toward the other orthogonal direction D _C2 constitutes the holding portion 313 held by the floor cleaning tool 351 .

The first sheet portion 303 of the cleaning sheet 1 according to the third embodiment has a plurality of Ω structures having the same shape as the first sheet portion 21 of the cleaning sheet 1 according to the first embodiment, and the number of Ω structures is larger than that of the first sheet portion 303 of the cleaning sheet 1 according to the first embodiment. The cleaning sheet 1 of the embodiment has more first sheet portions 21 . Similarly, the second sheet portion 305, the third sheet portion 307, and the fourth sheet portion 309 of the cleaning sheet 1 according to the third embodiment have the same properties as the second sheet portion 31 of the cleaning sheet 1 according to the first embodiment. , the third sheet portion 51 and the fourth sheet portion 61 have a plurality of Ω structures of the same shape, and the number of Ω structures is larger than that of the second sheet portion 31 , the third sheet portion 51 and the fourth sheet portion 5 of the cleaning sheet 1 according to the first embodiment. The lamella section 61 is more. Furthermore, in the first sheet portion 303, the extension length of the free end portion 5 in the direction parallel to the fixed end connection portion 71 (the first direction D ₁ ) is longer than that in the direction parallel to the fixed end connection portion 71 (the first direction D 1 ). The length of the fixed end 3 in D ₁ ) is longer.

The laminated structure 9 includes a fixed end connection portion 71 , which is a welded portion formed by welding the first base sheet portion 301 a to the second base sheet portion 301 b to the fixed end portion 3 . The fixed end connecting portion 71 extends in the first direction _D1 and connects the first base sheet portion 301a to the second base sheet portion 301b.

The laminated structure 9 is connected by a free end connecting portion (not shown) formed of an adhesive at the free end portion 5 . The free end connecting portion (not shown) of the cleaning sheet 1 according to the third embodiment is the same as the free end connecting portion 73 of the cleaning sheet 1 according to the first embodiment, so the description is omitted.

When the gripping portion 313 of the cleaning sheet 1 in the unexpanded state is held, the first base sheet portion 301a is directed away from the second base sheet portion 301b in the second direction D ₂ , specifically in the second direction. When unfolded in the direction D ₂₁ , the first sheet part 303, the second sheet part 305, the third sheet part 307, the fourth sheet part 309, and the second base sheet part 301b are connected in sequence. It expands toward the second direction D ₂ , specifically toward the second direction D ₂₁ .

Next, in the cleaning sheet 1 in the unfolded state, along with the above-mentioned unfolding, the first sheet portion 303 has a free end portion of the first sheet portion 303 in the first direction D ₁₁ (the other first direction D ₁₂ ). 5 The first reciprocating structure 315 alternately reciprocates toward the first second direction D ₂₁ and the other second direction D ₂₂ .

Similarly, in the unfolded cleaning sheet 1, the second sheet portion 305, the third sheet portion 307 and the fourth sheet portion 309 are respectively in the first direction D ₁₁ (the other first direction D ₁₂ ), A second reciprocating structure 317 having the free end portion 5 of the second sheet portion 305, the third sheet portion 307, and the fourth sheet portion 309 alternately reciprocating toward the first second direction D ₂₁ and the other second direction D ₂₂ , The third reciprocating structure 319 and the fourth reciprocating structure 321. Furthermore, in each of the second sheet portion 305, the third sheet portion 307, and the fourth sheet portion 309, the extension length of the free end portion 5 in the direction parallel to the fixed end connecting portion 71 (the first direction D ₁ ) is It is longer than the length of the fixed end portion 3 in the direction parallel to the fixed end connecting portion 71 (first direction D ₁ ).

The cleaning sheet 1 is used by fixing the grip part 313 to the slit part 353 of the floor cleaning tool 351, for example. If the floor cleaning tool 351 equipped with the cleaning sheet 1 is arranged on the surface to be cleaned (for example, the floor, etc.) in such a manner that the cleaning sheet 1 faces the surface to be cleaned, the cleaning sheet 1 is moved by the floor cleaning tool 351 itself. The weight of the weight, etc. is piled on the surface to be cleaned, and the first reciprocating structure 315 to the fourth reciprocating structure 321 are irregularly deformed, exposing the first area of the first sheet portion 303 to the fourth sheet portion 309. This first area It is in contact with the surface to be cleaned and the first area can clean the surface to be cleaned. In addition, the first reciprocating structure 315 to the fourth reciprocating structure 321 deform irregularly to form irregular steps in the cleaning sheet 1, and the irregular steps provide excellent cleaning performance on the surface to be cleaned.

When the floor cleaning tool 351 is lifted up and the cleaning sheet 1 is separated from the surface to be cleaned, the first reciprocating structure 315 to the fourth reciprocating structure 321 return to the original shape due to the shape recovery properties, and then the cleaning sheet 1 is removed. 1 is stacked on the surface to be cleaned again, and the first reciprocating structure 315 to the fourth reciprocating structure 321 change irregularly, exposing a second area that is different from the first area. This second area is in contact with the surface to be cleaned and the second area is exposed. The area can be cleaned. The cleaning sheet 1 according to the third embodiment is the same as the cleaning sheet 1 according to the first embodiment except for the other parts, so the description is omitted.

＜＜Fourth Embodiment＞＞ 16 to 19 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "the fourth embodiment"). Specifically, FIG. 16 is a perspective view of the front, planar and left side of the cleaning sheet 1 in the unfolded state. FIG. 17 is a perspective view of the front, planar and left side of the cleaning sheet 1 in a non-deployed state. FIG. 18 is a left side view of the first laminated structure 401. FIG. 19 is a schematic diagram showing a state in which the cleaning sheet 1 is attached to a double-sided cleaning type floor cleaning tool 481 .

The cleaning sheet 1 according to the fourth embodiment is a cleaning sheet that is attached to a floor cleaning tool 351 and used. Furthermore, the cleaning sheet 1 according to the fourth embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 can be formed into an unfolded state and an unfolded state, specifically, it can be formed into two cleaning sheet parts (the first cleaning sheet part 415 and the second cleaning sheet part 417) in the unfolded state, and two layers in the unexpanded state. stacked structure (the first stacked structure 401 and the second stacked structure 403). Furthermore, in the unfolded state of the cleaning sheet 1 according to the fourth embodiment, each of the first cleaning sheet portion 415 (first laminated structure 401) and the second cleaning sheet portion 417 (second laminated structure 403) has an approximate thickness of 180° cleaning wafer angle.

The cleaning sheet 1 (the first cleaning sheet part 415 and the second cleaning sheet part 417) in the unfolded state has in common a first direction D ₁ , an orthogonal direction D _C and a thickness direction T that are orthogonal to each other, and a second direction D ₂ . The first direction D ₁ , the orthogonal direction _DC , the thickness direction T, and the second direction D ₂ of the cleaning sheet 1 in the unfolded state are the same as those in the first embodiment.

The cleaning sheet 1 in the non-expanded state (the first laminated structure 401 and the second laminated structure 403) is composed of the cleaning sheet 1 in the expanded state (the first cleaning sheet part 415 and the second cleaning sheet part 417) and a base sheet described below. The second part 405b and the fourth base sheet part 421b have the same direction, and have a first direction D ₁ , an orthogonal direction D _C , a thickness direction T, and a second direction D ₂ .

The cleaning sheet 1 in the unexpanded state has two laminated structures (ie, the first laminated structure 401 and the second laminated structure 403) in which a plurality of sheet portions are laminated in the thickness direction T. The first laminated structure 401 and the second laminated structure 403 are laminated in the thickness direction T. In addition, the first laminated structure 401 and the second laminated structure 403 are the cleaning sheets 1 in the unfolded state, and constitute the first cleaning sheet part 415 and the second cleaning sheet part 417 respectively.

In the first laminated structure 401, the plurality of sheet parts are sequentially composed of a base sheet first part 405a, a first sheet part 407, a second sheet part 409, and a base sheet second part 405b in one thickness direction _T1 . The base sheet first part 405a and the base sheet second part 405b are connected to the holding sheet 411 for holding the floor cleaning tool 481.

In the second laminated structure 403, the plurality of sheet portions are composed of a third base sheet portion 421a, a third sheet portion 423, a fourth sheet portion 425, and a fourth base sheet portion 421b in order in the thickness direction _T1. . The third base sheet part 421a and the fourth base sheet part 421b are connected to the holding sheet 411 for holding the floor cleaning tool 481.

In the non-deployed state, the first laminated structure 401 has a first fixed end 427 and a first free end 429, and each of the first fixed end 427 and the first free end 429 is oriented in the first direction D ₁ Extending in parallel directions, the first fixed end portion 427 and the first free end portion 429 are spaced apart from each other in the second direction _D2 across the first central portion 431 .

Moreover, in the non-deployed state, the second laminated structure 403 has a second fixed end 435 and a second free end 437, and each of the second fixed end 435 and the second free end 437 faces the first direction. The second fixed end portion 435 and the second free end portion 437 extend in a direction parallel to D ₁ and are spaced apart from each other in the second direction D ₂ across the second central portion 439 .

In the first laminated structure 401, each of the first sheet portion 407 and the second sheet portion 409 is composed of a water-needle nonwoven fabric containing heat-fusible fibers and water-retentive fibers, and contains a chemical solution. Furthermore, the base sheet first part 405a, the base sheet second part 405b, and the holding sheet 411 are made of spunbond nonwoven fabric made of heat-fusible fibers.

In the second laminated structure 403, each of the third sheet portion 423 and the fourth sheet portion 425 is composed of a water-needle nonwoven fabric containing heat-fusible fibers and water-retentive fibers, and contains a chemical solution. Furthermore, the third base sheet portion 421a and the fourth base sheet portion 421b are made of spunbond nonwoven fabric made of heat-fusible fibers.

In the first laminated structure 401, the first sheet portion 407 has the same shape as the first sheet portion 21 of the cleaning sheet 1 according to the first embodiment, but has a different number of complex Ω protruding toward one thickness direction _{T1. 1} structure and a complex Ω ₂ structure protruding toward the other direction T ₂ in the thickness direction. Specifically, the first sheet portion 407 has seven 1-th Ω 1 structures 445 protruding in one thickness direction T ₁ and eight 1-th Ω ₂ structures 447 protruding in the other thickness direction T ₂ , and 7 1-th Ω ₂ structures 447 protruding in the other thickness direction T 2 . ₁ structure 445 is continuous in the first direction D ₁ , and 8 1st Ω ₂ structures 447 are continuous in the first direction D ₁ . In addition, in the first sheet portion 407, the extension length of the free end portion (not shown) in the direction parallel to the first fixed end connecting portion 441 described later (the first direction D ₁ ) is longer than that connected to the first fixed end. The length of the fixed end portion (not shown) in the direction parallel to the portion 441 (first direction D ₁ ) is longer.

Similarly, in the first laminated structure 401, the second sheet portion 409 has the same shape as the fourth sheet portion 61 in the cleaning sheet 1 according to the first embodiment, but has a different number of thickness direction T ₁ A complex Ω ₁ structure protruding and a complex Ω ₂ structure protruding toward the other direction T ₂ in the thickness direction. Specifically, the second sheet portion 409 has eight 2nd Ω ₁ structures 449 protruding in one thickness direction T 1 and seven 2 Ω ₂ structures 451 protruding in the other thickness direction T 2 , and eight 2 _{Ω 2 structures} 451 protruding in the other thickness direction T 2 . _{The 1} structure 449 is continuous in the first direction D ₁ , and the 7 2 Ω ₂ structures 451 are continuous in the first direction D ₁ . Furthermore, in the second sheet portion 409, the extension length of the free end portion (not shown) in the direction parallel to the first fixed end connecting portion 441 (first direction D ₁ ) is longer than that of the first fixed end connecting portion 441 . The length of the fixed end (not shown) in the direction parallel to 441 (first direction D ₁ ) is longer.

The first laminated structure 401 has a first fixed end connection part 441 at the first fixed end part 427. The first fixed end connection part 441 is formed by welding the base sheet first part 405a to the base sheet second part 405b. composed of welded parts. The first fixed end connecting portion 441 extends in the first direction _D1 and connects the first base sheet portion 405a to the second base sheet portion 405b.

The first laminated structure 401 is connected to the first free end portion 429 by a free end connecting portion 453 composed of an adhesive. Specifically, the free end connection part 453 is composed of a first free end connection part 455 , a second free end connection part 457 , and a third free end connection part 459 . The first free end connecting part 455 is arranged at the center of the top surface (not attached) of each of the eight 1Ω ₂ structures 447 of the first sheet part 407 and the eight 2Ω ₁ structures of the second sheet part 409 449, and is partially connected to the first sheet portion 407 and the second sheet portion 409.

Moreover, the second free end connecting portion 457 is disposed at the center of the top surface (not attached) of each of the seven _2Ω2 structures 451 of the second sheet portion 409, and partially connects the second sheet portion 409 and the base. Flakes Part 2 405b. Furthermore, the third free end connecting portion 459 is disposed at the center of the top surface (not attached) of each of the seven _1Ω1 structures 445 of the first sheet portion 407, and partially connects the first sheet portion 407 and Basic Sheet Part 1 405a.

The second laminated structure 403 includes a second fixed end connection part 443 and a free end connection part (not labeled). The second fixed end connection part 443 and the free end connection part (not attached) of the second laminated structure 403 are the same as the first fixed end connection part 441 and the free end connection part 453 of the first laminated structure 401, respectively. Therefore, the explanation is omitted.

If the gripping portion 413 of the non-expanded cleaning sheet 1 is held and unfolded in the second direction D ₂ , specifically in the second direction D ₂₁ , the first laminated structure 401 and the second layer The accumulation structure 403 forms a first cleaning sheet portion 415 and a second cleaning sheet portion 417 respectively.

In the unfolded state of the cleaning sheet 1, the first free end portion 429 of the first sheet portion 407 of the first cleaning sheet portion 415 and the first free end portion 429 of the second sheet portion 409 are respectively in the first direction D. ₁₁ (the other first direction D ₁₂ ) has a first reciprocating structure 461 and a second reciprocating structure 463 that alternately reciprocate toward the first direction D ₂₁ and the other direction D ₂₂ . Moreover, the second free end portion 437 of the third sheet portion 423 of the second cleaning sheet portion 417 and the second free end portion 437 of the fourth sheet portion 425 are connected in the first direction D ₁₁ (the other direction of the first direction). D ₁₂ ) has a third reciprocating structure 465 and a fourth reciprocating structure 467 that alternately reciprocate in the first direction D ₂₁ and the other direction D ₂₂ .

The cleaning sheet 1 is, for example, used in a double-sided cleaning type floor cleaning tool 481. Each of the first cleaning sheet part 415 and the second cleaning sheet part 417 corresponds to the cleaning surface of the floor cleaning tool 481. The cleaning sheet 1 is The grip part 413 of 1 is attached to the mounting part (not shown) of the floor cleaning tool and used. Examples of the double-sided cleaning type floor cleaning tool 481 include those described in Japanese Patent Application Laid-Open No. 1997-164110, Utility Model Registration No. 3152632, and the like. The cleaning sheet 1 according to the fourth embodiment is the same as the cleaning sheet 1 according to the first embodiment and the third embodiment except for the other parts, so the description is omitted.

＜＜Fifth embodiment＞＞ 20 and 21 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "the fifth embodiment"). Specifically, FIG. 20 is a perspective view of the front and planar sides of the cleaning sheet 1 in the unfolded state. FIG. 21 is a perspective view of the front, planar and left side of the cleaning sheet 1 in a non-deployed state.

The cleaning sheet 1 according to the fifth embodiment is a cleaning sheet that is attached to a handheld cleaning tool (not shown) and used. Furthermore, the cleaning sheet 1 according to the fifth embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 can be formed into an unexpanded state and an unfolded state. Specifically, it can be formed into a single cleaning sheet portion 501 in an unfolded state and a single laminated structure 503 in an unexpanded state. In the cleaning sheet 1 according to the fifth embodiment, the cleaning sheet portion 501 has a cleaning sheet portion angle of approximately 180° in the unfolded state.

The cleaning sheet 1 (cleaning sheet portion 501) in the unfolded state has a first direction D ₁ , an orthogonal direction D _C and a thickness direction T that are orthogonal to each other, and a second direction D ₂ . In the unfolded state of the cleaning sheet 1 (cleaning sheet portion 501), the first direction D ₁ , the orthogonal direction D _C , the thickness direction T, and the second direction D ₂ are the same as those in the first embodiment. The cleaning sheet 1 in the non-deployed state (laminated structure 503) has first directions D ₁ , The orthogonal direction D _C and the thickness direction T, and the second direction D ₂ .

The cleaning sheet 1 according to the fifth embodiment has a laminated structure 503 in which a base sheet 1st part 505a, a 1st sheet part 507, a 2nd sheet part 509, and a 3rd sheet part are laminated|stacked in a non-expanded state. 511. The 4th sheet part 513, the 5th sheet part 515, the 6th sheet part 517, the 7th sheet part 519, the 8th sheet part 521, the 9th sheet part 523, the 10th sheet part 525, the 11th sheet part 527, The twelfth sheet part 529, the 13th sheet part 531, the 14th sheet part 533, and the base sheet second part 505b constitute a total of 16 sheet parts.

In addition, the first base sheet part 505a and the second base sheet part 505b are composed of an integrated base sheet 505. The first base sheet part 505a and the second base sheet part 505b are formed by aligning the integrated base sheet 505 with the center line in the first direction. It is zoned CL ₁ . The first direction center line CL ₁ is an imaginary line extending toward the first direction D 1 through the center of the second direction D ₂ of the cleaning sheet 1 in the unfolded _state . The first direction center line CL ₁ corresponds to the folding line of the integrated base sheet 505 in the laminated structure 503 .

The base sheet first portion 505a includes a grip portion forming sheet first portion 535a for forming the grip portion 91 disposed on the surface opposite to the first sheet portion 507. . Furthermore, the base sheet second part 505b is provided with a grip forming sheet second part 535b for forming a grip disposed on the surface opposite to the fourteenth sheet part 533. Department 91.

Furthermore, the cleaning sheet 1 in the non-expanded state is provided with a pair of unfolding grips 85. The pair of unfolding grips 85 are formed by making the base sheet first part 505a and the base sheet second part 505b smaller than the plurality of sheet parts ( That is, the first sheet portion 507 to the fourteenth sheet portion 533) are formed to be longer on the other side of the first direction _D12 . The pair of unfolding grips 85 are separated by a predetermined distance d in the thickness direction T. Therefore, the user can easily unfold the cleaning sheet 1 by holding the pair of unfolding grips 85 .

Each of the first sheet portion 507 to the fourteenth sheet portion 533 is not folded in the first direction D ₁ but extends in a direction parallel to the first direction D ₁ . Each of the first sheet portion 507 to the fourteenth sheet portion 533 has a fixed end (not marked) and a free end (not marked). Each of the first sheet portion 507 to the seventh sheet portion 519 is connected to the base sheet first portion 505a through a fixed end connecting portion (not designated) disposed at a fixed end portion (not designated). Furthermore, each of the eighth sheet portion 521 to the fourteenth sheet portion 533 is connected to the base sheet second portion 505b through a fixed end connection portion (not designated) disposed at a fixed end portion (not designated).

Each of the first sheet portion 507 to the fourteenth sheet portion 533 is configured such that the extension length of the free end portion in the direction parallel to the fixed end connection portion (first direction D ₁ ) is longer than that in the direction parallel to the fixed end connection portion. The length of the fixed end in (the first direction D ₁ ) is longer. Furthermore, each of the base sheet first part 505a and the base sheet second part 505b is also configured such that the extension length of the free end in the direction parallel to the fixed end connection part (first direction D ₁ ) is longer than that connected to the fixed end. The length of the fixed end portion in the direction parallel to the first direction (first direction D ₁ ) is longer.

In the laminated structure 503, the fixed ends of the first sheet portion 507 to the seventh sheet portion 519 are separated by a predetermined distance e in the orthogonal direction D _C. Furthermore, the fixed ends (fixed end connecting portions) of the eighth sheet portion 521 to the fourteenth sheet portion 533 are separated by a predetermined distance e in the orthogonal direction D _C. In addition, the fixed end portion (fixed end connecting portion) of the seventh sheet portion 519 and the first direction center line CL ₁ are separated by 50% (0.5e) of the predetermined distance e, and the first direction center line CL ₁ and the eighth sheet The fixed end portion (fixed end connecting portion) of the portion 521 is separated by 50% (0.5e) of the predetermined distance e. In the laminated structure 503, the end portions (not labeled) of the first sheet portion 507 to the fourteenth sheet portion 533 on the D _C2 side in the other orthogonal direction are arranged at predetermined positions.

Moreover, in the laminated structure 503, the free ends (not designated) of the first sheet portion 507 to the fourteenth sheet portion 533 are connected by a free end connecting portion (not designated) formed of an adhesive. . The free end connecting portion (not designated) of the cleaning sheet 1 according to the fifth embodiment is the same as the free end connecting portion 73 of the cleaning sheet 1 according to the second embodiment, so the description is omitted.

In the unfolded cleaning sheet 1, the fixed ends (fixed end connection portions) of the first sheet portion 507 to the fourteenth sheet portion 533 are each separated by a predetermined distance e in the orthogonal direction D _C. Furthermore, in the cleaning sheet 1 in the unfolded state, the height of the first sheet portion 507 to the fourteenth sheet portion 533 in the thickness direction T tends to be higher as it approaches the first direction center line CL ₁ .

Each of the first sheet portion 507 to the seventh sheet portion 519 is configured such that the extended length of the free end is longer than the length of the fixed end. Therefore, when the cleaning sheet 1 is deformed from the non-expanded state to the expanded state, the free ends of each of the first sheet portion 507 to the seventh sheet portion 519 contract in the direction parallel to the fixed end connection portion (the first direction D ₁ ). The amplitude of each of the first sheet portion 507 to the seventh sheet portion 519 can be increased, and the wall surface of each of the first sheet portion 507 to the seventh sheet portion 519 can be cleaned while softly changing its shape. Clean the surface. The cleaning sheet 1 according to the fifth embodiment is the same as the cleaning sheet 1 according to the second embodiment except for the other parts, so the description is omitted.

＜＜Sixth Embodiment＞＞ 22 and 23 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "sixth embodiment"). Specifically, FIG. 22 is a perspective view of the front, planar and left side of the cleaning sheet 1 attached to the handheld cleaning tool 251 . FIG. 23 is a diagram for explaining a method of forming the cleaning sheet 1 .

The cleaning sheet 1 according to the sixth embodiment is a cleaning sheet that is attached to a handheld cleaning tool 251 and used. Furthermore, the cleaning sheet 1 according to the sixth embodiment is a wet type cleaning sheet containing a chemical solution. The cleaning sheet 1 according to the sixth embodiment is composed of a single cleaning sheet portion 633 . In addition, the cleaning sheet 1 according to the sixth embodiment does not have an unexpanded state (folded state), but the laminate structure 623 shown in FIG. 23 before the cleaning sheet 1 is formed is regarded as the cleaning sheet 1 in the unexpanded state. layered structure, and explain its structure. In the unfolded state of the cleaning sheet 1 according to the sixth embodiment, the cleaning sheet portion 633 has a cleaning sheet portion angle of approximately 360°.

The cleaning sheet 1 (cleaning sheet portion 633) in the unfolded state includes a first direction D ₁ , an orthogonal direction _DC , a thickness direction T that are orthogonal to each other, and a second direction D ₂ . The first direction D ₁ , the orthogonal direction _DC , the thickness direction T, and the second direction D ₂ of the cleaning sheet 1 (cleaning sheet portion 633) in the unfolded state are the same as those in the first embodiment. The laminated structure 623 has a first direction D ₁ , an orthogonal direction D _C , and a thickness direction T such that the cleaning sheet 1 (cleaning sheet portion 633 ) in the unfolded state and the base sheet second portion 601 b described below have the same direction. , and the second direction D ₂ .

The cleaning sheet 1 according to the sixth embodiment has a lamination structure 623 in which a base sheet first part 601a, a first sheet part 603, and a second sheet part are laminated in the following order before the cleaning sheet 1 is formed. 605. 3rd sheet part 607, 4th sheet part 609, 5th sheet part 611, 6th sheet part 613, 7th sheet part 615, 8th sheet part 617, 9th sheet part 619, 10th sheet part 621, and base sheet part 2 601b.

In the laminated structure 623, each of the first sheet portion 603 to the tenth sheet portion 621 has a portion protruding in one direction T ₁ in the thickness direction, similarly to the second sheet portion 31 of the cleaning sheet 1 in the first embodiment. The complex Ω ₁ structure (not attached) and the complex Ω ₂ structure (not attached) protruding in the other direction T ₂ in the thickness direction, each of the complex Ω ₁ structure and each of the complex Ω ₂ structure have opposite directions but have have the same shape and are alternately arranged toward the first direction _D1 .

The laminated structure 623 has a fixed end 625 and a free end 627. Each of the fixed end 625 and the free end 627 extends in a direction parallel to the first direction _D1 . The fixed end 625 and the free end 627 are spaced apart. They are arranged apart from each other in the second direction _D2 along the central portion 629 .

Moreover, each of the first sheet portion 603 to the tenth sheet portion 621 is configured in a direction parallel to the fixed end connecting portion 631 described later (the first direction D ₁ ), similarly to the cleaning sheet 1 according to the first embodiment. The elongation length of the free end portion (not shown) is longer than the length of the fixed end portion (not shown) in the direction parallel to the fixed end connecting portion 631 (first direction D ₁ ).

Each of the first sheet part 603 to the tenth sheet part 621 is composed of a water-needle nonwoven fabric containing heat-fusible fibers and water-retentive fibers, and contains a chemical solution. Furthermore, the base sheet first part 601a and the base sheet second part 601b are made of spunbond nonwoven fabric made of heat-fusible fibers.

The laminated structure 623 has a fixed end connection portion 631 at the fixed end portion 625. The fixed end connection portion 631 is composed of a welded portion formed by welding the first base sheet portion 601a to the second base sheet portion 601b. The fixed end connecting portion 631 extends in the first direction _D1 and connects the first base sheet portion 601a to the second base sheet portion 601b.

The laminated structure 623 includes a free end connecting portion (not reference numeral) in the free end portion 627 similar to the free end connecting portion 73 of the cleaning sheet 1 in the first embodiment. Specifically, like the cleaning sheet 1 in the first embodiment, the first sheet portion 603 to the tenth sheet portion 621 are substantially at the center (the first direction D ₁ ) of the top surface of the Ω ₁ structure of the adjacent sheet portions. center) and the approximate center of the top surface of the Ω ₂ structure (the center of the first direction D ₁ ) are connected by a free end connecting part (not attached) including a plurality of free end connecting parts (not assigned) Engagement. Furthermore, the approximate center of the top surface of the Ω ₁ structure of the first sheet portion 603 (the center in the first direction D ₁ ) and the base sheet first portion 601 a are connected by a portion (not designated with a symbol) including a plurality of free ends. The free end connecting part (not attached with a symbol) is connected. Furthermore, the approximate center of the top surface of the Ω ₂ structure of the tenth sheet portion 621 (the center in the first direction D ₁ ) and the base sheet second portion 601 b are connected by a portion (not designated with a symbol) including a plurality of free ends. The free end connecting part (not attached with a symbol) is joined.

In the laminated structure 623, the first base sheet portion 601a is spread out about 360° in the second direction _D2 (specifically, the second direction D21) so that the first base sheet portion 601a is separated from the second base sheet portion _601b . The first base sheet portion 601a and the second base sheet portion 601b are opposed to each other, and the cleaning sheet 1 is formed by welding the free ends 627 of the first base sheet portion 601a and the second base sheet portion 601b.

The first sheet portion 603 to the tenth sheet portion 621 are not connected to each other at the central portion 629 . Moreover, the 10th sheet part 621 and the 2nd base sheet part 601b are not connected to each other at the center part 629, and the 1st sheet part 603 and the 1st base sheet part 601a are not connected to each other at the center part 629. Furthermore, the base sheet first part 601a and the base sheet second part 601b are joined to each other at the fixed end part 625 and the free end part 627, but are not joined to each other at the central part 629.

Therefore, the cleaning sheet 1 is inserted into the central portion 629 of the first sheet portion 603 to the tenth sheet portion 621 by inserting the cleaning sheet mounting portion 253a and the cleaning sheet mounting portion 253b of the handheld cleaning tool 251 shown in the first embodiment. , the central portion 629 of the tenth sheet portion 621 and the second base sheet portion 601b, the central portion 629 of the first sheet portion 603 and the first base sheet portion 601a, and the first base sheet portion 601a and the second base sheet portion 601b. It can be used at any position of the central part 629.

The cleaning sheet 1 according to the sixth embodiment has no directionality in the second direction _D2 and can be cleaned. The other parts of the cleaning sheet 1 according to the sixth embodiment are the same as the cleaning sheet 1 according to the first embodiment, and therefore the description thereof is omitted.

＜＜Seventh Embodiment＞＞ 24 to 26 are diagrams for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "the seventh embodiment"). Specifically, FIG. 24 is a perspective view of the front, plane and left side of the cleaning sheet 1 . Fig. 25 is a view of the first base sheet portion 705a and the second base sheet portion 705b of the first cleaning sheet portion 701. FIG. 26 is a perspective view of a hand-held cleaning tool 751 for cleaning the sheet 1 . In addition, the handheld cleaning tool 751 includes a cleaning sheet mounting portion 753 for mounting the cleaning sheet 1, a handle portion 755 for the user to hold, and a protruding portion 757 for fixing the cleaning sheet 1.

The cleaning sheet 1 in the unfolded state has a first direction D ₁ , an orthogonal direction D _C and a thickness direction T that are orthogonal to each other, and a second direction D ₂ . In addition, the first cleaning sheet part 701 and the second cleaning sheet part 703 described later are facing opposite sides to each other, but the first direction D ₁ , the orthogonal direction D _C and the thickness direction T of the cleaning sheet 1 in the unfolded state, and the second The direction D ₂ is set with the first cleaning sheet portion 701 as a reference.

The cleaning sheet 1 according to the seventh embodiment includes two cleaning sheet parts, namely, a first cleaning sheet part 701 and a second cleaning sheet part 703 . The first cleaning sheet portion 701 includes a first base sheet portion 705a, a first sheet portion 707, a second sheet portion 709, a third sheet portion 711, a fourth sheet portion 713, and a second base sheet portion 705b.

The first cleaning sheet portion 701 according to the seventh embodiment is substantially the same as the cleaning sheet 1 according to the first embodiment, but is different from the cleaning sheet 1 according to the first embodiment in that it does not have a grip portion forming The point of the first sheet portion 11a and the second sheet portion 11b for forming the grip portion. Furthermore, in the first cleaning sheet part 701 according to the seventh embodiment, the base sheet 705 composed of the first base sheet part 705a and the second base sheet part 705b is longer than the first sheet part 707 to the fourth sheet part 713. The length in the orthogonal direction D _C is short, and first introduction parts 731 are provided at both ends in the first direction D ₁ . The first introduction parts 731 allow the handheld cleaning tool 751 to be easily inserted into the cleaning sheet mounting part 753 . The cleaning sheet 1 according to the first embodiment is different. The first introduction part 731 includes a first slit part 735 for inserting the protruding part 757 of the handheld cleaning tool 751 .

The second cleaning sheet portion 703 includes a third base sheet portion (not shown), a fifth sheet portion 723, a sixth sheet portion 725, a seventh sheet portion 727, an eighth sheet portion 729, and a fourth base sheet portion (not shown). Show). The second cleaning sheet portion 703 has the same structure as the first cleaning sheet portion 701, so the description thereof is omitted.

The cleaning sheet 1 is formed as follows. The first cleaning sheet part 701 and the second cleaning sheet part 703 are divided into a first base sheet part 705a and a second base sheet part 705b respectively as a fourth base sheet part (not shown) and a third base sheet part (not shown). (shown) are superimposed in opposite directions. Next, the first base sheet portion 705a and the fourth base sheet are joined together to form a grip portion 739 for the hand-held cleaning tool 751 to hold the cleaning sheet 1 between the first cleaning sheet portion 701 and the second cleaning sheet portion 703. The sheet portion (not shown) is joined to the second base sheet portion 705b and the third base sheet portion (not shown).

The cleaning sheet 1 according to the seventh embodiment has no directionality in the second direction _D2 and can be cleaned. The other parts of the cleaning sheet 1 according to the seventh embodiment are the same as the cleaning sheet 1 according to the first embodiment, and therefore the description thereof is omitted.

The cleaning sheet of the present invention is excellent in appearance by coloring multiple sheet portions. ＜＜Eighth Embodiment＞＞ FIG. 27 is a diagram for explaining the cleaning sheet 1 according to another embodiment of the present invention (hereinafter referred to as "eighth embodiment"). Specifically, FIG. 27 is a front view of the cleaning sheet 1 attached to the hand-held cleaning tool 251 in an unfolded state. The cleaning sheet 1 according to the eighth embodiment is substantially the same as the cleaning sheet 1 according to the first embodiment, so only the differences will be described.

In the cleaning sheet 1 according to the eighth embodiment, each of the second sheet portion 31 and the third sheet portion 51 is composed of a blue mesh sheet and a white mesh sheet containing heat-fusible fibers and water-retentive fibers. Made of a laminate of water-stitched non-woven fabrics. The mesh sheet constitutes the inner surface of each of the second sheet part 31 and the third sheet part 51 , and the water-needle nonwoven fabric constitutes the outer surface of each of the second sheet part 31 and the third sheet part 51 . In addition, each of the first sheet portion 21 and the fourth sheet portion 61 is composed of a white water-needle nonwoven fabric containing heat-fusible fibers and water-retentive fibers.

Therefore, in the cleaning sheet 1 according to the eighth embodiment, depending on the angular relationship, the closer to the fixed end connection part 71, the blue appears relatively thicker, and the farther away from the fixed end connection part 71 (closer to the free end connection part) Part) tends to look relatively light blue, so it has excellent appearance. The other parts of the cleaning sheet 1 according to the eighth embodiment are the same as the cleaning sheet 1 according to the first embodiment, and therefore the description thereof is omitted.

The cleaning sheet of the present invention has a first direction and a second direction constituting a circumferential direction of the first direction. The first direction and the second direction are as described above. In addition, the cleaning sheet of the present invention has a second direction constituting the circumferential direction of the first direction. However, this does not mean that the orthogonal cross section of the cleaning sheet in the unfolded state that is orthogonal to the first direction has a circle along the second direction. Arc shape (for example, the above-mentioned orthogonal cross-section is a circle, a sector, etc.). The cleaning sheet of the present invention in the unfolded state may be in a curved shape (for example, a circular arc, an elliptical arc), a linear shape, or any combination thereof along the second direction.

The cleaning sheet of the present invention may include one or a plurality of cleaning sheet parts. Each of the one or plurality of cleaning sheet parts has a basic sheet part and a plurality of sheet parts. When the cleaning sheet of the present invention includes a plurality of cleaning sheet parts, the cleaning sheet may include a plurality of cleaning sheet parts in any form. The cleaning sheet may include a plurality of cleaning sheet parts arranged continuously or separated by a predetermined distance in, for example, a first direction, an orthogonal direction, or the like. In this case, the cleaning sheet may be, for example, a plurality of cleaning sheet portions such that the basic sheet portions of each of the plurality of cleaning sheet portions are connected to different bodies (for example, a holding sheet) continuously or separated by a predetermined distance. The base sheet portions of the plurality of cleaning sheet portions may be connected together, for example, the base sheet portions of the plurality of cleaning sheet portions may be composed of an integrated sheet.

The plurality of cleaning sheet portions of the cleaning sheet may be disposed on one cleaning surface of a single-sided cleaning type floor cleaning tool, or may be disposed on both cleaning surfaces of a double-sided cleaning type floor cleaning tool.

Furthermore, the cleaning sheet may include, for example, a plurality of cleaning sheet portions arranged continuously in the second direction or separated by a predetermined distance. In this case, the cleaning sheet may be, for example, a plurality of cleaning sheet portions connected in such a manner that the base sheet portions of the plurality of cleaning sheet portions face each other.

For example, the cleaning sheet includes the following two cleaning sheet portions, and the two cleaning sheet portions have a total cleaning sheet portion angle of 360° in the unfolded state (for example, each of the two cleaning sheet portions has a cleaning sheet portion angle of 180° ), the cleaning sheet can be formed as follows. ・The first cleaning sheet part (including the basic sheet part 1 and the plurality of first sheet parts) ・Second cleaning sheet part (including basic sheet part 2 and plural second sheet parts)

Connect the first cleaning sheet part and the second cleaning sheet part so that the base sheet part 1 and the base sheet part 2 face each other (for example, connect the base sheet part 1 and the base sheet part 2, connect the first flake part and 2nd flake part). Examples of the above-mentioned connection include adhesives, welding of heat-fusible fibers, and the like.

Furthermore, the cleaning sheet includes the following three cleaning sheet portions, and in the unfolded state, the three cleaning sheet portions have a total cleaning sheet portion angle of 360° (for example, each of the three cleaning sheet portions has a cleaning sheet portion angle of 120° angle), the cleaning sheet can be formed as follows. ・The first cleaning sheet part (including the basic sheet part 1 and the plurality of first sheet parts) ・Second cleaning sheet part (including basic sheet part 2 and plural second sheet parts) ・The third cleaning sheet part (including the third basic sheet part and plural third sheet parts)

Align the first cleaning sheet part to the third cleaning sheet part so that the base sheet part 1, the base sheet part 2, and the third base sheet part face each other (for example, a part of the base sheet part 1 and the base sheet part 2 The remaining parts of the first part of the base sheet and the part of the third base sheet face each other, and the remaining part of the second part of the base sheet and the remaining part of the third base sheet face each other). . Examples of the above-mentioned part and the remaining portion include divisions formed by integrally fixed end portions of each of the first to third base sheet portions. Examples of the above-mentioned connection include adhesives, welding of heat-fusible fibers, and the like.

Each of the plurality of sheet portions extends in a direction along the first direction and has a fixed end and a free end. In addition, the division between the fixed end and the free end is as described above.

The fixed end portions of each of the plurality of sheet portions are fixed end connecting portions extending in a direction along the first direction, preferably in a direction parallel to the first direction, thereby being connected to the base sheet portion. The above-mentioned fixed end connecting portion includes a bonding portion formed by an adhesive, a welded portion formed by a thermally fusible fiber, a folded portion of a continuous sheet portion, and the like. The fixed end connecting portion may be discontinuous or continuous as long as it extends in a direction along the fixed end.

The plurality of sheet parts may be connected to the base sheet as a single body by the fixed ends of each of the plurality of sheet parts, or at least a part (preferably 40% or more, more preferably 60% or more) of the plurality of sheet parts may be connected to the base sheet. It is better to be more than 70%, and still better to be more than 80%, and still better to be more than 90%, and still better to be 100% of the number of pieces) of the fixed end after integration. The parts are connected to the base sheet part. By connecting the fixed end of the sheet part to the base sheet as a single body, the base sheet part and the cleaning sheet can be suppressed from becoming hard, and by forming the integrated fixed end, they are not connected to the integrated fixed end of the base sheet part. The softness of the cleaning sheet is excellent, and the cleaning sheet easily deforms along with the surface to be cleaned, so it is not easy to damage the surface to be cleaned.

At least a part of the plurality of flake parts is preferably 40% or more, more preferably 60% or more, still more preferably 70% or more, still more preferably 80% or more, still more preferably 90% or more, and More preferably, 100% of the free end portions of the pieces extend in the direction along the first direction while reciprocating in the second direction, and are partially connected by free end connecting portions including a plurality of free end connecting portions. The sheet portions adjacent to the second direction among the plurality of sheet portions are connected. This is from the perspective of the cleaning properties of the surface to be cleaned.

If using the literal method, in the cleaning sheet of the present invention, between the "n-th free end connection part" and the "n-th free end connection part" and the "(n+1)-th free end connection part" adjacent in the second direction It is preferable that at least a part (more preferably 40% or more, still more preferably 60% or more) of the plurality of n-th free-end connecting parts constituting the n-th free-end connecting part is at least a part (more preferably 40% or more, still more preferably 60% or more), for example, all except the two ends in the first direction. ), and preferably at least a part (more preferably 40% or more, still more preferably 60% or more) of the (n+1)th free end connection portion constituting the (n+1)th free end connection portion, for example All other than both ends in the first direction) are at positions that are not overlapped in the second direction. This is from the viewpoint that a reciprocating structure can be easily formed in a plurality of sheet portions of the cleaning sheet in the unfolded state.

In addition, the above-mentioned "positions that overlap in the second direction" refer to positions that overlap in the thickness direction on both sides facing each other across the constituent members constituting the sheet portion. Therefore, when the target sheet portion is a plane without a folding structure, the above-mentioned "positions repeated in the second direction" are interpreted literally.

On the other hand, when the target sheet portion has a folded structure, the plurality of n-th free end connecting portions and the plurality of (n+1)th free end connecting portions are not located across the target sheet portion. Positions that overlap in the thickness direction on two opposite surfaces of a member are not allowed to overlap in the thickness direction, but are excluded. This is because in the unfolded state of the cleaning sheet, it contributes to the reciprocating structure of the target sheet portion.

For example, when the target sheet portion has a plurality of Ω structures (Ω ₁ structure and Ω ₂ structure), even if one of the plural n-th free end connection parts is arranged at the first top of the Ω ₁ structure, and the plurality of ( One of the n+1) free end connecting parts is arranged at the first bottom (the second top of the Ω ₂ structure), and one of the plural nth free end connecting parts and the plural (n+1)th free end connecting parts Even if one of them overlaps in the thickness direction, one of the plurality of n-th free end connection parts and one of the plurality of (n+1)th free end connection parts are not arranged at "the positions that overlap in the second direction" , but except.

The cleaning sheet of the present invention may further include an n-th auxiliary connecting portion that connects two adjacent sheets extending continuously or intermittently from at least a part of the plurality of n-th free end connecting portions toward the fixed end. Thin section. This makes it easy to maintain the reciprocating structure formed by the n-th auxiliary connecting portion between the two adjacent sheet portions. In addition, the entire n-th subsidy connection part may be referred to as the n-th subsidy connection part. The n-th auxiliary connection portion includes a bonding portion formed by an adhesive, a welded portion formed by a thermally fusible fiber, a folded portion of a continuous sheet portion, and the like.

In the cleaning sheet of the present invention, the cleaning sheet portion angle of the cleaning sheet portion is any angle, ranging from more than 0° to 360°, preferably 150° or more. This is from the perspective of the cleaning properties of the surface to be cleaned. When the base sheet portion is further provided with a cleaning tool or a member for a grip portion for the user to hold, it is preferable that the angle of the cleaning sheet portion is 150° or more and less than 360°. This is from the perspective of cleaning properties of the surface to be cleaned. Furthermore, when the base sheet portion is used as a cleaning tool or a grip portion for the user to hold, the angle of the cleaning sheet portion is 360°.

In the cleaning sheet portion of the cleaning sheet of the present invention, the number of the plurality of sheet portions is not particularly limited, and the desired angle of the cleaning sheet portion can be changed depending on the length of the sheet portion, etc. For example, for every 180° angle of the cleaning sheet portion, the number of plural sheet portions may be, for example, 3 to 12 sheets.

In the cleaning sheet of the present invention, preferably 40% or more of the plurality of sheet portions, more preferably 60% or more, still more preferably 80% or more, and still more preferably 100% of the sheet portions include: A plurality of first tops protruding in one direction of the second direction, each of which has a first top surface (Ω ₁ structure); and a plurality of second tops protruding in the other direction of the second direction, each of which has a first top surface. 2 top ones (Ω ₂ structure). Thereby, the wave height of the reciprocating structure of the corresponding sheet portion of the cleaning sheet in the unfolded state can be increased.

Furthermore, in the cleaning sheet of the present invention, preferably 40% or more of the plurality of sheet portions, more preferably 60% or more, still more preferably 80% or more, and still more preferably 100% of the sheet portions have The verbosity is preferably 120% or more, more preferably 150% or more, still more preferably 200% or more, and still more preferably 250% or more. Thereby, the wave height of the reciprocating structure of the corresponding sheet portion of the cleaning sheet in the unfolded state can be increased.

Furthermore, in the above case, it is preferable that the plurality of free end connecting portions constituting the free end connecting portion are arranged on the first top surface and the second top surface. Thereby, the wave height of the reciprocating structure of the corresponding sheet portion of the cleaning sheet in the unfolded state can be increased.

Moreover, in the above case, in a top view, the total area of the plurality of first top surfaces is preferably 50% or more and 100% or less of the area of the sheet portion, more preferably 70% or more and 100% or less, and still more preferably It is more than 90% and less than 100%. Thereby, the degree of freedom in arranging the plurality of free end connecting parts constituting the free end connecting part on the first top surface becomes higher, and the redundancy of the corresponding sheet parts becomes larger, so the waves of the reciprocating structure of the matching sheet parts can be increased. high.

Moreover, in the above case, in a top view, the total area of the plurality of second top surfaces is preferably 50% or more and 100% or less of the area of the sheet portion, more preferably 70% or more and 100% or less, and still more preferably It is more than 90% and less than 100%. Thereby, the degree of freedom of arranging the plurality of free end connecting parts constituting the free end connecting part on the second top surface becomes higher, and the redundancy of the corresponding sheet parts becomes larger, so the waves of the reciprocating structure of the matching sheet parts can be increased. high.

In the cleaning sheet of the present invention, at least a part of the plurality of sheet portions is configured such that the extension length of the free end portion in a direction parallel to the fixed end connection portion is longer than the extension length of the free end portion in a direction parallel to the fixed end connection portion. The length of the fixed end is longer, that is, it has a free end extended length configuration. Thereby, not only the free end but also the central part between the fixed end and the free end can be used as a cleaning surface to clean the surface to be cleaned, so the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

Examples of the free end extended length structure include those in which at least part of the plurality of sheet portions has a folded portion (for example, as shown in the first embodiment), or has a substantially polygonal shape (for example, a triangle, a quadrangle, a trapezoid, or a pentagon). ), roughly circular, roughly elliptical and other established shapes. In addition, when at least part of the plurality of sheet parts has the above-mentioned predetermined shape, the fixed end and the free end must be selected such that the extension length of the free end in a direction parallel to the fixed end connection is longer than that of the fixed end connection. The length of the fixed ends is longer in the parallel direction.

In the cleaning sheet of the present invention, when at least part of the plurality of sheet portions has the above-mentioned folding portion, the extension length of the free end portion in the direction parallel to the fixed end connecting portion and the fixed end portion in the direction parallel to the fixed end connecting portion are The preferred relationship between the lengths of the ends is the same as the verbosity mentioned above.

In the cleaning sheet of the present invention, when at least part of the plurality of sheet portions has the above-mentioned predetermined shape, the extension length of the free end portion in the direction parallel to the fixed end connection portion is longer than the extension length of the fixed end portion in the direction parallel to the fixed end connection portion. The length of the end portion is longer in the range of preferably 1.05 times or more, more preferably 1.1 times or more, and still more preferably 1.20 times or more, and is preferably 1.60 times or less, more preferably 1.50 times or less, and still more preferably 1.60 times or less, more preferably 1.50 times or less, and still more preferably It is better to be longer within the range of 1.45 times or less. Thereby, the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

In the cleaning sheet of the present invention, when at least part of the plurality of sheet parts has the above-mentioned predetermined shape, the end of the free end is within a predetermined range from the edge of the fixed end (specifically, the free end and the fixed within the distance between the ends) is preferred.

Specifically, as shown in FIG. 29 , the sheet portion 1011 has a fixed end 3 and a free end 5 . The fixed end 3 and the free end 5 are parallel to the first direction D ₁ and are only separated by a distance R. The fixed end 3 has a first end edge 1013 and a second end edge 1015 at both ends in the first direction D ₁ , and the free end 5 has a first end 1017 and a second end edge 1015 at both ends in the first direction D ₁ . 2 end 1019. Furthermore, the first end 1017 of the free end 5 is within the distance R from the first edge 1013 of the fixed end 3 , and the second end 1019 of the free end 5 is within a distance R from the first edge 1013 of the fixed end 3 . The second end edge 1015 is within the range of distance R. Thereby, when the cleaning sheet is in the unfolded state, even if the sheet portion 1011 shrinks in the first direction D _{1 , the two ends of the cleaning sheet in the first direction D 1 are} less likely to protrude in the thickness direction than the portion between them. , it is easier to clean flat surfaces. In addition, when both ends of the cleaning sheet in the first direction D ₁ protrude in the thickness direction than the portion between them, cleaning of non-flat surfaces such as curved surfaces becomes easier.

The cleaning sheet of the present invention can be a wet type or a dry type, and in the cleaning sheet of the present invention, the basic sheet part and the plurality of sheet parts constituting the cleaning sheet part are not particularly limited, and may include sheets used in this technical field, such as Cloth (for example, nonwoven fabric, woven fabric, knitted fabric). The above-mentioned fabric may be a perforated sheet provided with a plurality of holes, or may be a non-porous sheet provided with no holes. In addition, the perforated sheet may be a perforated sheet formed by a water jet method or a needle rolling method described in Japanese Patent Application Laid-Open No. 2017-118963, for example.

Furthermore, the base sheet portion and the plurality of sheet portions may include mesh sheets. Examples of the mesh sheet include those having a mesh structure made of synthetic resin. Furthermore, the mesh sheet may independently constitute the base sheet part and the plurality of sheet parts, or may form the base sheet part and the plurality of sheet parts in a state of being attached to other sheet-like objects such as the fabric. In other words, each of the above-mentioned base sheet portion and the plurality of sheet portions may be a laminate of a mesh sheet and other sheet-like materials (for example, cloth). In the above laminate of mesh sheets, the mesh sheets may be arranged to constitute the inner surface or the outer surface of the laminate of mesh sheets.

For example, at least part of the base sheet portion and the plurality of sheet portions may all contain heat-fusible fibers. Thereby, the fixed end connection part, the free end connection part, and the desired auxiliary connection part can be easily formed from the welding part.

Examples of the heat-fusible fibers include synthetic fibers, such as heat-fusible fibers, such as polyolefin copolymers, such as polyethylene or polypropylene, and polyester copolymers, such as terephthalate copolymers. , such as polyethylene terephthalate (PET), polybutylene terephthalate, polypentylene terephthalate; polyamide copolymers, such as nylon 6 or nylon 6,6; acrylic Copolymers; polyacrylonitrile copolymers; or fibers formed from these denatured products, or combinations thereof.

In the cleaning sheet of the present invention, at least part of the base sheet portion and the plurality of sheet portions may all contain water-retentive fibers, for example. Thereby, the cleaning sheet has functions such as easily containing chemical liquid and easily absorbing liquid dirt. Examples of the water-retentive fibers include cellulose-based fibers such as pulp fibers, regenerated cellulose fibers, and semi-synthetic cellulose fibers. Examples of the regenerated cellulose fiber include: rayon fiber, such as viscose rayon made from viscose, polynosic fiber and modal fiber, copper ammonium salt made from cellulose Solution-made cuprammonium rayon fiber (also known as "cuprammonium fiber"); produced by an organic solvent spinning method using a mixed solution of organic compounds and water, that is, an organic solvent, without the use of cellulose derivatives Lycel (lycel) and tencel (tencel), etc. Examples of the semi-synthetic cellulose fibers include acetate fibers, such as triacetate fibers and diacetate fibers.

The above-mentioned mesh sheet, perforated sheet and non-porous sheet are based on the thickness of the mesh, and the dirt scraping performance is roughly in the following relationship. Mesh sheet＞Porous sheet＞Non-porous sheet In the case where the cleaning sheet of the present invention includes at least two of the above-mentioned mesh sheets, porous sheets, and non-porous sheets, from the viewpoint of dirt scraping properties, a high-scraping cleaning sheet having relatively high scraping properties can be used. The scrapable sheet and the low scraping sheet having relatively low scraping properties are configured as follows.

(i) In the cleaning sheet portion, the sheets with high scraping properties are arranged in the center (relatively many), and the sheets with low scraping properties are arranged in the ends (relatively many). If the highly scrapable sheet is arranged in the center of the cleaning sheet portion (relatively large), then in the unfolded state of the cleaning sheet, the highly scrapable sheet is arranged close to the surface to be cleaned (relatively large), and Low-scratching sheets are easily disposed on the periphery (relatively more often), so high-scraping sheets can sweep away dirt, while low-scraping sheets can wipe away dirt, thus improving the cleaning performance of the cleaning sheet.

(ii) When the cleaning sheet is divided into a front end region and a base end region, high scraping sheets (relatively many) are arranged in the front region, and low scraping sheets (relatively many) are arranged in the front area. basal region. By arranging the sheets with high scraping properties (relatively often) in the front end area, the front end area of the cleaning sheet can sweep away dirt, and by arranging the sheets with low scraping properties (relatively in large numbers) in the base end area. , cleaning the base end area of the sheet can wipe away dirt. The front end side region and the base end side region are arranged so that the cleaning sheet is centered in a predetermined direction (e.g., the first direction) and extends in a direction orthogonal to the predetermined direction (e.g., the orthogonal direction). Divided by orthogonal lines. Furthermore, the front end region is a region relatively far from the user, and the base end region is a region relatively close to the user.

Examples of the fabric include water-needle nonwoven fabrics, spunbonded nonwoven fabrics, and the like. When the above-mentioned cleaning sheet is a dry type, the plurality of sheet parts may include water-needle nonwoven fabrics, spunbond nonwoven fabrics, etc.

When the above-mentioned cleaning sheet is a wet type, the basic sheet part and the plurality of sheet parts may include water-needle nonwoven fabrics, spunbond nonwoven fabrics, etc. In addition, when the above-mentioned cleaning sheet is a wet type, the sheet portions arranged at both ends of the cleaning sheet portion are made of a relatively highly hydrophobic fabric, that is, a hydrophobic fabric (for example, a spunbond nonwoven fabric composed of synthetic fibers). It is composed of a relatively highly hydrophilic fabric, that is, a hydrophilic fabric (for example, a water-needle nonwoven fabric containing thermally fusible fibers and water-retentive fibers), and the sheet portion disposed between them is made of hydrophilic fabrics. The cloth contains medicinal liquid. Thereby, the medicinal solution retained by the hydrophilic fabric is less likely to exceed the hydrophobic fabric during use. For example, the medicinal solution retained by the hydrophilic fabric is less likely to exceed the hydrophobic fabric and come into contact with the user. Furthermore, the medicinal solution retained by the hydrophilic fabric is less likely to evaporate beyond the hydrophobic fabric.

When the cleaning sheet of the present invention is a wet type and the cleaning sheet can be in a non-expanded state, the cleaning sheet in the non-expanded state is preferably provided with a pair of unfolding grips for unfolding the cleaning sheet. When the cleaning sheet is of the wet type, the cleaning sheet in the non-expanded state may be made to adhere to each other due to the chemical liquid and make it difficult to expand the cleaning sheet. From the viewpoint of ease of deployment of the cleaning sheet, the pair of deployment grips preferably protrudes from the cleaning sheet in a non-deployed state toward the outside (for example, the first direction) of the cleaning sheet. It is preferable that the holding parts are arranged at a predetermined distance apart, and the pair of unfolding holding parts are preferably made of hydrophobic fabric. The cleaning sheet of the present invention may or may not include technologies known in the technical field.

The cleaning sheet of the present invention may further include a cleaning tool or a grip portion for a user to hold the cleaning sheet. The above-mentioned holding portion can be arranged at any position on the cleaning sheet. When the cleaning sheet of the present invention has a single cleaning sheet portion, for example, when the angle of the cleaning sheet portion is less than 360°, a holding portion can be provided on the surface of the base sheet portion opposite to the plurality of sheet portions. The above-mentioned grip portion is formed by connecting an additional sheet-like member, such as a grip portion forming sheet, to the base sheet portion, for example, and can be formed by welding, for example.

In the case where the cleaning sheet of the present invention has a single cleaning sheet portion and the cleaning sheet portion angle is 360°, the above-mentioned holding portion can be formed between mutually opposing portions of the base sheet portion. Examples of the mutually opposing portions include a case where the fixed end portion is composed of an integrated fixed end portion that is integrated with the fixed end portions of a plurality of sheet portions, and the integrated fixed end portion is connected to the base sheet portion. , the base sheet part 1 and the base sheet part 2 are divided into base sheet parts by integrating fixed ends.

Furthermore, the holding portion may be formed between the base sheet portion and two adjacent sheet portions among the plurality of sheet portions. The holding portion may be formed, for example, at a central portion between a base sheet portion and a sheet portion adjacent to the base sheet portion, or between two adjacent sheet portions.

Moreover, the above-mentioned grip part may be composed of a single grip part or may be composed of a plurality of grip parts. For example, by inserting the two-branched cleaning sheet mounting portion of the cleaning tool into the two gripping parts, or by inserting the user's thumb and index finger to little finger into the two gripping parts, the cleaning sheet can be prevented from deviating from the cleaning tool or user's hands. Examples of the two gripping portions include a pair of gripping portions with the fixed end connecting portion interposed therebetween.

When the cleaning sheet of the present invention is provided with a plurality of cleaning sheet parts, in addition to the holding part when the cleaning sheet of the present invention is provided with a single cleaning sheet part, the cleaning sheet of the present invention can be provided with a portion between the plurality of cleaning sheet parts (for example, the plurality of cleaning sheet parts). between the basic sheet parts) to form a grip.

When the cleaning sheet of the present invention is provided with a gripping portion, the gripping portion can extend in any direction. However, from the viewpoint of ease of gripping of the cleaning tool or the user, it is preferable that the gripping portion has a gripping portion facing the first direction. The insertion opening is open in one direction and extends in the direction along the first direction.

Furthermore, the insertion opening includes an extension portion extending in the first direction, preferably, for example, an extension portion extending away from the plurality of sheet portions in the first direction. Thereby, the user can easily insert the cleaning tool into the holding part, and the user can easily insert part of the body into the holding part.

The cleaning sheet of the present invention may not be in a non-deployed state, or may be in a non-deployed state, but preferably may be in a non-deployed state. Thereby, the cleaning sheet can be streamlined before or after use.

An example of the cleaning sheet in the non-expanded state includes a cleaning sheet portion in which a base sheet portion is folded across a plurality of sheet portions.

In the cleaning sheet according to another aspect of the present invention, at least a part of the free ends of the plurality of sheet portions are connected to the free ends of the plurality of sheet portions adjacent to the second direction through the free end connecting portions. part and has a reciprocating structure. Thereby, the cleaning sheet has excellent cleaning performance on the surface to be cleaned.

Furthermore, in the above-mentioned cleaning sheet, the two sheet portions connected by the free end connecting portion have mutually different reciprocating structures. Through this, the cleaning of the unfolding state The sheet system has excellent new area exposure and excellent cleaning performance on the surface to be cleaned.

1: Clean the flakes

3: Fixed end

5: Free end

7:Central Department

9, 503, 623: Laminated structure

11a, 535a: Part 1 of the sheet for forming the grip portion

11b, 535b: Part 2 of the sheet for forming the grip portion

13a, 301a, 405a, 505a, 601a, 705a: Basic flakes Part 1

13b, 301b, 405b, 505b, 601b, 705b: Basic flakes Part 2

15: Welding part for grip part

17, 501, 633: Cleaning the thin section

21, 101, 303, 407, 507, 603, 707: The first thin section

31, 103, 305, 409, 509, 605, 709: The second thin section

51, 105, 307, 423, 511, 607, 711: The third thin section

61, 107, 309, 425, 513, 609, 713: The fourth thin section

71:Fixed end connection part

73: Free end connection part

85: Grip part for unfolding

91, 313, 413, 739: Grip part

93, 315, 461: 1st reciprocating structure

95, 317, 463: 2nd reciprocating structure

97, 319, 465: 3rd reciprocating structure

99, 321, 467: 4th reciprocating structure

415, 701: 1st cleaning sheet part

417, 703: 2nd cleaning sheet part

515, 611, 72: 5th slice part

517, 613, 725: 6th slice part

519, 615, 727: 7th slice part

521, 617, 729: 8th slice part

523, 619: 9th slice part

525, 621: 10th slice part

251:Handheld cleaning tools

D ₁ : 1st direction

D ₁₁ : 1st direction one direction

D ₁₂ : The first direction and the other direction

D _C : Orthogonal direction

D _C1 : orthogonal direction one direction

D _C2 : the other direction of the orthogonal direction

D ₂ : 2nd direction

D ₂₁ : 2nd direction one direction

D ₂₂ : The other direction from the second direction

T: Thickness direction

T ₁ : Thickness direction one direction

T ₂ : The other direction of thickness direction

[Fig. 1] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 2] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 3] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 4] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 5] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 6] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 7] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 8] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 9] is a diagram for explaining the cleaning sheet 1 according to the first embodiment. [Fig. 10] is a diagram for explaining the cleaning sheet 1 according to the second embodiment. [Fig. 11] is a diagram for explaining the cleaning sheet 1 according to the second embodiment. [Fig. 12] is a diagram for explaining the cleaning sheet 1 according to the second embodiment. [Fig. 13] is a diagram for explaining the cleaning sheet 1 according to the third embodiment. [Fig. 14] is a diagram for explaining the cleaning sheet 1 according to the third embodiment. [Fig. 15] is a diagram for explaining the cleaning sheet 1 according to the third embodiment. [Fig. 16] is a diagram for explaining the cleaning sheet 1 according to the fourth embodiment. [Fig. 17] is a diagram for explaining the cleaning sheet 1 according to the fourth embodiment. [Fig. 18] is a diagram for explaining the cleaning sheet 1 according to the fourth embodiment. [Fig. 19] is a diagram for explaining the cleaning sheet 1 according to the fourth embodiment. [Fig. 20] is a diagram for explaining the cleaning sheet 1 according to the fifth embodiment. [Fig. 21] is a diagram for explaining the cleaning sheet 1 according to the fifth embodiment. [Fig. 22] is a diagram for explaining the cleaning sheet 1 according to the sixth embodiment. [Fig. 23] is a diagram for explaining the cleaning sheet 1 according to the sixth embodiment. [Fig. 24] is a diagram for explaining the cleaning sheet 1 according to the seventh embodiment. [Fig. 25] is a diagram for explaining the cleaning sheet 1 according to the seventh embodiment. [Fig. 26] is a diagram for explaining the hand-held cleaning tool 751 for cleaning the sheet 1 according to the seventh embodiment. [Fig. 27] is a diagram for explaining the cleaning sheet 1 according to the eighth embodiment. [Fig. 28] is a diagram for explaining the reciprocating structure. [Fig. 29] is a diagram for explaining the sheet portion.

1: Clean the flakes

13a: Basic flakes part 1

13b: Basic flakes part 2

17: Clean the thin section

21: 1st slice part

31:Second slice part

51: 3rd slice part

61: 4th slice part

93: 1st reciprocating structure

95: 2nd reciprocating structure

97: The third reciprocating structure

99:The 4th reciprocating structure

251:Handheld cleaning tools

D ₁ : 1st direction

D ₁₁ : 1st direction one direction

D ₁₂ : The first direction and the other direction

D ₂ : 2nd direction

D ₂₁ : 2nd direction one direction

D ₂₂ : The other direction from the second direction

D _C : Orthogonal direction

D _C1 : orthogonal direction one direction

D _C2 : the other direction of the orthogonal direction

T: Thickness direction

T ₁ : Thickness direction one direction

T ₂ : The other direction of thickness direction

Claims (17)

A cleaning sheet includes a base sheet portion and a cleaning sheet portion including a plurality of sheet portions, and has a first direction and a second direction constituting a circumferential direction of the first direction, characterized in that the plurality of sheet portions are oriented along the first direction. extending in the direction of 1 direction, and each of them has a fixed end portion and a free end portion, and the fixed end portion of each of the plurality of sheet portions is connected by a fixed end connecting portion extending in the direction of the 1st direction, At least a part of the plurality of sheet portions connected to the base sheet portion is configured such that the extension length of the free end portion in a direction parallel to the fixed end connection portion is longer than the extension length in a direction parallel to the fixed end connection portion. The length of the fixed end portion is longer, the free ends of at least a part of the plurality of sheet portions extend in the direction along the first direction while reciprocating in the second direction, and the free ends of the connecting portions include the plurality of free ends. A part of the connecting portion is connected to the free end portion of the sheet portion adjacent to the second direction among the plurality of sheet portions. The cleaning sheet according to claim 1, wherein the plurality of sheet portions are provided with integrated fixed end portions in which the fixed end portions are integrated, and the integrated fixed end portions are connected to the base sheet portion. The cleaning sheet of claim 2, wherein the base sheet part is divided into a base sheet part 1 and a base sheet part 2 by the integrated fixed end, and the base sheet part 1 and the base sheet The cleaning sheet portion angle formed by the second sheet portion is 150° or more and less than 360°. The cleaning sheet according to any one of claims 1 to 3, wherein the base sheet portion is further provided with a grip portion for a cleaning tool or a user. The cleaning sheet of claim 2, wherein the base sheet part is divided into a base sheet part 1 and a base sheet part 2 by the integrated fixed end, and the base sheet part 1 and the base sheet 2 The angle of the cleaning sheet portion formed by the cleaning sheet portion is 360°, and a grip portion for a cleaning tool or a user is formed between the first base sheet portion and the second base sheet portion. The cleaning sheet according to claim 1, wherein the cleaning sheet includes a plurality of cleaning sheet portions, and the plurality of cleaning sheet portions are connected in such a manner that the base sheet portions face each other. The cleaning sheet according to claim 6, wherein a holding portion for a cleaning tool or a user is provided between the base sheet portions. The cleaning sheet according to claim 7, wherein the holding portion has an insertion opening opening in the first direction and extends in a direction along the first direction. The cleaning sheet according to claim 8, wherein the insertion opening is provided with an extension portion in at least a portion of the plurality of cleaning sheet portions, and the extension portion extends away from the plurality of sheet portions in the first direction. The cleaning sheet according to any one of claims 6 to 9, wherein in each of the plurality of cleaning sheet portions, the plurality of sheet portions are provided with integrated fixed end portions in which the aforementioned fixed end portions are integrated, and the aforementioned integrated The fixed end portion is connected to the aforementioned base sheet portion. The cleaning sheet according to claim 1, wherein a holding portion for a cleaning tool or a user is provided between the base sheet portion and two adjacent sheet portions among the plurality of sheet portions. The cleaning sheet according to claim 1, wherein the cleaning sheet is configured to be in a non-expanded state. The cleaning sheet according to claim 1, wherein at least a part of the plurality of sheet portions is alternately folded in a direction along the first direction by a plurality of folding portions. The cleaning sheet according to claim 1, wherein at least a part of the plurality of sheet portions is provided with: a plurality of first top portions protruding toward one of the second directions, and each of the first top portions is provided with a first top surface; and a plurality of first top portions are provided toward the second direction. A plurality of second tops protrude from the other side, and each of these has a second top surface; the plurality of free end connecting portions are arranged on each of the first top surface and the second top surface. The cleaning sheet of Claim 14, wherein, in the sheet portion to which the first top surface and the second top surface belong, the total area of the plurality of first top surfaces is 50% or more and 100% or less of the area of the aforementioned sheet portion, Furthermore, the total area of the plurality of second top surfaces is 50% or more and 100% or less of the area of the sheet portion. A cleaning sheet includes a basic sheet part The cleaning sheet portion is divided into a plurality of sheet portions and has a first direction and a second direction constituting a circumferential direction of the first direction, wherein the plurality of sheet portions extend in a direction along the first direction, and the plurality of sheet portions extend in a direction along the first direction. Each of the plurality of sheet parts has a fixed end and a free end, and the fixed end of each of the plurality of sheet parts is connected to the base sheet part by a fixed end connecting part extending in the direction along the first direction. At least a part of the plurality of sheet portions is configured such that the extension length of the free end portion in a direction parallel to the fixed end connection portion is longer than the length of the fixed end portion in a direction parallel to the fixed end connection portion, and the aforementioned The free end portions of at least part of the plurality of sheet portions are connected to the free end portions of the sheet portions adjacent to the second direction among the plurality of sheet portions via free end connecting portions, and have a reciprocating structure. The cleaning sheet according to claim 16, wherein the two sheet portions connected by the free end connecting portion have mutually different reciprocating structures.

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