JP2018201576A - Cleaning sheet and cleaning tool equipped with the same - Google Patents

Abstract

To provide a cleaning sheet that is suitable for efficiently performing operation of wiping-off water.SOLUTION: The cleaning sheet 1 of the present invention used by being attached to the head 22 of a cleaning tool body 2 includes: a rear surface sheet 11 that is abutted on the head 22 and has liquid impermeability; a surface sheet 12 that is abutted on a cleaning target and has liquid permeability; and a sheet-like absorber 13 that is interposed between the rear surface sheet 11 and the surface sheet 12 and that is composed by containing pulverized pulp and water-absorbing polymer. The rear surface sheet 11 and the surface sheet 12 contain a junction 14 which is superimposed in the thickness direction and integrally joined with each other while surrounding the periphery of the absorber 13, with the surface sheet 12 made of nonwoven fabric sheet consisting essentially of polypropylene fiber.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a cleaning sheet that is used by being mounted on a mop-shaped cleaning tool body, and a cleaning tool including the cleaning sheet.

  Conventionally, when wiping off moisture adhering to a floor surface or the like, a mop for absorbing water has been used. The water-absorbing mop is configured such that, for example, a water-absorbing sheet material is attached to the tip of the handle of the mop main body (cleaning tool main body). The sheet material has, for example, a configuration in which synthetic resin fibers are planted in a raised shape on one side of the base fabric. At the time of cleaning, moisture is absorbed and held in the sheet material by pressing and rubbing the sheet material against the wet floor surface. However, in such water wiping and cleaning with a sheet material, the amount of moisture that can be absorbed (hereinafter referred to as “water absorption capacity” as appropriate) is relatively small, and the moisture content on the floor surface when the water absorption capacity of the sheet material exceeds the water absorption capacity. There is a problem in that the floor surface remains wet as it spreads instead of absorbing the water.

  On the other hand, the cleaning sheet comprised including the water absorption polymer as a cleaning article for water absorption is proposed (for example, refer to patent documents 1). For example, Patent Document 1 discloses a cleaning sheet in which an absorbent body (3) that absorbs moisture is interposed between a back sheet (5) and a top sheet (2). The back sheet has liquid impermeability. The top sheet has liquid permeability and is made of, for example, a nonwoven fabric. The absorber is composed of a water-absorbing polymer (6) and a cushion material (10). When using the cleaning sheet, the cleaning sheet is mounted so that the back sheet (5) contacts the lower surface of the head (22) in the cleaning tool body, and the top sheet contacts the floor (cleaning target). Wipe off any moisture on the floor. If such a cleaning sheet is used, the water-absorbing polymer retains moisture while swelling by absorbing moisture, so that it has a large water-absorbing capacity and can reduce moisture remaining on the floor surface. On the other hand, when moisture on the floor surface penetrates or is absorbed in the top sheet, the frictional resistance when the floor surface is wiped with the cleaning sheet becomes relatively large. If it does so, comparatively big power will be needed for water wiping off work. Therefore, the conventional cleaning sheet has room for improvement in terms of work efficiency of cleaning work performed using the cleaning sheet.

JP-A-2005-103222

  The present invention has been conceived under such circumstances, and its main object is to provide a cleaning sheet suitable for efficiently performing a water wiping operation.

  In order to solve the above problems, the present invention takes the following technical means.

  A cleaning sheet provided by the first aspect of the present invention is a cleaning sheet that is used by being mounted on a head of a cleaning tool body, and is a back sheet that is in contact with the head and has liquid impermeability, and cleaning. A surface sheet that is in contact with a target and has liquid permeability; and a sheet-like absorber that is interposed between the back sheet and the top sheet and includes pulverized pulp and a water-absorbing polymer. The back sheet and the top sheet include a joint part that surrounds the periphery of the absorber and overlaps in the thickness direction and is integrally joined to each other, and the top sheet is a non-woven sheet mainly composed of polypropylene fibers. It is characterized by that.

  In preferable embodiment, the said surface sheet is a nonwoven fabric sheet which consists only of a polypropylene fiber.

  In a preferred embodiment, the absorbent body includes a tissue sheet surrounding the ground pulp and the water-absorbing polymer.

  A cleaning tool provided by the second aspect of the present invention is a cleaning tool including the cleaning sheet according to the first aspect of the present invention and a cleaning tool body having a head to which the cleaning sheet is attached. The head is connected to the lower surface portion that is entirely covered by the cleaning sheet, the upper surface portion facing the opposite side to the lower surface portion, the lower surface portion and the upper surface portion, and a pair of facing the opposite sides. And the absorbent body in the cleaning sheet covers the entire lower surface and the entire pair of side surfaces when the cleaning sheet is mounted on the head.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows an example of the cleaning tool comprised provided with the cleaning sheet which concerns on this invention. It is a top view which shows an example of the cleaning sheet which concerns on this invention. It is a figure which represents typically the cross-sectional structure of the cleaning sheet shown in FIG. It is a figure for demonstrating the effect | action of the cleaning tool shown in FIG. 1, and is a perspective view which shows the state which isolate | separated the cleaning tool main body and the cleaning sheet. It is a side view for demonstrating an effect | action of the cleaning tool shown in FIG. It is a side view for demonstrating an effect | action of the cleaning tool shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 shows an example of a cleaning tool configured to include a cleaning sheet according to the present invention. The cleaning tool A1 of this embodiment includes a cleaning sheet 1 and a cleaning tool body 2 and is used for cleaning the floor surface.

  2 and 3 show the cleaning sheet 1 of the present embodiment. The cleaning sheet 1 includes a back sheet 11, a top sheet 12, and an absorber 13. The back sheet 11 is liquid-impermeable and is made of, for example, a synthetic resin film. When the specific example of the back surface sheet 11 is given, the material is polyethylene (film), the thickness is about 20 μm, and the planar size is a long rectangular shape of about 20 cm × 70 cm.

  The top sheet 12 is a non-woven sheet having liquid permeability and mainly composed of polypropylene fibers. Here, the polypropylene fiber is preferably used because of its poor liquid absorbability. In the present embodiment, the content ratio of the polypropylene fibers in the top sheet 12 is preferably higher, and the content ratio of the polypropylene fibers is, for example, 80% or more, preferably 90% or more, and more preferably 100%. . When the surface sheet 12 is composed of a plurality of types of fiber materials, it is composed of, for example, polypropylene fibers and polyethylene fibers. Although the specific manufacturing method of the surface sheet 12 is not particularly limited, a short fiber aggregate is formed by a wet method or a dry method, and the short fiber aggregate is formed into a nonwoven fabric sheet by a technique such as a thermal bond method or a spunlace method. Formed as. The planar size of the top sheet 12 is, for example, about 20 cm × 70 cm.

  The absorber 13 is configured in a sheet shape, and is interposed between the back sheet 11 and the top sheet 12. The absorber 13 absorbs liquid (mainly moisture), and includes pulverized pulp 131, a water-absorbing polymer 132, and a tissue sheet 133. The pulverized pulp 131 is, for example, a long fiber pulp called flat pulp, and is pulverized with a pulverizer into sheet-like or roll-like pulp.

  The water-absorbing polymer 132 is a so-called super absorbent polymer (SAP) and can quickly absorb water of several hundred times to about 1,000 times its own weight. Examples of such a water-absorbing polymer 132 include an acrylic acid polymer partial sodium salt crosslinked product, but the material is not particularly limited. The water-absorbing polymer 132 is in the form of particles, and the size thereof is about 300 μm. The water-absorbing polymer 132 is evenly dispersed in the pulverized pulp 131, and these (the pulverized pulp 131 and the water-absorbing polymer 132) are mixed and laminated.

  The tissue sheet 133 is a thin paper produced by pulverizing pulp fibers, and is excellent in water absorption. As shown in FIG. 3, the tissue sheet 133 surrounds the laminated sheet composed of the above pulverized pulp 131 and the water-absorbing polymer 132. Although a detailed illustration is omitted, the tissue sheet 133 is composed of, for example, two sheet pieces, and one sheet piece covers the entire lower surface of the laminated sheet made of the pulverized pulp 131 and the water-absorbing polymer 132 and the laminated sheet. The upper surface both ends of the laminated sheet are covered through both side surfaces along the longitudinal direction of the sheet, and the other sheet piece covers the entire upper surface of the laminated sheet.

  The planar size of the absorber 13 is one size smaller than the planar size of the back sheet 11 and the top sheet 12, and is, for example, about 16 cm × 66 cm. The back sheet 11 and the top sheet 12 include a joint 14 that surrounds the periphery of the absorber 13. The joining portion 14 is a portion where the back sheet 11 and the top sheet 12 overlap each other in the thickness direction and are joined together. Although the integration method in the junction part 14 is not specifically limited, For example, the junction part 14 is integrated by heat welding. The width dimension of the joining part 14 is about 2 cm, for example.

  In the present embodiment, a concave portion 134 that is recessed from the surface sheet 12 side is formed at an appropriate position of the absorber 13. The concave portion 134 is formed by, for example, pressing and heating the topsheet 12 and the absorber 13 from the topsheet 12 side. The concave portion 134 is for preventing the absorber 13 from being biased between the back sheet 11 and the top sheet 12. The absorber 13 is restrained from moving on both sides of the recess 134. Although the formation pattern of the recessed part 134 is not specifically limited, As shown with the broken line in FIG. 2, the recessed part 134 is formed in a grid | lattice form, for example in the thickness direction view of the cleaning sheet 1. FIG.

  In the cleaning sheet 1 having the above-described configuration, the weight and content ratio of the pulverized pulp 131 and the water-absorbing polymer 132 are appropriately selected according to the target water-absorbing capacity and the like. As an example of the weight ratio of the pulverized pulp 131 and the water absorbing polymer 132, the weight ratio of the pulverized pulp 131 is about 20 to 40% with respect to the total weight of the cleaning sheet 1, and the weight ratio of the water absorbing polymer 132 is 10 to 10. It is about 30%.

  The cleaning sheet 1 having the above configuration is used by being mounted on the cleaning tool main body 2. As shown in FIGS. 1 and 4, the cleaning tool body 2 includes a handle 21 and a head 22 connected to the tip of the handle 21. The head 22 is a part to which the cleaning sheet 1 is attached. The head 22 is connected to the tip of the handle 21 so as to be rotatable around a predetermined rotation axis Ox.

  As shown in FIGS. 1, 4, and 5, the head 22 is a plate having a substantially long rectangular shape. The head 22 has an upper surface portion 23, a lower surface portion 24, and a side surface 25. The upper surface portion 23 and the lower surface portion 24 face opposite to each other. The side surface 25 connects the upper surface portion 23 and the lower surface portion 24 and includes a pair of side surface portions 251. The pair of side surface portions 251 extend along the longitudinal direction of the head 22 and face opposite sides.

  In the present embodiment, the upper surface part 23 is provided with a clamping part 231. The sandwiching portion 231 is a portion that sandwiches the peripheral edge portion of the cleaning sheet 1. The clamping part 231 is configured, for example, such that a movable piece supported so as to be rotatable around a predetermined rotation axis is pressed against the upper surface part 23 by an elastic restoring force of an elastic member such as a spring. In the present embodiment, the sandwiching portions 231 are provided at four locations corresponding to the four corners of the head 22.

  As an example of the size of the head 22, the planar size is about 8 cm × 60 cm, and the thickness (height dimension of the side surface 25) is about 2 cm.

  Next, the operation of this embodiment will be described.

  Prior to use of the cleaning sheet 1, first, the cleaning sheet 1 is mounted on the cleaning tool body 2. Here, as shown in FIG. 4, the cleaning sheet 1 is placed on a flat surface such as a floor surface so that the back sheet 11 faces upward, and the head 22 is placed on the cleaning sheet 1. Next, as shown in FIG. 5, the end portion along the longitudinal direction of the cleaning sheet 1 is lifted and extended to the upper surface portion 23 so as to surround the side surface portion 251 of the head 22. At this time, the clamping part 231 is opened. The clamping part 231 is maintained in an open state by, for example, a lock mechanism.

  Next, as shown in FIG. 6, the end portion along the longitudinal direction of the cleaning sheet 1 is sandwiched by the sandwiching portion 231. Here, when the holding portion 231 is further opened from the state shown in FIG. 5, the lock mechanism is released (represented by a virtual line in FIG. 6), and the holding portion 231 is closed by the elastic restoring force of the elastic member. In this way, the cleaning sheet 1 is mounted on the head 22 of the cleaning tool body 2. Here, the absorbent body 13 in the cleaning sheet 1 covers the entire lower surface portion 24, the entire pair of side surface portions 251, and a part of the upper surface portion 23.

  The cleaning sheet 1 of the present embodiment includes a back sheet 11 having liquid impermeability, a top sheet 12 having liquid permeability, and an absorber 13 interposed between the back sheet 11 and the top sheet 12. Prepare. When the cleaning sheet 1 is mounted on the head 22 (cleaning tool main body 2), the back sheet 11 contacts the head 22. And the cleaning tool A1 with which the cleaning sheet 1 was mounted | worn is used in order to wipe off the water | moisture content adhering to cleaning objects, such as a floor surface, for example. At the time of cleaning, the surface sheet 12 facing outward is brought into contact with a wet floor surface (object to be cleaned), and moisture on the floor surface is wiped off while rubbing the floor surface.

  The top sheet 12 is a nonwoven fabric sheet mainly composed of polypropylene fibers. According to such a configuration, the frictional resistance when rubbing a wet floor surface or the like is small, and moisture adhering to the floor surface or the like can be wiped off smoothly. Therefore, it is possible to efficiently clean the wet floor surface. This is considered to be due to the property that the polypropylene fiber itself is excellent in liquid permeability but poor in liquid absorption. Unlike this embodiment, as a surface sheet material of a water-absorbent article having an absorbent body, a nonwoven fabric sheet mainly made of rayon fiber or cotton fiber is frequently used. In the case of a cleaning sheet using these nonwoven fabric sheets as a surface sheet material, a relatively large frictional resistance is generated when rubbing a wet floor surface or the like, and the working efficiency at the time of cleaning is poor.

  When the top sheet 12 is made only of polypropylene fibers (when the content ratio of polypropylene fibers is 100%), the frictional resistance against the floor surface or the like is further reduced, and the work efficiency at the time of cleaning the wet floor surface or the like is further improved. . Moreover, since the surface sheet 12 itself is poor in liquid absorbability, there is almost no moisture remaining when cleaning the floor surface, and it is possible to finish the floor surface in a dry state. In stores such as convenience stores and transportation facilities such as airports, the floor in the building is smooth, and if the floor gets wet in rainy weather, it is easy for the user to fall over and it is dangerous. In such a case, if floor cleaning is performed using the cleaning sheet 1 of the present embodiment, it is possible to quickly finish the floor surface in a dry state, which is convenient.

  The absorber 13 includes a tissue sheet 133 that surrounds the pulverized pulp 131 and the water-absorbing polymer 132. Since the tissue sheet is excellent in water absorption, moisture that has permeated through the top sheet 12 during floor cleaning is quickly transferred to the tissue sheet 133, and then quickly absorbed by the pulverized pulp 131 and the water absorbing polymer 132. Therefore, according to the present embodiment, moisture can be quickly absorbed by the absorber 13 (mainly the water-absorbing polymer 132) without causing moisture to remain as much as possible on the surface side (surface sheet 12) of the cleaning sheet 1. Further, the water absorbed by the water-absorbing polymer 132 is difficult to separate even when the cleaning sheet 1 is pressed against the floor surface, and it is possible to prevent the state in which moisture remains on the floor.

  When the cleaning sheet 1 is attached to the head 22 (cleaning tool body 2), the absorbent body 13 in the cleaning sheet 1 covers the entire lower surface portion 24 and the entire pair of side surface portions 251 in the head 22. According to such a configuration, for example, moisture adhering to a lower portion of the wall surface adjacent to the floor surface can be easily wiped by pressing the side surface portion 251 of the head 22 against the lower surface of the wall surface. Further, according to the configuration in which the absorber 13 is mounted so as to cover a part of the upper surface portion 23 of the head 22 as in the present embodiment, the cleaning sheet is made while the size of the head 22 is relatively small. It is possible to secure more water absorption capacity in 1. In addition, about the cleaning sheet 1, what is necessary is just to replace | exchange whenever a cleaning operation is complete | finished and to use a new thing at the time of subsequent cleaning.

  While specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. The specific configuration of each part of the cleaning sheet and the cleaning tool according to the present invention can be varied in design in various ways.

A1 Cleaning Tool 1 Cleaning Sheet 11 Back Sheet 12 Top Sheet 13 Absorber 131 Ground Pulp 132 Water Absorbing Polymer 133 Tissue Sheet 134 Recess 14 Joint 2 Cleaning Tool Main Body 21 Handle 22 Head 23 Top Surface 231 Nipping Portion 24 Bottom Surface 25 Side 251 Side Part

Claims (4)

A cleaning sheet to be used by attaching to the head of the cleaning tool body,
A back sheet that is in contact with the head and has liquid impermeability, a top sheet that is in contact with the object to be cleaned and has liquid permeability, and is interposed between the back sheet and the front sheet. A sheet-like absorber composed of a polymer, and
The back sheet and the top sheet include a joint portion that is joined together so as to overlap each other in the thickness direction while surrounding the periphery of the absorber,
The said surface sheet is a nonwoven fabric sheet which has a polypropylene fiber as a main component, The cleaning sheet characterized by the above-mentioned.   The cleaning sheet according to claim 1, wherein the top sheet is a non-woven sheet made of only polypropylene fibers.   The cleaning sheet according to claim 1 or 2, wherein the absorbent body includes a tissue sheet surrounding the pulverized pulp and the water-absorbing polymer. A cleaning tool comprising: the cleaning sheet according to any one of claims 1 to 3; and a cleaning tool body having a head to which the cleaning sheet is attached,
The head includes a lower surface part that is entirely covered by the cleaning sheet, an upper surface part that faces away from the lower surface part, and a pair of side surfaces that are opposite to each other, connecting the lower surface part and the upper surface part. And having
The cleaning tool, wherein when the cleaning sheet is attached to the head, the absorbent body in the cleaning sheet covers the whole of the lower surface part and the whole of the pair of side surface parts.

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