JP2023007846A - Pad manufacturing method, pad manufacturing device and pad - Google Patents

Abstract

To provide a pad manufacturing method, pad manufacturing device and pad suppressing generation of fiber dust while having water solubility, and being integrally releasable.SOLUTION: A pad 1 includes penetration holes 1ah formed thereon. The plurality of penetration holes 1ah are formed at a peripheral edge of the pad 1 to form a binding part. Forming the binding part strengthens bond between layers around the periphery of the pad 1 to suppress generation of fiber dust. Alternatively, when, for example, the pad 1 is bonded to a toilet bowl, with a release sheet 13 peeled off and the pad 1 after the use, is removed from the toilet bowl, the pad 1 can be held integrally. Further, since a portion to be bonded to the toilet bowl, out of the pad 1 has water solubility, the pad 1 after removed from the toilet bowl can be flushed down the toilet.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present disclosure relates to a manufacturing method, a manufacturing apparatus for a pad, and a pad made of a single-layer or multiple-layer pulp fiber sheet, attached to, for example, a toilet bowl and absorbing water such as flush water or shower water.

Conventionally, water-soluble (water-disintegratable) toilet sheets have been proposed. Since the toilet seat disintegrates in water, the drainpipe will not be clogged even if it is flushed down the toilet. Therefore, the user can flush the toilet seat after use (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2003-210359

A toilet sheet as described in Patent Literature 1 is manufactured by laminating fibers, and has a low fiber density and weak bonds between fibers in order to have water disintegrability. Therefore, there arises a problem that the fiber pieces are separated during use and dust is generated, or the sheet is separated when it is peeled off from the toilet bowl, and a part of the sheet remains adhered to the toilet bowl.

The present disclosure has been made in view of such circumstances, and provides a method for manufacturing a pad that is decomposable in water, suppresses the generation of fiber dust, and can be peeled off in one piece, a manufacturing apparatus for the pad, and a pad. intended to

A pad manufacturing method of the present disclosure is a method for manufacturing a water-decomposable pad that includes a pulp fiber sheet, and comprises a step of placing the original fabric of the pad on a backing plate; a step of lowering a press plate provided with a cutting blade and projections on the facing surface facing the receiving plate; a step of cutting the original fabric with the cutting blade and punching into the shape of the pad; and a step of piercing the peripheral portion of the pad with a portion to bind the peripheral portion of the pad.

According to the present disclosure, since the binding of the fibers in the peripheral portion of the pad is strengthened and the peripheral portion is bound, the generation of fiber dust is suppressed, and a pad that can be peeled off in one piece can be manufactured.

In the pad manufacturing method of the present disclosure, the protrusions are pins, perforating blades, or lead ruled blades.

According to the present disclosure, it can be implemented by simply adding pins, perforating blades, or lead ruled blades to existing manufacturing equipment, so it is possible to suppress the generation of fiber dust and peel off together without incurring high manufacturing costs. possible pads can be manufactured.

In the pad manufacturing method of the present disclosure, the press plate is positioned such that the protrusion penetrates the bottom layer of the pad and bites into the receiving plate by 0.1 mm to 1.5 mm, or 0.2 to 0.5 mm. lower.

According to the present disclosure, the pulp fibers can be entangled and bound down to the bottommost layer of the pulp fiber sheet.

A single layer or multiple layers of the pulp fiber sheet are provided, and at least one layer of the single layer or multiple layers of the pulp fiber sheet has water absorption properties.

According to the present disclosure, for example, when the pad is attached to the toilet bowl, leakage of small water or shower water to the outside can be prevented.

The multi-layered pulp fiber sheet includes a water-absorbing layer, a first surface layer formed above the water-absorbing layer, and a second surface layer formed below the water-absorbing layer. The layer and the peripheral edge of the second surface layer are stitched.

According to the present disclosure, for example, when the pad is attached to the toilet bowl and then removed, it is possible to hold the pad without touching the part that has absorbed small water or shower water.

The pad manufacturing method of the present disclosure extends in a predetermined direction, has a concave portion formed at one end, and has a protrusion having a shape corresponding to the concave portion formed at the other end, and the concave portion and the protrusion are arcuate. and the pad, in which the concave portion and the convex portion have the same radius of curvature, is die-cut from the original fabric.

According to the present disclosure, it is possible to manufacture a pad that can be fitted without gaps when a plurality of pads are used side by side. Also, the positions of the two pads in the circumferential direction can be adjusted by rotating the protrusion of one pad within the recess of the other pad.

In the pad manufacturing method of the present disclosure, the pad extending in a predetermined direction, protruding in a width direction intersecting the predetermined direction, and formed with a finger portion that can be gripped or put on with a finger is punched out from the original fabric. .

According to the present disclosure, for example, a pad can be manufactured in which all layers can be peeled off as one by holding the finger grips when the pad is attached to a toilet bowl and then peeled off.

A pad manufacturing apparatus of the present disclosure is an apparatus for manufacturing a water-decomposable pad, and includes a receiving plate on which the original fabric of the pad is placed, and a facing surface disposed above the receiving plate and facing the receiving plate. a cutting blade provided on the facing surface for cutting the raw fabric and punching out the pad; and a cutting blade provided on the facing surface for penetrating the peripheral edge portion of the pad to form a binding portion. and a protrusion that

ADVANTAGE OF THE INVENTION According to this disclosure, it is possible to manufacture a pad that suppresses the generation of fiber dust and can be peeled in one piece.

The pad of the present disclosure includes a water-disintegratable pulp fiber sheet, and a plurality of binding portions provided on the peripheral edge of the pulp fiber sheet and penetrating through the pulp fiber sheet.

According to the present disclosure, for example, in a pad that can be attached to a toilet bowl to absorb small water or shower water and flushed down the toilet, generation of fiber dust can be suppressed and the pad can be peeled off as a unit.

In the pad of the present disclosure, the binding portion includes a plurality of perforations penetrating the peripheral portion of the pad and fiber entanglement portions between the plurality of perforation holes.

According to the present disclosure, it can be implemented by simply adding pins, perforating blades, or lead ruled blades to existing manufacturing equipment, so the generation of fiber dust is suppressed, and a pad that can be peeled off in one piece can be manufactured at a high cost. Manufactured without applying

The pad of the present disclosure includes a single layer or multiple layers of the pulp fiber sheet, and at least one layer of the single layer or multiple layers of the pulp fiber sheet has water absorption properties.

According to the present disclosure, for example, when the pad is attached to the toilet bowl, leakage of small water or shower water to the outside can be prevented.

The pad of the present disclosure is a multi-layer pulp fiber sheet comprising a water-absorbing layer, a first surface layer formed above the water-absorbing layer, and a second surface layer formed below the water-absorbing layer, The binding portion penetrates the peripheral edge portions of the first surface layer, the water absorbing layer, and the second surface layer.

According to the present disclosure, for example, when the pad is attached to the toilet bowl and then removed, it is possible to hold the pad without touching the part that has absorbed small water or shower water.

The pad of the present disclosure extends in a predetermined direction, has a concave portion formed at one end, and has a protrusion having a shape corresponding to the concave portion formed at the other end, and the concave portion and the protrusion are arcuate. , the radii of curvature of said recesses and protrusions are the same.

According to the present disclosure, when a plurality of pads are used side by side, two pads can be fitted without a gap. Also, the positions of the two pads in the circumferential direction can be adjusted by rotating the protrusion of one pad within the recess of the other pad.

The pad of the present disclosure extends in a predetermined direction, protrudes in a width direction intersecting the predetermined direction, and forms a finger portion that can be gripped or put on with a finger.

According to the present disclosure, for example, when the pad is attached to the toilet bowl and then removed, all layers can be removed as a unit by the user gripping the finger grips.

Advantageous Effects of Invention According to the present disclosure, it is possible to manufacture a pad that is decomposable in water, suppresses the generation of fiber dust, and can be peeled off in one piece.

1 is a schematic perspective view of a pad according to Embodiment 1. FIG. FIG. 2 is a schematic cross-sectional view in which the II-II line shown in FIG. 1 is taken as a cutting line; It is the schematic perspective view which looked down at the press plate and cutting type|mold in a pad manufacturing apparatus from the downward direction. 4 is an enlarged perspective view of area IV shown in FIG. 3; FIG. FIG. 4 is a schematic cross-sectional view when a pad is die-cut from an original fabric; Fig. 2 is a schematic perspective view when the pad according to Embodiment 1 is attached to the toilet; 8 is a schematic perspective view of a pad according to Embodiment 2. FIG. FIG. 10 is a schematic perspective view when a plurality of pads according to Embodiment 2 are attached to a toilet; FIG. 11 is a schematic perspective view of a pad according to Embodiment 3; Fig. 11 is a schematic perspective view of the pad according to Embodiment 3 attached to the toilet; It is a schematic perspective view of a pad according to a modification.

(Embodiment 1)
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings showing a pad and a pad manufacturing apparatus according to a first embodiment. 1 is a schematic perspective view of the pad, and FIG. 2 is a schematic cross-sectional view taken along line II-II shown in FIG. In the following description, up, down, front, back, left, and right shown in the drawings are appropriately used.

As shown in FIG. 1, the pad 1 has an elongated circular shape extending in the left-right direction, and is curved as a whole so as to protrude forward and is formed in an arc shape. The length of the pad 1 (horizontal dimension in FIG. 1) is, for example, 50 to 200 mm, the width of the pad 1 (front and rear dimension in FIG. 1) is, for example, 20 to 60 mm, and the thickness of the pad 1 (vertical dimension in FIG. dimension) is, for example, 3 to 15 mm.

As shown in FIG. 2, the pad 1 comprises a water absorbing layer 10 and two surface layers 11, which are layers made of pulp fiber sheets. The water absorbing layer 10 contains 90 to 99 weight percent of natural pulp fibers as the main component. In addition, the water absorbing layer 10 contains, for example, 1 to 10% by weight of a biodegradable plastic material such as polylactic acid fiber and polylactic acid resin powder as a thermal adhesive (binder) as a secondary component, and has water absorption and water decomposability. It is biodegradable. Here, the term "water disintegratability" refers to the property of disintegrating in water. A biodegradable plastic material containing polyhydroxyalkanoic acid fiber or polyhydroxyalkane resin powder may be used instead of polylactic acid fiber or polylactic acid resin powder.
As the thermal adhesive (binder), an olefinic resin material or a cyclic olefinic resin material may be used within 5% by weight that does not impede the biodegradability of the pad 1 .

A surface layer 11 is provided on each of both surfaces of the water absorbing layer 10 . The surface layer 11 has water decomposability. The surface layer 11 is, for example, a non-woven fabric comprising natural pulp fibers and rayon fibers.

As shown in FIG. 2, when one surface of the water absorbing layer 10 faces upward and the other surface faces downward, an adhesive 12 is provided on the surface layer 11 arranged on the lower side. The adhesive 12 is arranged discontinuously on the surface layer 11, for example, in dots. Examples of the adhesive 12 include an acrylic adhesive or a polyvinyl acetate adhesive. As the adhesive 12, for example, a biodegradable pressure-sensitive adhesive mainly made of polylactic acid or a biodegradable pressure-sensitive adhesive obtained by blending a biodegradable substance with an elastomer derived from natural rubber may be used. . Note that the adhesive 12 may be provided continuously on the surface layer 11 .

The adhesive 12 is covered with a release sheet 13 . The release sheet 13 is made of paper, for example, and is surface-treated so that it can be separated from the adhesive 12 .

The pad 1 is manufactured as follows using a dry nonwoven fabric manufacturing method such as an airlaid method. Crushed natural pulp fibers, polylactic acid fibers and polylactic acid resin powder are mixed on the raw fabric of one surface layer 11, laminated and molded, and the raw fabric of the other surface layer 11 is overlaid on the upper surface. , to heat up. Next, the release sheet 13 coated with the adhesive 12 in advance is pressure-bonded to one of the surface layers 11 via the adhesive 12 to produce the raw sheet S. As shown in FIG. After that, the pad 1 is manufactured by cutting the original fabric S into a product shape.

From the viewpoint of water absorption, strength, thickness, etc. of the water absorbing layer 10 and the surface layer 11, the density of the water absorbing layer 10 is 0.03 in the state where the two surface layers 11, the adhesive 12 and the release sheet 13 are not provided. The pad 1 is manufactured to have a weight of ∼0.08 g/cm 3 , preferably 0.04-0.06 g/cm 3 . The density was measured according to JIS L1913:2010 General nonwoven fabric test methods 6.1 (thickness) and 6.2 (weight per unit area). If the density is too low, it will be difficult to maintain the shape of the product, and if it is too high, disintegration in water will be hindered. By setting the density within the above range, it is possible to achieve both retention of product shape and disintegration in water. In addition, the water absorbing layer has both sufficient water absorption and strength.

From the viewpoint of flowability in the drain pipe, the weight of the pad 1 after cutting (water absorption layer 10, surface layer 1
1 and the adhesive 12, in other words, the product weight excluding the release sheet 13 covering the adhesive 12 (at 20° C. and relative humidity of 65%) is 10 g or less. be. As will be described later, the weight of the pad 1 excluding the release sheet 13 is preferably 8 g or less, more preferably 6 g or less, and even more preferably 4 g or less in consideration of flowability.

As shown in FIGS. 1 and 2, the pad 1 is formed with a through hole 1ah. A plurality of perforation holes 1ah are formed at a constant interval in the circumferential direction of the pad 1 in the peripheral edge portion of the inner side of the pad 1 by a constant width from the outer edge of the pad in a plan view. It penetrates from the upper surface of the surface layer 11 disposed on the bottom to the lower surface of the release sheet 13 . The pulp fibers around the perforated holes 1ah are entangled, and the pad 1 is bound by the entanglement of the pulp fibers. A plurality of perforation holes 1ah formed in the edge portion 1e of the pad 1 and fiber entangled portions 1ae between the perforation holes 1ah, in which pulp fibers are entangled, constitute the binding portion 1a. For example, in FIG. 2, the hatched portions shown in the water absorbing layer 10 and the surface layer 11 represent the fiber entangled portions 1ae.
The outer side of the binding portion in the radial direction of the pad 1 is defined as an edge portion 1e.

The pad 1 is used, for example, attached to a toilet. Thereafter, when the pad 1 is to be discarded, the user lifts the entire layer of the pad 1, peels it off the toilet bowl, and flushes it down the toilet for disposal.
At this time, if the constant width length is lengthened and the width of the edge 1e in the radial direction of the pad 1 is increased, the amount of water contained at the moment the edge 1e hits the water when flushing the toilet increases, Since water can easily enter inside, the water disintegrability of the pad 1 is enhanced. However, when the pad 1 is peeled off from the toilet bowl, there is a greater risk that some, but not all, layers are lifted, leaving the other layer stuck to the toilet bowl. Considering the above, in order to ensure water disintegration, the constant width is preferably 2 mm to 8 mm, but when peeling off from the toilet bowl, considering the risk that a part of the width remains stuck to the toilet bowl, it is more preferable. 2 mm to 5 mm.

FIG. 3 is a schematic perspective view of the press plate and the cutting die in the pad manufacturing apparatus viewed from below. 4 is an enlarged perspective view of the area shown in FIG. 3; FIG. The illustrated pad manufacturing apparatus 2 is used when cutting the original sheet S and punching out the pads 1 . The pad manufacturing apparatus 2 includes a press plate 21, a plurality of cutting dies 22, and a receiving plate 23 (see FIG. 5). The receiving plate 23 is laid flat in the pad manufacturing apparatus 2 , and the press plate 21 is arranged above the receiving plate 23 . The press plate 21 is arranged so that one surface faces downward and the other surface faces upward, and a plurality of cutting dies 22 are provided on the lower plane. The material of the press plate 21 is, for example, wood.

The cutting die 22 has a cutting blade 221 , a pressing rubber 222 and a lead ruler blade 223 . The cutting blade 221 is a metal blade formed in a shape corresponding to the pad 1 and having an elongated circular shape extending in the front-rear direction and entirely curved so as to protrude to the right. It is arranged so as to protrude and constitutes the outermost periphery of the cutting die 22 . The lead ruled edge 223 has an elongated circular shape that extends in the front-rear direction and is entirely curved so as to protrude to the right, and is formed in a shape corresponding to the binding portion of the pad 1 . In addition, the lead ruled edge 223 has piercing sides 223a that form the piercing holes 1ah in the pad 1 and non-piercing sides 223b that only press the pad 1 and do not form the piercing holes 1ah in the pad 1 alternately at regular intervals. is formed in Further, the lead ruled edge 223 protrudes downward from the lower plane of the press plate 21 and is arranged inside the cutting edge 221 by the predetermined width in the radial direction of the cutting die 22 . In other words, the lead ruled edge 223 constitutes the inner periphery of the cutting die 22 . The protruding length of the penetrating side 223a from the press plate 21 is longer than the protruding length of the non-piercing side 223b from the press plate. Moreover, the cutting blade 221 and the penetration side 223a have substantially the same projection length from the press plate 21 .
A pin or a perforating blade may be provided instead of the lead ruled edge 223 .

The pressing rubber 222 is arranged so as to protrude downward from the lower plane of the press plate 21 and is fitted between the cutting blade 221 and the lead ruler blade 223 . The pressing rubber is provided along the entire circumference along the cutting edge 221 and the lead ruled edge 223 . The protrusion length of the pressing rubber 222 from the press plate 21 is substantially the same as or shorter than the protrusion lengths of the cutting blade 221 and the lead ruler blade 223 .
Note that the pressing rubber 222 may be provided only partially between the cutting blade 221 and the lead ruled blade 223 .

FIG. 5 is a schematic cross-sectional view when the pad is die-cut from the original fabric. The original fabric S is placed on the receiving plate 23 . The material of the receiving plate 23 is resin, for example. At the time of cutting, the press plate 21 is lowered, and the cutting blade 221 and the lead ruled blade 223 are pierced from the upper surface of the original fabric S and bit into the receiving plate 23 . The pressing rubber 222 presses and compresses the pad 1 in a direction crossing the surface of the receiving plate 23 so that the pad 1 does not shift during cutting, and also compresses the pressing rubber 222 itself.
The depth at which the cutting blade 221 and the lead ruler blade 223 bite into the receiving plate 23 is 0.1 mm to 1.5 mm, preferably 0.2 mm to 0.5 mm. If the cutting blade 221 and the lead ruled edge 223 bite into the receiving plate 23 too shallowly, the cutting blade 221 cannot reliably cut the material S, and the lead ruled edge 223 may not penetrate the pad 1 reliably. If it is too deep, the damage to the receiving plate 23 becomes large and the deterioration of the receiving plate 23 is accelerated. By setting the depth at which the cutting blade 221 and the lead ruler blade 223 bite into the receiving plate 23 to the above-described depth, the deterioration of the receiving plate 23 can be suppressed while cutting and penetrating are reliably performed.
The raw fabric S is cut by the press plate 21 and the cutting blade 221, and the pad 1 is die-cut. Also, the lead crease 223 increases the pulp density around the perforation hole 1ah. Therefore, the pulp fibers around the perforated holes 1ah are entangled, and the bonding between the surface layer 11 and the water absorbing layer 10 around the perforated holes 1ah is strengthened. Since the release sheet 13 is made of a material in which pulp fibers and the like are firmly consolidated, the perforation holes 1ah are formed, but the release sheet 13 and the pulp fibers of the surface layer 11 are not entangled.
By piercing the pad 1 with the lead ruled edge 223 and forming the perforation hole 1ah in the peripheral portion of the pad 1, the binding of the pulp fibers in the peripheral portion is strengthened and the peripheral portion of the pad 1 is bound. By binding the peripheral portion of the pad 1, the pad 1 is processed to suppress the emission of internal fiber pieces to the outside and generate dust, and to make the delamination difficult to occur.

6 is a schematic perspective view when the pad according to Embodiment 1 is attached to the toilet. FIG.
The toilet 3 includes a toilet bowl 31 , a toilet seat 32 and a toilet lid 33 . The toilet bowl 31 is a Western-style toilet bowl and has an opening 3a at the top. An upper surface (toilet upper edge) 3b bordering the opening 3a forms an annular shape in plan view and forms a flat surface. The front portion of the upper edge 3b of the toilet bowl is arcuate and strip-shaped in plan view. A pivot shaft 310 is provided at the rear portion of the toilet bowl 31, with the left-right direction being the axial length direction.

The toilet seat 32 is an O-shaped toilet seat. The toilet seat 32 has an annular plate shape. A hole 320 is provided in the central portion of the toilet seat 32 so as to correspond to the opening 3a. A rear portion of the toilet seat 32 is rotatably supported by the toilet bowl 31 via a pivot 310 . Therefore, the toilet seat 32 can swing around the pivot 310 by raising and lowering the front portion of the toilet seat 32 . When using the toilet 3 in a standing posture facing the toilet bowl 31, the toilet seat 32 is raised.

The toilet lid 33 has an egg-shaped plate shape that covers the toilet seat 32 . A rear portion of the toilet lid 33 is rotatably supported by the toilet bowl 31 via a pivot 310 . Therefore, when the front portion of the toilet lid 33 is lowered, the toilet seat 32 is covered by the downwardly swung toilet lid 33 . On the other hand, when the front portion of the toilet lid 33 is lifted, the toilet lid 33 swings upward and separates from the toilet seat 32 .

When sitting on the toilet seat 32 to use the toilet 3, the toilet seat 32 is lowered. When the toilet seat 32 is lowered, the upper surface of the toilet seat 32 is the seat surface, and the lower surface is the toilet seat back 32a. Back of toilet seat 3
2a has four elastic projections 321 projecting therefrom. Therefore, the seat back 32a of the lowered toilet seat 32 and the upper edge 3b of the toilet are arranged to face each other. At this time, the elastic projection 321
b to support the toilet seat 32 . Two elastic protrusions 321 are arranged on each of the left and right portions of the toilet seat back 32a, excluding the front and rear portions of the toilet seat back 32a.

The pad 1 is attached to, for example, the front part of the upper edge 3b of the toilet bowl with the adhesive 12 facing downward, with the release sheet 13 removed. The pad 1 is adhered to the upper edge 3b of the toilet bowl so that the curvature of the pad 1 corresponds to the curvature of the upper edge 3b of the toilet bowl. In FIG. 6, one pad 1 is attached to the upper edge 3b of the toilet bowl. The width of the pad 1 (dimension in the radial direction of the toilet) is substantially the same as the width of the upper edge 3b of the toilet (dimension in the radial direction of the toilet), and the pad 1 covers the entire upper edge 3b of the toilet in the width direction. It is preferable that the pad 1 is arranged in a place where it is not sandwiched between the elastic projection 321 and the upper edge 3b of the toilet bowl. The attachment position of the pad 1 is not limited to the upper edge 3b of the toilet bowl, and may be provided on the outer peripheral surface (side surface) of the toilet bowl 31, for example.

Since the elastic projection 321 is interposed between the toilet seat back 32a of the lowered toilet seat 32 and the upper edge 3b of the toilet bowl, a gap is generated. The thickness (vertical dimension) of the pad 1 is substantially the same as this gap or slightly thicker than this gap. Therefore, when the toilet seat 32 is lowered, the gap is closed by the pad 1 at the front portion of the upper edge 3b of the toilet bowl. In other words, the pad 1 is manufactured so as to have a thickness that can close the gap. By providing the pad 1 in the gap,
Leakage of small water or shower water from between the toilet bowl 31 and the toilet seat 32 can be prevented. Further, by providing the pad 1 on the outer peripheral surface of the toilet bowl 31, it is possible to prevent small water or shower water from running along the outer peripheral surface and adhering to the floor.

Also, when a man raises the toilet seat 32 and uses it in a standing position, dripping water can be prevented from adhering to the toilet bowl.

After the pad 1 absorbs small water or shower water, the user disposes of the pad 1 . At this time, the user peels off the pad 1 from the upper edge 3b of the toilet bowl and flushes it down the toilet.

(Embodiment 2)
The pad according to the second embodiment will be described below with respect to the differences from the first embodiment. Configurations other than those described later are common to those of the first embodiment. For this reason, the same reference numerals as in Embodiment 1 are given to the components that are common to Embodiment 1, and the description of those components is omitted.
FIG. 7 is a schematic perspective view of a pad according to Embodiment 2. FIG. As shown in FIG. 7, a concave portion 1b is formed at one end of the pad 1 according to the second embodiment. The concave portion 1b has an arc shape in a plan view and is recessed toward the other end portion of the pad 1. As shown in FIG. The edge portion of the other end of the pad 1 has a shape that follows the concave portion 1b, and has an arc shape that protrudes toward the opposite side of the one end in a plan view.
Hereinafter, the other end portion of the pad 1 is also referred to as a protrusion 1c. The radius of curvature of the protrusion 1c and the radius of curvature of the recess 1b are substantially the same.
The recessed portion 1b and the projecting portion 1c are formed during die-cutting by forming the cutting die 22 used for die-cutting the pad 1 from the raw sheet S into a shape corresponding to the recessed portion 1b and the projecting portion 1c.

FIG. 8 is a schematic perspective view when a plurality of pads according to Embodiment 2 are attached to a toilet. With the release sheet 13 removed, the pad 1 is attached to the front part of the upper rim 3b of the toilet bowl with the adhesive 12 facing downward, the recess 1b facing right, and the protrusion 1c facing left. The pad 1 is the upper edge 3b of the toilet bowl.
glued to. Before the bonding, the protrusion 1c of one pad 1 is attached to the recess 1b of the other pad 1.
can be rotated inside to adjust the position of the two pads 1 in the circumferential direction.

In FIG. 8, two pads 1 are attached to the toilet upper edge 3b. The two pads 1 are arranged in the circumferential direction of the opening 3a so that the curvature of the pad 1 corresponds to the curvature of the upper edge 3b of the toilet bowl. The protrusion 1c of one pad 1 is fitted into the recess 1b of the other pad 1. As shown in FIG. The recessed portion 1b and the projecting portion 1c that are fitted overlap each other in the scattering direction of small water or cleansing shower water, in other words, in the radial direction of the toilet bowl 31, and are connected without a gap. Three or more pads 1 may be attached to the upper edge 3b of the toilet bowl.

By using a plurality of pads 1, it is possible to arrange the pads 1 over the entire range of water splashing and prevent wide-range water splashing. Also, by fitting the projection 1c into the recess 1b, the projection 1 can be moved in the direction in which water scatters, in other words, in the radial direction of the opening 3a.
c and the recessed portion 1b are overlapped and connected without a gap, and water can be prevented from leaking from the connecting portion of the two adjacent pads 1. As shown in FIG.

In addition, since there is only one concave portion 1b and one protrusion 1c, positioning becomes easy when two pads 1 are connected. Further, by forming an arc shape in a plan view, it is possible to achieve smooth fitting between the concave portion 1b and the projecting portion 1c.

(Embodiment 3)
The points of the pad according to the third embodiment that are different from those of the first embodiment will be described below. Configurations other than those described later are common to those of the first embodiment. For this reason, the same reference numerals as in Embodiment 1 are given to the components that are common to Embodiment 1, and the description of those components is omitted.
9 is a schematic perspective view of a pad according to Embodiment 3. FIG. As shown in FIG. 9, finger grips 1d are formed at both ends of the pad 1 in the left-right direction so as to protrude forward. Each finger grip portion 1d is formed by integrally protruding all the layers constituting the pad 1. As shown in FIG.
The finger-holding portion 1d is formed at the time of die-cutting by forming a cutting die 22 used for die-cutting the pad 1 from the material S into a shape corresponding to the finger-holding portion 1d.

FIG. 10 is a schematic perspective view when the pad according to Embodiment 3 is attached to the toilet. As shown in FIG. 10, the finger grip protrudes forward from the upper edge 3b of the toilet bowl, that is, to the outside of the toilet bowl 31. As shown in FIG.
When the user removes the pad 1 soiled by water absorption from the toilet bowl 31, the user can peel off the adhesive material from the upper edge of the toilet bowl by holding and lifting one of the finger grips 1d.

When removing the pad 1 from the toilet bowl as described above, the user does not need to touch the toilet bowl 31 to grip the pad 1 . In addition, since all the layers of the pad 1 can be peeled off from the toilet bowl 31 as a whole by gripping the finger grips, it is possible to prevent a part of the pad 1 from remaining adhered to the toilet bowl 31. .

(Modification)
The recess 1b, the protrusion 1c, and the finger grip 1d may be formed on the pad 1 at the same time. FIG. 11 is a schematic perspective view of a pad 1 according to a modification. In this case, the finger grip portion 1d is formed at a location or in a shape that does not interfere with the fitting of the concave portions 1b and the protrusions 1c when the plurality of pads 1 are arranged.

In the above-described embodiment, the pad 1 is provided with the water absorbing layer 10, and the surface layer 11 is provided above and below the water absorbing layer 10 to form a three-layered structure, but the present invention is not limited to this. For example, a single-layer structure consisting only of the water-absorbing layer 10 or a two-layer structure having the surface layer 11 on either the upper side or the lower side of the water-absorbing layer 10 may be used. Further, a structure having four or more layers may be employed.

The pad according to each embodiment is not limited to a pad to be attached to a toilet for use. For example, an absorbent pad may be manufactured to be provided on a women's panty sheet. However, in this case, the pads are not arc-shaped, but are formed in, for example, a substantially rectangular or elliptical shape.

The disclosed embodiments 1, 2 and 3 should be considered as illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the meaning described above, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

Reference Signs List 1 pad 10 water absorbing layer 11 surface layer 12 adhesive 13 release sheet 1a binding portion 1ah perforation hole 1ae fiber entangled portion 1b concave portion 1c protrusion 1d finger grip portion 1e edge portion 2 pad manufacturing device 21 press plate 22 cutting die 221 cutting blade 222 Rubber 223 Lead ruled edge 23 Receiving plate 3 Toilet S Original fabric

Claims (14)

A method for producing a water-disintegratable pad comprising a pulp fiber sheet,
placing the original fabric of the pad on a receiving plate;
a step of lowering a press plate disposed above the receiving plate and provided with a cutting blade and projections on an opposing surface facing the receiving plate;
a step of cutting the original fabric with the cutting blade and punching into the shape of the pad;
a step of piercing the peripheral edge of the pad with the protrusion to bind the peripheral edge of the pad;
A method of manufacturing a pad comprising The pad manufacturing method according to claim 1, wherein the protrusion is a pin, a perforating blade, or a lead ruled blade. 3. According to claim 1 or 2, the press plate is lowered so that the protrusion penetrates the bottom layer of the pad and bites into the support plate by 0.1 mm to 1.5 mm, or 0.2 to 0.5 mm. A method of manufacturing the described pad. 4. The pad according to any one of claims 1 to 3, comprising a single layer or multiple layers of the pulp fiber sheet, wherein at least one layer of the single layer or multiple layers of the pulp fiber sheet has water absorbency. pad manufacturing method. The multi-layered pulp fiber sheet is
a water absorbing layer;
a first surface layer formed on the upper side of the water absorbing layer;
and a second surface layer formed below the water-absorbing layer, and binding peripheral edges of the first surface layer, the water-absorbing layer, and the second surface layer. How the pad is made. extending in a given direction,
A concave portion is formed at one end,
A protrusion having a shape corresponding to the recess is formed on the other end,
The concave portion and the protrusion are arcuate,
The pad in which the concave portion and the convex portion have the same radius of curvature,
The pad manufacturing method according to any one of claims 1 to 5, wherein the raw fabric is die-cut. extending in a given direction,
the pad projecting in the width direction intersecting the predetermined direction and formed with a fingering portion that can be gripped or put on with a finger;
die-cutting from the original roll;
A method for manufacturing a pad according to any one of claims 1 to 5. An apparatus for manufacturing a water-disintegratable pad,
a receiving plate on which the original fabric of the pad is placed;
a press plate disposed above the receiving plate and having a facing surface facing the receiving plate;
a cutting blade provided on the facing surface for cutting the raw fabric to punch out the pad;
a projecting portion provided on the facing surface, penetrating the peripheral portion of the pad and forming a binding portion;
A pad manufacturing apparatus comprising: a water-disintegratable pulp fiber sheet;
A pad comprising: a plurality of binding portions provided at the peripheral edge of the pulp fiber sheet and penetrating through the pulp fiber sheet. The binding part
a plurality of through holes penetrating the periphery of the pad;
a fiber entanglement portion between the plurality of perforations;
10. The pad of claim 9, comprising: comprising a single layer or multiple layers of the pulp fiber sheet,
11. The pad according to claim 9 or 10, wherein at least one layer of the single-layered or multiple-layered pulp fiber sheet has water absorbability. The multi-layered pulp fiber sheet is
a water absorbing layer;
a first surface layer formed on the upper side of the water absorbing layer;
a second surface layer formed below the water absorbing layer,
11. The pad according to claim 9 or 10, wherein the binding portion penetrates peripheral edge portions of the first surface layer, the water absorbing layer, and the second surface layer. extending in a given direction,
A concave portion is formed at one end,
A protrusion having a shape corresponding to the recess is formed on the other end,
The concave portion and the protrusion are arcuate,
13. The pad according to any one of claims 9 to 12, wherein the radius of curvature of said recess and protrusion is the same. extending in a given direction,
13. The pad according to any one of claims 9 to 12, further comprising a fingering portion that protrudes in a width direction that intersects with the predetermined direction and that can be gripped or hooked with a finger.

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