JP6072439B2 - Absorbent sheet for pet - Google Patents

Description

  The present invention relates to an absorbent sheet for pets.

  Conventionally, absorptive sheets for pets for absorbing urine and the like excreted by pets such as dogs and cats have become widespread (see, for example, Patent Document 1). Due to the diversification of pet breeding patterns in recent years, pet absorbent sheets have shifted from those that need to be replaced every day to those that can be used over a relatively long period of time, once in a few days. I am doing.

Such a pet absorbent sheet is used, for example, by being set in a pet toilet for treating pet excrement.
As a toilet for pets, for example, the toilet body is divided into upper and lower parts by liquid-permeable cocoons, and a granular excrement disposal material forming a toilet bed is laid on the upper layer part, and the above-described tray is drawn on the lower layer part. A two-layer type is known in which an absorbent sheet for pets is laid and used.
In such a pet toilet, the excrement disposal material laid in the upper layer allows the pet's excretion fluid to pass through quickly, drops the excreted fluid that has passed through the lower layer through the hole of the spider child, and the excreted fluid that has fallen. Is absorbed by the absorbent sheet for pets laid on the tray of the lower layer portion.
The tray is generally rectangular in plan view, and is pulled out from the toilet body when the pet absorbent sheet is set, and the pet absorbent sheet is inserted into the tray from one longitudinal end thereof. It is laid so as to cover the entire inner bottom surface.

  The pet absorbent sheet includes a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body interposed between the top sheet and the back sheet, and is formed in a substantially rectangular shape in plan view. Is known. Such an absorbent sheet for pets is generally packaged in a state of being folded with the top sheet as an inner side, and is unfolded and flattened during use.

JP 2010-51261 A

However, there are various sizes of pet toilets as described above, and tray sizes are not uniform. Therefore, when a large pet absorbent sheet is selected so that it can be used for various sizes of trays, if it is used for a tray smaller than the sheet, the edge of the pet absorbent sheet is shown in FIG. Since the part is lifted, it is caught when the tray is pushed back to the toilet body, and as a result, a gap is formed between the tray and the absorbent sheet for pets.
The gap between the tray and the absorbent sheet for pets causes leakage when the excretory fluid flows from the upper layer of the toilet for pets, and the absorbent sheet for pets cannot catch it and As a result, there was a problem of generating an odor. Such a problem is particularly remarkable in a pet absorbent sheet used for a relatively long period of time.

  An object of the present invention is to provide an absorbent sheet for pets that, when laid on a tray of a pet toilet, does not easily generate a gap between the trays regardless of the size of the tray.

In order to solve the above-mentioned problem, the invention described in claim 1
In the absorbent sheet for pets composed of a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body interposed between the top sheet and the back sheet,
Presents a substantially rectangular shape in plan view,
Bending portions that extend along one direction parallel to one side of the pet absorbent sheet and are easier to bend than other portions are preset from both ends in the other direction orthogonal to the one direction. One or more locations,
Reinforcing portions that cover the end surface of the absorber from the back sheet side to the top sheet side are provided at both ends in the other direction,
The reinforcing portion is provided as a separate body from the back sheet so as to cover the surface on the top sheet side, the end surface, and the surface on the back sheet side in the absorber .

Further, the invention according to claim 2 is the pet absorbent sheet according to claim 1,
The bent portion is further provided to extend in one or a plurality of positions set in advance from both ends in the one direction along the other direction.

Further, the invention according to claim 3 is the absorbent sheet for pets according to claim 1 or 2,
The bent portion is formed by an embossed portion in which the absorber is thinner and denser than other portions .

Further, the invention according to claim 4 is the pet absorbent sheet according to claim 3,
The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so as to be alternately arranged over the entire width direction of the embossed portion.
Moreover, the invention according to claim 5 is the pet absorbent sheet according to claim 3,
The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so that the high compression portion is alternately arranged on both sides in the width direction of the embossed portion. Features.
Moreover, the invention according to claim 6 is the pet absorbent sheet according to claim 3,
The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so that the high compression portion formed in a circular shape in plan view is arranged at predetermined intervals. And
In addition, the invention according to claim 7 is the pet absorbent sheet according to any one of claims 1 to 6 ,
The bent portion is characterized in that the absorber is missing entirely or partially.

Moreover, the invention according to claim 8 is the pet absorbent sheet according to any one of claims 1 to 7 ,
The reinforcing portion is located outside the bent portion along the other direction.

According to the present invention, the pet absorbent sheet has a substantially rectangular shape in plan view, extends along one direction parallel to one side of the pet absorbent sheet, and is easier to bend than other portions. A bent portion is provided at one or a plurality of positions set in advance from both ends in another direction orthogonal to the one direction.
For this reason, when the size of the pet toilet tray is smaller than the pet absorbent sheet, the pet absorbent sheet can be folded and set by the folding portion, so that a gap is generated between the sheet and the tray. It becomes difficult.
Therefore, when excretory fluid flows from the upper layer of the toilet for pets, it is difficult for the pet absorbent sheet to receive this, and it is difficult for the leakage to occur, and an odor due to the leakage occurs. Can be prevented.
Moreover, since the size of the pet absorbent sheet can be adjusted by the bent portion in this way, it is possible for the pet breeder to save the trouble of selecting the pet absorbent sheet having a size suitable for the tray.

It is a top view which shows an example of the absorbent sheet for pets concerning embodiment of this invention. It is sectional drawing in the II-II line of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. (A) is a top view which shows the embossing part of FIG. 1, (b) is sectional drawing in an AA line. It is a top view which shows the modification of an embossing part. It is a figure which shows a mode that the absorbent sheet for pets of FIG. 1 is inserted in the tray of a pet toilet. It is sectional drawing which shows an example of the absorptive sheet for pets concerning the modification 1. It is sectional drawing which shows an example of the absorptive sheet for pets concerning the modification 2. It is a top view which shows an example of the absorptive sheet for pets concerning the modification 3. It is a figure for demonstrating the problem of the conventional pet absorbent sheet.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

First, the configuration will be described.
For example, as shown in FIG. 1, the pet absorbent sheet 1 according to the present embodiment is formed in a substantially rectangular shape in plan view having a short side and a long side, and the moisture of excreta excreted by the pet from the surface is obtained. It can be absorbed into the sheet.
In the following description, the longitudinal direction along the long side of the pet absorbent sheet 1 is the X direction (one direction), and the short direction (width direction) orthogonal to the X direction is the Y direction (others). Direction). Moreover, let the thickness direction of the absorbent sheet 1 for pets be a Z direction.

  For example, as shown in FIGS. 1 and 2, the pet absorbent sheet 1 includes a liquid-permeable surface sheet 11 that quickly allows liquid such as urine to pass therethrough, and an impermeable liquid that is disposed on the back side of the surface sheet 11. The back sheet 12 of the nature, the absorber 13 interposed between the top sheet 11 and the back sheet 12, and the like are configured.

The top sheet 11 is provided in a size that covers the top surface of the absorber 13. The top sheet 11 is liquid permeable and is formed of a porous or non-porous nonwoven fabric, a porous plastic sheet, or the like. As the raw material fibers constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. In addition, as a method for producing the nonwoven fabric, a known method can be appropriately used. Can be manufactured.
When a large number of through holes are formed in the top sheet 11, liquid such as urine is absorbed more quickly, and the dry touch property is excellent.

The back sheet 12 covers the bottom surface of the absorbent body 13, further covers the end face of the absorbent body 13, and the reinforcing portion 14 that is folded back to the top sheet 11 side at both longitudinal side edges (both ends in other directions) of the top surface of the absorbent body 13. 14 is provided. For example, as shown in FIG. 3, the reinforcing portions 14 and 14 are arranged outside the embossed portions 15 and 15, which will be described later, in the Y direction, and the reinforcing portions 14 and 14 are embossed portions. 15 and 15 are preferably configured not to cover.
And the surface sheet 11 is adhere | attached on the upper surface of the reinforcement parts 14 and 14 folded in the surface sheet 11 side with a hot-melt-adhesive, a heat seal, an ultrasonic seal | sticker, etc.
The back sheet 12 is not particularly limited as long as it is a liquid-impermeable material. For example, a plastic film made of an olefin resin such as polyethylene or polypropylene, or a plastic film is provided on the surface of the nonwoven fabric. Examples thereof include a laminated nonwoven fabric and a laminated sheet obtained by laminating a nonwoven fabric on a plastic film. In addition, non-woven fabric using micro-denier fiber, enhanced leakage prevention by reducing fiber voids by applying heat or pressure, coating with superabsorbent resin or hydrophobic resin or water repellent Thus, a sheet which is liquid-impermeable without using a plastic film can also be used as the back sheet. Further, the back sheet 12 may have a liquid-absorbing outermost surface, such as a sheet in which a leak-proof sheet and a liquid-absorbing sheet are combined. Thereby, even if liquid such as urine oozes out from the joint between the absorbent sheets for pets 1, it can be hygienic because it can be absorbed by the liquid absorbing sheet in a small amount.

The absorber 13 absorbs water-like components such as urine, and can be formed of, for example, an aggregate of fibers. As this fiber assembly, a filament assembly obtained by opening, as necessary, synthetic fiber tows (fiber bundles) such as cellulose acetate as well as short fibers such as cotton-like pulp and synthetic fibers Can also be used. Moreover, a super absorbent polymer (SAP; Super Absorbent Polymer hereafter abbreviated as “SAP”) may be combined with the fiber assembly to constitute an absorbent body.
SAP includes carboxymethylcellulose, polyacrylic acid and its salts, acrylate polymer cross-linked product, starch-acrylic acid graft copolymer, starch-acrylonitrile graft copolymer hydrolyzate, polyoxyethylene cross-linked product, carboxy A cross-linked product of water-swellable polymer such as methyl cellulose cross-linked product, polyethylene oxide, polyacrylamide, or a copolymer of isobutylene and maleic acid is preferably used.
Furthermore, in order to give a deodorant function, you may put a deodorizer in the absorber 13. FIG. As the deodorant, for example, activated carbon, natural minerals (for example, bentonite, kaolinite, kanemite, etc.), synthetic inorganic substances (zeolite, amorphous silica, etc.) can be used.
The absorber 13 is formed by being wrapped with crepe paper (not shown).

In such a pet absorbent sheet 1, embossed portions 15 and 15 formed by compressing the absorbent body 13 in the Z direction (thickness direction) are formed as bent portions.
The embossed portions 15, 15 are provided so as to extend along the X direction (one direction) at predetermined positions from both longitudinal side edges (both ends in other directions) of the pet absorbent sheet 1. Yes.
Here, the preset position refers to a predetermined position that is preset according to the width of the tray of a commercially available pet toilet.

Since the embossed portions 15 and 15 are formed by compressing the absorbent body 13, the embossed portions 15 and 15 are thinner than the surroundings (other portions), and thus can be bent more easily than the other portions. It has become.
At this time, in the embossed portions 15 and 15, it is preferable that the absorber 13 before embossing is formed thinner than other portions by removing the absorber 13 entirely or partially. . By doing in this way, it will be able to bend more easily.
The embossing portions 15 and 15 are formed in parallel with the machine flow direction from the upper surface side by an embossing roll after forming an absorbent body 13 by wrapping an absorbent body made of fiber aggregate or SAP with crepe paper, for example. Is. The absorbent body 13 to which the embossed portions 15 and 15 are applied is covered with the back surface sheet 12 provided on the lower surface side so that the longitudinal both side edges are on the upper surface side, and then the surface sheet 11 is provided from the upper surface side.
Further, it is possible to apply the embossed portions 15 and 15 after the top sheet 11 is bonded to the absorber 13.

  Such embossed portions 15 and 15 are preferably formed with a width of 1 to 5 mm, for example. If the width of the embossed portions 15 and 15 is smaller than 1 mm, the folding position may be difficult to visually recognize or the topsheet 11 may be cut by the embossing pressure. This is because the possibility of obstruction increases.

Moreover, in the embossing part 15, as shown to Fig.4 (a) (b), it is preferable to provide alternately the high compression part 151 and the low compression part 152 from which the depth of a Z direction mutually differs, for example. By doing in this way, the shape of the embossing part 15 can be maintained easily after embossing.
In addition, as shown to Fig.4 (a), the high compression part 151 and the low compression part 152 are formed over the whole width | variety (length along the Y direction of the embossing part 15) of the embossing part 15 by turns. By doing so, the embossing part 15 can be conspicuous and it can make it easy to visually recognize a bending position.

Moreover, the shape of the high compression part 151 and the low compression part 152 in the embossing part 15 is not limited to what was mentioned above, For example, as shown to Fig.5 (a), the high compression part 151 is made into the embossing part 15 of FIG. The shape may be alternately arranged on both sides in the width direction, or as shown in FIG. 5B, the high compression portion 151 having a circular shape in plan view may be arranged at predetermined intervals along the X direction. good.
If it is the shape of Fig.5 (a), it can be made easier to bend, and if it is the shape of FIG.5 (b), it cannot be easy to bend, and it can be set as the thing excellent in design property.

  In addition, reinforcement parts 14 and 14 are arranged on both longitudinal side edges of the pet absorbent sheet 1 which is on the outer side in the Y direction than the embossed parts 15 and 15, and the reinforcement parts 14 and 14 attach the embossed parts 15 and 15. It is configured not to cover.

Next, the operation will be described.
The pet absorbent sheet 1 according to the present embodiment is used by being set, for example, in a pet toilet 100 for processing pet excreta.

Here, the pet toilet 100 will be described.
For example, as shown in FIG. 6, the pet toilet 100 includes a toilet main body 101 and a tray 102 that can be pulled out from the toilet main body 101.

The toilet body 101 is a box having a substantially rectangular parallelepiped shape with an open upper surface, and the inside thereof is partitioned vertically by a liquid-permeable bowl 101a.
A granular excrement disposal material (not shown) that forms a toilet bed is laid on the litter piece 101a of the toilet body 101.
As the excrement disposal material, for example, a material composed of a pulverized material derived from a plant and a molded product containing a synthetic resin is used. Since these molded articles have a low water absorption rate of preferably 1 to 10%, more preferably 1 to 5%, the urine or the like excreted by the pet is allowed to pass through quickly so The liquid is dropped into the lower layer portion through the liquid permeable hole 101b, and the excretory fluid is positively absorbed by the pet absorbent sheet 1 in the tray 102 arranged in the lower layer portion.

The tray 102 is formed in a tray shape that is substantially rectangular in plan view.
The tray 102 is disposed in the lower layer portion of the toilet body 101 in a state where the pet absorbent sheet 1 is laid, and receives the excretion liquid that has fallen through the liquid-permeable hole 101b of the scissors litter 101a.
When replacing the pet absorbent sheet 1, the tray 102 is pulled out along the longitudinal direction from a drawer port 101 c formed in the lower end surface of the toilet body 101.

When the pet absorbent sheet 1 is set on the tray 102 of the pet toilet 100, the pet absorbent sheet 1 is inserted from one end in the X direction (longitudinal direction) into the tray 102 drawn out from the toilet body 101. .
At this time, if the pet absorbent sheet 1 is wider than the tray 102, the pet absorbent sheet 1 is inserted by being bent by the embossed portions 15 and 15 which are bent portions.
For this reason, since the inner portion in the Y direction from the embossed portions 15, 15 of the pet absorbent sheet 1 is in close contact with the bottom surface of the tray 102, it is possible to prevent the both ends in the Y direction of the pet absorbent sheet 1 from being lifted. Thus, it is difficult for a gap to be generated between the pet absorbent sheet 1 and the tray 102.

Moreover, since the reinforcement part 14 and 14 are provided in the longitudinal both-sides edge of the pet absorbent sheet 1, when it folds and inserts, the longitudinal both sides edge of the pet absorbent sheet 1 is attached by insertion / extraction of the tray 102. When rubbing, it is possible to prevent deterioration such as tearing of the pet absorbent sheet 1.
In addition, since the reinforcing portions 14 and 14 are located outside the embossed portions 15 and 15 in the Y direction, when the pet absorbent sheet 1 is folded by the embossed portions 15 and 15, the embossed portions Since the absorber located in the Y direction inner part from 15 and 15 is not covered, absorption of excretory fluid is not inhibited.
Furthermore, since these reinforcement parts 14 and 14 have a leak-proof property, it can prevent that excretory liquid oozes out from a longitudinal both-sides edge.

As described above, according to the present embodiment, the liquid-permeable top sheet 11, the liquid-impervious back sheet 12, and the absorbent body 13 interposed between the top sheet 11 and the back sheet 12; In the pet absorbent sheet 1, the pet absorbent sheet 1 has a substantially rectangular shape in plan view, extends along one direction (X direction) parallel to one side of the pet absorbent sheet 1, and is bent more than other parts. An easy folding portion is provided at one position preset from both ends in the other direction (Y direction) orthogonal to the one direction (X direction), and the bending portion has a thickness of the absorber 13. The embossed portions 15 formed by compressing in the direction (Z direction) are thinner than other portions.
For this reason, when the size of the tray 102 of the pet toilet 100 is smaller than the pet absorbent sheet 1, the pet absorbent sheet 1 can be bent and set by the embossing sections 15, 15, so It is difficult to generate a gap between the tray 102 and the tray 102.
Therefore, when the excretory fluid flows from the upper layer portion of the pet toilet 100, it is difficult for the pet absorbent sheet 1 to receive this, and it is difficult to generate a leak, and an odor due to the leak occurs. Can be prevented.
Further, since the size of the pet absorbent sheet 1 can be adjusted by the embossing sections 15 and 15 as described above, it is possible for the pet breeder to save the trouble of selecting the pet absorbent sheet 1 having a size suitable for the tray 102. be able to.

Moreover, according to this embodiment, as for the embossing parts 15 and 15, the absorber 13 is lacking entirely or partially.
For this reason, it can be bent more easily.

Moreover, according to this embodiment, the reinforcement parts 14 and 14 which cover the end surface of the absorber 13 from the back surface sheet 12 side to the surface sheet 11 side are provided in the both ends of the other direction (Y direction). .
For this reason, it is possible to prevent the longitudinal both side edges (both ends in the Y direction) of the pet absorbent sheet 1 from being deteriorated when the tray 102 is inserted and removed.

Moreover, according to this embodiment, the reinforcement parts 14 and 14 are formed continuously with the back surface sheet 12.
For this reason, compared with the case where the reinforcement parts 14 and 14 are formed with another member, the score of a member does not increase and productivity is high.

Moreover, according to this embodiment, the reinforcement parts 14 and 14 are located in the outer side along the direction (Y direction) other than the embossing parts 15 and 15. FIG.
For this reason, when the pet absorbent sheet 1 is bent by the embossed portions 15, 15, the reinforcing portions 14, 14 do not cover the absorbent body located in the Y-direction inner side from the embossed portions 15, 15, and thus excreted Absorption of liquid is not hindered.

  In addition, in the said embodiment, although the structure which forms a bending part by the embossing parts 15 and 15 was demonstrated and demonstrated, a bending part will not be limited to this as long as a pet absorbent sheet can be bent. For example, a fold line may be used.

  Moreover, in the said embodiment, although illustrated about the absorbent sheet 1 for pets formed in the planar view substantially rectangular shape which has a short side and a long side, the shape of the absorbent sheet for pets is abbreviated planar view. Any rectangular shape may be used. For example, a substantially square shape may be used.

  Moreover, in the said embodiment, although the structure which the absorber 13 of the embossing parts 15 and 15 lacked entirely or partially demonstrated, the absorber 13 of the embossing parts 15 and 15 was demonstrated. Of course, it is good also as a structure which does not make it missing. That is, the embossed portions 15 and 15 can be made thinner than the surroundings (other portions) by easily compressing the absorber 13 by embossing without losing the absorber 13, and can be easily bent. Will be able to.

<Modification 1>
Next, the pet absorbent sheet 1A of Modification 1 will be described.
As shown in FIG. 7, for example, the pet absorbent sheet 1 </ b> A according to the first modification includes reinforcing portions 14 </ b> A and 14 </ b> A that are separate from the back sheet 12.
The reinforcing portions 14A and 14A are not particularly limited as long as they are liquid-impervious materials similar to the back sheet 12. However, higher strength materials, surface hydrophilic and inner surface hydrophobic materials, etc. Use is preferable because the reinforcing performance can be improved.
As described above, according to the pet absorbent sheet 1A of the first modification, the longitudinal both side edges (both ends in the Y direction) can be further reinforced.

<Modification 2>
Next, the pet absorbent sheet 1B of Modification 2 will be described.
For example, as shown in FIG. 8, the pet absorbent sheet 1 </ b> B according to the modified example 2 has a plurality of positions set in advance from both longitudinal side edges (both ends in the Y direction) of the pet absorbent sheet 1 </ b> B as bent portions. Embossed portions 15 and 15 extending along the X direction are provided.
By configuring in this way, the pet absorbent sheet 1B can cope with more various sizes of the tray 102, and the convenience can be further improved.

<Modification 3>
Next, the pet absorbent sheet 1C of Modification 3 will be described.
For example, as shown in FIG. 9, the pet absorbent sheet 1 </ b> C according to the modified example 3 has a Y-direction as a bent portion at a position set in advance from both longitudinal end edges (both ends in the X direction) of the pet absorbent sheet 1 </ b> C. Is further provided with an embossed portion 16 extending along the surface.
With such a configuration, both longitudinal end edges (both ends in the X direction) can be bent, so that various sizes of trays 102 can be accommodated, and convenience can be further improved.
In addition, although illustration is abbreviate | omitted, it is good also as providing the embossing process part 16 extended along such a Y direction in several positions preset from the longitudinal both ends (X direction both ends).
Moreover, it can also be set as the structure provided with a reinforcement part also in the X direction both ends of 1 C of absorbent sheets for pets.

1, 1A, 1B, 1C PET absorbent sheet 11 Top sheet 12 Back sheet 13 Absorber 14, 14A Reinforcement part 15 Embossed part (bending part)
151 High compression part 152 Low compression part 16 Embossed part (bending part)
100 Pet toilet 101 Toilet body 102 Tray

Claims (8)

In the absorbent sheet for pets composed of a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body interposed between the top sheet and the back sheet,
Presents a substantially rectangular shape in plan view,
Bending portions that extend along one direction parallel to one side of the pet absorbent sheet and are easier to bend than other portions are preset from both ends in the other direction orthogonal to the one direction. One or more locations,
Reinforcing portions that cover the end surface of the absorber from the back sheet side to the top sheet side are provided at both ends in the other direction,
The reinforcing part is provided as a separate body from the back sheet so as to cover the top sheet side surface, the end surface, and the back sheet side surface of the absorber. Sex sheet.   The said bending part is further provided so that it may extend along the said other direction in the 1 or several position preset from the both ends of the said one direction. Absorbent sheet for pets.   The absorbent sheet for pets according to claim 1 or 2, wherein the bent part is formed by an embossed part in which the absorbent body is thinner and denser than other parts. The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so as to be alternately arranged over the entire width direction of the embossed portion. Item 6. An absorbent sheet for pets according to item 3. The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so that the high compression portion is alternately arranged on both sides in the width direction of the embossed portion. The absorptive sheet for pets according to claim 3 characterized by things. The embossed portion includes a high compression portion and a low compression portion having different depths in the thickness direction so that the high compression portion formed in a circular shape in plan view is arranged at predetermined intervals. The pet absorbent sheet according to claim 3. The absorptive sheet for pets according to any one of claims 1 to 6 , wherein in the bent portion, the absorbent body is entirely or partially missing. The absorptive sheet for pets according to any one of claims 1 to 7 , wherein the reinforcing part is located outside the bent part along the other direction.

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