JP2008161150A - Pet seat - Google Patents

Abstract

To provide a pet sheet having a high deodorizing effect on excrement such as urine and having high safety, and a surface sheet used for a pet toilet.
A pet sheet (1) has a top sheet (2), a back sheet (3), and an absorber (4) interposed between both sheets (2, 3). The pet sheet 1 is given a deodorizing effect by the sawdust normal temperature water extract. It is preferable that a deodorizing effect is imparted to the topsheet 2 and / or the absorber 4 by the extract. The top sheet 13 of the pet toilet 10 is given a deodorizing effect by sawdust room temperature water extract.
[Selection] Figure 2

Description

  The present invention relates to a pet sheet for absorbing excreta such as urine excreted by pets such as dogs and cats. Moreover, this invention relates to the surface sheet used for toilets for pets, such as a dog and a cat.

  In order to absorb excrement such as urine excreted by pets when pets such as dogs and cats are raised in a house, excrement absorbing sheets are used. Such a sheet generally includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorber interposed between the two sheets. Conventionally, it has been proposed to give various functions by applying various chemicals to the absorbent sheet having such a structure.

  For example, Patent Document 1 describes that an absorbent contains an antibacterial deodorant powder made of a natural product. As the antibacterial deodorant powder, tea that has not been extracted with water-soluble components discharged in the tea-making process or powder of rice bran is used. Further, in Patent Document 2, an absorbent layer made of fluff-like fibers is interposed between a top sheet to which the tea leaf extract is attached and a back sheet joined to the top sheet at the peripheral edge, and the absorbent layer A pet urine absorbing device in which tea leaf powder is mixed in the surface layer is described. In this pet urine absorber, the catechin component is eluted in the region through which the urine in the surface sheet has passed and in the urine absorbed in the absorption layer, so that generation of ammonia odor is surely suppressed.

  Furthermore, in Patent Document 3, one or more kinds selected from the group consisting of extracts of rosemary, sunflower seeds, green coffee beans, grape skins, grape seeds, apples, carrot leaves and tea leaves are disclosed. A sanitary product characterized by containing a deodorant composition comprising an extract and an enzyme that oxidizes a phenolic compound and a water-absorbing polymer has been proposed.

JP 2004-141077 A JP 2006-246785 A JP 2001-527 A

  However, in the pet sheet using the wood itself as in Patent Document 1, the manufacturing process is complicated because the dry powder of wood is sprayed to a uniform thickness, and the pet sheet is maintained at a uniform thickness. There are problems such as it being difficult to provide the absorption layer and the thickness of the absorption layer being increased. On the other hand, since the tea leaf extract and catechin described in Patent Document 2 have high physiological activity, there is a problem that when applied to a surface sheet, the effect is easily lost due to discoloration or decomposition during storage. In Patent Document 3, the extracted extract is concentrated under reduced pressure and used as a dry powder by means of spray drying or freeze drying, and the plant extract may be altered during the concentration or drying process. There is sex.

  Accordingly, an object of the present invention is to provide a pet sheet and a pet toilet top sheet that can eliminate the disadvantages of the prior art described above.

  The present invention provides a pet sheet having a top sheet, a back sheet, and an absorber interposed between both sheets, and having a deodorizing effect imparted by sawdust normal temperature water extract.

  Moreover, this invention provides the surface sheet of the toilet for pets to which the deodorizing effect is provided with the sawdust normal temperature water extract.

  The pet sheet of the present invention and the pet toilet using the surface sheet of the present invention have a high deodorizing effect on excrement such as urine, and are used on the part directly touching the sole of the pet, for example, the front side of the surface sheet But it is safe. The pet toilet using the pet sheet of the present invention and the top sheet of the present invention does not increase the thickness of the absorbent layer as in the pet sheet using wood itself, and the manufacturing process is not complicated. . In addition, since the pet toilet of the present invention and the pet toilet using the top sheet of the present invention are given a deodorizing effect by the sawdust normal temperature water extract, the pet sheet or the topsheet can be erased even during storage. It is preferable because the odor component is present in a stable state and the deodorant component is hardly decomposed or discolored. Furthermore, the sawdust room temperature water extract used in the present invention has a low content of oil-soluble terpenes and the like, and the wood-specific fragrance itself is low. The toilet is considered easy to use for pets. Furthermore, since the sawdust room temperature water extract used in the present invention is directly extracted with room temperature water, it has not been subjected to concentration or drying processes such as vacuum concentration, spray drying or freeze drying. There is little change in the deodorant component.

  The present invention will be described below based on preferred embodiments with reference to the drawings. As shown in FIGS. 1 to 4, the pet sheet 1 of the present embodiment has a rectangular shape in plan view. The pet sheet 1 has a top sheet 2, a back sheet 3, and an absorber 4 interposed between both sheets 2 and 3. The top sheet 2 constitutes a liquid receiving surface for urine or the like excreted from a pet, and is composed of a liquid permeable sheet. The back surface sheet 3 constitutes a surface opposite to the liquid receiving surface, and is composed of a water-repellent or liquid-impermeable sheet.

  Both the front sheet 2 and the back sheet 3 have the same shape and dimensions, and form the outer shape of the pet sheet 1. The absorber 4 has a size slightly smaller than that of the top sheet 2 and the back sheet 3. The top sheet 2 and the back sheet 3 extend outward from the peripheral edge of the absorbent body 4, and their extending portions are joined to each other. As the joining means, for example, a hot melt adhesive, heat seal, or ultrasonic seal is used. Thus, the entire upper surface of the absorber 4 is covered with the top sheet 2. The entire lower surface of the absorber 4 is covered with the back sheet 3.

  The top sheet 2 and the absorber 4 and the absorber 4 and the back sheet 3 are joined with a hot-melt adhesive. As a result, shape retention as a whole pet sheet is ensured. Regarding the bonding between the topsheet 2 and the absorbent body 4, it is preferable to apply the hot melt adhesive in a discontinuous pattern such as a spiral, lattice, stripe, or dotted pattern. Thereby, the movement of the liquid from the surface sheet 2 to the absorber 4 is ensured.

  As these members constituting the pet sheet 1, the same materials as those conventionally used for this type of product can be used. For example, a liquid-permeable sheet material can be used as the top sheet. A specific extract is applied to the sheet material as described later. Examples of the material for the sheet material include various thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, and polyamide resins. The sheet material made of these materials can be in the form of, for example, a fiber sheet, a film, or a laminate thereof. When the sheet material is composed of a water-repellent material, a hydrophilization treatment with various hydrophilizing agents may be performed.

  When the sheet material is a fiber sheet, either a woven fabric or a non-woven fabric can be used as the fiber sheet. Considering that the pet sheet 1 is disposable, it is preferable to use a non-woven fabric as the fiber sheet from the economical viewpoint. When using a nonwoven fabric as a fiber sheet, as this nonwoven fabric, a spun bond nonwoven fabric, an air through nonwoven fabric, a spunlace nonwoven fabric, a needle punch nonwoven fabric, a chemical bond nonwoven fabric, etc. can be used, for example. Of these nonwoven fabrics, it is preferable to use a spunbond nonwoven fabric that is a nonwoven fabric having high strength and good liquid permeability.

  Since the said fiber sheet has a space | gap between fibers, it is possible to permeate | transmit a liquid through this space | gap. However, the fiber sheet may be subjected to a hole opening treatment to form a large number of holes regularly or irregularly, thereby further ensuring the permeation of the liquid. In the case where the sheet material is a film, it is necessary to form a large number of apertures regularly or irregularly by subjecting the film to aperture treatment in order to ensure the permeation of the liquid. The openings formed in these fiber sheets and films may be planar or funnel-shaped three-dimensional. In particular, if the aperture is three-dimensional, it is advantageous because the liquid absorbed by the absorber 4 does not easily return, that is, wetback hardly occurs.

Regardless of whether it is a fiber sheet or a film, the sheet material constituting the surface sheet 2 has a basis weight of 10 to 50 g / m ² , particularly 15 to 25 g / m ^2. It is preferable from the viewpoint of securing sufficient strength of the sheet 2.

As the back sheet 3 in the pet sheet 1, a liquid-impermeable film made of a thermoplastic resin can be used. Moreover, you may laminate a nonwoven fabric etc. on this film. Alternatively, a water-repellent sheet material such as a spunbond-meltblown-spunbond nonwoven fabric may be used as the back surface sheet 3. The back sheet 3 has a basis weight of 10 to 50 g / m ² , particularly 15 to 30 g / m ² , from the viewpoint of securing sufficient strength of the back sheet 3 and securing sufficient liquid blocking properties. preferable.

As the absorbent body 4 in the pet sheet 1, a liquid absorbent material such as fluff pulp, superabsorbent polymer, mixed fiber, tissue paper or the like can be used. In particular, it is preferable to use a mixed fiber of fluff pulp and superabsorbent polymer from the viewpoint of ensuring a sufficient absorption capacity. When using this mixed product, it is preferable to cover the periphery with an absorbent paper such as tissue paper from the viewpoint of securing the shape retention of the mixed product and preventing the superabsorbent polymer from falling off. In the present embodiment, as shown in FIGS. 3 and 4, the absorbent body 4 is mainly composed of an aggregate of liquid absorbent fibers such as fluff pulp, and includes an absorbent core 41 including particles of a superabsorbent polymer. The upper cover sheet 42 covers the upper surface of the absorbent core 41, and the lower cover sheet 43 covers the lower surface of the absorbent core 41. The upper cover sheet 42 and the lower cover sheet 43 are made of tissue paper. The absorbent core 41 preferably has a basis weight of 30 to 500 g / m ² , particularly 50 to 300 g / m ² from the viewpoint of ensuring sufficient liquid absorbency.

  The absorbent core 41 has a rectangular plan view shape. The top cover sheet 42 has a rectangular plan view shape, and the length and width thereof are substantially the same as the length and width of the absorbent core 41. The lower surface covering sheet 43 has a rectangular plan view shape, and its length is substantially the same as the length of the absorbent core 41, but its width is longer than the width of the absorbent core 41. Yes.

  The absorbent core 41 has upper end surfaces in the longitudinal direction of the absorbent core 41 substantially coincided with both end portions in the longitudinal direction of the lower surface cover sheet 43 on the upper surface of the lower surface covering sheet 43, and The lower surface covering sheet 43 is disposed so as to be retracted inward in the width direction from both ends in the width direction. And the lower surface covering sheet 43 extended in the width direction from each of the width direction both ends of the absorbent core 41 is folded back to the upper surface side of the laminate of the upper surface covering sheet 42 and the absorbent core 41, and Bonded to the top surface.

  The dimensions of the pet sheet 1 (that is, the dimensions of the top sheet 2 and the back sheet 3) are appropriately set according to the size of the target pet. The length is, for example, 38 to 48 cm, and the width is, for example, 30 to 40 cm.

  Thus, the pet sheet 1 is characterized in that a deodorizing effect is imparted by the sawdust normal temperature water extract. It is known that wood has a deodorizing effect, an antiseptic effect, an aroma effect, etc., and the inventors of the present invention are particularly interested in an extract obtained by immersing sawdust in water at a specific temperature to extract an active ingredient. It has been found that it is particularly effective in deodorizing excreta excreted from pets as compared with water extract. A suitable method for obtaining the extract is as follows.

  First, the sawdust used as a raw material has a large surface area such as a raw material of wood or a chip that is ground, and the size is not particularly limited as long as it is suitable for extraction. As a kind of wood, both coniferous trees and hardwoods can be used. As the conifer, pine, cedar and urchin wood are suitable. For example, red pine, Ezo pine, Todo pine, Douglas fir (Yonematsu), hemlock (rice candy), spruce, cedar, cocoon and the like can be used. As the broad-leaf resin, for example, beech, eucalyptus, oak, poplar, alder and the like can be used. These woods can be used alone or in combination of two or more. In particular, from the viewpoint of containing a large amount of substances having a deodorizing effect, it is preferable to use one or more of pine, cedar and urchin wood.

  These sawdust are immersed in room temperature water for extraction. The normal temperature as used herein refers to 10 to 30 ° C. The sawdust extract can be obtained by using hot water or alcohol. However, as a result of the study by the present inventors, it has been found that when extracted with room temperature water, the deodorizing effect is remarkably high. Suitable extraction conditions are as follows. The water of 2000 to 5000 parts by weight, particularly 3000 to 4000 parts by weight of normal temperature water is mixed with 100 parts by weight of sawdust and left as it is. The active ingredient is extracted for 2-10 hours, especially 3-5 hours with occasional stirring. Next, solid-liquid separation is performed to obtain a target extract.

The extract is applied to at least one member constituting the pet sheet 1 and imparts a deodorizing effect. From the viewpoint of further enhancing the deodorizing effect, it is preferable to impart the deodorizing effect to the top sheet 2 and / or the absorber 4. In the case of imparting a deodorizing effect to the top sheet 2, it may be applied to one or both sides of the top sheet 2. In particular, the top sheet 2 remains on the top sheet by applying a large amount of extract from the back side. It is possible to effectively deodorize the urine smell. As a method for imparting a deodorizing effect to the surface sheet 2, the liquid permeable sheet constituting the surface sheet 2 is sprayed with the extract or the liquid permeable sheet constituting the surface sheet 2 is extracted. After dipping in the liquid, the excess extract may be removed and dried. When the deodorizing effect is imparted to the absorbent body 4, for example, the extract liquid may be sprayed and dried on the absorbent core 41 that is a part of the absorbent body 4. The amount of spray depends on the concentration of the active ingredient contained in the extract. When extracted under the above conditions, it is preferable to spray 10 to 100 g, particularly ²⁰ to 70 g, on the surface sheet 1 m ² . It is preferable to spray 10 to 100 g, particularly 20 to 70 g, with respect to 100 g of the absorber. In order to apply more extract liquid to the liquid receiving surface of the liquid permeable sheet than the back surface, for example, the hydrophilizing agent may be sprayed only from the liquid receiving surface side of the liquid permeable sheet.

  Since the deodorizing action by the extract is derived from natural products, there is an advantage that it is safe for pets and has a mild odor. Moreover, since the extraction medium is water, the extracted active ingredient is water-soluble. Therefore, even if this extract is applied to, for example, the top sheet 2, the liquid permeability is not hindered. On the other hand, if essential oil is used as a deodorant and this is applied to the top sheet, the top sheet may be given water repellency and liquid permeability may be impaired.

  In particular, the active ingredient adhering to the surface sheet 2 by being applied to the top sheet 2 even if the extract is not applied to the absorbent body 4 is due to its water solubility. A part of it dissolves in urine and moves to the absorber 4 together with urine and diffuses in the absorber 4. The active ingredient transferred to the absorber 4 exhibits a deodorizing action in the absorber 4 and deodorizes malodors generated from urine absorbed in the absorber 4. In particular, since the active ingredient is present in the same part as the part where the absorbed urine is present in the absorber 4 (in other words, there is no active ingredient in the part not wetted with urine), Deodorization can be efficiently performed with the minimum required amount.

  Next, another embodiment of the present invention will be described with reference to FIGS. Regarding the points that are not particularly described with respect to the present embodiment, the description of the above-described embodiment is applied as appropriate.

  This embodiment relates to a toilet for pets such as dogs and cats. The pet toilet 10 includes a tray-shaped tray 11, a flat urine absorption mat 12, a liquid-permeable surface sheet 13, and a frame-shaped pressing tool 14. And the deodorizing effect is provided to this surface sheet 13 by the said extract. In order to give the surface sheet 13 a deodorizing effect, for example, a liquid-permeable sheet constituting the surface sheet 13 may be immersed in the above extract solution, and then the excess extract solution may be removed and dried. As a liquid-permeable sheet which comprises the surface sheet 13, the thing similar to what was used in embodiment mentioned above can be used.

  The saucer 11 has a rectangular shape in plan view, and has a shallow tray shape in which all the peripheral portions 15 of the four sides stand upright. The area surrounded by the peripheral edge 15 is also rectangular, and this area serves as the accommodating part 16 of the urine absorbent mat 12. The height of the peripheral edge portion 15 with respect to the bottom surface of the housing portion 16 is substantially the same as the thickness of the urine absorbing mat 12. The urine absorption mat 12 is plate-shaped and one sheet is used. The urine absorption mat 12 is preferably a flat surface at least facing the top sheet 13. As a result, the urine absorption mat 12 and the top sheet 13 are in close contact with each other, and a space that causes urine residue is not formed between them. As a result, generation of malodor caused by urine is suppressed.

  It is preferable that the urine absorption mat 12 is formed by molding a forming raw material containing vegetable fiber, pulp, or clay mineral material into a plate shape. Details of the material constituting the urine absorption mat 12 are described in, for example, Japanese Patent Application Laid-Open No. 2003-153639 related to the previous application of the present applicant. The thickness of the urine absorbing mat 12 is preferably 3 mm or more, more preferably 5 to 50 mm, and still more preferably 10 to 20 mm. As a result, the amount of urine absorbed is increased and the strength is increased as compared with the sheet-like absorbent mat. Furthermore, unlike the granular type urine absorbing material, dust is hardly generated during handling and disposal becomes easy.

  The presser 14 is made of a frame, and has a shape that matches the shape of the upstanding peripheral edge 15 in the tray 11 in plan view. Further, the vertical cross section has a shape that matches the vertical cross section of the peripheral edge 15 of the tray 11. The retainer 14 is formed with wall-like ribs 17 that hang from the top surface and face the inner surface of the peripheral edge 15 of the tray 11. The ribs 17 are formed continuously around the entire circumference of the presser 14 having a frame shape. In the state in which the toilet 10 is assembled, as shown in FIG. 6, the top sheet 13 is sandwiched and fixed between the rib 17 and the inner surface of the peripheral edge portion 15 of the tray 11. As described above, since the rib 17 and the peripheral edge portion 15 are continuously formed, the topsheet 13 is continuously fixed in a planar shape. As a result, the generation of wrinkles on the topsheet 13 due to fixation is effectively prevented, and the occurrence of urine pools on the topsheet 13 due to the generation of wrinkles is prevented.

  According to the present embodiment, a part of the active ingredient adhering to the surface sheet 13 is dissolved in urine and transferred to the urine absorption mat 12 together with urine, and diffuses in the urine absorption mat 12. The active ingredient transferred to the urine absorption mat 12 exhibits a deodorizing action in the urine absorption mat 12 and deodorizes malodors generated from the urine absorbed in the urine absorption mat 12.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in each of the embodiments described above, the sawdust extract is applied to the constituent members of the pet seat 1 and the pet toilet 10 in advance. Instead, the extract is used as it is or Other components are added to the extract to make a pet deodorant, and the deodorant may be applied to the pet sheet or pet toilet before or in use by spraying or dipping. .

  In addition, in the pet sheet 1 of the above embodiment, when an extract is applied to the top sheet 2, another deodorant may be included in the absorbent body 4. Similarly, in the toilet 10 for pets, another deodorant may be contained in the urine absorption mat 12. However, the pet sheet and pet toilet of the present invention have a sufficient deodorizing effect even if no other deodorant is present in the absorbent body 4 or the urine absorbent mat 12, respectively.

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

[Example 1]
Todomatsu 15 g (made in the form of scraps) was placed in 500 g of ion-exchanged water and allowed to stand at 20 ° C. for 3 hours with occasional stirring, followed by solid-liquid separation by filtration to obtain an extract. Separately, a pet sheet 1 having the form shown in FIGS. 1 to 4 was manufactured. As the surface sheet 2, a spunbond nonwoven fabric made of polypropylene having a basis weight of 20 g / m ² was used. This nonwoven fabric was immersed in the above extract for 30 minutes. Thereafter, the excess extract was removed and dried as it was to impart a deodorizing effect to the nonwoven fabric.

As the back sheet 3, a polyethylene film having a basis weight of 30 g / m ² was used. As the absorbent body 4, an absorbent core 41 (basis weight 150 g / m ² ) made of a mixed fiber of fluff pulp and superabsorbent polymer particles is used, and a top cover sheet having a basis weight of 15 g / m ² , respectively. What was covered with 42 and the lower surface coating sheet 43 was used.

[Example 2]
In Example 1, the deodorizer was applied to the absorbent body 4 instead of the surface sheet. The applied amount was 50 parts by weight of the deodorant with respect to 100 parts by weight of the absorber 4 so as to be the same amount as in Example 1. Except this, a pet sheet was produced by the same procedure as in Example 1.

Example 3
In Example 1, in addition to applying the deodorant to the top sheet 2, it was also applied to the absorber 4. The amount of the deodorant applied to the absorber was the same as in Example 2. Except this, a pet sheet was produced by the same procedure as in Example 1.

[Comparative Example 1]
In Example 1, the extract obtained in the same manner as in Example 1 was used except that the extraction condition was boiled at 80 to 90 ° C. Using this extract, a pet sheet was produced by the same procedure as in Example 1.

[Comparative Example 2]
In Example 1, as a deodorant, what dissolved 0.3 g of catechin powder ((+)-Catechin hydrate SIGMA company) in 30 mL of ethanol was used. The deodorant was sprayed on the top sheet at 75 g / m ² , and then ethanol was dried. Except this, a pet sheet was produced by the same procedure as in Example 1.

Example 4
The pet toilet 10 shown in FIGS. 5 to 7 was manufactured. As the top sheet 13, one produced by the same procedure as the top sheet 2 of Example 1 was used.

[Evaluation]
About the pet sheet | seat obtained by the Example and the comparative example, the state of the surface color and the deodorizing effect were evaluated with the following method. The results are shown in Table 1 below.

[State of surface color]
The state of the color of the surface sheet was visually observed to determine the presence or absence of coloring.

[Deodorization effect]
Use a pipette to drop 1 mL of dog urine onto a pet sheet, leave it at room temperature (20 ° C), and perform sensory evaluation from a position 10 cm away from the sheet by 3 panelists 30 minutes after addition of dog urine. It was. The intensity of odor was determined according to the following criteria according to the six-step odor intensity display method.
0: No odor 1: No smell 2: Smell but less animal unpleasant odor 3: Can detect animal unpleasant odor 4: Strong animal unpleasant odor 5: Very strong animal unpleasant odor There is a smell

  As is apparent from the results shown in Table 1, it can be seen that the pet sheet of the example (product of the present invention) is superior in the deodorizing effect of urine compared to the comparative example.

It is a perspective view showing one embodiment of a pet sheet. It is a disassembled perspective view which isolate | separates and shows the component about the sheet | seat for pets shown in FIG. It is the III-III sectional view taken on the line in FIG. It is the IV-IV sectional view taken on the line in FIG. It is a perspective view showing one embodiment of a pet toilet. It is the VI-VI sectional view taken on the line in FIG. FIG. 7 is an exploded view of FIG. 6.

Explanation of symbols

1 Pet sheet 2 Top sheet 3 Back sheet 4 Absorber

Claims (4)

  A pet sheet having a top sheet, a back sheet, and an absorber interposed between both sheets, and having a deodorizing effect imparted by sawdust room temperature water extract.   The pet sheet according to claim 1, wherein a deodorizing effect is imparted to the surface sheet by the sawdust room temperature water extract.   The pet sheet according to claim 1, wherein a deodorizing effect is imparted to the absorber by the sawdust room temperature water extract.   A top sheet for pet toilets that has been given a deodorizing effect with sawdust room temperature water extract.

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