JP2010119324A - Animal excrement-treating sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an animal excrement-treating sheet capable of sufficiently holding the excrement of an animal, having a thin thickness, and also hardly slipping, when arranged on a floor. <P>SOLUTION: This animal excrement-treating sheet 1 is formed by laminating a film layer 3 mad e of a hot-melt resin on one of the surfaces of a pulp fiber layer 2 containing a pulp fiber. The pulp fiber layer 2 has a unit weight of 25 to 100 g/m<SP>2</SP>, a saturation amount of water absorption of not less than 240 g/m<SP>2</SP>, and a thickness of 0.2 to 1 mm. The film layer 3 has a coefficient of static friction measured in accordance with the JIS K 7125 of not less than 0.45. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an excrement disposal sheet for treating animal excrement.

  Disposable animal excrement disposal sheets for preventing the floor from being soiled by urine from animals such as indoor dogs and cats are known. For example, Patent Document 1 discloses an animal excrement disposal sheet having a water absorbent sheet and a waterproof sheet layer on the lower surface of the water absorbent sheet layer.

Japanese Utility Model Publication No. 02-127155

  However, the water-absorbing sheet of Patent Document 1 contains a water-absorbing polymer for absorbing animal urine, so that the animal excrement disposal sheet becomes relatively thick. Moreover, although the excrement disposal sheet | seat for animals of patent document 1 has a waterproof sheet layer in the lower surface, when it arrange | positions on a floor | bed etc., if an appropriate waterproof sheet layer is not arrange | positioned, an animal excrement disposal sheet Becomes slippery. Patent Document 1 does not disclose anything about such a slip problem.

  Accordingly, an object of the present invention is to provide an animal excrement disposal sheet having a small thickness while sufficiently retaining animal excrement. Moreover, the objective of this invention is providing the excrement disposal sheet | seat for animals which is hard to slip when arrange | positioning on a floor etc.

The present invention is an animal excrement treatment sheet in which a film layer made of a heat-fusible resin is laminated on one surface of a pulp fiber layer containing pulp fibers, and the pulp fiber layer has a basis weight thereof. Is 25 to 100 g / m ² , the saturated water absorption is 240 g / m ² or more, the thickness is 0.2 mm to 1 mm, and the film layer has a coefficient of static friction measured according to JIS K 7125 of 0. The object is achieved by providing an animal excrement disposal sheet of 45 or more.

  According to the animal excrement disposal sheet of the present invention, it is possible to sufficiently retain animal excrement and reduce the thickness. Moreover, according to the animal excrement disposal sheet of the present invention, it is difficult to slip when placed on a floor or the like.

  Hereinafter, a preferred embodiment of the animal excrement disposal sheet of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the animal excrement disposal sheet 1 of the present embodiment is formed by laminating a film layer 3 made of a heat-fusible resin on one surface of a pulp fiber layer 2 containing pulp fibers. ing.

  Examples of the pulp fiber layer 2 include wet nonwoven fabrics, dry pulp nonwoven fabrics, nonwoven fabrics such as spunlace nonwoven fabrics, and pulp sheets (paper). From the viewpoint of eliminating synthetic fibers other than binder fibers and processing into nonwoven fabric shapes, A wet nonwoven fabric is preferred. As the wet nonwoven fabric containing pulp fibers, for example, pulp fibers are made into a sheet and used in a sheet form, and may be composed of 100% by mass of pulp fibers. The pulp fibers may be bonded to each other by hydrogen bonding or the like. Examples of the pulp fiber include mechanical pulp, semi-chemical pulp, and chemical pulp. These pulp fibers may be used individually by 1 type, and may use 2 or more types together.

  When the pulp fiber layer 2 contains an adhesive such as binder fiber, the content of the adhesive such as binder fiber is preferably 20% by mass or less, more preferably 5% by mass or less. Such a pulp fiber layer 2 has high flexibility, good softness, and good touch.

The fiber diameter of the pulp fiber is preferably 1.8 to 5.5 dtex, more preferably 2.2 to 3.3 dtex, from the viewpoints of flexibility and soft touch. Here, dtex (decitex) is a unit of fiber thickness expressed in grams per 10,000 m (specified in JIS L0101).
Moreover, although it does not restrict | limit especially about the fiber length of a pulp fiber, 5-40 mm is preferable from a viewpoint of the productivity of a wet nonwoven fabric or a dry pulp nonwoven fabric.

The pulp fiber layer 2 has a basis weight of 25 to 100 g / m ² , and preferably 40 to 50 g / m ² from the viewpoint of the balance between the thinness of the pulp fiber layer and the amount of absorption.
The basis weight is obtained by cutting the pulp fiber layer 2 into a size of 100 mm × 100 mm, measuring its weight, and converting it to a weight of 1 m ² . When the pulp fiber layer 2 is taken out from the animal excrement disposal sheet 1, if the film layer 3 is fusion-fixed, the fusion-fixed portion is melted and removed by hot air from a solvent or a dryer. The pulp fiber layer 2 is taken out and the basis weight is measured. The above measurement is performed 5 times , and the average value is defined as the basis weight.

The pulp fiber layer 2 has a saturated water absorption of 240 g / m ² or more, and is preferably 300 g / m ² or more from the viewpoint of absorption.
The saturated water absorption of the pulp fiber layer 2 is measured by the following method.

<Measurement of saturated water absorption>
In the animal excrement disposal sheet 1 in an environment of 20 ° C. and 65% RT, the pulp fiber layer 2 and the film layer 3 are cut out to a size of 200 mm × 200 mm and stored for 2 hours. The weight of the animal excrement disposal sheet 1 after storage is measured to determine the weight of the animal excrement disposal sheet 1 when dried (weight when dried). Next, after dipping the animal excrement disposal sheet 1 after drying in a large excess of physiological saline for 10 minutes so that the whole is immersed, one tip of the soaked animal excrement disposal sheet 1 is clipped. After sandwiching and suspending in a vertical state for 10 minutes, the weight is measured (measurement after absorption). The saturated water absorption is calculated from the following equation.
Saturated water absorption = weight after absorption−weight at drying The above measurement is performed 5 times, and the average value is defined as the saturated water absorption.

The pulp fiber layer 2 has a thickness of 0.2 mm to 1 mm, and preferably 0.2 mm to 0.4 mm from the viewpoint of the balance between the thinness of the pulp fiber layer and the amount of absorption.
The thickness is measured under a load of 0.18 gf / cm ² by cutting the pulp fiber layer 2 into a size of 100 mm × 100 mm. When the film layer 3 of the animal excrement disposal sheet 1 is fused and fixed, the pulp fiber layer 2 is taken out and the thickness is measured in the same manner as in the measurement of the basis weight. The above measurement is performed 5 times , and the average value is defined as the thickness.

The pulp fiber layer 2 preferably has a 15 mm-wide Krem water absorption height of 30 mm or more in 10 seconds, measured according to JIS P 8141, and absorbs and absorbs animal excrement, particularly dog urine. From the viewpoint of quickly diffusing urine and securing the amount of absorption using the entire pulp fiber layer 2, the thickness is preferably 25 mm or more in 10 seconds. Although there is no restriction | limiting in particular in the upper limit of Klem water absorption height, Since the excrement like a urine will reach the edge of the pulp fiber layer 2 if it is 50 mm or less in 10 seconds, the edge may be broken. It is preferable because it becomes possible to prevent excrement from leaking out from the edge even when it is done.
The water absorption height of the pulp fiber layer 2 is measured by the following method.

<Measurement of Klem water absorption height>
When the pulp fiber layer 2 is taken out from the animal excrement disposal sheet 1, if the film layer 3 is fusion-fixed, the fusion-fixed portion is melted and removed by hot air from a solvent or a dryer. Then, the pulp fiber layer 2 is taken out. The extracted pulp fiber layer 2 is used as a sample, and the Klem water absorption height is measured according to the test method of JIS P 8141. Specifically, the taken-out pulp fiber layer 2 is cut into a width of 15 mm and a length of 200 mm. When cutting, a cutting method that may crush the sample, such as a push cutter, is not preferable because it has a high possibility of affecting the results. Therefore, when cutting, the cut surface of the sample is cut so as not to be crushed by using a knife, a cutter, a razor or the like. Next, the cut sample is set in a jig specified in JIS P 8141, and the saline water height is measured after 10 seconds using physiological saline as a test solution. In order to facilitate the determination of the suction height, the test solution may be appropriately colored with a dye such as Blue No. 1 or methylene blue. The above measurement is performed 5 times, and the average value is defined as the Klem water absorption height.

The film layer 3 is formed of a heat-fusible resin, and has a static friction coefficient measured according to JIS K 7125 of 0.45 or more. From the viewpoint of slip resistance, the static friction coefficient is preferably 0. .40 or more. Although there is no restriction | limiting in particular in the upper limit of a static friction coefficient, it is easy to remove the sheet | seat 1 of this invention by the static friction force with the film layer 3 to-be-grounded surface becoming weak after absorbing excrement that it is 0.70 or less. This is preferable.
The static friction coefficient of the film layer 3 is measured by the following method.

<Measurement of coefficient of static friction>
When the film layer 3 is fixed to the surface of the pulp fiber layer 2, the measurement is performed in the state of the animal excrement disposal sheet 1. That is, the static friction coefficient of the film layer 3 is determined in accordance with the test method of JIS K 7125 using the non-laminated side where the pulp fiber layer 2 is not laminated among the both surfaces of the film layer 3 of the animal excrement disposal sheet 1 as a sample. taking measurement. Specifically, measurement is performed in an environment of 20 ° C. and 65% RH. The film layer 3 (when the film layer 3 is fixed on the surface of the pulp fiber layer 2) is cut into a size of length × width = 140 mm × 60 mm and used as a measurement sample. . Next, a 40 mm × 40 mm × 40 mm thick stainless steel plate (40 mm × 40 mm front and back surfaces, four 40 mm × 40 mm side surfaces, from the bottom of the center in the width direction of one of the four surfaces) (Stainless steel jig provided with a handle at 8 mm) so that the measurement surface of the measurement sample (the non-laminate surface on the side where the pulp fiber layer 2 of the film layer 3 is not laminated) becomes the front. Apply and fix to obtain a sliding piece for measurement. Cover the entire back surface of the stainless steel jig with the measurement sample to prevent looseness and wrinkles from appearing on the measurement sample, make a hole for passing the handle, and stick the front of the stainless steel jig with tape. And paste to obtain a slip piece.

  Next, a table (200 mm long × 100 mm wide flooring material) to be slid by friction coefficient measurement is formed. Specifically, the film layer 3 (animal excrement treatment sheet 1 when the film layer 3 is fixed on the surface of the pulp fiber layer 2) is placed on a table that is slid by friction coefficient measurement. Cut out to a size of 150 mm x 80 mm, so that the measurement surface (the non-laminated surface on the side where the pulp fiber layer 2 of the film layer 3 is not laminated) is the front, so that wrinkles do not occur on the flooring material, A slide measuring table is formed by sticking the surroundings with tape. The sliding measurement table is horizontally arranged, and the sliding piece is arranged so that the measurement surface of the sliding measurement table and the back surface (measurement surface) of the sliding piece are in contact with each other. A load was applied on the sliding piece so that the total load of the sliding piece and the weight was 500 g, and the stainless steel jig was placed under the conditions of a tensile speed of 300 mm / min, a tensile distance of 100 mm, and a chart speed of 300 mm / min. Pull horizontally to measure the coefficient of friction. The coefficient of static friction is determined from the obtained chart according to a conventional method. The above measurement is performed 5 times, and the average value is defined as the coefficient of static friction. The 500 g load assumes one leg of a 2 kg puppy. The 40 mm × 40 mm × 40 mm stainless steel plate assumes the size of one leg of a 2 kg puppy.

  Examples of the heat-fusible resin constituting the film layer 3 having a static friction coefficient of 0.45 or more include polypropylene (PP), ethylene-methyl methacrylate copolymer (EMMA), polyethylene-polypropylene copolymer, ionomer, and ethylene vinyl. An acetate (EVA) etc. are mentioned, and an ethylene-methylmethacrylate copolymer (EMMA) is preferable from the viewpoint of a high static friction coefficient and a film flexibility. When the pulp fiber layer 2 is a wet nonwoven fabric or a dry pulp nonwoven fabric containing pulp fibers that does not contain or contain an adhesive such as a binder fiber but the content thereof is 20% by mass or less, fusion integration is performed. From the viewpoint of conciseness, it is preferable to melt an ethylene-methyl methacrylate copolymer (EMMA) and laminate it on one side of a wet nonwoven fabric or a dry pulp nonwoven fabric containing the pulp fiber.

The film layer 3 has a basis weight of preferably 10 to 100 g / m ² from the viewpoint of leakage prevention, and preferably 10 to 25 g / m ² from the viewpoint of the texture of the sheet.
The basis weight is obtained by cutting the film layer 3 into a size of 100 mm × 100 mm, measuring its weight, and converting it to a weight of 1 m ² . When the film layer 3 is taken out from the animal excrement disposal sheet 1, when the film layer 3 is fused and fixed to the pulp fiber layer 2, the basis weight of the animal excrement disposal sheet 1 is first calculated. Next, the fusion-fixed part is removed by melting with hot air from a solvent or a dryer, the pulp fiber layer 2 is taken out, and the basis weight of the pulp fiber layer 2 is measured. The basis weight of the film layer 3 is a value obtained by subtracting the basis weight of the pulp fiber layer 2 from the basis weight of the animal excrement disposal sheet 1. The above measurement is performed 5 times and the average value is defined as the basis weight.

  The animal excrement disposal sheet 1 preferably has a vertical length of 320 mm or more and a horizontal length of 320 mm or more from the viewpoint of sufficiently securing a single urine for dogs, particularly puppies and indoor dogs among animals. . The product form of the animal excrement disposal sheet 1 may be formed by stacking 1 to 100 animal excrement disposal sheets 1 and packing them, or as shown in FIG. 2, having a width of 320 mm to 600 mm. The strip-shaped animal excrement disposal sheet 1 may be wound into a roll shape to form a roll. When the animal excrement disposal sheet 1 is in a roll form, a perforation is provided at a constant interval of 100 mm to 1000 mm in a direction perpendicular to the flow direction of the roll, and is used separately from the perforation when used. It may be.

  In the animal excrement disposal sheet 1 of the present embodiment, a pattern, a pattern, or embossing may be applied to the pulp fiber layer or the film layer. Since the sheet 1 is thin, it is easy to recognize the front and back of the sheet by applying a design or the like. Both the pulp fiber layer and the film layer may be provided with a pattern, pattern or emboss. In this case, it is preferable to change the pattern or pattern between the two layers or make the emboss pattern different. The design or the like is formed by using various printing methods such as gravure coating and means such as heat sealing processing, ultrasonic sealing processing, and high frequency sealing processing.

  In the present embodiment, the pulp fiber layer or the heat-fusible resin may contain a deodorizing effect component and an antibacterial agent. Since the animal excrement disposal sheet 1 of the present invention is thin and has a high absorption capacity, the odor is likely to be scattered outside the sheet, so that the occurrence of such a problem is suppressed by arranging these components. sell. As the deodorant and antibacterial agent, natural substances such as activated carbon, zeolite, amorphous silica, activated alumina, sepiolite, bentonite, cancrinite, phytoncide, and the like can be used.

In the animal excrement disposal sheet 1 of the present embodiment, as shown in FIG. 3, the peripheral portions of the four sides of the animal excrement disposal sheet 1, that is, both ends in the longitudinal direction of the animal excrement disposal sheet 1. Of the side edges 1c and 1d in the longitudinal direction 1a and 1b, it is preferable that anti-slip means be provided along the edges of the two sides because the sheet can be stably disposed. In particular, even if the sheet becomes slippery after urination by being provided at the opposite two sides, that is, the edges of both side edges 1a and 1b or both side edges 1c and 1d, the sheet position can be fixed on the two sides. Therefore, even if the animal tampers with the sheet, the sheet is easily deformed in the sheet center region C, and the other two sides are easily deformed to prevent tearing. Since the deformation can be suppressed on the two sides, the sheet can be prevented from being turned over.
When the sheet 1 is in the form of a roll, a non-linear state is easily formed at the edge of the sheet by cutting along the perforations cut into individual sheets. This can also serve as a slip prevention means. Sheets In order to further secure such an effect, there are means such as providing perforations in a zigzag, or making the perception of the perforation longer to facilitate the formation of a non-linear shape of the sheet. Further, instead of the method of making the perforations discontinuous, (1) means for providing anti-slip means on the outer surface of the film in the edge region along the perforations, (2) high water absorption in the pulp fiber layer Examples include a means for disposing a polymer to prevent the film layer from getting wet, and (3) a means for disposing a hydrophobic material (for example, a hydrophobic adhesive) between the film layer and the pulp fiber layer. It is done. In particular, the means (3) is preferable because urine leakage from the edge is prevented even when a large amount of urination is performed or when the animal urinates near the edge of the sheet.

Next, the effect at the time of using the animal excrement disposal sheet | seat 1 of this embodiment of this invention mentioned above is demonstrated.
As shown in FIG. 1, the animal excrement disposal sheet 1 of the present embodiment is formed by laminating a film layer 3 made of a heat-fusible resin on one surface of a pulp fiber layer 2 containing pulp fibers. The pulp fiber layer 2 satisfies the conditions that the basis weight is 25 to 100 g / m ² , the saturated water absorption is 240 g / m ² or more, and the thickness is 0.2 mm to 1 mm at the same time. The pulp fiber layer 2 has a basis weight of 25 g / m ² or more, a saturated water absorption of 240 g / m ² or more, and a thickness of 0.2 mm or more, thereby sufficiently holding animal excrement, particularly dog urine. be able to. In addition, when the basis weight of the pulp fiber layer 2 is 100 g / m ² or less and the thickness is 1 mm or less, as shown in FIG. 2, the animal excrement disposal sheet 1 is wound into a roll shape, If you do, you can make it compact. As shown in FIG. 4, it is compact even if it forms the product form which packed two of the excrement disposal sheets 1 for animals of a roll form into one set, and packed them.

Moreover, as shown in FIG. 1, the animal excrement disposal sheet 1 of this embodiment has a film layer 3 made of a heat-fusible resin laminated on one surface of a pulp fiber layer 2 containing pulp fibers. When the pulp fiber layer 2 is a wet nonwoven fabric or a dry pulp nonwoven fabric containing 100% by mass of pulp fiber or 20% by mass or less of an adhesive such as binder fiber, animal excrement In particular, after holding the dog's urine, the pulp fibers are easily broken and the degree of freedom of the film layer 3 is not hindered. Therefore, when the basis weight of the pulp fiber layer 2 is 100 g / m ² or less and the thickness is 1 mm or less, an animal, particularly a dog, after excretion can be torn even if the animal excrement disposal sheet 1 after holding urine is scratched. It is difficult to get the floor dirty.

  Moreover, as shown in FIG. 1, the animal excrement disposal sheet 1 of this embodiment has a film layer 3 made of a heat-fusible resin laminated on one surface of a pulp fiber layer 2 containing pulp fibers. The film layer 3 satisfies the condition that the coefficient of static friction measured according to JIS K 7125 satisfies 0.45 or more. Therefore, when the animal excrement disposal sheet 1 is placed on the floor or the like, it is difficult to slip.

  In addition to dog urine, the animal excrement disposal sheet of the present invention can be suitably used, for example, for the treatment of other animal urine, female dog menstrual blood, and other animal female menstrual blood.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

[Example 1]
A dry-type non-woven fabric with 97% pulp fiber and 3.3% binder with a fiber diameter of 3.3 dtex, a wet non-woven fabric with a basis weight of 45 g / m ² , a saturated water absorption of 310 g / m ² and a thickness of 0.35 mm (Klem water absorption height of 34 mm) On one side, a heat-fusible resin made of ethylene-methyl methacrylate copolymer (EMMA) was laminated to be fused and integrated to obtain a target animal excrement disposal sheet. The static friction coefficient of the laminate-side surface (film layer) of the animal excrement disposal sheet was 0.58. The basis weight, saturated water absorption, thickness, and static friction coefficient were measured by the methods described above.

[Comparative Example 1]
In Example 1, the film layer was fused and integrated by laminating a heat-fusible resin made of polyethylene (PE) instead of EMMA to obtain a target animal excrement disposal sheet. The coefficient of friction of the laminate-side surface (film layer) of the animal excrement disposal sheet was 0.32. As in Example 1, the basis weight, saturated water absorption, thickness, and static friction coefficient were measured by the methods described above.

[Evaluation of animal excrement disposal sheets]
Each animal excrement disposal sheet of Example 1 and Comparative Example 1 was cut into a vertical length of 320 mm and a horizontal length of 320 mm. Whether 30 cc physiological saline equivalent to the amount of urine for a single dog is supplied to the center of each animal excrement disposal sheet after cutting, and whether each animal excrement disposal sheet can retain physiological saline Was evaluated. The evaluation was performed 10 sheets for each animal excrement disposal sheet.
A (highest evaluation) when the number of physiological saline that could be retained without leaking from the animal excrement disposal sheet was 10 (B), 8 to 9 was B, 7 or less was C (lowest evaluation) ). These results are shown in Table 1 below.

  As is apparent from Table 1, it was found that the animal excrement disposal sheet of Example 1 can sufficiently retain physiological saline even though the thickness thereof is thin. Moreover, since the animal excrement disposal sheet of Example 1 has a high coefficient of friction, it is difficult to slip when dried. On the other hand, the supplied physiological saline diffuses widely in the surface direction of the sheet, so that the sheet as a whole is relatively slippery after being wet. Further, the non-slip state is maintained by the non-linear edge formed by the perforation, so that the sheet can be prevented from being turned over.

It is sectional drawing of the excrement disposal sheet | seat for animals which is embodiment of this invention. It is a perspective view of the roll form of the excrement disposal sheet for animals which is an embodiment of the present invention. It is a top view of the excrement disposal sheet for animals which is an embodiment of the present invention. It is a perspective view of the state which packed two animal excrement disposal sheets of the roll form shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Animal excrement disposal sheet | seat 1a, 1b Both ends of a longitudinal direction 1c, 1d Both sides of a longitudinal direction C Central area | region 2 Pulp fiber layer 3 Film layer

Claims (8)

An animal excrement treatment sheet in which a film layer made of a heat-fusible resin is laminated on one surface of a pulp fiber layer containing pulp fibers,
The pulp fiber layer has a basis weight of 25 to 100 g / m ² , a saturated water absorption of 240 g / m ² or more, and a thickness of 0.2 mm to 1 mm,
The film layer is an animal excrement disposal sheet having a coefficient of static friction measured according to JIS K 7125 of 0.45 or more.   The animal excrement disposal sheet according to claim 1, wherein the heat-fusible resin is an ethylene-methyl methacrylate copolymer (EMMA).   3. The animal excrement disposal sheet according to claim 1, wherein the pulp fiber layer has a Krem water absorption height of 15 mm width measured in accordance with JIS P 8141 of 30 mm or more in 10 seconds.   The animal excrement disposal sheet according to any one of claims 1 to 3, wherein the pulp fiber layer is a wet nonwoven fabric or a dry pulp nonwoven fabric.   The animal excrement disposal sheet according to any one of claims 1 to 4, wherein the animal excrement disposal sheet is wound in a roll shape, and perforations are formed at regular intervals in a direction perpendicular to the flow direction of the roll. Material processing sheet.   The animal excrement disposal sheet according to any one of claims 1 to 4, wherein the pulp fiber layer and / or the film layer is provided with a design, a pattern or an emboss.   The animal excrement disposal sheet according to any one of claims 1 to 4, wherein the pulp fiber layer and / or the film layer contains both or one of a deodorizing effect component and an antibacterial agent.   The animal excrement disposal sheet according to any one of claims 1 to 7, wherein anti-slip means is provided along the edges of the two sides of the animal excrement disposal sheet.

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