JP6510877B2 - Water absorption treatment material and method for producing the same - Google Patents

Description

  The present invention relates to a water-absorbent material that absorbs human or animal excrement and other liquids, and a method for producing the same.

  As a conventional water absorption treatment material, there is, for example, one described in Patent Document 1. The same document describes an excrement treating material which is a kind of water absorption treating material. The excrement treating material is a particulate excrement treating material, and includes a core and a covering portion covering the core. The core portion is formed by granulating a water absorbent material such as an organic waste material.

Japanese Patent Application Publication No. 2007-190026

  In the excrement treating material having such a configuration, the urine reaching the core through the covering portion is absorbed by the core. Therefore, if the waste disposal material after absorption is discarded, the urine excreted by the animal can be disposed of together. Thus, by absorbing the liquid in the water absorption treatment material, the treatment of the liquid becomes easy. However, the conventional water absorption treatment material has room for improvement in terms of water absorption speed.

  This invention is made in view of the said subject, and it aims at providing the water absorption processing material excellent in water absorption speed, and its manufacturing method.

  The water absorption treatment material according to the present invention is a granular water absorption treatment material that absorbs a liquid, and has a water absorption property, and is provided with a core portion composed of a plurality of particles and a covering portion covering the core portion. It features.

  In the water absorption treated material, the core portion is composed of a plurality of particulates. In this case, a core portion having a large surface area can be obtained as compared with the case where the core portion is formed of one particulate matter. As a result, the contact area of the core with respect to the liquid increases, so that the water absorption speed can be improved.

  Further, a method of manufacturing a water absorption treated material according to the present invention is a method of manufacturing a granular water absorption treated material which absorbs a liquid, wherein the granular material forming step of forming a plurality of particles having water absorbency; And a covering portion forming step of forming a covering portion so as to collectively cover the plurality of particles formed in the forming step.

  In this manufacturing method, the covering portion is formed so as to collectively cover a plurality of particles. For this reason, in the water absorption treated material after production, the core portion is composed of a plurality of granular materials. In this case, a core portion having a large surface area can be obtained as compared with the case where the core portion is formed of one particulate matter. As a result, the contact area of the core with respect to the liquid increases, so that the water absorption speed can be improved.

  According to the present invention, a water absorption treated material excellent in water absorption speed and a method for producing the same are realized.

It is a schematic diagram which shows 1st Embodiment of the water absorption processing material by this invention. It is a schematic diagram which shows 2nd Embodiment of the water absorption processing material by this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.
First Embodiment

  FIG. 1 is a schematic view showing a first embodiment of a water absorption treatment material according to the present invention. The water absorption treatment material 1 is a granular water absorption treatment material that absorbs a liquid, and includes a core portion 10 and a covering portion 20. The particle diameter of the water absorption treated material 1 is, for example, 5 mm or more and 15 mm or less. Here, the particle diameter of the water absorption treated material 1 is defined as the diameter of the smallest sphere that can contain the water absorption treated material 1. The water absorption treatment material 1 is, for example, an excrement treatment material for companion animals such as cats and dogs. In that case, many water absorption processing materials 1 are used in the state laid in the toilet for animals.

  The core portion 10 has water absorbency, and has a function of absorbing and retaining liquid such as excrement. The core 10 is composed of a plurality of (two in the present embodiment) particulates 12 and 14. As a shape of each granular material 12 and 14, a sphere, an ellipsoid, a cylinder, etc. are mentioned, for example.

  Each particulate matter 12 and 14 contains a water absorbing material, and has water absorbency. Examples of the water-absorbent material include papers, tea shells, plastics, or okara. It is preferable that each particulate matter 12 and 14 uses such a water absorbing material as a main material. Here, the main material means, among the materials constituting the granular material, the material having the largest proportion by weight of the granular material. The material constituting the particulate matter 12 and the material constituting the particulate matter 14 may be the same or different.

  Papers refer to materials mainly composed of pulp. Examples of paper include, in addition to ordinary paper, polyvinyl chloride wallpaper classification (paper obtained by classifying polyvinyl chloride wallpaper), fluff pulp, papermaking sludge, pulp sludge and the like. As plastics, you may use a disposable diaper classification (plastic obtained by classifying a disposable diaper), for example. Okara is preferably dried Okara.

  The particle diameter of each particulate matter 12 and 14 is, for example, 2 mm or more and 7 mm or less. The definition of the particle size of each particulate matter 12 and 14 is as described above for the water absorption treated material 1. The particle size of the particulate matter 12 and the particle size of the particulate matter 14 may be the same or different.

  The covering portion 20 covers the core portion 10. That is, the covering portion 20 is provided so as to collectively cover the particulate matter 12 and the particulate matter 14. As a result, the plurality of particulates 12 and 14 are confined in one space surrounded by the covering portion 20. In the present embodiment, a recess 20 a is present on the surface of the covering portion 20. The recess 20 a is located on the recess 10 a on the surface of the core 10 (the portion where the particulate matter 12 and the particulate matter 14 contact).

  The covering portion 20 contains an adhesive material, and has a function of adhering the water absorption treated materials 1 having absorbed the liquid at the time of use. The adhesive material includes, for example, a water absorbing polymer, starch, CMC (carboxymethylcellulose), PVA (polyvinyl alcohol) or dextrin. The covering portion 20 contains a water absorbing material in addition to the adhesive material.

  Subsequently, an example of a method of manufacturing the water absorption treated material 1 will be described as a first embodiment of the method of manufacturing the water absorption treated material according to the present invention. The manufacturing method includes a particulate matter forming step and a covering portion forming step.

  The particulate matter forming step is a step of forming the particulate matter 12 and the particulate matter 14. In this step, the material constituting the particulate matter 12 is shredded by a grinder or the like, and then charged into a mixer and mixed. Then, after water is added if necessary, the above material is extruded and granulated by a granulator. Thereby, the particulate matter 12 is obtained. Similarly, particulate matter 14 can be obtained. The relationship between the formation of the particulate matter 12 and the formation of the particulate matter 14 is arbitrary, and both may be performed simultaneously. As described above, in the present embodiment, the granules 12 and 14 are formed by extrusion granulation.

  The coating portion forming step is a step of forming the coating portion 20 so as to collectively cover the particulate matter 12 and the particulate matter 14 formed in the particulate matter forming step. In this process, the material (coating material) which comprises the coating | coated part 20 is adhered on the surface of the granular materials 12 and 14 using a coating apparatus etc. The coating material contains an adhesive material. The application of the coating material can be carried out, for example, by spraying or spraying. At this time, the cover 20 is formed in such a manner that a recess 20 a is formed on the surface of the cover 20. For example, the coating material is uniformly dispersed on the surface of the core 10 (the aggregate of the particulate matter 12 and the particulate matter 14) or the like, thereby covering the covering portion 20 having the recess 20a corresponding to the recess 10a on the surface of the core 10 It can be formed.

  Thereafter, the water absorption treated material thus obtained is sieved to extract only the water absorption treated material that satisfies the predetermined standard. Then, the extracted water absorbing material is dried by a dryer. Water absorption processing material 1 is obtained by the above.

  The effects of this embodiment will be described. In the present embodiment, the covering portion 20 is formed so as to collectively cover the particulate matter 12 and the particulate matter 14. For this reason, in the water absorption treated material 1, the core portion 10 is composed of a plurality of particulates (particulates 12 and 14). In this case, the core portion 10 having a large surface area can be obtained as compared with the case where the core portion 10 is formed of one granular material. For example, if the volume of the entire core 10 is the same, the surface area of the core 10 is greater in the case where the core 10 is composed of a plurality of small particles than in the case where the core 10 is composed of one large particle. growing. Since the contact area with respect to the liquid of core part 10 becomes large by this, the water absorption speed of core part 10 and by extension water absorption processing material 1 can be raised. Therefore, the water absorption treatment material 1 excellent in water absorption speed and a method of manufacturing the same are realized.

  A recess 20 a is present on the surface of the cover 20. In this case, a coated portion 20 having a large surface area is obtained as compared with the case where the recess 20a is not present. This also contributes to the improvement of the water absorption speed of the water absorption treated material 1.

  The covering portion 20 is formed by adhering a covering material to the surface of the particulate matter 12, 14. Thereby, the coating | coated part 20 can be formed easily. Further, according to this method, since the surface shape of the covering portion 20 can be easily made to correspond to the surface shape of the core portion 10, the covering portion 20 having the recess 20a can be easily obtained.

  The covering portion 20 contains an adhesive material. As a result, it is possible to bond the water absorption treated materials 1 that have absorbed the liquid at the time of use to form a solid. Thus, by forming a lump made of used water absorption processing material 1 (water absorption processing material 1 which has absorbed liquid), unused water absorption processing material 1 (water absorption processing material 1 which does not absorb liquid) can be obtained. It becomes easy to selectively remove the used water absorption treated material 1 from the large number of water absorption treated materials 1 contained.

  The particulates 12 and 14 are formed by extrusion granulation. Thereby, the particulates 12 and 14 can be easily formed.

When the particulate matter 12 and the particulate matter 14 are made of the same material, it is not necessary to distinguish between them at the time of production, so the production of the water absorption treated material 1 is facilitated.
Second Embodiment

  FIG. 2 is a schematic view showing a second embodiment of the water absorption treatment material according to the present invention. The water absorption treatment material 2 is a granular water absorption treatment material that absorbs liquid, and includes a core portion 30 and a covering portion 40. The particle diameter of the water absorption treated material 2 is, for example, 5 mm or more and 15 mm or less.

  The core portion 30 has water absorbency, and has a function of absorbing and retaining liquid. The core portion 30 is composed of a large number of particles. These particles include particles 32 (first particles), particles 34 (second particles) and particles 36 (third particles). The particulate matter 32, the particulate matter 34 and the particulate matter 36 are provided in plurality.

  Each particulate matter 32, 34, and 36 contains a water absorbing material and has water absorbency. The average particle size of these particulates 32, 34, 36 is preferably less than 2 mm, more preferably less than 1 mm. Here, the average particle size is defined as an arithmetic mean of the particle sizes of the particles 32, 34, 36 constituting the core 30. The definition of the particle size of each particulate matter 32, 34, 36 is as described above for the water absorption treated material 1.

  The particulate matter 32 contains a deodorizing component and has a deodorizing effect on liquid such as excrement. As a deodorizing component, for example, ground material of tea husk, activated carbon, coffee beans or instant coffee can be used.

  The particulate matter 34 contains an aroma component and has an aroma effect. As the aroma component, for example, a natural flavor that emits an aroma of eucalyptus, rosemary or other herbs, or a synthetic flavor that emits a soap aroma or a flower aroma can be used.

  The particulate matter 36 contains a pigment, and has an action (discoloring action) to change color when it comes in contact with a liquid. As a pigment, for example, a dye can be used.

  The cover 40 covers the core 30. That is, the coating | coated part 40 is provided so that granular material 32,34,36 may be covered collectively. The covering portion 40 contains an adhesive material, and has a function of adhering the water absorption treated materials 2 that have absorbed the liquid during use. The covering portion 40 includes a water absorbing material in addition to the adhesive material.

  Subsequently, an example of a method of manufacturing the water absorption treated material 2 will be described as a second embodiment of the method of manufacturing the water absorption treated material according to the present invention. The manufacturing method includes a particulate matter forming step and a covering portion forming step.

  The particulate matter forming step is a step of forming the particulate matter 32, the particulate matter 34 and the particulate matter 36. The formation of each particulate matter 32, 34, and 36 can be performed, for example, by the same method as the formation of the particulate matter 12 described above. At this time, it is preferable that the average particle diameter of the particulate matter 32, 34, and 36 be less than 2 mm, and more preferably less than 1 mm. For example, in the case of forming the particulate matter 32, 34, 36 by extrusion granulation, it is necessary to obtain the particulate matter 32, 34, 36 of a desired particle diameter by adjusting the pore diameter of the die of the granulator etc. Can.

  The coating portion forming step is a step of forming the coating portion 40 so as to collectively cover the particulate matter 32, the particulate matter 34 and the particulate matter 36 formed in the particulate matter forming step. In this step, the material constituting the covering portion 40 is attached to the surfaces of the particulate matter 32, 34, 36 using a coating apparatus or the like.

  Thereafter, the water absorption treated material thus obtained is sieved to extract only the water absorption treated material that satisfies the predetermined standard. Then, the extracted water absorbing material is dried by a dryer. Water absorption processing material 2 is obtained by the above.

  The effects of this embodiment will be described. In the present embodiment, the covering portion 40 is formed so as to collectively cover the particulate matter 32, the particulate matter 34 and the particulate matter 36. For this reason, in the water absorption treated material 2, the core portion 30 is composed of a plurality of particulates (particulates 32, particulates 34, and particulates 36). In this case, the core portion 30 having a large surface area can be obtained as compared with the case where the core portion 30 is formed of one granular material. As a result, the contact area of the core portion 30 with respect to the liquid is increased, so that it is possible to improve the water absorption speed of the core portion 30 and hence the water absorption treated material 2. Therefore, the water absorption treated material 2 excellent in water absorption speed and a method of manufacturing the same are realized.

  The core portion 30 is composed of a large number (approximately six or more) of particles. Thereby, since the core part 30 which has especially large surface area is obtained, the water absorption speed | rate of the water absorption process material 2 can be improved further.

  The core 30 is provided with particulate matter 32 having a deodorizing action. As a result, even when the water absorption treated material 2 absorbs a liquid that emits an offensive odor such as excrement, the offensive odor can be weakened.

  The core 30 is provided with a particulate matter 34 having an aroma effect. As a result, even when the water absorption treated material 2 absorbs a liquid that emits an offensive odor such as excrement, the offensive odor can be masked.

  The core portion 30 is provided with particulate matter 36 having a color change action. Thereby, the used water absorption processing material 2 and the unused water absorption processing material 2 can be visually distinguished easily.

  When the particle diameter of the particulate matter 32, 34, 36 is small, it is possible to prevent the particle diameter of the entire water absorption treated material 2 from becoming too large while configuring the core part 30 with a plurality of particulate matter. From such a viewpoint, the average particle diameter of the particulate matter 32, 34, 36 is preferably less than 2 mm, and more preferably less than 1 mm. The other effects of the present embodiment are as described for the first embodiment.

  In the present embodiment, only one or two of the granular materials 32, 34, and 36 may be provided in the core 30. Further, instead of providing the particulates 32, 34, and 36, it is also possible to provide the core 30 with particulates that do not have these effects (deodorizing action, aroma action, color changing action).

DESCRIPTION OF SYMBOLS 1 water absorption processing material 2 water absorption processing material 10 core part 10a recessed part 12 granular material 14 granular material 20 coating part 20a hollow 30 core part 32 granular material (1st granular material)
34 Particulate matter (second particulate matter)
36 Particulate matter (third particulate matter)
40 Cover

Claims (18)

A granular water absorption material that absorbs liquid,
A core portion having a water absorbing property and composed of a plurality of granules ,
A covering portion covering the core portion;
A water absorption treatment material characterized by comprising: In the water absorption treatment material according to claim 1,
The water absorption treatment material, wherein the plurality of granulated products include a first granulated product having a deodorizing action on the liquid. In the water absorption treatment material according to claim 1 or 2,
The water absorption treatment material according to claim 1, wherein the plurality of granulated products include a second granulated product having an aroma effect. In the water absorption treatment material according to any one of claims 1 to 3,
A water absorption treatment material, comprising: a plurality of granulated products , and a third granulated product having a color changing action of changing color when touched with the liquid. In the water absorption treatment material according to any one of claims 1 to 4,
A water absorption treated material, wherein an average particle diameter of the plurality of granulated products is less than 2 mm. In the water absorption treatment material according to claim 5,
A water absorption treated material, wherein an average particle diameter of the plurality of granulated products is less than 1 mm. In the water absorption treatment material according to any one of claims 1 to 6,
A water absorption treatment material in which a depression is present on the surface of the covering portion. In the water absorption treatment material according to any one of claims 1 to 7,
The covering portion is a water absorbing material containing an adhesive material. A method for producing a particulate water-absorbing material that absorbs liquid, comprising:
A granulated material forming step of forming a plurality of granulated materials having water absorbency,
A covering portion forming step of forming a covering portion so as to collectively cover the granulated product formed said plurality of granules formed in step,
A method of manufacturing a water absorption treated material, comprising: In the method of manufacturing a water absorption treatment material according to claim 9,
In the granulated product formation step, the manufacturing method of water absorbing treatment material for forming a plurality of granules by extrusion granulation. In the method of manufacturing a water absorption treatment material according to claim 9 or 10,
Wherein in the granulated product formation step, as one of the plurality of granules, a manufacturing method of water absorbing treatment material to form a first granulate having a deodorizing effect on the liquid. In the method of manufacturing a water absorption treatment material according to any one of claims 9 to 11,
Wherein in the granulated product formation step, as one of the plurality of granules, a manufacturing method of water absorbing treatment material to form a second granulation containing an aromatic effect. In the method of manufacturing a water absorption treated material according to any one of claims 9 to 12,
Wherein in the granulated product formation step, as one of the plurality of granules, a manufacturing method of water absorbing treatment material to form a third granulate having a color change effect of color change when exposed to the liquid. In the method of manufacturing a water absorption treatment material according to any one of claims 9 to 13,
Wherein in the granulated product formation step, the as the average particle diameter of a plurality of granules is less than 2 mm, the manufacturing method of water absorption treatment material forming the plurality of granules. In the method of manufacturing a water absorption treatment material according to claim 14,
Wherein in the granulated product formation step, the as the average particle diameter of a plurality of granules is less than 1 mm, the manufacturing method of water absorption treatment material forming the plurality of granules. In the method of manufacturing a water absorption treatment material according to any one of claims 9 to 15,
In the covering portion forming step, a method of manufacturing a water absorption treated material, in which the covering portion is formed so that a depression is generated on the surface of the covering portion. In the method of manufacturing a water absorption treated material according to any one of claims 9 to 16,
In the coating portion forming step, a method of manufacturing a water absorption treated material, in which the coating portion is formed by adhering a coating material constituting the coating portion to the surfaces of the plurality of granules . In the method of manufacturing a water absorption treatment material according to claim 17,
The method for producing a water absorption treatment material, wherein the covering material contains an adhesive material.

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