JP2017039096A - Water absorption treatment material and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-absorbing treatment material and method for producing the same in which the covering part is not easily peeled off or broken.SOLUTION: A water-absorbing treatment material 1 is a water-absorbing treatment material that absorbs liquid, and includes a core part 10, a covering part 20, and a coating part 30. The core part 10 is formed in a granular shape and has a water absorbing property. A covering part 20 is provided so as to cover the core part 10. A coating part 30 is provided so as to enclose the core part 10 and the covering part 20. The coating part 30 is structured so as to break when the water-absorbing treatment material 1 absorbs liquid.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water-absorbing treatment material that absorbs liquid and a method for producing the same.

  Patent Document 1 describes an excrement treatment material which is a kind of water absorption treatment material. In this excrement disposal material, a core part formed in a granular form and a covering part covering the core part are provided. The covering portion has a function of adhering excrement disposal materials that have absorbed excrement during use. Thereby, after use, the lump which consists of a plurality of excrement disposal materials is formed.

JP 2006-333773 A

  By forming a lump in this way, it becomes easy to distinguish and remove used ones from a large number of water-absorbing treatment materials in which unused ones and used ones are mixed. However, the conventional water-absorbing treatment material has a problem that the covering portion is peeled off or broken before use. Such peeling or the like leads to a deterioration in the quality of the water-absorbing treatment material.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a water-absorbing treatment material that does not easily cause peeling or chipping of a covering portion and a method for manufacturing the same.

  The water-absorbing treatment material according to the present invention is a water-absorbing treatment material that absorbs liquid, and is provided so as to wrap the granular core portion having water absorption, a covering portion that covers the core portion, and the core portion and the covering portion. And the coating part is configured to be broken when the water-absorbing treatment material absorbs the liquid.

  In this water-absorbing treatment material, a coating part is provided so as to wrap the core part and the covering part. Thereby, since a coating | coated part is no longer exposed to the exterior of a water absorption processing material, it can be made hard to produce peeling and a defect | deletion of a coating | coated part before use.

  Moreover, the manufacturing method of the water absorption processing material by this invention is a method of manufacturing the water absorption processing material which absorbs a liquid, Comprising: The core part formation process which forms the granular core part which has water absorption, The said core part is covered. A coating portion forming step for forming a coating portion, and a coating portion forming step for forming a coating portion so as to wrap the core portion and the covering portion, wherein the water absorption treatment material is the coating portion. It is formed so as to break when absorbing liquid.

  In this manufacturing method, the coating part is formed so as to enclose the core part and the covering part. Thereby, in the water absorption processing material after manufacture, since a coating | coated part is no longer exposed to the exterior of the said water absorption processing material, it can make it hard to produce peeling and a defect | deletion of a coating | coated part before use.

  ADVANTAGE OF THE INVENTION According to this invention, the water absorption processing material which a peeling and a defect | deletion of a coating | cover part cannot produce easily, and its manufacturing method are implement | achieved.

It is a schematic diagram which shows one 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 reference numerals are assigned to the same elements, and duplicate descriptions are omitted.

  FIG. 1 is a schematic view showing an embodiment of a water-absorbing treatment material according to the present invention. The water absorption treatment material 1 is a water absorption treatment material that absorbs liquid, and includes a core portion 10, a covering portion 20, and a coating portion 30. The water-absorbing treatment material 1 is, for example, an excrement treatment material that absorbs human or animal excrement.

  The core part 10 is formed into a granular shape. Examples of the shape of the core part 10 include a sphere, an ellipsoid, and a cylinder. The core part 10 has water absorption, and has a function of absorbing and retaining a liquid such as urine. The core part 10 contains a water absorbing material (first water absorbing material). As the first water-absorbing material, for example, papers, tea husks, plastics, or okara can be used. The first water-absorbing material is preferably the main material of the core part 10. Here, the main material of the core part 10 means a material having the largest weight ratio in the core part 10 among the materials constituting the core part 10.

  Paper refers to a material mainly composed of pulp. Examples of papers include, in addition to ordinary paper, PVC wallpaper classifieds (paper obtained by classifying PVC wallpaper), fluff pulp, papermaking sludge, pulp sludge, and the like. As plastics, for example, a paper diaper classification product (plastic obtained by classifying paper diapers) may be used. The okara is preferably dry okara.

  A covering portion 20 is provided so as to cover the core portion 10. The covering portion 20 may cover the entire surface of the core portion 10 or may cover only a part of the surface of the core portion 10. The covering portion 20 has a function of bonding the water-absorbing treatment materials 1 that have absorbed the liquid during use. Thereby, the lump which consists of a plurality of water-absorbing treatment materials 1 is formed after use.

  The covering portion 20 contains a water-absorbing material (second water-absorbing material) and an adhesive material (second adhesive material). As the second water-absorbing material, for example, papers, tea husks, plastics, or okara can be used. The second water-absorbing material may be the same as or different from the first water-absorbing material. The second water-absorbing material is preferably the main material of the covering portion 20. The definition of the main material of the coating | coated part 20 is the same as the definition of the main material of the core part 10 mentioned above.

  As the second adhesive material, for example, a water-insoluble adhesive material can be used. Examples of such an adhesive material include a water-absorbing polymer. The water-absorbing polymer preferably has an average particle size of 20 μm or less. Here, the average particle diameter means a minimum opening through which particles of 50% by weight or more can pass when a water-absorbing polymer that is an aggregate of a large number of particles is passed through a sieve. Therefore, an average particle diameter of 20 μm or less means that 50% by weight or more of particles can pass when the water-absorbing polymer is passed through a sieve having an opening of 20 μm.

  A coating portion 30 is provided so as to wrap the core portion 10 and the covering portion 20. The coating part 30 is formed on the coating part 20 and is located on the outermost surface of the water-absorbing treatment material 1. The film part 30 contains an adhesive material (first adhesive material). As the first adhesive material, for example, starch or dextrin can be used. The first adhesive material is preferably the main material of the coating portion 30. The definition of the main material of the film part 30 is the same as the definition of the main material of the core part 10 mentioned above. The film part 30 may consist only of the 1st adhesive material. The weight ratio of the first adhesive material occupying the coating portion 30 is larger than the weight ratio of the second adhesive material occupying the coating portion 20. Further, the first adhesive material is preferably water-soluble. In this embodiment, the film part 30 consists only of water-soluble materials, and does not contain the water-insoluble material.

  The thickness of the coating portion 30 is preferably 20% or less of the thickness of the coating portion 20, and more preferably 10% or less. The thickness of the coating part 30 is 0.1 mm or less, for example. In the present embodiment, the coating part 30 is transparent (including translucent, the same applies hereinafter). Therefore, the covering portion 20 can be seen through the covering portion 30. The film part 30 is configured to be broken when the water-absorbing treatment material 1 absorbs liquid. That is, the coating part 30 is configured to be broken when receiving a liquid.

  Then, an example of the manufacturing method of the water absorption processing material 1 is demonstrated as one Embodiment of the manufacturing method of the water absorption processing material by this invention. This manufacturing method includes a core portion forming step, a covering portion forming step, and a coating portion forming step.

  The core portion forming step is a step of forming the core portion 10. In this step, the material constituting the core 10 (core material) is pulverized to a predetermined size by a pulverizer, and then charged into a mixer at a predetermined ratio and mixed. And after adding water as needed, core part material is extrusion granulated with a granulator. Thereby, the core part 10 shape | molded by the granule is obtained.

  The covering portion forming step is a step of forming the covering portion 20. In this step, a material (coating material) constituting the covering portion 20 is attached around the core portion 10. Specifically, a powdery coating material is attached around the core 10. The coating material contains a second water-absorbing material and a second adhesive material. For the attachment of the coating material, for example, a coating apparatus can be used. At this time, the coating material adheres to the periphery of the core part 10 mainly due to moisture contained in the core part 10. Thereby, the coating | coated part 20 which covers the core part 10 is obtained.

  The coating part forming process is a process of forming the coating part 30. In this step, a material (coating material) constituting the coating portion 30 is attached around the covering portion 20. Specifically, a liquid coating material is attached around the coating portion 20. The coating material contains the first adhesive material. The first adhesive material is preferably the main material of the coating material. The coating material may consist only of the first adhesive material. The weight ratio of the first adhesive material in the coating material is larger than the weight ratio of the second adhesive material in the coating material. For example, liquid starch or liquid dextrin may be used as the coating material. The coating material can be attached by, for example, spraying the coating material around the coating portion 20 using a spray device or the like. At this time, the coating material adheres around the coating portion 20 mainly by the adhesive force of the coating material itself. In this way, the coating material adhering to the periphery of the covering portion 20 is dried, whereby a coating (oblate) is formed on the covering portion 20. Thereby, the coating | coated part 30 which wraps the core part 10 and the coating | coated part 20 is obtained.

  In addition, it is preferable that it is 20% or less of the thickness of the coating part 20 formed in a coating | coated part formation process, and, as for the thickness of the coating part 30 formed in a coating part formation process, it is more preferable that it is 10% or less. In the present embodiment, a transparent coating 30 is formed. The film part 30 is formed so that it may be broken when the water-absorbing treatment material 1 after production absorbs the liquid.

  Then, the granular material obtained in this way is sieved to extract only the granular material satisfying a predetermined standard (a sizing step). And the extracted granule is dried with a dryer (drying process). By this drying, the moisture content of the core 10 is adjusted as appropriate. Thus, the water absorption treatment material 1 is obtained.

  The effect of this embodiment will be described. In the present embodiment, the coating part 30 is formed so as to enclose the core part 10 and the covering part 20. Thereby, in the water absorption treatment material 1, since the coating | coated part 20 is no longer exposed to the exterior of the said water absorption treatment material 1, it can make it difficult to produce peeling and a defect | deletion of the coating | coated part 20 before use.

  By the way, such granular water-absorbing treatment materials are usually shipped in a state in which a plurality of such water-absorbing treatment materials are accommodated in one packaging bag. Therefore, in the conventional water-absorbing treatment material, the respective water-absorbing treatment materials often rub against other water-absorbing treatment materials or packaging bags during transportation and the like, and thus the coating layer is often peeled off or lost. Thus, when peeling of a coating layer etc. occur in a packaging bag, it will become a cause when dust opens when opening a packaging bag and using a water absorption processing material. In this regard, according to the present embodiment, generation of such dust can also be suppressed.

  Furthermore, in this embodiment, the film part 30 is comprised so that it may be torn when the water absorption processing material 1 absorbs a liquid. Thereby, it can avoid that the absorption of the liquid by the water absorption processing material 1 is prevented by the film part 30. FIG.

  The coating material contains the first adhesive material. Thereby, a film (coating part 30) can be easily formed on the covering part 20. When the first adhesive material is the main material of the coating material, the formation of such a coating is particularly easy. Moreover, when the 1st adhesive material is water-soluble, when the water absorption processing material 1 absorbs a liquid, the film part 30 can be made easy to tear.

  The weight ratio of the first adhesive material in the coating portion 30 (coating material) is larger than the weight ratio of the second adhesive material in the coating portion 20 (covering material). Increasing the weight ratio of the first adhesive material in the coating portion 30 in this way is advantageous for easily forming a coating on the coating portion 20. On the other hand, if the weight ratio of the second adhesive material in the covering portion 20 is too large, liquid absorption by the water-absorbing treatment material 1 is hindered. This is because the flow of the liquid that attempts to reach the core portion 10 through the covering portion 20 is blocked by the second adhesive material. Therefore, reducing the weight ratio of the second adhesive material in the covering portion 20 is advantageous in improving the liquid absorption performance of the water-absorbing treatment material 1.

  By reducing the thickness of the coating portion 30, the coating portion 30 can be easily broken when the water-absorbing treatment material 1 absorbs the liquid. From this point of view, the thickness of the coating portion 30 is preferably 20% or less, more preferably 10% or less, of the thickness of the coating portion 20.

  The coating part 30 is transparent. Thereby, since the coating | coated part 20 is visually recognizable through the film part 30, the beauty | look of the water absorption processing material 1 can be improved, utilizing the color which the coating | coated part 20 has.

  The coating portion 30 is formed by attaching a liquid coating material around the coating portion 20. According to this method, the thin coating part 30 can be formed easily. This is because a relatively small amount of the coating material is easily attached to the coating portion 20 because the coating material is liquid.

  The covering portion 20 is formed by attaching a powdery covering material around the core portion 10. According to such a method, the covering portion 20 having a certain thickness can be easily formed. This is because a relatively large amount of the coating material is easily attached to the core portion 10 because the coating material is in a powder form. However, when a powdery coating material is used in this way, dust is likely to be generated due to peeling of the coating portion or the like. Therefore, in this case, the present embodiment that can suppress the generation of the dust is particularly useful.

  The present invention is not limited to the above embodiment, and various modifications can be made. In the said embodiment, the case where the film part formation process was performed prior to the sizing process was illustrated. However, the coating film forming step may be performed after the sizing step. Specifically, the coating film forming step may be executed between the sizing step and the drying step, or may be executed after the drying step.

DESCRIPTION OF SYMBOLS 1 Water absorption treatment material 10 Core part 20 Covering part 30 Coating part

Claims (26)

A water-absorbing treatment material that absorbs liquid,
A granular core having water absorption;
A covering portion covering the core portion;
A coating part provided so as to wrap the core part and the covering part,
The water absorption treatment material, wherein the coating portion is configured to be broken when the water absorption treatment material absorbs the liquid. The water-absorbing treatment material according to claim 1,
The said coating | coated part is a water absorption processing material containing a 1st adhesive material. The water-absorbing treatment material according to claim 2,
The first adhesive material is a water absorption treatment material that is a main material of the coating portion. In the water absorption processing material of Claim 2 or 3,
The first adhesive material is a water-absorbing treatment material that is water-soluble. In the water absorption processing material in any one of Claims 2 thru | or 4,
The first adhesive material is a water-absorbing treatment material that is starch or dextrin. In the water-absorbing treatment material according to any one of claims 2 to 5,
The said coating | coated part is a water absorption processing material containing a 2nd adhesive material. The water-absorbing treatment material according to claim 6,
The second adhesive material is a water-absorbing treatment material that is water-insoluble. The water-absorbing treatment material according to claim 7,
The second adhesive material is a water-absorbing treatment material that is a water-absorbing polymer. The water-absorbing treatment material according to any one of claims 6 to 8,
A water absorption treatment material in which a weight ratio of the first adhesive material in the coating portion is larger than a weight ratio of the second adhesive material in the coating portion. In the water absorption processing material in any one of Claims 1 thru | or 9,
The thickness of the said coating | coated part is a water absorption processing material which is 20% or less of the thickness of the said coating | coated part. The water-absorbing treatment material according to claim 10,
The thickness of the said coating | coated part is a water absorption processing material which is 10% or less of the thickness of the said coating | coated part. In the water absorption processing material in any one of Claims 1 thru | or 11,
The film portion is a water-absorbing treatment material that is transparent. A method for producing a water-absorbing treatment material that absorbs liquid,
A core portion forming step for forming a granular core portion having water absorption;
A covering portion forming step of forming a covering portion so as to cover the core portion;
A film part forming step of forming a film part so as to wrap the core part and the covering part,
The method of manufacturing a water-absorbing treatment material, wherein the coating portion is formed so as to be broken when the water-absorbing treatment material absorbs the liquid. In the manufacturing method of the water absorption processing material according to claim 13,
In the coating portion forming step, a method for producing a water-absorbing treatment material, wherein the coating portion is formed by attaching a liquid coating material around the covering portion. In the manufacturing method of the water absorption processing material of Claim 14,
The coating material is a method for producing a water-absorbing treatment material containing a first adhesive material. In the manufacturing method of the water absorption processing material of Claim 15,
The first adhesive material is a method for manufacturing a water-absorbing treatment material that is a main material of the coating material. In the manufacturing method of the water absorption processing material of Claim 15 or 16,
The first adhesive material is a method for producing a water-absorbing treatment material that is water-soluble. In the manufacturing method of the water absorption processing material in any one of Claims 15 thru | or 17,
The method for producing a water-absorbing treatment material, wherein the first adhesive material is starch or dextrin. In the manufacturing method of the water absorption processing material in any one of Claims 15 thru | or 18,
In the covering portion forming step, a water absorbing treatment material manufacturing method for forming the covering portion by adhering a powdery covering material around the core portion. In the manufacturing method of the water absorption processing material according to claim 19,
The said coating material is a manufacturing method of the water absorption processing material containing a 2nd adhesive material. In the manufacturing method of the water absorption treatment material according to claim 20,
The method for producing a water-absorbing treatment material, wherein the second adhesive material is water-insoluble. In the manufacturing method of the water absorption processing material according to claim 21,
The method for producing a water-absorbing treatment material, wherein the second adhesive material is a water-absorbing polymer. In the manufacturing method of the water absorption processing material in any one of Claims 15 thru | or 22,
The method for producing a water-absorbing treatment material, wherein a weight ratio of the first adhesive material in the coating material is larger than a weight ratio of the second adhesive material in the coating material. In the manufacturing method of the water absorption processing material in any one of Claims 13 thru | or 23,
In the coating portion forming step, a method for producing a water-absorbing treatment material that forms the coating portion so that the thickness of the coating portion is 20% or less of the thickness of the covering portion. In the manufacturing method of the water absorption processing material of Claim 24,
In the coating portion forming step, a method for producing a water-absorbing treatment material that forms the coating portion so that the thickness of the coating portion is 10% or less of the thickness of the covering portion. In the manufacturing method of the water absorption processing material in any one of Claims 13 thru | or 25,
In the coating part forming step, a method for producing a water-absorbing treatment material that forms the transparent coating part.

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