JP6462205B2 - Water absorption treatment material - Google Patents

Description

  The present invention relates to a water-absorbing treatment material that absorbs liquid such as human or animal excrement.

Patent Document 1 describes an excrement treatment material which is a kind of water absorption treatment material. This excrement disposal material has a multilayer structure including a granular core portion and a covering layer portion covering the granular core portion. A colored region is formed on the surface of the granular core by spraying a dye or a pigment. When the covering layer portion absorbs urine, the colored region passes through the covering layer portion and is exposed, so that color development is obtained.
JP 2006-296218 A

  By coloring the water-absorbing treatment material that has absorbed the liquid in this way, the user can easily determine whether or not the water-absorbing treatment material has been used. However, the addition of a coloring material such as a dye or pigment as in the excrement disposal material described in Patent Document 1 causes an increase in the manufacturing cost of the water absorption treatment material.

  The present invention has been made in view of the above problems, and an object thereof is to provide a water-absorbing treatment material that can be easily distinguished before and after use without causing an increase in manufacturing cost.

  A water-absorbing treatment material according to the present invention is a water-absorbing treatment material that absorbs liquid, and contains the fluff pulp obtained by classifying sanitary products including fluff pulp and colored plastic, and the colored plastic. A granular core part that covers the granular core part, and when the water-absorbing treatment material absorbs the liquid, a part of the coating layer part is broken, so that the granular core part is separated from the part. It is characterized in that the color of the colored plastic inside is exposed.

  In this water-absorbing treatment material, when the liquid is absorbed, a part of the coating layer part is broken, and the color of the colored plastic in the granular core part is exposed from the cracked part. By coloring in this way, the user can easily determine whether or not the water absorption treatment material has been used. Further, since the color is developed by exposing the color of the plastic that has been colored in advance, a water-absorbing treatment material that develops color after use can be obtained without adding a coloring material.

  According to the present invention, it is possible to realize a water-absorbing treatment material that can be easily distinguished before and after use without increasing the manufacturing cost.

It is a schematic diagram which shows one Embodiment of the water absorption processing material by this invention. It is a schematic diagram which shows the mode after the water absorption processing material of FIG. 1 absorbed urine.

  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-absorbing treatment material 1 is a water-absorbing treatment material that absorbs a liquid, and includes a granular core portion 10 and a coating layer portion 20. The water absorption treatment material 1 is, for example, an excrement treatment material for pets such as cats and dogs.

  The granular core part 10 has a function of absorbing and retaining a liquid such as urine. The granular core 10 contains fluff pulp 12 and colored plastic (hereinafter referred to as “colored plastic”) 14. The fluff pulp 12 is the main material of the granular core part 10. Here, the main material of the granular core part 10 means a material having the highest weight ratio in the whole material constituting the granular core part 10. The colored plastic 14 may be colored as a whole or only a part thereof may be colored. In the present embodiment, the granular core part 10 also contains a water-absorbing polymer (not shown) (including a highly water-absorbing polymer; the same applies hereinafter). The material constituting the granular core 10 (core material) may be only the fluff pulp 12, the colored plastic 14, and the water-absorbing polymer, or may include other materials.

  The fluff pulp 12, the colored plastic 14, and the water-absorbing polymer are obtained by classifying sanitary goods. Specifically, by classifying sanitary products including fluff pulp, colored plastic and water-absorbing polymer, these fluff pulp, colored plastic and water-absorbing polymer are separated from each other.

  At this time, since it is difficult to completely separate these materials from each other, the other two materials adhere to each material. For example, colored plastic and a water-absorbing polymer adhere to fluff pulp. In this embodiment, since the fluff pulp 12 is used as the material of the granular core part 10, the colored plastic 14 and the water-absorbing polymer adhering thereto are also contained in the granular core part 10. The weight ratio of the colored plastic 14 in the granular core 10 to the fluff pulp 12 in the granular core 10 is preferably 5% or less. The weight ratio of the water-absorbing polymer in the granular core 10 to the fluff pulp 12 in the granular core 10 is also preferably 5% or less.

  The sanitary product is, for example, a paper diaper, a sanitary napkin, or a urine picking pad. As the sanitary goods, it is preferable to use sanitary goods as waste.

  The covering layer portion 20 covers the granular core portion 10. In the present embodiment, the covering layer portion 20 covers the entire surface of the granular core portion 10. The coating layer part 20 has a function (blocking function) in which the water-absorbing treatment materials 1 that have absorbed the liquid are attached to each other to form a block. As a material (coating material) constituting the coating layer portion 20, for example, a mixture of a water absorbing material and an adhesive material can be used. As the water-absorbing material, the above fluff pulp may be used. Moreover, you may use the above-mentioned water absorbing polymer as an adhesive material. The thickness d1 of the covering layer portion 20 is preferably 0.5 mm or less.

  Before the water-absorbing treatment material 1 absorbs the liquid, the colored plastic 14 in the granular core portion 10 is hidden by the coating layer portion 20. On the other hand, when the water-absorbing treatment material 1 absorbs the liquid, as shown in FIG. 2, the portion 20 a of the coating layer portion 20 is broken, so that the colored plastic 14 in the granular core portion 10 is broken from the broken portion 20 a. The color is revealed. That is, the granular core portion 10 is exposed at the cracked portion 20a of the covering layer portion 20, and the color of the colored plastic 14 is directly exposed from there.

  The effect of the water absorption processing material 1 is demonstrated. In the water-absorbing treatment material 1, when the liquid is absorbed, a portion 20 a of the coating layer portion 20 is broken, and the color of the colored plastic 14 in the granular core portion 10 is exposed from the broken portion 20 a. By coloring in this way, the user can easily determine whether or not the water absorption treatment material 1 has been used. Further, since the color of the plastic 14 colored in advance is revealed, the water-absorbing treatment material 1 that develops color after use can be obtained without adding a coloring material. For this reason, the water-absorbing treatment material 1 that can be easily distinguished before and after use can be realized without increasing the manufacturing cost.

  In addition, since the color of the colored plastic 14 is exposed directly from the cracked portion 20a of the coating layer portion 20, it is easier to visually recognize than when it is exposed through the coating layer portion 20. Thereby, the discrimination before and after use of the water-absorbing treatment material 1 can be easily and reliably performed.

  Before the water-absorbing treatment material 1 absorbs the liquid, the colored plastic 14 in the granular core portion 10 is concealed by the coating layer portion 20, so that the color change of the water-absorbing treatment material 1 before and after use becomes significant. Thereby, the discrimination before and after use of the water-absorbing treatment material 1 can be easily and reliably performed.

  Moreover, fluff pulp 12 obtained by classifying sanitary products is used as the core material. Thereby, since core part material can be acquired from the waste material of sanitary goods, the procurement cost of material can be reduced and the manufacturing cost of the water absorption processing material 1 can also be reduced by extension. In particular, since the fluff pulp 12 obtained by classifying sanitary goods is used as the main material of the granular core part 10, the effect of reducing the procurement cost of the material becomes remarkable.

  When the weight ratio of the colored plastic 14 to the fluff pulp 12 in the granular core 10 is 5% or less, the impurities in the fluff pulp 12 are reduced, so that a high-quality granular core 10 is obtained. Since the granular core part 10 is of good quality, the coating material is less peeled off during production, and the water-absorbing treatment material 1 excellent in water-absorbing performance and agglomeration function can be obtained.

  Similarly, when the weight ratio of the water-absorbing polymer to the fluff pulp 12 in the granular core 10 is 5% or less, a high-quality granular core 10 can be obtained. On the other hand, when the granular core part 10 contains a large amount of water-absorbing polymer, the water-absorbing treatment material 1 is likely to collapse from the inside due to excessive swelling of the water-absorbing polymer when absorbing liquid. Become. When such collapse occurs, there is a problem that the water-absorbing treatment materials 1 are difficult to adhere to each other and block formation is hindered, and the amount of heat generated when the used water-absorbing treatment material 1 is incinerated is increased.

  An example of the manufacturing method of the water absorption processing material 1 is demonstrated. This manufacturing method includes a granulation step, a covering step, a sizing step, and a drying step.

  The granulation step is a step of forming the granular core part 10. In this step, after water is added to the core material including the fluff pulp 12 and the colored plastic 14 obtained by classifying sanitary goods, the core material is extruded and granulated by a granulator. Thereby, the granular core part 10 is obtained.

  The covering step is a step of forming the covering layer portion 20 so as to cover the granular core portion 10. In this step, the coating material is attached to the surface of the granular core 10 using a coating apparatus or the like. The coating material can be applied, for example, by spraying or spraying. At this time, the amount of the coating material to be adhered to the surface of the granular core portion 10 is appropriately adjusted so that a part of the coating layer portion 20 is broken when the water-absorbing treatment material 1 after production absorbs the liquid. Thereby, the coating layer part 20 is obtained.

  The sizing step is a step of sizing so that the dimensions of the water-absorbing treatment material become a predetermined standard. In this step, only the water-absorbing treatment material satisfying the predetermined standard is extracted by passing the water-absorbing treatment material produced in the previous step through a sieve having a sieve with a predetermined size.

  The drying step is a step of drying the water-absorbing treatment material extracted in the previous step with a dryer. By appropriately adjusting the moisture content of the granular core 10, it is possible to prevent moisture in the granular core 10 from transitioning to the coating layer 20 and deteriorating the water absorption performance, and to prevent mold and the like during storage of the water-absorbing treatment material 1. Can be prevented. Thus, the water absorption treatment material 1 is obtained.

DESCRIPTION OF SYMBOLS 1 Water absorption processing material 10 Granular core part 12 Fluff pulp 14 Colored plastic 20 Coating layer part 20a The cracked part of the coating layer part

Claims (6)

A waste treatment material that absorbs cat waste ,
A granular core containing the fluff pulp obtained by classifying a sanitary product including fluff pulp, a colored plastic and a water-absorbing polymer, and the colored plastic;
Covering the granular core part, and comprising a coating layer part made of a mixture of the fluff pulp and the water-absorbing polymer obtained by classifying the sanitary goods ,
When the excreta treating material absorbs the excrement, by a portion of the covering layer portion is cracked, characterized in that from the part, the color of the colored plastic in the granular core section is Roken excretion Material treatment material . In the excrement disposal material according to claim 1,
The fluff pulp is an excrement disposal material that is a main material of the granular core. In the excrement disposal material according to claim 1 or 2,
The excrement disposal material whose weight ratio with respect to the fluff pulp in the granular core of the colored plastic in the granular core is 5% or less. In the excrement disposal material according to any one of claims 1 to 3 ,
The front Symbol granular core section, the water-absorbing polymer are contained,
The excrement processing material whose weight ratio with respect to the said fluff pulp in the said granular core part of the said water absorbing polymer in the said granular core part is 5% or less. The excrement disposal material according to any one of claims 1 to 4,
The excrement disposal material whose thickness of the above-mentioned covering layer part is 0.5 mm or less. In the excrement disposal material according to any one of claims 1 to 5,
Before the said excrement disposal material absorbs the said excrement , the said colored plastic in the said granular core part is the excrement disposal material hidden by the said coating layer part.

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