JP6361031B1 - Method for producing dried sawdust and method for producing cat sand - Google Patents

Abstract

The present invention provides a method for obtaining dried sawdust or cat sand having a high utility value containing a large amount of phytoncide. A method for producing dried sawdust is a method for producing dried sawdust by drying sawdust generated from a raw tree, and is provided in a dry box 22 having water absorption and breathability. First drying step to obtain primary dried sawdust (sawdust 20) by leaving the powder 20 to dry naturally with sunlight, and primary dried sawdust (sawdust 20) And a secondary drying step in which dried sawdust (mixture 40) is obtained by artificial drying without heating. [Selection] Figure 1

Description

  The present invention relates to a method for producing dried sawdust and a method for producing cat sand.

  As a conventional cat sand and its manufacturing method, there exists a thing of the following patent document 1, for example. This is because tea husk, which is a waste product after producing green tea, is used as the main component, and has a flavonoid effect, which is advantageous in terms of deodorizing power, bactericidal power, water absorption, and economical efficiency, and is lightly incinerated. It is intended to contribute to the prevention of environmental pollution, etc., and is mainly composed of tea husks that are roughly crushed after drying and aligned to a certain size, and this is pure plant-based crushed material In addition, the binder and the water-absorbing agent are mixed and dried after being shaped or fired.

  By the way, in recent years, forest baths have attracted attention and are said to have healing and relaxing effects. In the forest, essential oil components (forest bath components) such as phytoncide are volatilized and emitted from plants, and it is said that plants have a bactericidal action and an air cleaning action to protect themselves. In addition, humans can expect a forest bathing effect such as a relaxed feeling by inhaling them, but it is thought that these forest bathing effects can also be expected for pets such as cats. As a result, it is preferable to use natural materials such as wood that can obtain the effects of phytoncide rather than resins for various pet tools, and the same applies to cat sand.

JP-A-6-7051

  In the background art described above, an example using sawdust is shown, but the flavonoid effect by tea husk is mainly, and it does not pay attention to the forest bath effect (that is, the effect of phytoncide).

  The present invention focuses on the above points, and its purpose is to produce a dry sawdust with a high utility value containing a large amount of phytoncide, and a large amount of phytoncide. It is providing the manufacturing method of cat sand which manufactures cat sand with high utility value. In addition, according to the dried sawdust obtained by the dried sawdust manufacturing method and the cat sand obtained by the catsand manufacturing method, antibacterial effect, deodorizing effect, healing effect or relaxing effect on pets are also expected by phytoncide. it can.

  (1) The present invention is a method for producing dried sawdust by drying sawdust produced from a raw tree, wherein the sawdust is left in a container having water absorbency and air permeability. A primary drying step of obtaining primary dried sawdust by lightly drying with light, and a step of obtaining the dried sawdust by manually drying the primary dried sawdust without heating. A method for producing dried sawdust, comprising: a secondary drying step.

  (2) The present invention is also characterized in that the second drying step is a step of mixing the first dried sawdust with dried sawdust. It is a manufacturing method of powder.

  (3) The present invention is also the method for producing dried sawdust according to (2) above, wherein the sawdust is generated from conifers.

  (4) In the present invention, the secondary drying step is a step of bringing the primary dry sawdust into contact with a water-absorbing material. It is a manufacturing method.

  (5) The present invention is also the method for producing dried sawdust according to (1) above, wherein the secondary drying step is a step of performing vacuum drying.

  (6) The present invention is also the method for producing dry sawdust according to any one of the above (1) to (5), wherein the sawdust is produced from a conifer.

  (7) The present invention is also the method for producing dried sawdust according to any one of (1) to (6) above, wherein the container is a wooden box using cedar.

  (8) The present invention is also a method for producing cat sand from the dried sawdust obtained by the method for producing dried sawdust according to any of (1) to (7) above, It is a manufacturing method of the cat sand characterized by including the solidification process of solidifying the said dried sawdust which made the moisture content 20% or less in the secondary drying process.

  According to the method for producing dried sawdust and the method for producing cat sand according to the present invention, it is possible to obtain dry sawdust or cat sand having a high utility value containing a large amount of phytoncide, which is eventually discarded. Can make effective use of powder.

  Further, according to the method for producing dried sawdust and the method for producing cat sand according to the present invention, the effects such as antibacterial effect, deodorizing effect, healing effect or relaxing effect on pets can be maximized.

It is a figure which shows the main processes of the manufacturing method of the cat sand in the Example of this invention. It is a figure which shows the mode of the water absorption of the cat sand in the Example of this invention.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples. In addition, in this specification, the term “sawdust” is defined to include the meaning of “cutting tip” in addition to the original meaning of “sawdust”. The “cutting tip” is a term including “sawdust” and “pulverized tip”.

  The main raw material of the present invention, sawdust (original sawdust) comes out in large quantities at the site where raw wood and raw wood are sawed, but contains a large amount of water, so it has not been used so far and discarded. At best, it was taken over to the ranch and so on, and became a bedding for livestock farmers (for example, a cow bed). For example, in the case of cedar, the water content of standing trees is said to be 300% at maximum. If we can dry this high-moisture undried sawdust quickly and in large quantities at low cost, it will be useful as sand for pet toilets, etc. The drying method is difficult. Moreover, although it can also heat and dry artificially, forest bath components, such as a phytoncide, will flow out by artificial heating, and an active ingredient will be lost. The inventor of the present invention pays attention to how the sawdust is dried to increase the utility value, and further, by using the dried sawdust as cat sand, the resource can be effectively used. It is a thing.

According to the present example, undried sawdust (original sawdust) is naturally dried (primary drying step) and non-heated artificial drying (secondary drying) by the following method. Step) is performed.
(1) Put the sawdust in a “cedar box” and store (leave). That is, in this primary drying step, primary dried sawdust is obtained by allowing the sawdust to stand in a water-absorbing and breathable container and naturally drying with sunlight. Cedar is the most porous of trees and has a high humidity control effect. For this reason, if the humidity of the atmosphere is high, the moisture is sucked in, and if the atmosphere is dried, the function of exhaling its own moisture is excellent. Therefore, when sawdust is put in a box made of cedar, the box absorbs moisture of sawdust and the sawdust can be dried. The natural drying in the primary drying step is preferably performed in a place where there is a breathability to which sunlight hits, and more preferably in a vinyl house equipped with air conditioning equipment such as exhaust. The “cedar box” is merely a good example of a container having water absorption and breathability, and another container having water absorption and breathability may be used instead of the “cedar box”. In the present invention, a container having air permeability refers to a container having at least an opening and not sealed.
(2) First dry sawdust is mixed (blended) with dried sawdust. That is, in this second drying step, the first dried sawdust is artificially dried without heating to obtain dried sawdust (= first dried sawdust + dried sawdust). By mixing with dried sawdust, the moisture in the first dried sawdust is absorbed by the sawdust, and the first dried sawdust is dried. For example, while sucking the primary dry sawdust and sawdust with a powerful fan, both are agitated and mixed, and the mixture is sucked with a dust collector. In this way, the primary dry sawdust and sawdust can be agitated and mixed in a strong air swirl like a tornado, so it is possible to achieve agitation / mixing more than blowing air with a dryer. , Drying can be accelerated, and the primary dried sawdust can be dried efficiently in a short time. The unheated artificial drying in the secondary drying step is realized by mixing the primary dried sawdust with the dried sawdust, but is not limited thereto. That is, unheated artificial drying in the secondary drying step may be realized by bringing the primary dry sawdust into contact with a water absorbing material (for example, a water absorbing polymer), or vacuum drying is performed. It may be realized. When the primary dried sawdust is brought into contact with the water absorbent, the water in the primary dried sawdust is absorbed by the water absorbent by mixing the primary dried sawdust with the water absorbent. Next dried sawdust is dried. For the mixing in this case, the same method as that for mixing with sawdust can be employed. After mixing with the water-absorbing material, the water-absorbing material that has absorbed the moisture in the primary dry sawdust is separated and removed from the primary dry sawdust to obtain dry sawdust. When vacuum drying is performed, the inside of the tank containing the primary dry sawdust is evacuated or depressurized to lower the boiling point of the moisture in the primary dry sawdust and the primary dry sawdust Promotes the evaporation of moisture in the powder to obtain dry sawdust.
(3) In addition, the following steps may be added. A spiral pipe of galvanized steel sheet is piped on the roof, etc., and the inside is dried by sunlight and wind by moving undried sawdust back and forth by air conveyance. Solar heat can be used effectively.

  By using the method for promoting drying of undried sawdust as described above, drying can be shortened and dry sawdust containing the maximum amount of forest bath components such as phytoncide can be obtained, and the utility value of sawdust Can be increased.

Among the coniferous trees that are considered to have a high forest bathing effect, cedar is used in this embodiment, and the sawdust is used as a main raw material, and sawdust is mixed and used as an auxiliary raw material for promoting drying. Advantages of using cedar include the following.
(1) The method of maximizing the use of phytoncide, a naturally derived forest bath component, is natural drying as described above.
(2) Conifers have more phytoncides than hardwoods.
(3) As the efficacy of phytoncide, bactericidal effect, air purification, NK cell activity effect, improvement of immunity, etc. have been confirmed.
(4) Among them, cedar phytoncide has a high sedative effect (relaxation effect).
(5) Also, cedar phytoncide has been confirmed to have high antitumor activity (anticancer effect) in mouse experiments.
(6), Cedar is one-porous wood and has high water absorption and humidity control effects, so it has excellent water absorption and quick drying.

  By using such dried cedar as sand for pet toilets, such as cat sand, it is harmless and additive-free, and has high water absorption and keeps it dry quickly, eliminating odors with a bactericidal effect. In addition, the natural fragrance can improve the indoor environment, and it can provide excellent functionality such as easy disposal and various effects due to the active ingredient of phytoncide. Hereinafter, a description will be given with reference to FIG.

  As shown in FIGS. 1 (A) to (C-1), the sawdust (including wood flour) 20 is obtained from undried raw wood (log or raw wood) 10 obtained by cutting a standing cedar tree. It is a powder that is produced when lumber is obtained by lumbering, and has a high moisture content in an undried state, and has not been effectively used in the past. However, the cedar cells remain without being destroyed, the wood has a strong scent, and contains a large amount of forest bath components such as phytoncide. In the first drying process, the sawdust 20 is placed in a drying box 22 using, for example, cedar (see (C-2) in the figure), and is naturally dried by sunlight (sunlight and wind). Is called. When heated and artificially dried, the cells of the sawdust 20 are destroyed and the forest bath components flow out, so natural drying is performed in this embodiment.

  On the other hand, timber-dried timber 12 (see (D-1) in the figure) is naturally dried by the sun (sun and wind) by, for example, a method of forming a gap between the timbers 12 (same as the sun and the wind) (See Figure (D-2)). Next, when the naturally dried wood 12 is shaved (see (D-3) in the same figure), dried sawdust (or sawdust chips) 30 is obtained (see (D-4) in the same figure). Thus, the sawdust 30 is also naturally dried, so the cedar cells remain without being destroyed, the fragrance of the tree is strong, and there are a lot of forest bath components such as phytoncide, Even if it is an auxiliary material, do not use the one with a large amount of active ingredients such as phytoncide spilled by an artificial drying method.

  Since the sawdust 20 is abundantly present at the processing site and is processed as waste, it is possible to effectively use resources by using these. In addition, if the sawdust 30 is a site where building materials and furniture materials are processed using naturally dried wood, the sawdust 30 is also discharged as a result of polishing or shaving and processed as waste. By using this, resources can be effectively used. However, since natural dry wood is rarely used for building materials and furniture materials in recent years, it cannot be said that it is abundant.

  Next, in the secondary drying step, the main raw material sawdust (primary dry sawdust) 20 and the secondary sawdust 30 obtained by natural drying as described above are shown in FIG. As shown, mixing and stirring speeds drying of the main raw material sawdust (primary dry sawdust) 20 (shortens the time for lowering the moisture content). The mixing / stirring may be performed in any way as long as the active ingredient such as phytoncide does not flow out. For example, sawdust (primary dry sawdust) 20 and sawdust in the manner of air-type dust collection. It is preferable to suck 30 and perform stirring. At that time, it is ideal to stir and mix the primary dried sawdust and sawdust in a strong spiral of air such as a tornado with an air cut blower or the like. Thereby, primary dry sawdust and sawdust can be reliably stirred and mixed. In this manner, a mixture (dried sawdust) 40 obtained by mixing and stirring naturally dried sawdust (primary dried sawdust) 20 as a main raw material and naturally dried sawdust 30 as a subsidiary material is obtained. (See (F) in the figure).

  Next, in the solidification step, the mixture (dry sawdust) 40 of sawdust (primary dry sawdust) 20 and sawdust 30 is hardened and solidified by a pelletizing machine or the like (see FIG. G)), a solid material (for example, pellets or granules) 42 is obtained (see FIG. 5H). The mixing ratio of sawdust (primary dry sawdust) 20 and sawdust 30 at this time is adjusted so that the moisture content (weight moisture content) of the mixture (dry sawdust) 40 is 20% or less. Is done. This is because if it exceeds 20%, it cannot be solidified and solidified. However, there is no such inconvenience when the mixture (dried sawdust) 40 is used without being solidified. Although depending on the degree of drying, when the volume ratio is about sawdust (primary dry sawdust): sawdust = 1 (20%): 4 (80%), the water content is 10-13. %. Therefore, generally, when the sawdust is 50% or more by volume, the water content of the mixture (dried sawdust) 40 can be 20% or less. In addition, non-heated artificial drying in the secondary drying step is realized by bringing the sawdust (primary dry sawdust) 20 into contact with the water-absorbing material or by vacuum drying. In such a case, the dried sawdust consisting only of sawdust is hardened and solidified to obtain a solid. In this case, the moisture content (weight moisture content) of the dried sawdust itself is adjusted to 20% or less.

  In addition, the naturally dried sawdust (primary dried sawdust) 20 and sawdust 30 contain natural lignin and cellulose, which act as a binder when solidified, so that Since it is not necessary to prepare an artificial binder, a compound zero (100% non-added) cat sand solid (for example, cat sand pellets or cat sand granules) can be produced.

  The cat sand 42 obtained by solidifying the mixture (dried sawdust) 40 of sawdust (primary dry sawdust) 20 and sawdust 30 obtained as described above is as shown in FIG. It is spread in the pet toilet 50 at an appropriate depth. When the cat NK urinates or defecates, the water is quickly absorbed into the cat sand 42, and the cat sand 42 containing the water breaks down into powder, expands by uncompressing, and increases in volume. Therefore, the amount used can be reduced and the compression can be released, so that the volatility of the phytoncide is increased, and an effective action such as a deodorizing effect can be obtained more than the solid state. In addition, the term “cat sand” in this specification is defined by a broad concept including “feces and urine treatment materials for all pet animals (dogs, etc.)” in addition to the original meaning of “cat sand”.

  FIG. 2 shows the state of moisture absorption by the cat sand according to the present example. 30 g of water is added to 50 g of cat sand, and the states after 10 seconds, 20 seconds, and 30 seconds are shown. Yes. Immediately after the water is added, as shown in the same figure (A), the solid matter is wet and discolored, but after 10 seconds, as shown in the same figure (B), the shape of the solid substance is broken. Moisture is absorbed. After the elapse of 20 seconds, moisture absorption has further progressed as shown in FIG. (C), and after 30 seconds, the moisture has been almost absorbed as shown in FIG. The shape is further broken. Thus, according to the cat sand of the present embodiment, moisture absorption is also performed well.

  Thus, according to this example, the cedar cat sand has a high absorbency and quick-drying function, so that urine can be quickly absorbed and dried as cat sand and deodorized with a strong sterilizing power. Since the sawdust 20 and sawdust 30 are naturally dried and mixed, forest bath components such as phytoncide remain abundantly, and they volatilize to prevent antibacterial activity. It can also be expected to have an effect, antiviral effect, and deodorizing effect resulting from them, and can enhance the immunity of pets such as cats, and can contribute to the promotion of health by obtaining healing and relaxing effects.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) Wood that emits forest bath components may be cypress, in addition to cedar, and the sawdust can be dried by the method described above. In this embodiment, cedar is used as cat sand. Moreover, although the present Example demonstrated as a good example the case where the main raw material sawdust and the auxiliary raw material sawdust were cedar, this invention is not limited to this. That is, this invention is not limited to what originated from a cedar, The kind of the tree is not ask | required. However, from the viewpoint of phytoncide, conifers such as cedar and pine are preferable, and cedar is more preferable.
(2) Although the present invention is mainly intended for application to cats, it does not preclude application to animals other than cats.

  Note that, as described above, the term “sawdust” in this specification is defined to include the meaning of “cutting tip” in addition to the original meaning of “sawdust”. The “cutting tip” is a term including “sawdust” and “pulverized tip”. For this reason, the present invention can adopt a “cutting tip” generated from a raw tree as “sawdust” generated from a raw tree, and is generated from a raw tree as a “cutting tip” generated from a raw tree. You can use “sawdust”. That is, in the present invention, when “sawdust” generated from raw wood is adopted as “sawdust” generated from raw wood, “sawdust” generated from raw wood in a container having water absorption and air permeability. A primary drying step of obtaining “sawdust” (primary dried sawdust) that has been dried primarily by leaving it to dry naturally with sunlight, and the “sawdust (main raw material)” In addition, a secondary drying step of mixing with “dry sawdust (subsidiary raw material)”, which is different from this, may be included. The primary dried “sawdust” that is the main raw material contains moisture as compared with the “dried sawdust” that is the auxiliary raw material. The moisture in the primarily dried “sawdust” is absorbed by the “dried sawdust” as the auxiliary material, and the primary dried “sawdust” as the main material is dried.

  According to the present invention, sawdust is dried in a short time, and high-use sawdust containing a large amount of forest bath components such as phytoncide can be obtained, such as sawdust and sawdust discarded. Can be used effectively. In addition, since it has been decided to use naturally dried cedar sawdust as the main ingredient, there are plenty of forest bath ingredients such as phytoncide, and antibacterial, deodorant, healing and relaxing effects on pets can be expected. It is suitable as excretion sand for pet toilets such as cats.

10: Log (log)
12: wood 20: sawdust (original sawdust)
22: Drying box 30: Sawdust 40: Mixture (dried sawdust)
42: Solid (for example, pellets and granules)
50: Pet toilet NK: Cat

Claims (8)

A method for producing dried sawdust by drying sawdust produced from raw wood,
A primary drying step of obtaining primary dried sawdust by leaving the sawdust in a water-absorbing and breathable container and naturally drying with sunlight;
And a secondary drying step of artificially drying the primary dry sawdust without heating to obtain the dry sawdust, and a method for producing dry sawdust.   2. The method for producing dried sawdust according to claim 1, wherein the second drying step is a step of mixing the first dried sawdust with dried sawdust. 3.   The method for producing dried sawdust according to claim 2, wherein the sawdust is generated from coniferous trees.   The method for producing dried sawdust according to claim 1, wherein the second drying step is a step of bringing the first dried sawdust into contact with a water-absorbing material.   The method for producing dried sawdust according to claim 1, wherein the second drying step is a step of performing vacuum drying.   The method for producing dried sawdust according to any one of claims 1 to 5, wherein the sawdust is produced from coniferous trees.   The said container is a wooden box using a cedar, The manufacturing method of the dried sawdust in any one of Claims 1-6 characterized by the above-mentioned. A method for producing cat sand from the dried sawdust obtained by the method for producing dried sawdust according to claim 1,
A method for producing cat sand characterized by including a solidification step of solidifying the dried sawdust with a moisture content of 20% or less in the second drying step.