JP2003134932A - Molded product mixed with compost and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a molded product mixed with compost having excellent moldability, producible in large quantities and hardly putrefying without decreasing the amount of fertilizer component and to provide a method for producing the molded product. SOLUTION: This molded product is obtained by including compost, clay and a binder and drying the resultant product. Alternatively, the product is obtained by adding water to compost, clay and a binder followed by kneading them together, molding the kneaded product by a mechanical potter's wheel-type molding method and drying the resultant product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compost-incorporated molded article obtained by molding compost with clay and a method for producing the same.

[0002]

2. Description of the Related Art Heretofore, as a molded article obtained by molding compost, there has been known a pot-shaped molded article obtained by mixing fully-ripened compost with wheat flour and starch as a binder and molding the mixture under pressure. Since this molded product contains the fertilizer component, it is not necessary to apply fertilizer, and seedlings can be raised just by watering.

[0003]

However, since wheat flour and starch as a binder used in this molded article have low tackiness, molding of the molded article is difficult and mass production is difficult. If the amount of the binder is increased to improve the formability, the proportion of compost (fertilizer component) will decrease. In addition, the flour and starch used as a binder,
If it absorbs water during application, it oxidizes and decomposes, producing a foul odor. Therefore, it is an object of the present invention to provide a compost-mixed molded product which has good moldability and can be mass-produced without reducing the amount of fertilizer components and is resistant to putrefaction, and a method for producing the same.

[0004]

[Means for Solving the Problems] In order to solve the above problems, the inventors of the present invention have as a result of earnest research, and as a result, clay contains potassium or the like as a fertilizer component and does not oxidize and decompose.
The present inventors have completed the present invention by finding that if clay is used, the moldability is good and that mass production by a mechanical lathe molding method is also possible. That is, the compost-mixed molded article according to the present invention is characterized by containing compost, clay, and a binder, and drying the compost. Further, the method for producing a compost-containing molded article according to the present invention is characterized in that water is added to compost, clay and a binder, and the mixture is kneaded, and the resulting kneaded product is molded by a mechanical lathe molding method and then dried. I am trying.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described more specifically below. The main components of the compost-mixed molded product according to the present invention are compost and clay. Compost is made from raw garbage, livestock manure,
It is a fertilizer made by aerobically fermenting organic waste such as sewage sludge. Of these, compost obtained from raw garbage is preferable because it has a weak odor. Particle size of compost at the stage of manufacturing raw material is 4mm
The following are preferred. If it is larger than this, the moldability becomes poor.

Clay is widely used as a raw material for ceramics, and for example, clay mixed for flower pots is used. Clay contains fertilizer components such as potassium and calcium, and even if it contains a considerable amount of clay, the molded product is not manufactured by baking, so it is useful as a fertilizer component.

The compost-mixed molded product of the present invention contains a small amount of binder in addition to the above-mentioned main components of compost and clay. Here, as the binder used, gum arabic,
Those derived from natural products such as carboxymethyl cellulose (CMC) and starch paste are preferred. Since the compost-comprising molded article according to the present invention is obtained by solidifying and drying compost with clay, and is not baked and solidified like ceramics, clay tends to collapse when water is applied during application. The binder plays a role in preventing the collapse of the clay and increasing the strength of the molded body. The addition amount of the binder varies depending on the type of compost or clay and the mixing ratio thereof, but is preferably about 1 to 10% by weight with respect to the total amount of compost and clay. If the amount of the binder added is too small, the strength of the molded product will be insufficient, while if it is too large, the fertilizer content will be reduced accordingly.

The compost-mixed molded product according to the present invention is commercially available, for example, as a pot-shaped molded product, and is dried. Since this pot-shaped molded product is in a dry state, it is suitable for raising seedlings on the ground surface and can be used in the same way as a conventional flower pot.
And there is no need for fertilization. The shape of the molded body is arbitrary,
In addition to the above pot-shaped molded products, rod-shaped molded products, plate-shaped molded products and the like can be mentioned. Among them, the pot-shaped molded product can be mass-produced by the mechanical lathe molding method. The pot-shaped molded product is suitable for raising seedlings, the rod-shaped molded product is suitable for additional fertilization, and the plate-shaped molded product is suitable for nursery beds.

Next, a method for manufacturing a compost-containing molded body according to the present invention will be described by taking a case of manufacturing a pot-shaped molded body as an example. In each case, water is added to dry granular compost, powdery clay, and a binder, and the mixture is kneaded by a kneader, and the obtained kneaded product is formed into a pot shape by a mechanical lathe (roller machine).
Immediately before releasing from the mold, 20 to 3 at 60 to 80 ° C
Heat for 0 minutes. Due to this heating, the surface of the molded product is dried and contracted, which facilitates mold release. Also, the adhesive strength of the binder increases. Then, release the mold to open a water hole in the bottom, and
Heat-dried for about 8 hours or naturally dried for 1 to 2 days to obtain a pot-shaped molded body as shown in the sectional view of FIG.

[0010]

The following is a more detailed description of the present invention. The scope of the present invention is not limited by the following examples.

Dry compost 11 obtained by fully fermenting raw garbage
00kg, fine powder 900kg, powdered CMC 20k
g, 1000 kg of water was added to 20 kg of powdered gum arabic and kneaded with a kneader to obtain a kneaded product, which was molded into a bowl with a mechanical lathe and was heated at about 80 ° C. immediately before releasing from the mold. After heating for 1 minute, the mold was released, water holes were opened in the bottom of the pot, and heat-dried at 60 ° C for 8 hours to form 850 g of so-called 6-inch bowl and 1,2-kg 7-inch bowl. Many products were manufactured. Here, in the 6-inch bowl, in FIG. 1, the inner diameter D ₁ of the upper opening is 18 cm, and the inner diameter D of the bottom is D.
₂ was 13.5 cm, the depth H was 14.4 cm, the peripheral wall of the upper opening had a wall thickness of 8 mm, and the other peripheral walls had a wall thickness of 5 mm. In addition, for the 7-inch bowl, the above D ₁ is 21 cm and D ₂ is 1.
6 cm, H was 16.8 cm, and the wall thickness of the peripheral wall was the same as the No. 6 pot.

[0012]

As described above, according to the compost-mixed molded product of the present invention, since it contains clay for enhancing the moldability, the moldability is good, mass production is possible, and it is difficult to rot. . Further, since the clay component contains fertilizer components such as potassium, the fertilizer content does not decrease significantly even if a considerable amount of clay is contained. Further, according to the method for producing a compost-incorporated molded article of the present invention, mass production by a mechanical lathe molding method becomes possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a pot-shaped molded body.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuji Uejima             2-12-5 Kodai, Matsumoto City, Nagano Prefecture (72) Inventor Toru Suzuki             6-13-14 Aoinishi, Hamamatsu City, Shizuoka Prefecture (72) Inventor Eiichi Okumura             161 Mizukubo, Susono City, Shizuoka Prefecture F-term (reference) 2B022 BA02 BA13 BB02                 4H061 AA01 AA02 CC47 DD20 EE02                       EE43 EE70 GG19 GG25 GG42

Claims (2)

[Claims] 1. A compost-mixed molded article, which comprises compost, clay, and a binder and is dried. 2. A method for producing a compost-mixed molded product, which comprises adding water to a compost, clay, and a binder, kneading the mixture, molding the resulting kneaded product by a mechanical lathe molding method, and then drying.