JP2002080289A - Bag for composting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag for composting which is excellent in handling property and capable of controlling water without intrusion of a raindrop. SOLUTION: The bag for composting comprises the cylindrical bag body made of a gas-permeable material, a lid which is opened and closed freely and made of the gas-permeable material, and a cover sheet which covers the lid. The cover sheet has a number of pores which does not permeate a water drop, but a water vapor and is joined with the lid on the straight line going through the center of the lid. The cover sheet is substituted for the lid in some cases. Diameter of the cover sheet, whose hanged-out part works as eaves, is larger than that of the bag body. Another cover sheet does not permeate water and several pores run through the sheet in its direction of depth. The large pore is arranged in the center of the sheet, while a plurality of smaller pores are arranged radially and concentrically from the center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composting bag for composting agricultural and livestock wastes such as foliage and weeds, and a technique for promoting composting of raw manure by leaving it outdoors. It is.

[0002]

Conventionally, branches and leaves, weeds, and the like, which are industrial wastes of agriculture and livestock industry, have been used as fertilizers by utilizing the natural decomposition power. A composting bag for producing such a fertilizer generally comprises a cylindrical bag body and an upper lid that can be opened and closed with respect to the bag body, and furthermore, the material is entirely made of a mesh or the like having air permeability. Have been. This is because composting of agriculture and livestock waste, which is raw manure, is due to the decomposition of microorganisms existing in nature, and it is necessary to maintain air permeability inside the bag to promote fermentation.

FIG. 5 shows an example of a conventional composting bag, wherein 1 is a bag body, 2 is an upper cover of the bag, and 3 is a fastener for opening and closing the upper cover 2. After putting raw manure, 1
Leave to ripen by leaving outdoors for about several months, and take out and use the compost.

By the way, in order to ripen the raw manure properly, in addition to the above-mentioned air permeability, an appropriate amount of moisture is required.
In a dry state, this can be solved by spraying water over the composting bag, but in the season such as the rainy season, the maturation does not properly promote due to excessive moisture, which is inconvenient. In order to solve such a problem, during heavy rain, a composting bag is moved under eaves or the like, or a water-resistant sheet is put on the composting bag. However, the composting bag after the input of the raw manure is relatively heavy, and it is difficult to move the composting bag. In addition, covering the water-resistant sheet in the rain has a problem of poor workability.

[0005] In order to solve this problem, the inventor has disclosed a structure in which the upper lid can be easily opened and closed (Japanese Patent Application No. 200/200).
0-82574). In this structure, the diameter of the upper lid is sewn to the bag body, and both sides can be opened and closed separately, so that the opening can be quickly shielded even in the case of rain, Even when adjustment is required, the upper lid can be opened separately on the left and right, which is convenient.

[0006] The present invention discloses a composting bag which further advances the technique developed by the inventor and is more convenient, and which can adjust the moisture content without dripping raindrops inside.

[0007]

In order to achieve the above-mentioned object, the present invention provides a tubular bag body made of a breathable material and a breathable material provided to be openable and closable with respect to the bag body. And a shielding sheet covering the upper cover. And this shielding sheet is claim 1
In No. 3, a structure having a large number of holes through which water vapor does not pass while water droplets do not pass, and a means of being joined to the upper lid in a straight line passing through the center was used. In the means in which the shielding sheet also serves as the upper lid, the means of being joined to the upper lid in a straight line is omitted. In this configuration, the shielding sheet protects the internal compost from rainwater while performing the function of moisture control.

[0008] Further, the shielding sheet employs a means also serving as the upper lid, so that the upper lid having, for example, a mesh structure is omitted. Furthermore, the shielding sheet is larger than the diameter of the bag body, and by using the protruding portion as an eave, it is possible to cope with rainfall obliquely to some extent.

As another means, a tubular bag body made of a breathable material, an upper cover made of a breathable material provided to be openable and closable with respect to the bag body, and a shielding sheet covering the upper cover are provided. Although the same is true, a means is used in which the shielding sheet is impermeable to water and a plurality of holes penetrate in the thickness direction. In this means, the hole functions as an appropriate supply of moisture to the inside at the time of rainfall, and at the same time, at the time of fine weather, the function of evaporating the inside moisture from the hole to release extra moisture.

The holes provided in the shielding sheet have a large hole at the center and a plurality of small holes around the center. In the means, water is supplied to the inside from the large hole at the center, and water vapor is supplied through the plurality of small holes. Performs the function of releasing into the atmosphere. The means for providing the plurality of small holes radially and concentrically from the center performs a function of uniformly discharging water vapor.

[0011]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the present invention, wherein 1 is a cylindrical bag body made of a breathable material, 2 is an upper lid made of a breathable material provided on the bag body 1 so as to be openable and closable. Reference numeral 3 denotes a fastener for opening and closing the bag body 1 and the upper cover 2, reference numeral 4 denotes a shielding sheet for covering the upper cover 2, and reference numeral 5 denotes a line for joining or stitching the upper cover 2 and the shielding sheet 4 together at these diameters. It is.
The specific configuration of the shielding sheet 4 is made of synthetic resin fibers having a very fine mesh, and water having a large diameter such as raindrops that is likely to enter from the outside in the shielding sheet 4 is sufficiently larger than the size of the mesh. In order to prevent this, water having a very small diameter such as water vapor is sufficiently smaller than the size of the mesh, so that a material that allows the water to pass through is adopted. More specifically, Gore-Tex (trade name) is preferable. Then, according to this structure, when the shielding sheet is wound along the line 5 in fine weather, the upper lid 2 is exposed, so that excess moisture in the compost passes through the upper lid 2 and is released into the atmosphere. On the other hand, in the case of rainy weather, even if it is rained directly by spreading the shielding sheet 4, the raindrops do not pass through the shielding sheet 4, so that excessive moisture does not enter the compost. Furthermore, when the rain has ended,
Even if the user forgets to fold the shielding sheet 4, if the moisture inside the bag body 1 starts to evaporate, the water vapor passes through the shielding sheet 4 and is released to the atmosphere. Undesirable spoilage can be avoided.

The shielding sheet 4 may have the same size as the upper lid 2 as shown in FIG. 1, but may have a configuration in which the shielding sheet 4 is larger than the upper lid 2 and has an eave 6 as shown in FIG. is there. In this case, even when the amount of rainfall is large or rain falls obliquely due to the wind, the upper opening portion is sufficiently shielded from rainfall. In addition, as shown in FIG. 3, hooks 7 are provided at several locations around the shielding sheet and hooked on the mesh of the bag body 1 to prevent the shielding sheet 4 from being turned up by strong wind.

In the embodiment shown in FIG. 1, the shielding sheet 4 is placed on the outer side of the upper lid 2, but the upper lid 2 itself is made of a material such as Gore-Tex which does not allow water droplets to pass therethrough but water vapor. Sometimes the material is used.
In this case, it is not necessary to sew the upper cover 2 and the shielding sheet 4 together, and the fastener 3 allows the bag body 1 to be freely opened and closed.

FIG. 4 shows a shielding sheet according to a second embodiment of the present invention, and other structures such as the bag body 1 are the same as those in FIG. In the drawing, reference numeral 10 denotes a shielding sheet made of a water-impervious cloth such as tarpaulin or a synthetic resin sheet, and a number of holes 11 penetrate in the thickness direction. The hole 11 has two sizes, a large hole 11a and a small hole 11b. In this embodiment, the arrangement of the large holes 11a is one at the center, and the arrangement of the small holes 11b is provided in a total of 32 radially and three-stage concentrically from the center. The size of the large hole 11a is such that the diameter of the bag body is about 1
The diameter is about 10 mm assuming 100 mm, and the size of the small hole 11b is about 5 mm under the same conditions. According to this configuration, since the shielding sheet 10 sewn to the upper lid 2 is provided with a large number of holes, when the weather is fine, the water vapor is released from the holes 11 into the atmosphere, so that the humidity can be adjusted. On the other hand, in the rainy weather, the shielding sheet 10 can prevent a large amount of rain from flowing into the bag body 1 and
Since a suitable amount of water is dripped from the large hole 11a, the water content is adjusted. Also, the rain that has fallen on the shielding sheet 10 spreads on the surface of the small holes 11b, but does not flow much into the bag body 1 from the small holes 11b due to the surface tension of water.
That is, these holes 11 supply an appropriate amount of water and evaporate.

The arrangement of the holes 11 shown in FIG. 4 is merely an example, and the size, arrangement and number of the holes 11 may be changed. By the way, since the shielding sheet 10 itself replenishes moisture and evaporates,
There is no need to open and close this depending on the weather as in the conventional example. Therefore, it is sufficient that the shielding sheet 10 is sewn to the upper lid 2 around the entire periphery as the suture line 12. further,
It is also possible to omit the upper cover 2 and use the shielding sheet 10 as the upper cover 2.

Also in the second embodiment, as shown in FIG. 2, it is possible to form the eaves by making the shielding sheet 4 larger than the diameter of the bag body 1, and in that case, the first embodiment It goes without saying that an effect similar to that of the eaves in the form is produced.

[0017]

As described above, according to the present invention, the water content of the compost material stored in the bag can be adjusted without complicated work, and a high-quality compost can be manufactured. In particular, in the invention of claim 4, since the large and small holes are arranged so as to penetrate the surface of the shielding sheet, the large holes are used to supply water during rainy weather, and the small holes are used to discharge excess moisture inside as atmospheric water vapor to the atmosphere. It can be released, and appropriate humidity can be maintained with only a simple configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a composting bag of the present invention.

FIG. 2 is a perspective view showing a modification of the embodiment.

FIG. 3 is a perspective view showing a further modified example.

FIG. 4 is a perspective view showing a shielding sheet according to a second embodiment.

FIG. 5 is a perspective view showing a conventional composting bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag main body 2 Top lid 3 Fastener 4 Shielding sheet 5 Line for joining or sewing together 6 Eaves 7 Hook 10 Shielding sheet 11 Hole 11a Large hole 11b Small hole 12 Suture line

Claims (6)

[Claims] 1. A tubular bag body made of a breathable material, an upper lid made of a breathable material provided to be openable and closable with respect to the bag body, and a shielding sheet covering the upper lid. A composting bag having a structure having a large number of holes through which water droplets do not pass and water vapor passes, and which is joined to the upper lid in a straight line passing through the center. 2. The composting bag according to claim 1, wherein the shielding sheet doubles as an upper lid. 3. The shielding sheet is larger than the diameter of the bag body,
The composting bag according to claim 1 or 2, wherein the protruding portion is an eave. 4. A cylindrical bag body made of a breathable material, an upper lid made of a breathable material provided to be openable and closable with respect to the bag body, and a shielding sheet covering the upper lid. Is a non-water-permeable and has a plurality of holes penetrating in a thickness direction thereof. 5. The composting bag according to claim 4, wherein the holes provided in the shielding sheet are a large hole at the center and a plurality of small holes around the large hole. 6. The composting bag according to claim 5, wherein the plurality of small holes are provided radially and concentrically from the center.