JP3376053B2 - Fiber bag-like structure for raising seedlings and method for producing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling raising pot which is used for raising seedlings of plants, and in which the knitting structure or the whole is decomposed and decomposed in the ground.

[0002]

2. Description of the Related Art Polyethylene or polyvinyl chloride molded articles are commonly used as seedling pots. Although these moldings are inexpensive, they must be removed before transplanting seedlings, which can lead to root damage. In addition, when planting a large amount of forest, it takes a lot of work. Furthermore, since it is naturally disposed of after use, the amount of plastic waste will increase, and if it is made of polyvinyl chloride, it may emit toxic gas when incinerated, which is a disadvantage to the global environment. On the other hand, the unglazed pot can be said to be a reusable seedling raising pot, but it still has to be removed before transplantation, and it is heavy and easily damaged, and there is a problem that it requires a place to put it.

The present inventors have found that a tubular structure made of fibers made of soil-rotted fiber has an improving effect on the above-mentioned problems, and have already filed an application (Japanese Patent Application No. 4-268881). This tubular structure is specifically manufactured using a small diameter circular knitting machine, but since the diameter of the circular knitting machine is fixed, there is a limit in changing the diameter of the tubular structure. That the knitted fabric is easy to wind and stretch in the circumferential direction, and because the tubular structure is made of a kind of yarn, the twisting direction or torque of the yarn There are problems in manufacturing and working such as twisting due to the above.

[0004]

The present invention solves the above problems and allows seedlings to be buried in the soil with the seedlings still in place, can be used for seedlings of various sizes, and is light and durable. An object is to provide a pot for raising seedlings and a method for producing the same.

[0005]

Means for Solving the Problems A bag-shaped structure for raising seedlings of the present invention, which has achieved the above object, is a spoiled fiber yarn in soil,
Or the diameter of the tubular part of the bag-like structure composed of soil-rotted fiber yarn and non-rotted fiber yarn is 2.0 to 10.0 inches and the length is 3.0.
It is about 20.0 inches, and the gist is that the thickness of the yarn forming the bag-shaped structure is 10 to 2500 denier. In addition, this bag-shaped structure, using a two-needle bed warp knitting machine, the opening,
It is characterized by being knitted by changing the knitting structures of the tubular portion, the front and back joint portion and the cut portion. In particular, when knitting soil rotting fiber yarns and non-rotting fiber yarns and bag-like structures,
It is preferable that a stitch is formed of non-rotting fiber yarns, the connection between the wales of the yarns is minimized, and the rotting fiber yarns are inserted between a plurality of needles to form a tubular portion.

[0006]

In the present invention, the pot for raising seedlings is provided with an opening, a tubular portion,
A bag-like structure that can be knitted at the front and back joints and the cut portion is used. Therefore, various sizes can be easily manufactured. Further, when the non-rotting fiber is used in combination for cost reduction or strength improvement, it is preferable to form the stitch with the non-rotting fiber yarn. This is because when the rotting fibers in the soil are decomposed and the knitting structure is dismantled, the non-rotting fibers are disintegrated into chain knitting. Therefore, although the non-rotting fiber remains in the soil, it does not hinder the growth of seedlings and roots.

The soil spoilage fiber thread in the present invention means a fiber which is biodegradable in the ground or on the surface. Examples of soil spoilage fibers that can be specifically used include vegetable fibers such as cotton, silk and hemp, natural fibers such as animal hair fibers such as wool and horse hair, cellulosic fibers and protein fibers, alginic acid fibers and rubber threads. Regenerated fibers or biodegradable synthetic fibers. In addition, acrylic,
Examples include polyester and nylon.

The bag-like structure of the present invention is made of one or more of the above-mentioned soil rotten fiber yarns or a warp knitted fabric composed of soil rotten fiber yarns and non-rotting fiber yarns. The diameter of the tubular part of the bag-like structure shall be 2.0 to 10.0 inches. If the diameter of the tubular part is smaller than 2.0 inches, it will be difficult to fill the soil and fertilizer, and the volume will be too small to adversely affect the growth of young trees before transplanting seedlings to the main field or until it decomposes in the soil. There is a risk of exerting it. If the diameter exceeds 10 inches, the seedling and the soil are too heavy to fill, which is not preferable in terms of handling. The length of the bag-shaped structure may be appropriately determined depending on the type of seedling and the characteristics of growing, but generally 3.0 to
20.0 inches.

The thickness of the yarn forming the bag-like structure is 10 to 25
00 denier. The yarn forming the stitch is preferably 10 to 150 denier. This is because the use of a warp knitting machine can improve the production efficiency and reduce the fabric weight. Further, the bag-shaped structure of the present invention is preferably formed entirely of soil rotting fiber yarns, but when non-rotting fiber yarns are used in combination from the viewpoint of cost and versatility, this stitch forming fiber yarn is used. It is preferably used as a strip. However, as the fiber thread to be inserted in the stitch, the rotten fiber in the soil must be used. This facilitates the knit structure to decompose in the soil. The thickness of the inserted thread shall be 100 to 2500 denier. It is not preferable to use a thread having an insertion thread thinner than 100 denier, because the decomposition time of the fiber may be decomposed too quickly and decomposed during the seedling raising period. If it is thicker than 2500 denier, the knitting will be limited and the weight will be heavy.

In the present invention, when the mesh is composed of non-corroding fiber yarns, it is preferable that there is no connection between wales or even if there is any connection between wales. Also, insert a plurality of needles for the insertion yarn made of corrosive fiber. By adopting this structure, the knitted fabric becomes uneven in the soil.

A double needle bed warp knitting machine is used to manufacture the bag-shaped structure of the present invention. The opening of the bag-shaped structure, the tubular portion, the front and back joints, and the cut portion are formed by changing the stitches, respectively,
By knitting, a plurality of bag-shaped structures are simultaneously and continuously produced on the machine. FIG. 1 shows a knitting side view of the two-needle bed warp knitting machine. The two-needle bed warp knitting machine has two needle beds, and each set width is knitted with front and back needles (front and back needles), and both ends are knitted with front and back needles using different yarns. A tubular knitted fabric can be obtained. After the set length is knitted, when the yarn groups arranged in the front and back are knitted with the front and back needles, the front and back knitted fabrics are joined to form a bag-like structure as a whole as shown in FIG.

The diameter of the tubular portion can be set by the number of threads arranged on the front and rear needles. For example, 20 gauge (1
When making a bag-like structure with a diameter of 4 inches using a knitting machine with 20 needles per inch), the circumference is 12.56 inches, so half of that, 6.28 inches, can be knitted with the front and back needles. Threads may be placed on each of the 125 needles. Generally, since the needle bed of a warp knitting machine has 100 inches or more, it is possible to simultaneously manufacture bag-shaped bodies having different diameters by changing the number of yarns arranged. The setting of the length of the tubular portion is determined by the number of knitting courses. A patterned chain may be used, but when a long tubular portion is required, it is efficient to use a two-needle bed warp knitting machine with a switching mechanism, and the length can be set in a wide range.

The knitting structure will be described in detail below with reference to the drawings. FIG. 3 shows a schematic explanatory view of the bag-shaped structure of the present invention, and FIG. 4 shows a knitting structure diagram. As for the arrangement of the yarns, soil rotting fiber yarns are used for the reeds L1 and 6, and non-rotting fiber yarns or soil rotting fiber yarns are used for the other reeds L2, L3, L4, and L5.

The role of each reed will be described. The reeds L1 and L2 are used to knit half of the tubular portion using the needles on the front needle bed, and the reeds L5 and L6 are used to knit half tubular portions using the needles on the rear needle bed. The reed L3 is a thread that joins a knitted fabric made of front and rear needles in a tubular shape at the ears, and is knitted by the front and rear needles. The reed L4 serves to join a knitted fabric made of front and rear needles to the entire knitting width to form a tubular shape.

Part A of FIG. 4 is a knitting structure diagram when knitting the tubular part of the bag-shaped structure. The reeds L1 and L2 are knitted only with the needles on the front needle bed, and the reeds L5 and L6 are knitted only with the needles on the rear needle bed. The reed L3 is knitted with front and rear needles in order to arrange the yarns only at both ends of the ears and join the front and rear knitted fabrics to form a tubular shape. The yarn of the reed L4 is knitted on either the front or the rear side in the tubular portion.

A portion B in FIG. 4 is a knitting structure of a portion where the knitted fabric knitted by the front needle and the back needle is connected to the entire knitting width. Therefore, the yarn of the reed L4 is knitted with the front and rear needles. The L4 thread can be arranged by pulling out a plurality of needles depending on the swing width (number of stitches width). Instead of arranging the yarn on the reed 4, the front and rear needles can be knitted with the yarns arranged on the reeds L2 and L5, and the same operation as the reed L4 can be performed. However, since the swing width of the reed must be increased, there is a drawback that the production speed is reduced. The number of formation courses in Part B is L4
Although it depends on the number of yarn arrangements, 1 to 2 repeats of the knitting structure are sufficient.

A portion C in FIG. 4 is a portion knitted after the portion B, and is a cutting portion which is configured to be easily cut during use. Since the yarn of each reed is swung only for one needle, all needles form a thin string-shaped knitted portion made of chain knitting and inserted yarn, which is greatly different from other portions and is therefore easy to understand as a cut portion. Knit growth of 1 cm or less is sufficient.

One of the bag-shaped structures is knitted by the above steps. By repeating this, a large number of bag-shaped structures can be manufactured simultaneously or continuously. The above-mentioned knitting structure is an example of the method of the present invention, and does not limit other knitting structures compatible with the method of the present invention.

The bag-shaped structure of the present invention is provided with seedlings, seeds, soil,
It can be easily transplanted by adding fertilizers, raising seedlings, digging holes in the main field at the appropriate time, and planting together with the bag-shaped structure. Since this bag-shaped structure contains soil spoilage fiber,
The knitting structure or the whole is biodegraded in the soil, which does not adversely affect the environment and does not hinder root growth.

[0020]

The present invention will be described in more detail with reference to the following examples, but the following examples do not limit the present invention.
All modifications and implementations that do not depart from the spirit of the description below are included in the technical scope of the present invention.

EXAMPLE 2 A 4-inch bag-like structure having the knitting structure shown in FIG. 4 was prepared by using a two-gauge two-needle bed warp knitting machine. Reed L1, L6
100% cotton as rotten fiber, 10th (English number about 530
Denier) and reeds L2, L5, L3 and L4 were nylon multifilament 30 denier 6 filaments. The number of threads of each reed is L1, L6 per bag-shaped structure,
In L2 and L5, 138 pieces each, in L3, one piece was arranged at each end of the bag-shaped structure, and in L4, 46 pieces were arranged at a ratio of 1 to 3 needles. With a course density of 30 pieces / inch, the cylindrical section has 360 courses, and the joint section
Eight courses and ten courses of the cutting portion were defined as one bag-like structure. The width of the knitting machine was 75 inches, so 10 bag-like structures were set at one time. It knitted continuously under the above conditions. The bag-shaped structure obtained had an opening diameter of about 4 inches and a tubular part length.
It was 10 inches. The seedlings and the soil were put into this fibrous bag-like structure for raising seedlings, left for a period of one month for raising seedlings, and then transplanted to the main field for each bag-like structure. One year later, the surroundings of the seedlings were dug up, but the bag-like structure was rotted and decomposed into pieces.

[0022]

EFFECTS OF THE INVENTION The present invention is configured as described above, and it is easy to change the design of the fiber tubular structure for raising seedlings which is planted as it is together with the seedlings into various sizes according to the purpose. became. The obtained continuous bag-like structure can be used simply by cutting it on site and has good workability. Furthermore, since the whole bag-shaped structure or the knitting structure is decomposed in the soil, seedlings can be transplanted together with the container without inhibiting the growth of the plant. In addition, since the seedling raising pot does not become useless waste after transplantation, transplanting and afforestation can now be done easily without destroying the environment.

[Brief description of drawings]

FIG. 1 is a side view of a knitting portion of a two-needle bed warp knitting machine.

FIG. 2 is a schematic perspective view of a bag-shaped structure on a knitting machine.

FIG. 3 is a schematic explanatory view of a bag-shaped structure.

FIG. 4 is a knitting structure diagram of each part of the bag-shaped structure.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-113681 (JP, A) JP-A-4-8232 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01G 9/10 A01G 23/04 503

Claims (3)

(57) [Claims] 1. A tubular portion of a bag-like structure formed by soil rotting fiber yarns or soil rotting fiber yarns and non-rotting fiber yarns has a diameter of 2.0 to 10.0 inches and a length of 3.0. ~ 20.0 inches, the thickness of the yarn forming the bag-shaped structure is 10 ~
A fiber bag-like structure for raising seedlings, which is 2500 denier. 2. A two-needle bed warp knitting machine is used to perform knitting by changing the knitting structures of the opening, the tubular portion, the front and back joints and the cut portion of the bag-like structure according to claim 1. A method of manufacturing a bag-shaped structure. 3. When knitting the bag-shaped structure according to claim 1, which is composed of soil rotting fiber yarns and non-rotting fiber yarns,
The non-rotting fiber yarn is used to form a stitch, and the connection between the wales of the yarns is minimized, and the soil-rotting fiber yarn is inserted between a plurality of needles to knit a tubular portion. The manufacturing method described.