JP2006204250A - Agricultural net - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural net which can hold strengths in the longitudinal and latitudinal directions in a good balance and can simultaneously lower the production cost. <P>SOLUTION: This agricultural net 1 in which longitudinal transparent synthetic resin filaments 2 and latitudinal transparent filaments 3 are woven in a net-like shape having such a rectangular mesh size 5 as preventing the invasion of insect pests is characterized by forming the longitudinal transparent filaments 2 and the latitudinal transparent filaments 3 in a transparent or translucent state, and weaving colored filaments in at least one of the longitudinal transparent filaments 2 and the latitudinal transparent filaments 3 at prescribed distances. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an agricultural net that can prevent the invasion of insect pests such as white spotted whitefly, beetle leaf fly, kissing beetle, thrips and the like.

  Conventionally, as an agricultural net, for example, there is a net in which warp yarns and weft yarns having substantially the same thickness are formed in a net shape at substantially the same intervals. In such a net, since the warp and weft have the same thickness and spacing, the bending rate of the yarn generated at the intersection of the warp and weft is small, and the mutual contact length and contact resistance are constant. For this reason, when a tensile force is applied to the net, the crossing position of the warp and the weft is easily displaced, and the mesh formed between the warp and the weft is deformed or misaligned. The intrusion cannot be prevented.

  Further, when the distance between the warp and the weft is reduced, the mutual tightening force is increased, so that the contact resistance necessary for preventing the mesh from being deformed and misaligned can be obtained. However, since the net of the entire net is reduced and the air permeability and dehumidification properties are extremely deteriorated, the influence on the growth of crops is increased. Moreover, when manufacturing such an agricultural net, weaving is carried out by reciprocating several times in the direction substantially perpendicular to a large number of pre-tensioned warp yarns. Since the number of times increases, it takes time and effort to manufacture a net with a unit area, which deteriorates productivity and increases production cost.

  In addition, for example, a net-like material or a multilayer yarn mesh sheet for printing in which a substantially square mesh is formed of warp and weft made of synthetic resin and the intersecting portions are thermally welded has been proposed (Patent Document 1). 2). However, when the distance between the warp and the weft is narrowed, the entire mesh can be reduced substantially evenly. However, since the vertical distance between the wefts woven in the direction substantially perpendicular to the warp is also narrowed, the size of the entire mesh is reduced. Has a problem that the air permeability and the dehumidifying property are extremely deteriorated.

JP-A-10-44273 JP 2002-327353 A

  An object of the present invention is to provide an agricultural net that can reduce production costs while maintaining a strength balance in the vertical and horizontal directions.

  The present invention is an agricultural net composed of a synthetic resin warp and weft in a net-like shape that prevents entry of pests, and the warp and weft are formed transparently or translucently, An agricultural net in which colored yarn having a color is woven at predetermined intervals between at least one of warp and weft.

  The degree that the invasion of the pests is prevented includes the degree that the invasion and passage of the pests such as the whitefly whitefly, the beetle, the kissing beetle, and the thrips are prevented.

  The synthetic resin yarn includes forming with synthetic resin or synthetic resin fiber such as polyethylene (PE), vinyl chloride resin, acrylic resin and ABS resin.

The net shape includes forming with a weaving method such as plain weave, twill weave or satin weaving, and also includes mechanical weaving with an automatic weaving machine.
The colored yarn includes being formed with the same material and / or the same diameter as the warp and / or weft.
In addition, the colored yarn includes a colored yarn in which a color such as white, yellow, reflected color, red, green, or purple is colored by coating, impregnation, mixing, or the like.
In addition, for example, it may include a yarn that does not contain harmful substances such as aluminum.

By forming warps and wefts transparent or translucent, sunlight passes through the space covered with agricultural nets and is suitable for the growth of cultivated products (or crops) such as vegetables, fruits and flower buds. Can be obtained.
In addition, by weaving colored colored threads at predetermined intervals, it is possible to reflect the sunlight that is irradiated toward the agricultural net with colored threads and to obtain a repellent effect that prevents the invasion of pests by reflected light Can do.
Further, since the color of the reflected light depends on the color of the colored yarn to be reflected, the color of the reflected light can be changed by changing the color of the colored yarn, and different repelling effects can be obtained.

  In addition, for example, a colored yarn of two or more colors may be used, such as a purple colored yarn and a green colored yarn, whereby further aesthetic and repellent effects can be obtained.

  Further, when the agricultural net is cut into a desired size, the size of the agricultural net can be grasped by the colored yarn.

  In addition, for example, in the case of a conventional agricultural net that has obtained a repelling effect by weaving a thread in which silver or aluminum is vapor-deposited, it is necessary to separate and discard the thread in which silver or aluminum is vapor-deposited when it is discarded. However, because we have a repellent effect by weaving PE colored threads that do not contain harmful substances, even when discarding agricultural nets, there is no need to separate and discard them. Can be saved.

As an aspect of the present invention, the predetermined interval is the first predetermined interval, and a plurality of colored yarns can be woven continuously at every second predetermined interval that is an integral multiple of the first predetermined interval.
Moreover, the repelling effect which prevents the invasion of a pest can further be improved by weaving a plurality of colored yarns having colors continuously at every second predetermined interval.
Even when the agricultural net is cut into a desired large size, the size of the agricultural net can be easily grasped by the colored yarn.

  Further, as an aspect of the present invention, the warp yarns are stretched substantially in parallel with an interval at which the invasion of the pests is prevented, and the diameter is increased in a direction intersecting the warp yarns at an interval wider than the interval of the warp yarns. Two types of wefts having different sizes can be interwoven.

The intersection includes a substantially orthogonal or oblique intersection.
The weaving of two types of wefts having different diameters alternately refers to weaving so that two types of wefts having different diameters are adjacent to each other.
As a result, even if fine pests try to invade from the mesh of the agricultural net, the pest blades cannot touch the warp and the weft, or the pest's body cannot be passed between the warp. Pests can be prevented from entering the enclosed space.
Further, by weaving wefts in a direction intersecting with each warp at a wider interval than the warp, the warp and weft intervals are substantially equal than when the warp and weft intervals are substantially the same. The formed rectangular mesh is larger. Therefore, the air permeability and dehumidification in the space covered with the agricultural net can be improved, and the temperature and environment suitable for cultivation can be maintained.
Moreover, since the number of weaving yarns and the number of weaving are small, the weight of the entire agricultural net is light, and handling is easy and easy.
In addition, the number of wefts weaving is reduced and the weaving length of one weft is increased, so the time required for mechanical weaving can be greatly shortened, improving productivity and reducing production costs. it can.
Also, by adjusting the warp spacing, it is possible to prevent the invasion of pests, so that the insect repellent effect can be adjusted without affecting the weft weaving time. Also, weaving two types of wefts with different diameters alternately Thus, the strength balance between the vertical direction and the horizontal direction of the agricultural net can be adjusted.

In addition, since the outer peripheral surface of the warp yarn that intersects and contacts the weft yarn is deformed or bent in a state along a part of the outer peripheral surface of the weft yarn, the mutual contact length and contact resistance increase, and the warp yarn and weft yarn cross position Is difficult to displace, and resistance necessary to prevent the mesh from being deformed and misaligned can be obtained. Therefore, the effect of preventing the entry of fine pests can be stably obtained.
Moreover, since it is possible to prevent the invasion of pests with almost no use of pesticides and insecticides, the amount of the pesticide sprayed is small, and there is little influence on the natural environment, which is suitable for reduced pesticide cultivation and pesticide-free cultivation.

Further, as an aspect of the present invention, one of the two types of wefts can be formed thicker than the warp.
Thereby, the fall of the intensity | strength of the horizontal direction of the agricultural net | network produced by having extended the space | interval of a weft can be prevented.
In addition, the production cost can be reduced as compared with the case where all the wefts are composed of thick wefts. As an aspect of the present invention, the diameter of the other of the two types of wefts is the same as the diameter of the warp yarns. Can be formed.

Accordingly, if two types of yarns having different diameters are prepared, an agricultural net woven with wefts having different thicknesses can be configured.
Accordingly, the production cost can be reduced by improving the workability and reducing the stock amount of yarn necessary for producing the agricultural net.

As an aspect of the present invention, the interval between the wefts can be formed to be greater than 1.0 times and less than or equal to 2.0 times the interval between the warps.
Thereby, the strength balance of the vertical direction and horizontal direction of an agricultural net | network can be maintained by adjustment of the diameter of one weft.

As an aspect of the present invention, the diameter of the weft thicker than the warp can be formed at least 1.2 times larger than the diameter of the warp.
Thereby, the strength balance of the vertical direction and the horizontal direction of the agricultural net can be maintained.

Moreover, as an aspect of the present invention, a UV-cutting agent can be attached to at least one of the warp and the weft.
The UV-cutting agent includes a UV-cutting agent, and includes attaching to warps and wefts by coating, impregnation, mixing, and the like.
Thereby, the amount of ultraviolet rays transmitted through the space covered with the agricultural net can be adjusted.

  According to the present invention, it is possible to provide an agricultural net that can reduce production costs while maintaining a strength balance in the vertical and horizontal directions.

An embodiment of the present invention will be described below with reference to the drawings.
1 showing a perspective view of the state of use of the agricultural net 1, FIG. 2 showing a partial plan view of the agricultural net 1, FIG. 3 showing an enlarged plan view of the longitudinal transparent filament 2 and the lateral transparent filament 3, and longitudinal transparency The agricultural net 1 will be described together with FIG. 4 showing an explanatory view of the crossing portion of the filament 2 and the transverse transparent filament 3 in a longitudinal side view.
The agricultural net 1 is cut and sewn into a kamaboko shape that fits the outer shape of a net house 10 for growing, for example, a cultivated product (or agricultural product) A such as vegetables, fruits, and flowers, and is used by hanging on a frame 11. . Since the size of the net house 10 varies depending on the type of the cultivated product A, the net house 10 is processed into a size suitable for the net house 10 to be used.

The agricultural net 1 is composed of vertical transparent filaments 2, horizontal transparent filaments 3 (3a, 3b), vertical white filaments 4a, and horizontal white filaments 4b. More specifically, it is formed by mechanically plain weaving with a vertical distance D1 in which 65 vertical transparent filaments 2 can be woven per inch, and a vertical distance D2 in which 45 horizontal transparent filaments 3 are woven per inch. Further, the vertical transparent filament 2 and the horizontal transparent filament 3 are orthogonal to each other to form a rectangular mesh 5 (about 0.2 mm × about 0.4 mm).
The rectangular mesh 5 may be formed in a rectangle of about 0.3 mm × about 0.4 mm.

Note that FIG. 2 shows a reduced number of longitudinal transparent filaments 2 and transverse transparent filaments 3 in order to easily understand the configuration of the agricultural net 1.
The left-right distance D1 is an interval at which fine pest feathers such as whitefly whitefly, leguminous leaf flies, thrips and thrips come into contact with the warp or the pest body is sandwiched between the warps, so that it cannot pass between the warps.
Moreover, the vertical white filament 4a and the horizontal white filament 4b are woven in place of the vertical transparent filament 2 and the horizontal transparent filament 3 every 2 cm to form a first square lattice 6a (shown by broken lines in FIG. 2).
Further, instead of the longitudinal transparent filament 2 and the transverse transparent filament 3 adjacent to both sides of the longitudinal transparent filament 2 and the transverse transparent filament 3 every 10 cm, three longitudinal white filaments 4a and a transverse white filament 4b are continuously provided. A second square lattice 6b (shown by a dashed line in FIG. 2) is formed by interweaving. The vertical transparent filament 2 and the white filament 4a, and the horizontal transparent filament 3 and the white filament 4b are orthogonal to each other. .

The vertical transparent filament 2, the horizontal transparent filament 3, and the white filament 4 (4a, 4b) are formed of polyethylene fibers (PE) that do not cause environmental pollution even when discarded.
More specifically, the longitudinal transparent filament 2, the transverse transparent filament 3b, and the longitudinal white filament 4a are formed of 110 dtex PE fibers having a diameter of about 0.124 mm (design value), and the transverse transparent filament 3a and the lateral white filament 4b are about diameter. It is formed of 180 decitex PE fibers of 0.155 (design value) mm.
Furthermore, the horizontal transparent filaments 3a and the horizontal transparent filaments 3b are alternately woven at a distance D2.
Moreover, the vertical transparent filament 2 and the horizontal transparent filament 3 are transparent, and the white filament 4 is colored white.

  In addition, as shown in FIG. 4, when the agricultural net 1 is composed of only the vertical transparent filament 2 and the horizontal transparent filament 3b, the contact length L1 of the intersecting portion between the vertical transparent filament 2 and the horizontal transparent filament 3b (FIG. 4). The contact lengths L2 and L3 of the intersecting portion with the longitudinal transparent filament 2 are formed longer by alternately weaving the transverse transparent filament 3a and the transverse transparent filament 3b from the middle (A) a portion and b portion). (C part and d part of (B) in FIG. 4). Accordingly, it is possible to increase the contact resistance of the intersecting portion between the longitudinal transparent filament 2 and the transverse transparent filament 3a or the transverse transparent filament 3b.

Thereby, it is cultivated by using the net 1 for agriculture so that the whole or part of the net house 10 for cultivating the cultivated product A is covered, or by directly covering the cultivated product A so as to be covered. At times, even if fine pests try to invade from the rectangular mesh 5 of the agricultural net 1, the pest blades come into contact with the vertical transparent filaments 2 and the horizontal transparent filaments 3, or the pest body is between the vertical transparent filaments 2. Since it cannot pass by being pinched or the like, it is possible to prevent pests from entering the space covered with the agricultural net 1.
Further, since the distance D2 between the horizontal transparent filaments 3 is larger than the distance D1 between the vertical transparent filaments 2 and is woven, the vertical transparent filaments are formed rather than forming substantially square meshes with the same number of vertical transparent filaments 2 and horizontal transparent filaments 3. The rectangular mesh 5 formed between 2 and the transverse transparent filament 3 is larger, and the air permeability and dehumidifying property are improved, and the temperature and environment suitable for cultivation can be maintained.
Further, since the number of weaves and the number of weaving of the horizontal transparent filaments 3 are small, the weight of the entire agricultural net 1 is light, and the handling of the agricultural net 1 can be performed easily and easily.
In addition, the number of weaves of the horizontal transparent filament 3 is reduced, and the weaving length by one weave of the horizontal transparent filament 3 is increased. Therefore, the time required for mechanical weaving is greatly reduced, and the productivity of the agricultural net 1 is improved. Can be improved and production costs can be reduced.
Moreover, since the invasion of pests can be prevented by adjusting the interval between the longitudinal transparent filaments 2, the insect repellent effect can be adjusted without affecting the time for weaving the transverse transparent filaments. By forming thicker than the longitudinal transparent filament 2 and the transverse transparent filament 3b, the transverse transparent filament 3 is crossed and brought into contact with the longitudinal transparent filament 2 and the transverse transparent filament 3 having substantially the same thickness only when mechanically plain-woven. Since the bending rate of the longitudinal transparent filament 2 increases and the mutual contact length and contact resistance increase, the crossing position of the longitudinal transparent filament 2 and the transverse transparent filament 3 is difficult to be displaced, and the rectangular mesh 5 is deformed and deformed. Misalignment can be prevented.
In addition, the same effect can be acquired also in the cross | intersection part of the vertical white filament 4a and the horizontal white filament 4b.
Therefore, since the effect of preventing the invasion of fine pests can be stably obtained, pests can be controlled with almost no use of pesticides and pesticides, so the amount of pesticide sprayed can be reduced and the environment can be reduced. This can reduce the impact.

  In addition, since the filament having a smaller diameter is usually more expensive, the production cost can be reduced by weaving the transverse transparent filament 3a and the transverse transparent filament 3b as compared with the case where only the transverse transparent filament 3b is used. it can.

  Further, by providing the second square lattice 6b having a square shape of 10 cm and the first square lattice 6a having a square shape of 2 cm by the white filament 4, when the agricultural net 1 is cut according to the net house 10, the net house 10 Since it becomes a standard of the length of the agricultural net | network 1 when mounting | wearing the agricultural net | network 1, processing and mounting | wearing of the agricultural net | network 1 can be made easy.

  Further, the first square lattice 6a and the second square lattice 6b are formed by weaving the white filament 4 in place of the longitudinal transparent filament 2 and the transverse transparent filament 3, so that the sunlight irradiating the agricultural net 1 is converted into the white filament. 4 can be reflected by the white color, and can have a repellent effect to prevent the invasion of pests.

In addition, for example, in the case of a conventional agricultural net that has obtained a repelling effect by weaving a thread in which silver or aluminum is vapor-deposited, it is necessary to separate and discard the thread in which silver or aluminum is vapor-deposited when it is discarded. A net for agricultural use because it has a repellent effect by interweaving between the vertical transparent filament 2 and the horizontal transparent filament 3 of the same material with PE colored white filament 4 that does not contain harmful substances. Even in the case of discarding 1, it is not necessary to separate and dispose of it, and the labor for disposal can be saved.
In addition, you may attach an ultraviolet-ray cutting agent to the vertical transparent filament 2, the horizontal transparent filament 3, and the white filament 4 by application | coating, impregnation, mixing, etc.
Thereby, the amount of ultraviolet rays transmitted through the space covered with the agricultural net 1 can be adjusted.

In correspondence between the configuration of the present invention and the above-described embodiment,
The scale of the present invention corresponds to the rectangular scale,
Similarly,
The warp corresponds to the longitudinal transparent filament 2 or the longitudinal white filament 4a,
The weft corresponds to the transverse transparent filament 3 and the transverse white filament 4b.
The warp spacing corresponds to the left-right spacing D1,
The distance between the wefts corresponds to the vertical distance D2,
The colored yarns correspond to the vertical white filament 4a and the horizontal white filament 4b.
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The perspective view which shows the use condition of the net | network for agriculture. Partial top view of agricultural net The enlarged plan view of a longitudinally transparent filament and a transversely transparent filament. Explanatory drawing of the cross | intersection part by the vertical side view of a vertical transparent filament and a horizontal transparent filament.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Agricultural net 2 ... Vertical transparent filament 3, 3a, 3b ... Horizontal transparent filament 4 ... White filament 4a ... Vertical white filament 4b ... Horizontal white filament 5 ... Rectangular scale D1 ... Left-right space | interval D2 ... Vertical space | interval

Claims (8)

An agricultural net constructed in a net shape with warp and weft made of synthetic resin in a manner that prevents the invasion of pests,
While forming the warp and weft transparent or translucent,
An agricultural net in which colored yarn having a color is woven at predetermined intervals between at least one of the warp and the weft. The agricultural net according to claim 1, wherein the predetermined interval is a first predetermined interval, and a plurality of colored yarns are continuously woven every second predetermined interval that is an integral multiple of the first predetermined interval. The warp is stretched approximately in parallel with an interval such that the invasion of the pest is prevented,
The agricultural net according to claim 1 or 2, wherein two kinds of wefts having different diameters are woven alternately in a direction intersecting with each warp. The agricultural net according to claim 3, wherein one of the two types of wefts has a diameter larger than that of the warp. The agricultural net according to claim 4, wherein the other of the two types of wefts has the same diameter as the warp. The agricultural net according to any one of claims 3 to 5, wherein the weft yarn interval is formed to be greater than 1.0 times and less than 2.0 times the warp yarn interval. The agricultural net according to any one of claims 4 to 6, wherein the diameter of the weft thicker than the warp is formed to be at least 1.2 times thicker than the diameter of the warp. The agricultural net according to any one of claims 1 to 7, wherein a UV-cutting agent is attached to at least one of the warp and weft.

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