JP2012139208A - Insect screen and material for net greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insect screen retaining the air-permeability by preventing decline of the aperture rate without causing irregular stitch of holes, and improving the insect screening effect.SOLUTION: The insect screen 10 is to compose a net greenhouse 1 for cultivating crops. The insect screen 10 includes a resin film base material 11, and a number of holes 12 are bored in the film base material 11. As the holes are formed by boring the film base material 11, irregularity of the holes 12 does not occur while using the net as compared to holes formed by weaving the warp and the weft.

Description

  The present invention relates to an insect net and a net house material that can be used in the agricultural field to prevent invading pests.

  Conventionally, insect-proof nets used in the agricultural field consist of nets formed by weaving warps and wefts in a net shape at substantially the same intervals. This insect net includes a number of holes formed by weaving warp and weft.

  However, when trying to make the holes small in order to enhance the insect-proofing effect, it is necessary to form many small holes in order to maintain the breathability of the insect-proof net before making the holes small. In order to form a large number of small holes, it is necessary to reduce the width (thickness) of the warp and weft. In this case, the mechanical strength of the entire insect net is reduced because the strength of the warp and weft is reduced. The net may be partially damaged.

JP 2002-129854 A

  The present invention has been made in consideration of such points, and an object thereof is to provide an insect repellent net and a material for a net house that can improve the insect repellent effect without deteriorating air permeability and mechanical strength. And

  The present invention is an insect-repellent net comprising a flat net member having a plurality of holes provided in a film base material.

  The present invention is the insect net characterized in that the film substrate is a resin film.

  In the present invention, the plurality of holes are arranged on the net member in a straight line with a first pitch in the first direction, and the second length is the same as the first pitch in the second direction orthogonal to the first direction. It is an insect net characterized by being arranged on a straight line at a pitch.

  The present invention is the insect net, wherein the plurality of holes are arranged such that the distance between the centers of two adjacent holes is the same.

  The present invention is the insect net characterized in that each hole has a circular shape.

  The present invention is an insect repellent net in which each hole has a regular hexagonal shape and faces in the same direction.

  The present invention is an insect repellent net characterized in that the net member including a plurality of holes has a mountain-shaped cross-sectional shape.

  The present invention further includes a reinforcing material attached to a net member including a plurality of holes, and the reinforcing material is a frame material having an opening having a shape larger than the plurality of holes.

  The present invention comprises a net member in which a plurality of holes are provided in a film base and a sealing member connected to the net member, and the net member and the sealing member are made of the same film base. Materials.

  As described above, according to the present invention, since the net member of the insect-proof net is obtained by opening a large number of holes in the film base material, the insect-proof net is produced by weaving warp and weft. Thus, it is possible to provide an insect repellent net and a net house material capable of improving the insect repellent effect without lowering the air permeability and mechanical strength.

FIG. 1 is a perspective view showing a net house in an embodiment of the present invention. FIG. 2 is an enlarged view showing an insect net. FIGS. 3A, 3B and 3C are diagrams showing a modification of the insect-proof net. 4 (a) and 4 (b) are diagrams showing another modification of the insect net. FIG. 5 is a view showing another modification of the insect net. FIGS. 6A and 6B are diagrams showing another modification of the insect net. FIGS. 7A, 7B, and 7C are diagrams showing another modification of the insect net. FIGS. 8A, 8B, and 8C are diagrams showing other modified examples of the insect net. FIG. 9A and FIG. 9B show an insect net as a comparative example.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to FIGS.

  1 is a perspective view showing a net house, and FIG. 2 is an enlarged view showing an insect net.

  1 and 2 show a net house 1 for cultivating agricultural products such as vegetables and fruits. The net house 1 includes a basic pipe 2 and a net house material 10A attached to the basic pipe 2 and having an insect net 10 described later.

  Among them, the net house material 10A includes an insect repellent net 10 including a large number of holes 12, a lower sealing member 5a positioned below the insect net 10 and an upper sealing member 5b positioned above the insect net 10. Have.

  In this case, the lower sealing member 5a, the insect net 10 and the upper sealing member 5b are all formed of a film base 11 integrally formed. The lower sealing member 5a and the upper sealing member 5b are formed of a region having a sealing property that is formed without any processing in the integrally formed film base material 11, and the insect net 10 is many in number with respect to the film base material 11. It consists of the area | region which has air permeability obtained by opening the hole 12.

  Further, an additional pipe 3 that forms a box-shaped portion 4 protruding to the side is provided on the side surface of the net house 1, and the ultraviolet removing film 6 that forms the upper surface and the side surface of the box-shaped portion 4 is provided on the additional pipe 3. Is installed.

  Further, an additional insect net 10B that forms the front of the box-shaped portion 4 is attached to the additional pipe 3, and this additional insect net 10B has the same configuration as that of the insect net 10 described above. On the other hand, it is obtained by opening a large number of holes 12.

  Next, the insect net 10 will be described in detail below.

  The insect net 10 includes a film base material (net member) 11 having a large number of holes 12.

  In this case, the film base material 11 having a large number of holes 12 is prepared by preparing the film base material 11 and subjecting the film base material 11 to punching processing, punching processing, and etching processing. It is obtained by opening the holes 12, and the film substrate 11 remains linearly around the holes 12.

  In this case, the maximum length of the holes 12 is 0.4 mm, the width of the film substrate 11 remaining in a linear shape is 0.1 mm, and the distances l between the centers 12a of the holes 12 are equal.

  As the film substrate 11, a resin-made resin film or resin thin plate (hereinafter referred to as “resin film”) or a metal film or metal thin plate (hereinafter referred to as “metal film”) can be used. A number of holes 12 can be opened by punching, punching, or etching the resin film or metal film.

  Thus, the film base material 11 is prepared, and the film base material 11 having a large number of holes 12 is obtained by punching, punching, and etching the film base material 11. Can be kept smooth. Further, the holes 12 are not misaligned in the insect net 10. That is, for example, when the insect repellent net 30 having the holes 32 is produced by weaving the resin warps 31a and the resin wefts 31b (FIG. 9A), it is considered that the holes 32 may be misaligned during use. In order to increase the insect repellent effect, when the opening area of the hole 32 is to be reduced, misalignment is a serious problem. According to the present invention, the hole 12 is formed by opening the film base 11. As a result, the holes 12 are not misaligned.

  Furthermore, in order to prevent the above-mentioned misalignment, the insect warp net 30 having the holes 32 is produced by fusing the resin warp 31a and the resin weft 31b (FIG. 9B). It is conceivable that the fusion part 33 swells and the opening area of the hole 32 decreases, but according to the present invention, the insect net 30 does not have such a fusion part 33, so that the opening area is small. There is no decrease.

(Film substrate 11)
Next, the material of the film substrate 11 will be described. Among these, the following materials can be used as the film substrate 11.

  As the film substrate 11, a resin film such as polypropylene, polyester, polyethylene, polyvinyl alcohol, vinylon, nylon, or polyolefin can be used.

  Such a resin film is translucent and does not interfere with daylighting for plant growth. Moreover, when restricting translucency and preventing the temperature rise in the net house 1, the resin film which mixed the titanium oxide etc. can be used. In this case, the mixing ratio of titanium oxide or the like can be freely adjusted to control the translucency.

  Moreover, you may give function addition, such as foaming a resin film and providing the film base material 11 with heat retention performance.

  The resin film may be composed of a multilayer film in which a plurality of materials are laminated. A film in which polyethylene that is strong against pulling and nylon that is strong against piercing is laminated, and a film that is strong in both pulling and piercing can be used.

  Further, a metal film may be used as the film base 11. In this case, an aluminum plate, a stainless plate, a copper plate, or the like can be used as the metal film. Since the surface of the metal film has a metallic luster, a repellent effect against insects can be expected. Also, metal films have less growth and shrinkage due to aging over several years than resin films.

  Furthermore, as the film substrate 11, a material that has a fluffy surface when cut may be used.

  Thus, when the film base material 11 becomes fluffed at the time of cutting | disconnection, the fluffy fine hair can be formed in the hole 12, and the insect-proof effect of the hole 12 can be improved.

  In addition, as a material in which such a cut surface becomes fluffy, a tin orchid tape obtained by stretching polyethylene can be considered.

  Moreover, you may apply | coat the adhesive which mixed the insect repellent for killing an insect to the film base material 11 surface.

(Adhesive)
First, as a pressure-sensitive adhesive mixed with an insect repellent, an acrylic pressure-sensitive adhesive, a rubber pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, and the like can be used. Among these, an acrylic pressure-sensitive adhesive is preferable in terms of pressure-sensitive adhesive performance, In particular, an acrylic two-component cross-linking pressure-sensitive adhesive is suitable.

  Adhesives include natural rubber resins, ethylene-vinyl acetate copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, silicon copolymers, acrylate copolymers, methacrylate esters. Polymers, polyacrylic acid, polyacrylamide, polyvinylpyrrolidone, maleic acid and its anhydride copolymer, polyethyleneimine, melamine resin, and urea resin can be used.

  Further, the pressure-sensitive adhesive may be the same as that of a conventional insect trapping sheet, and any of fluororesin, silicon resin, urethane resin, and acrylic resin is preferable. A polybutene-based material is also used.

  As the pressure-sensitive adhesive, a pressure-sensitive adhesive composition comprising a polymer elastomer having a molecular weight of 10,000 to 500,000 and an unsaturation degree of 5 mol% or less and a softening agent having a molecular weight of 100 to 10,000 may be used.

  As the polymer elastomer, at least one selected from polyisobutylene rubber, butyl rubber, nitrile rubber, styrene-butadiene rubber, styrene-ethylene / propylene-styrene rubber, acrylic rubber, and the like is suitably used without particular limitation in the present invention. Can be used. In particular, polyisobutylene rubber and butyl rubber are more preferably used because they have an appropriate compatibility with the softener described later and exhibit an excellent capturing ability against flying insect pests. In addition, when a polymer elastomer having a colorless and transparent, white or light yellow color tone having a wavelength transmittance of 90% or more at 200 to 800 nm is used, the hue of the pressure-sensitive adhesive substrate made of a sheet, a film, or the like is not significantly inhibited. Active attraction using the pest habit of color can be performed.

  As the softening agent, at least one selected from liquid polyisoprene, liquid polybutadiene, polybutene, liquid polyisobutylene and the like is preferably used without limitation.

(Insect repellent)
Insect repellents include pyrethroid compounds such as permethrin and deltamethrin; neonicotinoid compounds such as clothianidin and dinotefuran; arylpyrazole compounds such as fipronil and etiprol; carbamate compounds such as phenocarb and methoxydiazone; and organic phosphorus compounds such as fenitrothion. Can be given.

  Further, as insect repellents, permethrin, cypermethrin, ciphenothrin, d-phenothrin, resmethrin, d-resmethrin, fenvalerate, esfenvalerate, esbiotrin, fenpropatoline, etofenprox, tralomethrin, deltamethrin, silafluophene, cifluthrin, bifenthrin, Allethrin, d-arethrin, pyrethrin, tetramethrin, transfluthrin, metfurthrin, dimeflutrin, profluthrin, and the like can be used.

  In FIG. 1 and FIG. 2, since the film base material 11 which has many holes 12 is obtained by forming many apertures with respect to the film base material 11, the insect repellent net which has a hole by weaving warp and weft As compared with the case of manufacturing the hole 12, the gap of the hole 12 does not occur, and the hole area does not decrease compared with the case where the warp and weft are fused.

  As described above, since there is no misalignment in the hole 12 of the film base material 11, the insect-proofing effect of the insect-proof net 10 can be enhanced, and the opening area of the hole 12 is not reduced. The air permeability can be maintained.

Modifications of the Present Invention Next, modifications of the present invention will be described with reference to FIGS. 3 (a), (b), and (c) to FIGS. 8 (a), (b), and (c). 3 (a), (b), (c) to FIGS. 8 (a), (b), and (c), the same parts as those in the embodiment shown in FIGS. Detailed description is omitted.

  First, in the modification shown in FIGS. 3A, 3B, and 3C, FIG. 3A is a diagram showing a virtual insect net showing the arrangement of the centers of the holes, and FIGS. (C) is a figure which shows the shape of the hole of an insect-proof net.

As shown in FIGS. 3A, 3B, and 3C, the insect net 10 includes a film base 11, and a large number of holes 12 are formed in the film base 11. The plurality of holes 12 are arranged on the straight line at equal intervals at the first pitch P ₁ in the vertical direction, and are arranged on the straight line at equal intervals at the second pitch P ₂ having the same length as the first pitch P ₁ in the horizontal direction. Yes.

As shown in FIG. 3 (a), spacing of the longitudinal bore 12, i.e. the first pitch P ₁ is the longitudinal spacing between the centers 12a of the holes 12, lateral spacing of the holes 12, i.e. the 2 pitch _{P 2} is the lateral spacing between the centers 12a of hole 12. In addition, Fig.3 (a) is a top view of the virtual insect-proof net which shows the space | interval between the centers 12a of the hole 12, as mentioned above.

As shown in FIG. 3 (b), it is arranged in a straight line at equal intervals in the first pitch P ₁ number of holes 12 in the longitudinal direction, at equal intervals in the second pitch P ₂ are arranged on a straight line in the transverse direction As long as it is, the shape of the hole 12 may be square (FIG. 3B). The shape of the hole 12 may be circular (FIG. 3C).

In the modification shown in FIG. 3 (a) (b) ( c), holes 12 in the first pitch P ₁ is formed in a straight line at equal intervals in the longitudinal direction, the transverse direction of the first pitch P ₁ of the same length because it is formed in a straight line at equal intervals in the second pitch P _2, it can be carried out the task of opening the pores to the film substrate 11 easily and reliably.

  Next, another modification of the present invention will be described with reference to FIGS. Here, FIG. 4A is a diagram showing a virtual insect net showing the arrangement of the centers of the holes, and FIG. 4B is a diagram showing the shape of the holes of the insect net.

  As shown in FIGS. 4 (a) and 4 (b), the insect net 10 includes a film base 11, and a number of holes 12 are opened in the film base 11.

  As shown in FIG. 4A, the multiple holes 12 are arranged such that the distance l between the centers 12a of any two adjacent holes 12 is always the same.

  Thus, as long as the distance l between the centers 12a of any two adjacent holes 12 is the same, the shape of the holes 12 may be circular (FIG. 4B).

  4A is a plan view of a virtual insect-proof net showing the relationship of the distance between the centers 12a of the holes 12 as described above.

  FIG. 4B shows an example in which the distance l between the centers 12a of any two adjacent holes 12 is the same and the shape of the hole 12 is circular. As long as the distance l between the centers 12a of the two holes 12 is the same, the shape of the hole 12 may be a regular hexagon, a gourd shape, an ellipse, a circular hole 12, and a regular hexagonal shape. The holes 12 and the elliptical holes 12 may be combined.

  For example, in the insect net 10, a regular hexagonal hole 12 having a high air permeability may be provided in a region near the worker, and a circular hole 12 may be provided in a region where the air permeability is not required.

  Thus, by making the distance l between the centers 12a of any two adjacent holes 12 the same, for example, the shape of the hole 12 can be a regular hexagon, and the opening area of the hole 12 can be increased.

  Next, a further modification of the present invention will be described with reference to FIG.

  As shown in FIG. 5, the insect net 10 includes a film base 11, and a number of holes 12 are opened in the film base 11. The hole 12 has a circular shape.

  Further, the shapes of the holes 12 of the film base 11 are equal to each other, but the number of holes 12 per unit area varies depending on the region of the film base 11.

  In this way, by changing the number of holes 12 per unit area for each region of the film base 11, the breathability of the insect net 10 can be changed for each region.

  Further, since each hole 12 has a circular shape, it is difficult for dirt to adhere to the hole 12, and cleaning is easy even if dirt is attached to the hole 12.

  Further, another modification of the present invention will be described with reference to FIGS.

  As shown in FIG. 6A, the insect-proof net 10 includes a film base 11, and a large number of holes 12 are opened in the film base 11. Each hole 12 has a regular hexagonal shape. In this case, as shown in FIG. 6A, the air permeability of the insect-proof net 10 can be made uniform by making the number of holes 12 per unit area the same in all regions of the film base 11.

  Further, as shown in FIG. 6B, each hole 12 has the same regular hexagonal shape, and the number of the holes 12 per unit area is changed for each region of the film base, thereby allowing the ventilation of the insect-proof net 10. Sex can vary from region to region.

  Next, another modification of the present invention is described with reference to FIGS.

  As shown in FIGS. 7 (a) and 7 (b), the insect net 10 includes a film base 11, and a number of holes 12 are opened in the film base 11.

  The film substrate 11 including a large number of holes 12 has a mountain-shaped cross-sectional shape. 7 (a) and 7 (b), when the film substrate 11 is made of a resin film or a metal film, in any case, the film substrate 11 is shaped by a press machine (not shown), The film substrate 11 can have a mountain-shaped cross-sectional shape.

  Thus, when the film base 11 has a mountain-shaped cross-sectional shape, when the insect net 10 is viewed from the front, the number of holes 12 per unit area can be increased. Even when the holes do not function, the influence can be reduced.

  In addition, the surface which has the opening 16a which has a shape larger than the shape of the hole 12 in the surface of the film base material 11 which has the hole 12 so that the film base material 11 of the insect repellent net 10 can have a mountain-shaped cross section stably. While attaching the side reinforcement material 15a, you may attach the back surface side reinforcement material 15b which has the opening 16b which has a shape larger than the shape of the hole 12 in the back surface of the film base material 11. FIG.

  Next, another modification of the present invention is described with reference to FIGS.

  As shown in FIG. 8A, the insect net 10 includes a film base 11 including a large number of holes 12, and a reinforcing member 17 attached to the surface of the film base 11 to reinforce the film base 11. And.

  Further, the reinforcing member 17 is made of a frame material having a large number of openings 18 having a shape considerably larger than the shape of the apertures 12 formed in the film base material 11. For this reason, the holes of the film base material 11 in FIG. 12 is omitted.

  For example, in FIG. 8A, the opening 18 of the reinforcing member 17 has a rectangular shape of 20 cm long × 10 cm wide, and the maximum length of the hole 12 of the film substrate 11 is 0.4 mm. . For this reason, the hole 12 of the film base material 11 is not shown in FIG.

  By the way, when the film base material 11 consists of a resin film and the reinforcing material 17 consists of metal materials, the film base material 11 and the reinforcing material 17 can be adhere | attached with an adhesive agent.

  Moreover, when the film base material 11 consists of a resin film and the reinforcing material 17 consists of a resin material, the film base material 11 and the reinforcing material 17 can be welded by hot press.

  In addition, it is not necessary to provide the reinforcing material 17 over the entire area of the base film 11 of the insect-proof net 10, and the reinforcing material 17 may be provided only in the upper portion of the base film 11 where the weight is applied or where the wind hits. .

  Further, in FIG. 8A, the reinforcing member 17 of the insect-proof net 10 is composed of a frame member having a rectangular opening 18, but the reinforcing member 17 is composed of a frame member having a number of regular hexagonal openings 18. It is also possible (see FIG. 8B).

  Or you may comprise the reinforcement material 17 of an insect-proof net | network from the frame material which has many triangular-shaped opening 18 (refer FIG.8 (c)).

DESCRIPTION OF SYMBOLS 1 Net house 2 Basic pipe 3 Additional pipe 4 Box-shaped part 10 Insect net 10A Net house material 10B Additional insect net 11 Film base 12 Hole 12a Hole center 15a Front side reinforcement 16b Back side reinforcement 17 Reinforcement 18 Opening

Claims (9)

An insect repellent net comprising a flat net member having a plurality of holes provided in a film substrate.   The insect repellent net according to claim 1, wherein the film base is a resin film.   The plurality of holes are arranged on the net member in a straight line with a first pitch in the first direction, and are linear with a second pitch having the same length as the first pitch in a second direction orthogonal to the first direction. The insect repellent net according to claim 1, wherein the insect repellent net is arranged side by side.   The insect repellent net according to claim 1, wherein the plurality of holes are arranged such that distances between centers of two adjacent holes are the same.   The insect net according to any one of claims 1 to 4, wherein each hole has a circular shape.   5. The insect net according to claim 1, wherein each hole has a regular hexagonal shape and faces in the same direction.   The insect net according to any one of claims 1 to 6, wherein the net member including a plurality of holes has a mountain-shaped cross-sectional shape. A reinforcing member attached to a net member including a plurality of holes;
The insect repellent net according to any one of claims 1 to 7, wherein the reinforcing member is made of a frame member having an opening having a shape larger than the plurality of holes. A net member provided with a plurality of holes in the film substrate;
A sealing member connected to the net member,
The net house material is characterized in that the net member and the sealing member are made of the same film base material.

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