JP2004187677A - Screen pillar for preventing animal damage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen pillar for preventing animal damage, capable of being transported by being stacked with others in such a state as to be approximately flatly pressed and spread, and capable of being immediately restored to an original rectangular form, when the pillar is used in surrounding a young tree on a job site, and further capable of being simply stood up so as not to be fallen, even when the pillar is not bound to a support. <P>SOLUTION: This screen pillar for preventing the animal damage is made of a synthetic resin net, has the rectangular form, and is so structured that vertical straps each of which has an L-shaped cross-sectional form and is made of a non-rigid synthetic resin freely deformable and recoverable are arranged on four corner parts of the screen pillar. Further, the screen pillar for preventing the animal damage may be so structured that at least one of the corner parts of the screen pillar which is made of the non-rigid synthetic resin net and has the rectangular form is cut to have a horizontal incision, and then the cut corner part is made to be partially concaved to be formed into a concavity. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a net tube for protecting beast damage that protects young trees from feeding damage of wild animals.

  2. Description of the Related Art Conventionally, a young tree has been surrounded by a synthetic resin mesh cylinder to protect the young tree from damage by wild animals. The present applicant has also proposed a rat harm prevention mesh cylinder in which a rat repellent is contained in a medium density polyethylene resin mesh cylinder as shown in Patent Document 1 below. These net cylinders for preventing beast harm are produced by winding a synthetic resin net into a tubular shape at the site and connecting the overlapping side edges of the net with a binding wire or the like, or a tubular shape from the beginning. Made and transported to the site.

However, there is a problem that the work of winding the synthetic resin net into a cylindrical shape at the site and tying both side edges with a binding wire or the like is troublesome and takes considerable time and effort. Such a problem can be solved by making a synthetic resin net into a tube from the beginning and transporting it to the site.In that case, however, since the bulk of the net made of synthetic resin net is high, A new problem arises in that the amount that can be transported is reduced, and transport costs increase. However, if a large amount of net cylinders are stacked and transported in a state where they are almost flattened and spread, it becomes difficult to restore the original cylinder shape due to the net cylinder's habit, so let's fix the dare If so, a crack or the like may enter the bent portion, causing a risk of cutting. In addition, all of these mesh cylinders must be installed so that they do not fall down by tying them to a support standing along the young tree with a binding wire or the like, so that the installation work is unexpectedly troublesome. there were.
JP-A-6-247803

  The present invention has been made to address the above problems, and can be stacked in large quantities in a state of being spread substantially flat when transported, and can be immediately restored to the original cylindrical shape when surrounding the young tree at the site. The main solution is to provide a net cylinder for preventing animal damage. Another object of the present invention is to provide a net cylinder for preventing animal damage that can be easily erected so that the net cylinder does not fall down without being tied to a support.

  In order to solve the above problems, a first net cylinder for preventing animal damage according to the first aspect of the present invention is a non-woven fabric having an L-shaped cross-sectional shape at four corners of a square net-shaped net made of a synthetic resin net. A vertical band made of synthetic resin which is hard and can be freely deformed and restored is provided.

  In such a net cylinder for preventing animal damage, it is desirable to form a convex rib over the entire length of the surface of the vertical band. And it is desirable to form a notch in the horizontal direction in at least one vertical band of the corner portion of the net tubular body, and to form a concave portion by partially denting the vertical band inward. It is desirable to form it vertically symmetrically, or to form it in the vertical band of two corner parts which face each other diagonally in the mesh cylinder. Further, it is desirable to provide a non-rigid, deformable and restorable rectangular annular synthetic resin horizontal band at each of the upper end, lower end, and the intermediate portion of the mesh cylinder, and the synthetic resin net is made of a biodegradable resin. It is also desirable that the net consists of:

  Further, the second net cylinder for beast harm prevention of the present invention is provided with a lateral cut in at least one corner of a square tubular net made of a non-hard synthetic resin net, and the corner is formed. It is characterized in that a recess is formed by partially recessing.

  In such a net cylinder for beast harm prevention, it is desirable that the concave portion be formed vertically symmetrically at a corner portion, or formed at two corner portions of the net cylinder body that face each other diagonally.

  When the first beast-harm-preventing net tubular body of the present invention is pressed in one diagonal direction, a pair of longitudinal bands having an L-shaped cross section opposed in the diagonal direction are deformed substantially flat, and another diagonal line is formed. The other set of longitudinal bands opposing each other in the direction is deformed into a two-folded state, and the beast-harm-preventing net tubular body is pushed and spread substantially flat. Therefore, a large number of net cylinders for preventing animal damage can be stacked in a substantially flat state in which the nets are spread, and a large amount of the net cylinders for preventing animal damage can be transported to the site at once. Then, when installing the net cylinder for preventing animal damage around the young tree at the site, the shape of the vertical bands at the four corners of the net cylinder is only slightly modified by hand, and the vertical bands at the four corners are all the original L-shape. , The beast harm prevention net tubular body can be easily restored to the original square tubular shape. In addition, since the vertical bands at these four corners are vertical bands having an L-shaped cross-sectional shape that are strong and hard to break, the strength of the beast-harm-preventing net cylindrical body, particularly the refraction strength (buckling), is determined by these bands. Strength) is improved.

  In the first net belt for beast harm prevention of the present invention, the one in which the convex ribs are formed on the surface of the vertical band over the entire length, the waist of the vertical band is further strengthened and it is difficult to break, so that The refraction strength of the mesh cylinder is further improved.

  Also, in the first net cylinder for beast harm prevention of the present invention, a notch in the horizontal direction is provided in a vertical band at at least one corner portion of the net tube, and the vertical band is partially inwardly recessed. By forming a pillar along the inner surface of the longitudinal band and the outer surface of the recess, the pillar can be connected to the longitudinal band and the recess without connecting the pillar to the mesh cylinder with a binding wire or the like. It can be installed so as not to fall down very easily while sandwiched between the outside and the inside. In particular, the one in which the concave portion is formed vertically symmetrically in the vertical band can be stably installed with the upper and lower portions of the column interposed therebetween, and two corner portions opposed to each other in the diagonal direction of the net cylindrical body. Can be installed more stably by inserting two columns.

  Furthermore, in the first net cylinder for preventing animal damage of the first aspect of the present invention, the upper end, the lower end, and the intermediate portion of the net cylinder each have a non-rigid, deformable and restorable rectangular band made of synthetic resin. In the provision, the horizontal cylindrical band reinforces the net cylindrical body, and the horizontal band and the vertical bands at the four corners form a frame that forms the framework of the net cylindrical body. , Rigidity and strength are further improved. In addition, since the horizontal band is non-rigid and can be freely deformed and restored like the vertical band, it does not hinder the net tubular body from being spread substantially flat, but rather restores the mesh tubular body. In order to improve the property, the net cylinder for beast harm prevention can be more easily restored to the original square tubular shape.

  Further, in the net net for preventing animal damage of the first embodiment of the present invention, when a net made of a biodegradable resin is adopted as the synthetic resin net, since the net is decomposed until the young tree grows large, the animal Eliminating the work to remove the harm prevention net cylinder is not required.

  On the other hand, the net cylinder for preventing animal damage according to the second aspect of the present invention has a square tubular net made of a non-rigid synthetic resin net. When pressed diagonally, a pair of corners opposed in the diagonal direction is deformed substantially flat, and another pair of corners opposed in the other diagonal direction is deformed into a folded state. Thus, the net cylinder for beast harm prevention is spread substantially flat. Therefore, a large number of net cylinders for preventing animal damage can be stacked in a substantially flat state in which the nets are spread, and a large amount of the net cylinders for preventing animal damage can be transported to the site at once. When the net cylinder for preventing animal damage is installed around the young tree at the site, if the four corners of the net cylinder are manually corrected, the net cylinder made of non-rigid synthetic resin net is The corners at the four corners are easily restored to the original right-angled shape, and there is no possibility that cracks or the like will be formed in the corners.

  In this second net for preventing animal damage, at least one corner of the net is provided with a notch in the lateral direction, and this corner is partially recessed inward to form a recess. By inserting the support along the inner surface of the part and the outer surface of the recess, the support is sandwiched between the vertical band and the recess from the outside and the inside without connecting the support to the mesh cylinder with a binding wire etc. It can be installed so as not to fall down very easily. In particular, the concave portion formed vertically symmetrically at the corner portion can be installed stably with the upper and lower portions of the column interposed therebetween, and the two corner portions opposed to each other in the diagonal direction of the mesh cylinder body Can be more stably installed by inserting two columns.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these embodiments.

  FIG. 1 is a perspective view of a net cylinder for beast harm prevention according to an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of the net cylinder for beast harm prevention, and FIG. FIG. 4 is a partially cutaway front view showing a use state of the net cylinder for preventing beast damage.

  This net cylinder 10 for beast harm prevention is provided with a vertical band 2 having an L-shaped cross section at the four corners of a square cylindrical net tube 1 made of a synthetic resin net over the entire length. is there.

  This mesh cylinder 1 is formed by continuously extruding a synthetic resin warp from an extruder, intermittently extruding a synthetic resin weft from an extruder, and fusing the warp and the weft at an intersection thereof. Is formed into a square tube shape. The specific size of the net tube body 1 varies depending on the size of the young tree, etc., but the general-purpose size has a square tube having a side length of about 12 to 30 cm and a height of about 60 to 200 cm. It is. The mesh of the mesh cylinder 1 preferably has a size of about 0.2 to 1 cm on one side, and a mesh of such a size allows the mesh cylinder 1 to be well ventilated. In addition, it is easy to cause a disease, and as described later, it becomes easy to perform a work of tying to a support through a binding wire in the mesh of the mesh cylinder 1.

  Although the pitch of the warp and the pitch of the weft of the synthetic resin net for producing the net tubular body 1 may be the same, it is preferable to make the pitch of the warp smaller than the pitch of the weft to increase the number of warps. The refraction strength (buckling strength) of the net cylinder 1 can be improved.

  The net cylinder 1 is made of a general-purpose thermoplastic resin net, but is preferably made of a biodegradable resin net among thermoplastic resins, and is preferably made of such a biodegradable resin net. When the net cylinder 1 is manufactured by the method described above, the net cylinder 1 is decomposed before the young tree grows large, so that the withdrawal work of the beast damage preventing net cylinder 10 becomes unnecessary.

  On the other hand, the vertical band 2 provided at the four corners of the mesh cylinder 1 is a non-rigid, deformable and restorable synthetic resin vertical band having an L-shaped cross-sectional shape. As shown in FIG. 2, a plurality of (four in FIG. 2) convex ribs 2a are formed on the surface of the vertical band 2 over the entire length. In the case of the vertical band 2 having an L-shaped cross section and a convex rib 2a formed on the surface, the vertical band 2 is strong and hard to break. When provided in the portion, it is possible to obtain a beast harm prevention net tubular body 10 having high strength, particularly high refraction strength (buckling strength).

  Examples of the non-hard synthetic resin which can be freely deformed and restored as the material resin of the longitudinal band 2 include olefin resins such as polyethylene and polypropylene, and polyethylene terephthalate [terephthalic acid has ethylene glycol and 1,4-glycol as glycol components. Polyester resins such as PETG and PCTG (both also include trade names of Eastman Chemical Co.) obtained by polycondensation of cyclohexane dimethanol, and vinyl resins such as polyvinyl chloride are used.

  The thickness of the vertical band 2 is preferably about 0.1 to 1.0 mm, and if it is thicker than 1.0 mm, the vertical band 2 becomes substantially flat when the When it is thinner than 0.1 mm, the waist of the vertical band 2 becomes weak, and not only the refraction strength of the beast harm-preventing net tubular body 10 decreases, but also the resilience decreases. Will do.

  As means for providing the vertical band 2 at the corner portion of the mesh cylinder 1, means for overlapping the vertical band 2 at the corner portion of the mesh cylinder 1 and heat welding as in this embodiment is preferably employed. However, the present invention is not limited to this. For example, means for bonding using an adhesive may be employed. These vertical bands 2 may be fixed from the outside to the corners of the mesh cylinder 1 as in the embodiment shown in FIG. 1, or may be fixed from the inside.

  When the longitudinal band 2 is formed of the same resin as the mesh cylinder 1, when the mesh cylinder 1 is extruded into a cylindrical shape, that is, the warp of the synthetic resin is continuously extruded from an extruder, and the synthetic resin is synthesized. When a cylindrical net tubular body 1 is formed by intermittently extruding a resin annular weft and welding it to a warp, a portion to be a corner where a warp band should be provided is replaced with a synthetic resin instead of a warp. Are continuously extruded in a band shape to form a flat vertical band, and the flat vertical band is shaped into an L-shaped cross section, thereby forming the rectangular tube-shaped net tubular body 1 and simultaneously forming the vertical band having an L-shaped cross section. 2 are preferably provided at four corners of the mesh cylinder 1. In this case, there is an advantage that the net cylinder 10 for preventing beast damage can be efficiently mass-produced in a single molding step.

  As shown in FIG. 3, when the beast harm prevention net cylindrical body 10 having the above-described configuration is pressed in one diagonal direction X, a pair of longitudinal bands 2 having an L-shaped cross section opposed to each other in the diagonal direction X. (2x) and 2 (2x) are deformed to a substantially flat state, and another pair of longitudinal bands 2 (2y) and 2 (2y) having an L-shaped cross section facing each other in the diagonal direction Y are formed. It is deformed into a folded state, and the beast harm-preventing net cylinder 10 is pushed and spread substantially flat. Accordingly, a large number of net cylinders 10 for preventing beast damage can be stacked at a time, and a large number of net cylinders 10 for preventing beast damage can be transported to the site at one time. Then, when the shapes of the vertical bands 2 (2x), 2 (2x), 2 (2y), 2 (2y) at the four corners of the net cylinder 1 are slightly modified by hand at the site, all of these vertical bands are Since the shape is restored to the cross-sectional shape, the net cylinder 10 for beast harm prevention can be easily restored to the original rectangular tube shape.

  The beast-harm-preventing net tubular body 10 restored to the original square tubular shape as described above is installed around the young tree 3 as shown in FIG. 4, and is opposed to the net tubular body 10 in the diagonal direction. It is connected and fixed by a binding wire 5 to columns 4, 4 erected inside the corner portion. When the young tree 3 is surrounded by the net tube 10 for preventing animal damage in this way, the invasion of wild animals into the net tube body is prevented, so that feeding damage by wild animals can be prevented. Since the net tube 10 for harm prevention is well ventilated, the young tree 3 is hardly damaged by diseases and pests, and the leaves of the young tree 3 do not protrude from the mesh.

  In addition, the number of the support columns 4 may be one, two, three, or four, and may be provided outside the beast-harm-preventing net cylinder 10.

  FIG. 5 is a perspective view of a net cylinder for beast harm prevention according to another embodiment of the present invention.

  The net cylinder 11 for beast harm prevention is provided with non-rigid, deformable and restorable rectangular bands 6, 6, 6 made of synthetic resin at the upper end, lower end, and intermediate portion of the net cylinder 1, respectively. Further, the material resin and thickness of the horizontal band 6 are the same as the material resin and thickness of the vertical band 2 described above.

  The horizontal band 6 may be fixedly provided at the upper end, the lower end, and the intermediate portion of the net tubular body 1 by means such as heat welding or bonding, but the horizontal band 6 is made of the same synthetic resin as the net tubular body 1 and the vertical band 2. When it is provided by the following method, it is preferable to simultaneously form the mesh cylinder 1, the vertical band 2, and the horizontal band 6 by the following method. That is, when the synthetic resin warp is continuously extruded from the extruder and the annular weft of the synthetic resin is intermittently extruded and welded to the warp to form the cylindrical net tube body 1, As described above, at the corner portion where the vertical band 2 is to be provided, a synthetic resin is continuously extruded in a belt shape instead of the warp to form a flat vertical band, while at the position where the horizontal band 6 is to be provided. By continuously extruding a synthetic resin into a cylindrical shape instead of an annular warp to form a cylindrical horizontal band, and shaping the cylindrical horizontal band and the flat vertical band into an L-shaped cross section. It is preferable to provide a vertical band 2 having an L-shaped cross section and a rectangular horizontal band 6 at the same time as the formation of the rectangular tube-shaped mesh tube 1. In this way, there is an advantage that the net cylinder 11 for beast damage prevention can be efficiently mass-produced in a single molding step.

  Other configurations of the net cylinder 11 for preventing beast harm are the same as those of the net cylinder 10 for preventing beast harm, so the same reference numerals are given to the same members in FIG. 5 and the description is omitted.

  When the rectangular annular horizontal band 6 is provided at each of the upper end, the lower end, and the intermediate portion of the net tubular body 1 like the net tubular body 11 for beast harm prevention, the net tubular body 1 is reinforced by the horizontal band 6. At the same time, since the horizontal band 6 and the vertical bands 2 at the four corners form a frame serving as the skeleton of the net tubular body 1, the shape retention, rigidity, strength, and the like of the beast harm prevention net tubular body 11 are further improved. In addition, since the horizontal band 6 is non-rigid and can be freely deformed and restored like the vertical band 2, it does not hinder the net tubular body 1 from being spread substantially flat. Since the function of improving the resilience of the body 1 is improved, the beast harm-preventing mesh tubular body 11 can be more easily restored to the original square tubular shape.

  FIG. 6 is a perspective view of a net cylinder for beast harm prevention according to still another embodiment of the present invention, FIG. 7 is a side view showing an installation state of the net for harm prevention, and FIG. It is an expanded sectional view along the -A line.

  The net cylinder 12 for beast harm prevention is devised in the vertical bands 2 and 2 at two corners opposed to each other in the diagonal direction of the net cylinder 1. That is, a pair of upper and lower lateral cuts are provided at the upper and lower portions of each of the L-shaped vertical bands 2 and 2 at intervals of about 5 to 20 cm, and a portion between the upper and lower pair of cuts is formed inside. In this case, two concave portions 21 are formed at upper and lower portions of the vertical bands 2 and 2 by indentation into an inverted L shape, and a space between the concave portion 21 and the vertical band 2 is defined as a column insertion space 7.

  The other configuration of the net cylinder 12 for preventing beast harm is the same as that of the net cylinder 10 for preventing beast harm, so the same reference numerals are given to the same members in FIG. 6 and the description is omitted.

  As shown in FIGS. 7 and 8, such a net cylinder 12 for preventing beast damage includes two pillars 4, 4 formed on the inner surfaces of longitudinal bands 2, 2 facing each other in a diagonal direction of the net cylinder 1. By simply inserting the columns 4 along the sides and the outer surfaces of the recesses 21 and 21 formed in the upper and lower portions of the vertical band into the column insertion space 7, each of the columns 4 is separated by the vertical band 2 and the concave portion 21. It can be installed so that it does not fall down very easily while being sandwiched from the inside. Therefore, as shown in FIG. 4, there is no need to connect the mesh cylinder 1 and the support 4 with the binding wire 5 or the like, so that the installation work becomes easy.

  In the embodiment of FIG. 6, concave portions 21 are respectively formed on the upper and lower portions of two longitudinal bands 2 and 2 facing each other in a diagonal direction. It is sufficient if it is formed at the location. However, since the standing stability of the net tubular body 1 is not very good at one place, the concave portions 21 and 21 are formed on the upper and lower portions of the two vertical bands 2 and 2 in the diagonal direction as in the embodiment of FIG. It is preferable to insert the two columns 4 and 4 so that the columns 4 and 4 can be installed more stably with the upper and lower portions sandwiched therebetween. It goes without saying that one or more recesses 21 may be formed in three or four vertical bands 2 and supported by three or four columns.

  FIG. 9 is a perspective view of a net cylinder for beast harm prevention according to still another embodiment of the present invention.

  The net cylinder body 13 for preventing beast harm is provided with a pair of corner portions opposed to each other in a diagonal direction of the square cylinder-shaped net cylinder body 1 made of a non-hard synthetic resin net. A pair of upper and lower lateral cuts are provided at intervals, and a portion between the pair of upper and lower cuts is recessed inwardly into an inverted L-shape so that the concave portion 21 is formed on a pair of opposing corner portions. The space between the concave portion 21 and the corner portion is defined as a column insertion space 7.

  The non-hard synthetic resin net is a net made of a synthetic resin such as an olefin resin, a polyester resin, and a vinyl resin, which can be freely deformed and restored, as in the above-described vertical belt, and one side of the mesh is 0.2. Those having a size of about 1 cm are preferably used. Also, a net in which the buckling strength is increased by making the pitch of the warp smaller than the pitch of the weft and increasing the number of warps is also preferably used. The preferred dimensions of the mesh cylinder 1 are such that the length of one side of the square cylinder is about 12 to 30 cm and the height is about 60 to 200 cm.

  In such a beast harm-preventing net tubular body 13, since the square tubular net tubular body 1 is made of a non-rigid synthetic resin net, when it is pressed in one diagonal direction, it faces in the diagonal direction. One set of corners deforms substantially flat, and another set of diagonally opposite corners deforms into two folds, and the beast harm prevention net tubular body becomes almost flat. In a spread state, a large number of beast damage prevention net cylinders 13 are stacked in a substantially flattened state, and a large amount of beast damage prevention net cylinders 13 can be transported to the site at once. it can. Then, when the net cylinder 13 for beast harm prevention is set around the young tree at the site, if the four corners of the net cylinder 1 are corrected by hand, the net cylinder 1 made of a non-hard synthetic resin net can be used. The corners of the four corners can be easily restored to the original right-angled shape, and there is no possibility that cracks or the like will be formed in the corners. In addition, the net cylinder body 13 for preventing beast harm has two struts in the strut insertion space 7 along the inner surface of a pair of opposing corners forming the recess 21 and the outer surface of the recess 21. By inserting each, it can be installed very easily and stably.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the net cylinder body for beast damage prevention which concerns on one Embodiment of this invention. It is a partially expanded perspective view of the net cylinder body for beast damage prevention. It is a partial perspective view in the state where the beast harm prevention net cylindrical body was expanded. It is a partially broken front view which shows the use condition of the net cylinder for beast harm prevention. It is a perspective view of the net cylinder body for beast harm prevention concerning other embodiments of the present invention. It is a perspective view of a net cylinder for beast harm prevention according to yet another embodiment of the present invention. It is a side view which shows the installation state of the net cylinder body for beast damage prevention. FIG. 8 is an enlarged sectional view taken along line AA of FIG. 7. It is a perspective view of a net cylinder for beast harm prevention according to yet another embodiment of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Netting cylinder 2 Vertical band 2a Convex rib 21 Depression 3 Young tree 6 Horizontal band 7 Prop insertion space 10,11,12,13

Claims (10)

  A non-rigid, deformable and restorable synthetic resin vertical band having an L-shaped cross-sectional shape is provided at the four corners of a square tubular net made of a synthetic resin net. Net cylinder for beast harm prevention.   The net cylinder for beast harm prevention according to claim 1, wherein a convex rib is formed on the surface of the vertical band over the entire length.   The beast according to claim 1 or 2, wherein a cut is made in a horizontal direction in a vertical band at at least one corner portion of the net tubular body, and the vertical band is partially recessed to form a concave portion. Harm prevention net cylinder.   4. The net cylinder for beast harm prevention according to claim 3, wherein the recess is formed symmetrically in a vertical band.   The net cylinder for beast harm prevention according to claim 3 or 4, wherein the concave portion is formed in a vertical band of two corner portions opposed to each other in a diagonal direction of the net cylinder.   6. A rectangular annular synthetic resin-made horizontal band which is non-rigid and freely deformable and restorable is provided at each of an upper end, a lower end, and an intermediate portion of the net tubular body. A net cylinder for preventing animal damage according to the above-described item.   7. The net cylinder for beast harm prevention according to claim 1, wherein the synthetic resin net is a net made of a biodegradable resin.   A beast damage, characterized in that at least one corner portion of a square tubular mesh body made of a non-rigid synthetic resin net is provided with a lateral cut, and the corner portion is partially recessed to form a recess. Prevention mesh cylinder.   9. The net cylinder for beast harm prevention according to claim 8, wherein the concave portion is formed symmetrically at a corner portion.   The beast harm prevention net cylinder according to claim 8 or 9, wherein the recess is formed at two corners of the net cylinder facing each other in a diagonal direction.

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