Material for protecting trees

Abstract

To provide a material for protecting trees which does not cause an adverse effect to growth of a tree, and in which slip-down when winding to a tree or after being wound to a tree is hard to occur.SOLUTION: A material for protecting trees which is used by wounding around a tree is constituted of a woven / knitted fabric having air permeability, and a fuzzy yarn being a different kind of material, or fuzzy yarn is used for the woven / knitted fabric, and the fuzzy yarn is exposed on a back side of the woven / knitted fabric abutted to at least a tree surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a material for protecting trees from animals and the like. [Background technology]

[0002] In forests, Asiatic black bears are known to cause damage by stripping the bark of cedar and cypress trees to feed on the soft parts of the trunks and the sap, and in recent years, similar damage caused by Japanese deer has also been occurring frequently. Trees with damaged trunks not only become more susceptible to withering, but also lose their value as lumber, causing great losses for forestry workers.

[0003] Therefore, although it is necessary to take measures to prevent the above-mentioned bark stripping, the animal's habitat is often on sloping mountain forests with poor footing, and materials must be transported manually to the work site, so the materials needed to be compact and easy to transport.To date, tape or film-type materials made of synthetic resin or biodegradable resin that are wrapped around trees have been used.

[0004] However, because the above-mentioned tape and film-type materials have low breathability, wrapping them tightly around the trunk of a tree can have a negative impact on tree growth. Also, because the surfaces of the above-mentioned tape and film-type materials are smooth, the tape or film often slips off the tree during or after wrapping, requiring re-wrapping.

[0005] Meanwhile, net-type materials made of synthetic resin or biodegradable resin fibers have also been known in the past (see, for example, Patent Documents 1 to 3), but even among these conventional net-type materials, those that use synthetic resin or biodegradable resin film yarn or monofilament yarn are prone to slipping down because the yarn itself is slippery. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-211764 [Patent Document 2] Utility Model Registration No. 3159803 [Patent Document 3] Japanese Patent Application Laid-Open No. 2004-229564 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to solve the problems of the prior art described above, and in summary, to provide a tree protection material that does not adversely affect tree growth and is unlikely to slip off when or after being wrapped around a tree. [Means for solving the problem]

[0008] As a means for solving the above problems, the inventors have developed a tree protection material that is used by wrapping it around trees, which is made of a breathable woven or knitted fabric, and which uses a fluffy yarn or fluffy yarn of a different material in the woven or knitted fabric, and which has the fluffy yarn exposed at least on the back side of the woven or knitted fabric that comes into contact with the surface of the tree (the effects will be described later).In this specification, "fluffy yarn" refers to all yarns that have fluffing, and includes bulky yarns such as wooly yarns, multifilament yarns, spun yarns, etc.

[0009] In the present invention, by making the exposed area of ​​the fluff yarn on the back surface of the woven / knitted fabric larger than the exposed area on the front surface of the woven / knitted fabric, the material can be more effectively prevented from slipping off when wrapped around a tree.

[0010] In the present invention, by forming selvage portions using fluffy yarn on both sides of the width of the woven or knitted fabric, the selvage portions enhance the effect of preventing the material from slipping off when wrapped around a tree, and also prevent the fabric from floating or losing its shape.

[0011] In the present invention, by forming a pile section on the surface side of the entire knitted or woven fabric or on the selvage section, when the slip-off effect due to the fluff on the back side is weak, the surface side of the material can be wrapped towards the tree and used reversibly.

[0012] In the present invention, by forming a strip-shaped structure using fluffy yarn in the longitudinal direction at the center of the width direction of the woven or knitted fabric, the strip-shaped structure enhances the effect of preventing the material from slipping off when wrapped around a tree, and also prevents the fabric from floating or losing its shape. In addition, the ends of the material can be easily divided by cutting the strip-shaped structure or pulling out the yarn.

[0013] In the present invention, by making the fluffy yarn float in a convex shape on the back side of the woven or knitted fabric, the fluffy yarn in a convex shape can be more easily caught on the surface of the tree, thereby improving the slippage prevention effect.

[0014] In the present invention, the woven or knitted fabric is a warp knitted net in which chain stitch structures arranged at predetermined intervals in the width direction are connected by insertion yarns, and in the basic structure of the warp knitted net, it is preferable to use fluff yarns for the chain stitch structures and film yarns for the insertion yarns, and further to form square meshes by hanging the insertion yarns between adjacent chain stitch structures every predetermined course. This suppresses movement of the insertion yarns, making it less likely for the fabric to lose its shape, such as by shrinking in width, when pulled. [Effects of the Invention]

[0015] In the present invention, the tree protection material is made from a breathable woven / knitted fabric, and by exposing the fluffy yarn on at least the back side of the woven / knitted fabric that comes into contact with the tree, the fluff of the fluffy yarn catches (sticks) on the surface of the tree, preventing the material from slipping off and allowing the material to remain wrapped around the tree. This allows the tree protection material to be wrapped smoothly around the tree and can be maintained in this wrapped state for a long period of time.

[0016] In addition, in the present invention, by using film yarns with a large surface area in the woven or knitted fabric, the color and luster of the film yarns can be used to enhance the animal repellent effect.Furthermore, because the tree protection material of the present invention is made of a breathable woven or knitted fabric, there is no need to worry about adverse effects on tree growth even when it is wrapped tightly around the trunk of a tree. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a plan view showing a tree protection material according to a first embodiment of the present invention. FIG. [Figure 2] 1 is a structural diagram of a tree protection material according to a first embodiment of the present invention. FIG. [Figure 3] 1A and 1B are photographs and explanatory diagrams showing the state in which a tree protection material according to a first embodiment of the present invention is wrapped around a tree. [Figure 4] FIG. 2 is an enlarged view showing the state of the chain stitch structure on the front and back surfaces of the tree protection material according to the first embodiment of the present invention. [Figure 5] 1A is a schematic diagram of a tree protection material according to a first embodiment of the present invention, FIG. 1B is a schematic diagram of a strip-shaped tissue cut, and FIG. 1C is a schematic diagram of a state in which the end of the roll is divided. [Figure 6] 1A and 1B are schematic diagrams showing a tree protection material according to a second embodiment of the present invention, in which (a) is a plan view, and (b) and (c) are side views. [Figure 7] 1A and 1B are schematic diagrams showing tree protection materials according to third and fourth embodiments of the present invention, in which (a) and (c) are plan views, and (b), (d), and (e) are side views. [Figure 8] 10A and 10B are schematic diagrams showing a tree protection material according to a fifth embodiment of the present invention, in which (a) is a plan view and (b) is a side view. DETAILED DESCRIPTION OF THE INVENTION

[0018] "First embodiment" A first embodiment of the present invention will be described with reference to Figures 1 to 5. In the figures, the symbol N indicates a tree protection material, and the symbol W indicates a tree. The symbol 1 indicates the warp threads of the woven net, and the symbol 2 indicates the connecting threads that connect the chain stitch structures of the warp-knitted net. The symbol E indicates the selvage of the warp-knitted net, and the symbol B indicates the strip-shaped structure of the woven net.

[0019] "Composition of tree protection materials" [1] Basic composition of tree protection materials In this embodiment, as shown in Figures 1 and 2, tree protection material N is made from a breathable warp knitted net, and fluffy yarns 11 are used as warp yarns 1 of the warp knitted net, and chain stitch structures arranged at predetermined intervals in the width direction of the material are formed by these fluffy yarns 11. Adjacent chain stitch structures of the warp knitted net are connected by insertion yarns 2, and film yarns 21 made of a different material from the warp yarns 1 are used as insertion yarns 2 of this warp knitted net.

[0020] As a result, the fluffy yarns 11, which are the warp threads 1, are exposed on the back side of the tree protection material N that comes into contact with the tree surface, so that when the tree protection material N is spirally wound around the tree W as shown in Figure 3(a), the fluffy yarns 11 exposed on the back side get caught on the bark, preventing it from slipping off. This not only makes it possible to smoothly wind the tree protection material N, but also allows the wound state to be maintained for a long period of time.

[0021] [2] About the structure and yarn of knitted fabrics [2-1] Weave of knitted fabric Next, the components of the tree protection material N will be described. In this embodiment, a net-like (mesh-like) warp knitted fabric is used as the woven or woven fabric that constitutes the tree protection material N, as shown in Fig. 1. Specifically, as shown in Fig. 2, warp yarns 1 form chain stitch structures arranged at predetermined intervals in the width direction (the direction perpendicular to the length direction of the warp knitted fabric), and insertion yarns 2 are hung between adjacent chain stitch structures to connect the chain stitch structures to form a warp knitted net.

[0022] In this embodiment, in the basic weave of the warp knitted net (excluding the ear portions on both sides and the central band-shaped weave described below), the insertion yarns 2 are crossed over adjacent chain stitch structures at every predetermined course to form square meshes, as shown in Figures 1 and 2. This makes it possible to suppress the movement of the insertion yarns 2, which makes it less likely for the warp knitted net to lose its shape, such as by shrinking the fabric width when wound.

[0023] Furthermore, the woven / knitted fabric is not limited to a net-like material as long as it is breathable, and the mesh shape of the woven / knitted net is not particularly limited, and may be triangular, quadrangular (square or diamond), hexagonal (hexagonal), or the like. The type of net is also not particularly limited, and may be knotless or knotted. The weave of the warp knitted fabric may be a denbigh knit, cord knit, atlas knit, tricot knit, raschel knit, double raschel knit, or the like, and a weft knitted fabric may also be used. In addition, a woven fabric may be used instead of a knitted fabric, and for example, a plain weave, twill weave, herringbone weave, dutch weave, or multi-layer weave may be used. When a woven fabric is used in the woven / knitted fabric, a fluffy yarn and a film yarn are used as the warp yarn, weft yarn, and insert yarn.

[0024] Furthermore, in this embodiment, a warp knitted net is used which has excellent shape stability and is resistant to deformation, but it is also possible to use a woven or knitted fabric which is stretchable in the lengthwise, widthwise or diagonal directions of the tree protection material N. In this case, the tree protection material N can be made to follow the growth of the tree W, so that the tree protection material N wrapped around the tree W is less likely to come undone due to the growth of the tree W.

[0025] [2-2] Exposed area of ​​fluffy yarn In the warp knitted net of this embodiment, which has the structure shown in Fig. 2, the sinker loops of the chain stitch structure are exposed on the front side, as shown in Fig. 4(a), and the needle loops of the chain stitch structure are exposed on the back side, as shown in Fig. 4(b). As a result, in a single chain stitch structure, the area of ​​the fluffy yarns 11 exposed on the front side is the equivalent of one yarn, while the area of ​​the fluffy yarns 11 exposed on the back side is the equivalent of two yarns, so the exposed area of ​​the fluffy yarns 11 on the back side is larger than that on the front side. In other words, the area of ​​the fluffy yarns 11 on the back side of the warp knitted net that comes into contact with the tree W is larger than the area on the front side, thereby improving the effect of preventing slippage due to fluff.

[0026] [2-3] Ears As shown in Figures 1 and 2, the warp knitted net of this embodiment has small mesh selvages E on both sides of the width of the fabric, using fluffy yarns 11 and 22 as the warp yarns 1 and insertion yarns 2. This increases the prevention effect of slipping down when tree protection material N is wrapped around a tree W, as the selvages E, which have a large exposed area of ​​fluffy yarns 11 and 21, come into contact with the tree. In addition, the selvages E on both sides of the fabric catch on the tree W, preventing the fabric from floating or losing its shape.

[0027] In this embodiment, the selvage E is formed from four chain stitch structures and the insert yarn 2 connecting them, but the number of chain stitch structures and the size of the mesh can be changed as needed. For example, the number of chain stitch structures can be increased to increase the area of ​​the selvage E, or the number of chain stitch structures can be decreased to increase the mesh size of the selvage E.

[0028] Furthermore, a pile section can be formed on the entire warp knitted net or on the front side of the selvage E, allowing the tree protection material N to be used reversibly (not shown). In this case, when the fluff on the back side of the warp knitted net is not effective in preventing it from sliding down, a sufficient sliding effect can be obtained by wrapping the front side of the warp knitted net toward the tree W so that the pile section on the front side catches on the bark.

[0029] [2-4] Banded structure In this embodiment, as shown in Figures 1 and 5(a), a strip-shaped structure B, which uses fluffy yarns 11 and 22 as the warp yarns 1 and insertion yarns 2, is formed in the longitudinal direction at the center of the width of the fabric. As a result, when the tree protection material N is wrapped around a tree W, the strip-shaped structure B, which has a large exposed area of ​​the fluffy yarns 11 and 22, can enhance the prevention of slipping. Furthermore, as with the selvage portions E, the strip-shaped structure B can be caught on the tree W, preventing the fabric from floating or losing its shape. In this embodiment, the mesh size of the strip-shaped structure B is the same as that of the selvage portions E, but the mesh size can be changed as appropriate.

[0030] Furthermore, at the longitudinal end of the warp knitted net, the end of the tree protection material N can be divided by cutting the belt-shaped tissue B or pulling out the threads as shown in Figures 5(b) and 5(c). As a result, as shown in Figure 3(b), the divided part S at the end of the tree protection material N can be made into a string and tied to the tree W, thereby fixing the material to the tree W. Also, as shown in Figure 3(c), the divided part S of the tree protection material N can be fixed by covering the roots G of the tree W and inserting a stake P, thereby protecting the roots G of the tree W.

[0031] In this embodiment, the dividing section S of the tree protection material N is divided into two in the width direction of the fabric, but if the fabric width of the tree protection material N is large, multiple belt-shaped structures B can be formed in the center to form three or more dividing sections S. Cutting can also be made easier by using a thin fluffy yarn 22 as the insertion yarn 2 of the belt-shaped structure B. Changing the type and color of the yarn of the belt-shaped structure B can also make it easier to check the center of the fabric and the cutting position.

[0032] [2-5] Yarn for knitted fabrics In this embodiment, the yarns of the woven or knitted fabric are woolly yarns obtained by subjecting PET or PP filament yarns to a woolly treatment as the fluffy yarns 11 and 22 of the warp yarn 1 and the insert yarn 2, and PE film yarns (film slit yarns) as the film yarns 21 of the insert yarn 2, but the types of fluffy yarns and film yarns are not limited to these. Specifically, the fluffy yarns can be multifilament yarns that have been bulked, other multifilament yarns with fuzz, spun yarns (spun yarns), etc. Furthermore, the film yarns can also be film yarns made of synthetic resins other than PE or film yarns made of biodegradable resins (such as polylactic acid resin).

[0033] Furthermore, the fluffy yarns can be synthetic fibers other than PET and PP (e.g., polyethylene, polypropylene, polyester, nylon, acrylic, etc.), semi-synthetic fibers (e.g., acetate, etc.), regenerated fibers (e.g., rayon, cupra, etc.), or natural fibers (e.g., cotton, linen, etc.). Different types of yarns can also be used in combination. In this embodiment, fluffy yarns 11 are used as warp yarns 1, but fluffy yarns 11 can also be used in combination with film yarns.

[0034] [2-6] Rolled tree protection materials The tree protection material N is preferably used in the form of a roll R wound around a roll core K (such as a cardboard tube) as shown in Figure 5(c). By gripping this roll core K with both hands and turning it around the tree, the tree protection material N is pulled out from the roll R, and the pulled tree protection material N can be wrapped spirally around the tree. A known holding device can also be used.

[0035] Second Embodiment A second embodiment of the present invention will be described with reference to Fig. 6. In this embodiment, as shown in Fig. 6(a), film yarn 21 and fluffy yarn 22, which are different materials, are used as the insert yarns 2 of the warp knitted net, and the film yarn 21 and fluffy yarn 22 are cross-hung between adjacent chain stitch structures. Furthermore, by overlapping the film yarn 21 so that the fluffy yarn 22 is on the back side of the warp knitted net (the side that contacts the tree), the fluffy yarn 22 is raised in a convex shape (loose state) on the back side of the warp knitted net, as shown in Figs. 6(b) and 6(c). As a result, when the raised floating yarn portion L1 is brought into contact with the surface of the tree and tree protection material N is wrapped around it, the floating yarn portion L1 gets caught on the bark, preventing it from slipping off.

[0036] "Third Embodiment" A third embodiment of the present invention will be described with reference to Figures 7(a) and (b). As shown in Figure 7(a), the warp knitted net of this embodiment uses a film yarn 21 as the insert yarn 2 in the center in the width direction, and a fluffy yarn 22 as the insert yarn 2 on both sides. This increases the exposed area of ​​the fluffy yarn 22 on both sides of the fabric, similar to the selvage portions of the first embodiment, thereby improving the slip-down effect. Furthermore, in this embodiment, as shown in Figure 7(b), the insert yarns 2 on both sides of the fabric using the fluffy yarn 22 are raised in a convex shape on the back side of the warp knitted net to form floating yarn portions L1, thereby providing the same slip-down prevention effect as in the second embodiment.

[0037] "Fourth embodiment" A third embodiment of the present invention will be described with reference to Figures 7(c), (d), and (e). The warp knitted net of this embodiment uses fluffy yarns as second warp yarns 12 as shown in Figure 7(c), and these second warp yarns 12 are exposed in a convex shape on the back surface of the fabric due to the swelling of the yarns as shown in Figure 7(d), or as pile portions L2 as shown in Figure 7(e). This makes it easier for the fluffy yarns exposed on the back surface of the fabric to come into contact with the tree W when tree protection material N is wrapped around the tree W, thereby improving the effect of preventing the material from slipping off.

[0038] Fifth Embodiment A fifth embodiment of the present invention will be described with reference to Fig. 8. In the warp knitted net of this embodiment, as shown in Fig. 8(a), a fluffy yarn is used as the second insertion yarn 23, and by bridging this second insertion yarn 23 between multiple chain stitch structures, the second insertion yarn 23 is exposed in a convex shape on the back surface of the fabric due to the swelling of the yarn, as shown in Fig. 8(b). As a result, when tree protection material N is wrapped around a tree W, the fluffy yarn exposed on the back surface of the fabric is more likely to come into contact with the tree W, thereby improving the effect of preventing the material from slipping off. [Explanation of symbols]

[0039] 1 Warp threads 11 Fluff yarn 12 Second Warp 2 Insertion thread 21 Film thread 22 Fluff yarn 23 Second insertion thread N Tree protection materials E ear B. Banded tissue R Roll K Roll Core S division part L1 floating thread section L2 pile section C chain stitch structure W Tree G Root P pile

Claims

1. This tree protection material is used by wrapping it around a tree, and is made of a breathable woven or knitted fabric, and the woven or knitted fabric uses a film yarn and a fluffy yarn, which are different materials, and the fluffy yarn is exposed at least on the back side of the woven or knitted fabric that comes into contact with the surface of the tree.

2. 2. The tree protecting material according to claim 1, wherein the exposed area of ​​the fluff yarns on the back surface of the woven or knitted fabric is larger than the exposed area on the front surface of the woven or knitted fabric.

3. 3. The tree protection material according to claim 1, wherein ears made of fluff yarn are formed on both sides of the woven or knitted fabric in the width direction.

4. 4. The tree protection material according to claim 3, wherein a pile portion is formed on the entire surface of the knitted or woven fabric or on the surface of the selvage portion.

5. 3. The tree protection material according to claim 1, wherein a strip-shaped weave using fluff yarn is formed in the longitudinal direction at the center of the width of the woven or knitted fabric.

6. 3. The tree protection material according to claim 1, wherein the fluff yarns are in a convex floating state on the back side of the woven or knitted fabric.

7. 3. A tree protection material as described in claim 1 or 2, wherein the woven / knitted fabric is a warp knitted net in which chain stitch structures arranged at predetermined intervals in the width direction are connected by insertion yarns, and in the basic structure of the warp knitted net, fluff yarns are used in the chain stitch structures and film yarns are used as the insertion yarns, and further, the insertion yarns are hung between adjacent chain stitch structures every predetermined course to form a square mesh.

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