JP5160582B2 - Bark protection sheet material and bark protection device using the same - Google Patents

Description

  The present invention relates to a bark protection sheet material used to protect a tree from damage caused by a wild animal such as a deer or a bear peeling off a bark against a tree planted in a forest or the like, and bark protection using the same Concerning ingredients.

  In recent years, there has been an increase in damage caused by wild animals that peel off bark from trees grown by reforestation. If trees are peeled off, they will die without being regenerated, and serious damage will occur. Therefore, it is necessary to take protective measures against wild animals.

  As protection measures for trees, methods such as killing wild animals, spraying repellents, wrapping wire nets and rough ropes have been proposed, but wild animal killing is not preferable from the viewpoint of protecting wild animals. As for repellent spraying, it flows due to rain, etc., and long-term effects cannot be expected. In addition, winding a wire mesh is costly and it is not realistic to install it over a wide range. Although winding a rough rope or the like is low in cost, it will be cut when the trunk grows thick due to the growth of the tree, and it will be necessary to wind it again in about three years.

  In order to cope with such problems of the conventional method, a method of winding a protective net has been proposed. Patent Document 1 describes a deforestation damage control tool for planting, in which a net made of a polyethylene material containing titanium dioxide as a photocatalyst is wound around a tree. By using polyethylene containing a photocatalyst, it is exposed to sunlight over a long period of time, so that the polyethylene degrades and decomposes, so that it has the advantage that it collapses with the growth of trees and is absorbed by the soil, and there is no need to collect it as garbage.

JP 2005-095081 A

  In Patent Document 1, although a net is used for protecting a tree, it cannot sufficiently cope with an increase in the diameter of a trunk due to the growth of the tree. Also, in areas with a lot of snow, there is a risk that the net wrapped around the tree may slip, and there is a difficulty in long-term durability. In addition, it is difficult to cover with a single net from the trunk part of the tree to the rooting part in terms of stretchability, and it is necessary to cover with a plurality of sheets, and there is a problem that work efficiency is deteriorated.

  Accordingly, an object of the present invention is to provide a bark protection sheet material that has durability in a state of being wound around a tree and that can be easily attached, and a bark protection device using the same.

The bark protective sheet material according to the present invention is a tape-like material made of a biodegradable synthetic resin material and arranged with a predetermined interval between a plurality of chain stitches knitted in the warp direction by a yarn made of a biodegradable synthetic resin material. connecting yarn chain stitch multiple entangled as woven adjacent chain stitch knitting which is knitted in a mesh spanned alternately in the weft direction at intervals between the rows of each other in and inserted into a plurality of stitch rows The chain yarns are entangled with each other in a double pile so that the connecting yarns are displaced, and are integrally formed, and the tensile breaking elongation in the weft direction is 130% to 150% .

  The bark protection device according to the present invention is characterized in that the bark protection sheet material is attached by a fastening member so that the chain braid is wound along the trunk direction of the tree and covers from the trunk part to the rooting part. And

  The present invention relates to a knitted body in which chain knitting rows are arranged at predetermined intervals in the warp direction, and adjacent chain knitting rows are alternately laid in the weft direction at predetermined intervals with tape-like connecting yarns and knitted in a mesh shape. Can be extended in the weft direction, and can be expanded in the weft direction in response to an increase in diameter as the tree grows even if it is installed in close contact with the circumference of the tree Become. And it can cover so that it may spread with respect to a rooting part in the state wound around the trunk | trunk part, and it can attach easily with one sheet | seat material.

  In addition, since the knitted bodies are doubled and the chain stitches are entangled with each other, it has sufficient strength and has durability that does not break for a long time even when wound around a tree. . And it becomes a sheet material with thickness by overlapping twice, and can show a high protection effect.

  In addition, the tape-shaped connecting thread stretched in the weft direction has a high tensile strength in the thread length direction but a low tearing strength, so when wound around a tree, the tape-shaped connecting thread is formed on the bark's surface protrusions or scissors. Will be caught and torn and held in close contact with the entire bark. Although the tape-like connecting thread is easily torn, it has a high tensile strength and therefore does not break and does not easily come off the bark. Therefore, even if it is installed in a region with a lot of snow, it will not deviate from the trees, and it is durable against wild animals pulling or flapping by strong winds, and can be kept in close contact with the trees for a long period of time. .

  Further, since the sheet material is composed of a biodegradable material, the sheet material is finally decomposed and taken into the soil, and does not adversely affect the natural environment.

It is a top view regarding the sheet | seat material for bark protection which concerns on this invention. It is a top view regarding a knitted body. It is a knitting | organization organization chart regarding the bark protection sheet material. It is another knitting | organization organization chart regarding the sheet | seat material for bark protection. It is a schematic diagram which shows the state which pulled the bark protection sheet | seat material in the weft direction. It is the schematic which shows the state which wound the bark protection sheet material around the tree T.

  The present invention will be described in detail below. FIG. 1 is a plan view relating to a bark protecting sheet material according to the present invention. The bark protection sheet material A is configured by overlapping the mesh-shaped knitted bodies B in a double manner. FIG. 2 is a plan view relating to the knitted body B. FIG. In the knitted body B, a plurality of chain knitting rows 1 knitted in the warp direction are arranged at predetermined intervals, and a connecting yarn knitted at intervals in the chain knitting rows 1 between adjacent chain knitting rows 1. 2 is knitted into a mesh shape by being alternately stretched in the weft direction. And the bark protection sheet | seat material A is comprised by mutually making the chain stitch row | line | column 1 of the knitting body B intertwined, and forming integrally.

  The yarn for knitting the chain 1 is preferably made of a biodegradable synthetic resin material. For example, polylactic acid, polybutylene succinate, polybutylene succinate adipate, polycaprolactone, polybutylene terephthalate adipate, polybutylene terephthalate succinate Such aliphatic polyesters and araliphatic polyesters. In addition to the hydrolyzable biodegradable synthetic resin material, an oxidized biodegradable synthetic resin material may be used. A yarn in the form of a monofilament, a multifilament, a flat yarn, or a slit yarn can be used.

  The connecting yarn 2 is preferably made of a biodegradable synthetic resin material, for example, aliphatic groups such as polylactic acid, polybutylene succinate, polybutylene succinate adipate, polycaprolactone, polybutylene terephthalate adipate, polybutylene terephthalate succinate. Polyester or araliphatic polyester may be mentioned. In addition to the hydrolyzable biodegradable synthetic resin material, an oxidized biodegradable synthetic resin material may be used. In particular, polybutylene succinate-based resin materials (eg, PBS-based resin materials manufactured by Mitsubishi Chemical Corporation) and polyolefin-based resin materials containing an oxidation accelerator (eg, biodegradable plastic manufactured by PLife Japan Inc.) preferable.

  The connecting yarn 2 is preferably in the form of a narrow tape like a flat yarn. The biodegradable synthetic resin material described above is formed in a tape shape, so that the tensile strength in the yarn length direction is large, but the tear strength is reduced in the direction perpendicular to the yarn length direction, and the connecting yarn 2 is also in the yarn length direction. It is easily torn in the width direction perpendicular to the surface, and is in a state of fluttering.

  The tape-shaped connecting yarn 2 is knitted without being twisted in advance, and is crushed in the width direction when knitted to form a narrow width, but can be easily torn in the width direction even after knitting. It has become.

  FIG. 3 is a knitting structure diagram relating to the bark protecting sheet material A. FIG. The chain knitting row of the knitted body B is knitted by the yarns L1 and L2, respectively, and the yarns L3 and L4 are knitted into the chain knitting row and alternately spanned between the adjacent chain knitting rows, thereby knitting the mesh-like knitted body B, respectively. Thus, they are overlapped and formed integrally. Further, the ears on both sides are knitted by the yarns L5 and L6.

  FIG. 4 is another knitting structure diagram regarding the bark protecting sheet material A. FIG. In FIG. 4, the same knitted yarn B as in FIG. 3 is used, and a mesh-shaped knitted body B in which the interval between the chain stitch rows is doubled is knitted.

  FIG. 5 is a schematic diagram showing a state in which the bark protection sheet material A is pulled in the weft direction. In the bark protection sheet material A, the chain knitting rows 1 knitted in the warp direction are arranged with a predetermined interval, and the connecting yarns 2 are knitted into the chain knitting row 1 with a predetermined interval between adjacent chain knitting rows 1. It is alternately stretched in the weft direction and is knitted in a mesh shape (FIG. 5A), but when pulled in the weft direction, the connecting yarn 2 is pulled out from the chain stitch row 1 and the chain stitch row 1 is warped in the warp direction. It will be in the contracted state and extended in the weft direction (FIG. 5B). By knitting in such a mesh shape, the bark protection sheet material A can have a tensile breaking elongation in the weft direction of 130% to 150%.

  FIG. 6 is a schematic view showing a state in which the bark protection sheet material A is wound around the tree T. FIG. The bark protection sheet material A is used with a width wider than the circumference of the trunk of the tree T and with a length sufficient to cover from the predetermined height of the trunk portion to the rooting portion.

  When attaching the bark protection sheet material A, the chain braid 1 is arranged along the longitudinal direction and wound around the tree T according to the mounting position of the trunk of the tree T, and the overlapping side portions are fastening members such as a binding band. Connect by 3. The fixing member 3 is attached to a plurality of locations at predetermined intervals so that both sides of the bark protecting sheet material A are not opened. The bark protection sheet material A is spread and covered, and fixed at a plurality of locations by fastening members 4 so as not to be turned up. One sheet material can cover the trunk portion to the rooting portion of the tree, and the attachment work can be performed efficiently.

  In the state in which the bark protection sheet material A is wound, the connecting yarns 2 arranged in the lateral direction on the protrusions and ridges on the tree surface are torn and caught, and do not easily come off. In addition, the diameter of the tree increases as the tree grows, but the bark protection sheet material A extends in the lateral direction accordingly, so that the wound state can be maintained for a long period of time. And since the whole sheet | seat material consists of a biodegradable material, it decomposes | disassembles finally and is taken in into soil and it becomes unnecessary to perform a maintenance operation | work.

  In addition, by using a white tape-like thread as the connecting thread 2, the entire wound sheet material becomes a white stripe pattern, making it difficult to see the bark surface and protecting the bark from being covered by wild animals. The effect can be further enhanced.

1 Chain braid 2 Linking thread 3 Fastening member 4 Fastening member

Claims (2)

A plurality of chain stitches knitted in the warp direction by yarns made of biodegradable synthetic resin material are arranged at predetermined intervals, and tape-like connecting yarns made of biodegradable synthetic resin material are inserted into a plurality of stitches of the chain stitch row Then, the knitted bodies knitted in a mesh shape by knitting so as to be entangled multiple times and alternately spanning in the weft direction with an interval between adjacent chain knitting rows are overlapped so that the connecting yarns are displaced from each other A bark protective sheet material , which is integrally formed by entanglement with each other in a state of chain knitting, and having a tensile breaking elongation in the weft direction of 130% to 150% . A bark protection device comprising: a bark protection sheet material according to claim 1 attached by a fastening member so that the chain stitch row is wound along the trunk direction of the tree and covers from the trunk part to the rooting part. .

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