PROBLEM TO BE SOLVED: To increase the efficiency of the installation work, and to eliminate the need for providing a large space around a trunk.SOLUTION: As a technical premise that a diamond wire net is formed by combining a corrugated metal wire 14 which has curled portions 11 formed by curling at both ends or one end, when the edge of the wire net having the curled portion 11 is set as the top and bottom, the corrugated metal wire 14 is connected by having linear frame members 16-1 and 16-2 at the left and right end portions of the wire net and inserting flexible cords 20-1 and 20-2 through the curled portion 11 (Claim 1). The invention is configured to slide adjacent corrugated metal wires 14 freely each other through the flexible cord member. Since a mesh can be contracted/expanded by sliding, it is possible to put together in a very compact size easy to hold in hand when the entire corrugated metal wire is gathered so that the meshes are disappeared. Also when working in a bad condition of sloping foothold in forests, transporting a large number of bark protection nets 10 to the site becomes possible and therefore working efficiency is remarkably improved.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】 設置作業の効率を高め、樹幹の周囲に大きな余裕空間を設ける必要がないようにすること。【解決手段】 巻き成形したカール部11を両端または一端に備える波形金属線14を組み合わせて成形する菱形金網を技術的前提として、前記カール部11を備える金網の端縁を上下としたときに、当該金網の左右の端部に直線状の枠材16-1、16-2を備え、カール部11に柔軟な紐材20-1、20-2を挿通させることによって、波形金属線14を連結させる(請求項1)。柔軟な紐材を介して、隣接する波形金属線14同士を自由にスライドさせる構成である。網目がスライドして収縮/拡大できるので、網目がなくなるように全波形金属線を集めると、手に持ちやすい非常にコンパクトなサイズに集約出来、足場の悪い傾斜地林野での作業時にも、多くの本数の樹皮保護ネット10を現場に運ぶことが可能となり、作業効率が格段に向上する。【選択図】 図1
